Vibration generating device and vibration device

Abstract

A vibration generating apparatus and a vibration device. The vibration generating apparatus includes a display panel configured to display an image, a vibration device disposed at a rear surface of the display panel and configured to vibrate the display panel, a support member at the rear surface of the display panel, and a spacer member between the vibration device and the support member.

Description

[0001] This application is a divisional application of the original invention patent application with application number 202111012290.8 (application date: August 31, 2021, invention title: vibration generating device and vibration device). Technical Field

[0002] This disclosure relates to vibration equipment and vibration generating equipment including the vibration equipment. Background Technology

[0003] In a display device, the display panel displays images, and a separate speaker should be installed to provide sound. When the speaker is located in the display device or apparatus, the speaker occupies space, and therefore, the design and spatial arrangement of the display device or apparatus are limited.

[0004] However, because sound output from a speaker can propagate backward or downward towards the display device, sound quality can degrade due to interference between sound reflected from walls and the floor. This can make it difficult to deliver accurate sound and reduce the viewer's immersive experience. Summary of the Invention

[0005] The inventors have recognized the aforementioned problems and have conducted various experiments to develop a vibrating device for improving sound quality and sound pressure level characteristics. Therefore, through these experiments, the inventors have invented a device with a novel structure, comprising a vibrating mechanism for improving sound quality and / or sound pressure level characteristics.

[0006] Therefore, embodiments of this disclosure are directed to a vibration device and an apparatus including the vibration device, which substantially eliminate one or more problems caused by the limitations and disadvantages of the prior art.

[0007] One aspect of this disclosure is to provide a vibration device and an apparatus including the vibration device, which causes a display panel to vibrate to generate sound and has enhanced sound characteristics and / or sound pressure level characteristics.

[0008] Additional features and aspects will be set forth in part in the description which follows, and will also become apparent in part from that description, or may be obtained by practicing the inventive concept provided herein. Other features and aspects of the inventive concept may be realized and obtained by means of structures particularly pointed out in the written description or from which they may be derived, the claims, and the drawings.

[0009] To achieve these and other aspects of the inventive concept, as embodied and broadly described herein, an apparatus includes a display panel configured to display an image, a vibration device disposed on the rear surface of the display panel and configured to vibrate the display panel, a support member on the rear surface of the display panel, and a pad member between the vibration device and the support member.

[0010] In another aspect, an apparatus includes a display panel configured to display an image, a vibrating device at a rear surface of the display panel, a plate between the display panel and the vibrating device, a support member disposed at the rear surface of the display panel, and a pad member between the vibrating device and the support member.

[0011] In another aspect, a vibration device includes a plurality of vibration generators stacked and shifted in the same direction, an adhesive member located between the plurality of vibration generators, and a pad member among the plurality of vibration generators.

[0012] In another aspect, a device includes a vibrating member, a vibrating device at the vibrating member, and a pad member at the vibrating device.

[0013] In another aspect, an apparatus includes a vibrating object and a vibrating device within the vibrating object, the vibrating device comprising a plurality of vibration generators stacked and displaced in the same direction, an adhesive member located between the plurality of vibration generators, and a pad member at the plurality of vibration generators.

[0014] Note that directional indications, such as rear surface or front surface, are given relative to a user viewing the image in front of the device. That is, the front surface of the display panel (or vibrating member or vibrating object) can be a surface with a display area, i.e., a surface on which an image can be displayed. Similarly, the rear surface of the display panel (or vibrating member or vibrating object) can be a surface opposite to the front surface, i.e., a surface away from the user. Furthermore, the thickness direction can refer to a direction perpendicular to the front and / or rear surfaces, and "separated on a plane parallel to the front and / or rear surfaces of the display panel" can mean setting a distance between two elements parallel to the front and / or rear surfaces of the display panel (or vibrating member or vibrating object).

[0015] The device according to embodiments of the present disclosure can vibrate a display panel to generate sound, and can output sound with enhanced sound characteristics and / or enhanced sound pressure level characteristics in the forward direction of the display panel.

[0016] According to embodiments of this disclosure, a pad member can be provided to realize a device with enhanced sound output characteristics.

[0017] In the device according to embodiments of the present disclosure, as the amplitude displacement of the diaphragm increases, the characteristics of the mid-tone vocal cords, low-tone vocal cords, and / or mid-low-tone vocal cords of the sound generated based on the displacement of the diaphragm can be enhanced.

[0018] In the vibration device according to embodiments of the present disclosure, the mid-tone, low-tone, and / or mid-to-low-tone characteristics of the sound generated based on the displacement of the vibrating plate can be enhanced.

[0019] Other systems, methods, features, and advantages will be or will become apparent to those skilled in the art upon viewing the following drawings and detailed description. All such additional systems, methods, features, and advantages are intended to be included within this specification, within the scope of this disclosure, and protected by the appended claims. Nothing in this section should be construed as limiting these claims. Other aspects and advantages are discussed below in conjunction with embodiments of this disclosure.

[0020] It should be understood that the above overview and the following detailed description of this disclosure are illustrative and explanatory, and are intended to provide further explanation of the claimed inventive concept.

[0021] Appendix 1. A vibration generating device, the vibration generating device comprising:

[0022] Display panel, the display panel being configured to display images;

[0023] A vibration device disposed on the rear surface of the display panel and configured to cause the display panel to vibrate;

[0024] A support member located on the rear surface of the display panel; and

[0025] A pad component is located between the vibrating device and the support component.

[0026] Appendix 2. According to the vibration generating device described in Appendix 1, the vibration generating device further includes:

[0027] A connecting member is disposed between the display panel and the vibration device.

[0028] Appendix 3. The vibration generating device according to Appendix 1, wherein,

[0029] The vibration device includes multiple vibration generators, and

[0030] Each of the plurality of vibration generators is configured to vibrate in the same direction.

[0031] Appendix 4. The vibration generating device according to Appendix 2, wherein the vibration generating device further includes:

[0032] An adhesive component is located between a plurality of vibration generators.

[0033] Note 5. The vibration generating device according to Note 2, wherein each of the plurality of vibration generators has the same size.

[0034] Note 6. The vibration generating device according to Note 2, wherein the end of each of the plurality of vibration generators is aligned in a direction perpendicular to the front surface of the display panel.

[0035] Note 7. The vibration generating device according to Note 2, wherein each of the plurality of vibration generators further comprises a plurality of vibration structures arranged along a first direction and a second direction intersecting the first direction.

[0036] Appendix 8. The vibration generating device according to Appendix 2, wherein,

[0037] Each of the multiple vibration generators also includes multiple vibration structures, and

[0038] The pad component is disposed between the plurality of vibrating structures.

[0039] Appendix 9. The vibration generating device according to Appendix 2, wherein,

[0040] Each of the multiple vibration generators also includes multiple vibration structures, and

[0041] The pad component is disposed at each of the plurality of vibrating structures.

[0042] Note 10. The vibration generating device according to Note 2, wherein,

[0043] Each of the multiple vibration generators also includes multiple vibration structures, and

[0044] The pad members are disposed on each of the plurality of vibration structures and between adjacent pad members disposed at each of the plurality of vibration structures.

[0045] Note 11. The vibration generating device according to Note 1, wherein,

[0046] The vibration device includes at least two or more vibration structures, and

[0047] The pad component is disposed between the at least two or more vibrating structures.

[0048] Appendix 12. The vibration generating device according to Appendix 1, wherein,

[0049] The vibration device includes at least two or more vibration structures, and

[0050] The pad members are disposed at each of the plurality of vibration structures and between adjacent pad members disposed at each of the plurality of vibration structures.

[0051] Note 13. The vibration generating device according to Note 1, wherein the size of the pad component is equal to or smaller than the size of the vibration device.

[0052] Note 14. The vibration generating device according to Note 3, wherein,

[0053] Each of the plurality of vibration generators further includes a plurality of vibration structures, and

[0054] The pad component overlaps with at least one of the plurality of vibrating structures.

[0055] Note 15. The vibration generating device according to Note 3, wherein,

[0056] Each of the plurality of vibration generators further includes a plurality of vibration structures.

[0057] The pad block components are configured in multiple ways.

[0058] One of the pad components overlaps with at least two or more of the vibrating structure.

[0059] Note 16. The vibration generating device according to Note 3, wherein,

[0060] Each of the plurality of vibration generators further includes a plurality of vibration structures, and

[0061] The pad component is positioned adjacent to the plurality of vibration structures.

[0062] Note 17. The vibration generating device according to Note 3, wherein,

[0063] Each of the plurality of vibration generators further includes a plurality of vibration structures, and

[0064] The pad component overlaps with two adjacent vibration structures.

[0065] Note 18. The vibration generating device according to Note 1, wherein,

[0066] The vibration device includes at least two or more vibration structures, and

[0067] The pad component is disposed at each of the at least two or more vibrating structures.

[0068] Note 19. The vibration generating device according to Note 1, wherein,

[0069] The vibration device includes at least two or more vibration structures, and

[0070] The pad block member is disposed at each of the at least two or more vibration structures, and is disposed between adjacent pad block members disposed at each of the at least two or more vibration structures.

[0071] Note 20. The vibration generating device according to Note 1 further includes:

[0072] A plate, which is located between the display panel and the vibration device.

[0073] Note 21. The vibration generating device according to Note 17 further includes:

[0074] A plate connecting member configured to connect the plate to the rear surface of the display panel.

[0075] Note 22. The vibration generating device according to any one of Notes 1 to 21, wherein the vibration device comprises:

[0076] Vibrating structure;

[0077] A first protective member is disposed on a first surface of the vibrating structure; and

[0078] The second protective member is disposed on a second surface of the vibrating structure that is different from the first surface.

[0079] Note 23. The vibration generating device according to Note 22, wherein the vibration device further includes:

[0080] A first adhesive layer is disposed between the vibrating structure and the first protective member; and

[0081] A second adhesive layer is disposed between the vibrating structure and the second protective member.

[0082] Note 24. The vibration generating device according to Note 22, wherein the vibration structure comprises:

[0083] Vibrating part;

[0084] A first electrode portion, wherein the first electrode portion is disposed between the vibrating portion and the first protective member; and

[0085] The second electrode portion is disposed between the vibrating portion and the second protective member.

[0086] Note 25. The vibration generating device according to Note 24, wherein the vibration portion includes a plurality of first portions and a second portion disposed between the plurality of first portions.

[0087] Appendix 26. A vibration generating device, the vibration generating device comprising:

[0088] Display panel, the display panel being configured to display images;

[0089] A vibration device, the vibration device being located on the rear surface of the display panel;

[0090] A plate, located between the display panel and the vibration device;

[0091] A support member disposed on the rear surface of the display panel; and

[0092] A pad component is located between the vibrating device and the support component.

[0093] Note 27. The vibration generating device according to Note 26 further includes:

[0094] A connecting member is disposed between the display panel and the vibration device.

[0095] Note 28. The vibration generating device according to Note 26, wherein,

[0096] The display panel includes a first area and a second area, and

[0097] The vibration device includes a first vibration device disposed in the first region and a second vibration device disposed in the second region.

[0098] Note 29. The vibration generating device according to Note 28 further includes:

[0099] A separator is disposed between the rear surface of the display panel and the support member, and between the first region and the second region.

[0100] Note 30. The vibration generating device according to Note 28, wherein the pad component is disposed at each of the first vibrating device and the second vibrating device.

[0101] Note 31. The vibration generating device according to Note 28, wherein the vibration device further includes:

[0102] A third vibration device, wherein the third vibration device is disposed in the first region; and

[0103] A fourth vibration device is disposed in the second region.

[0104] Note 32. The vibration generating device according to Note 31, wherein,

[0105] The first vibrating device and the third vibrating device are arranged parallel to or staggered with each other in the first region, and

[0106] The second and fourth vibrating devices are arranged parallel to or staggered to each other in the second region.

[0107] Note 33. The vibration generating device according to Note 31, wherein the pad member is disposed at each of the third and fourth vibration devices.

[0108] Note 34. The vibration generating device according to any one of Notes 26 to 33, wherein the vibration device comprises:

[0109] Vibrating structure;

[0110] A first protective member is disposed on a first surface of the vibrating structure; and

[0111] The second protective member is disposed on a second surface of the vibrating structure that is different from the first surface.

[0112] Note 35. The vibration generating device according to Note 34, wherein the vibration device further comprises:

[0113] A first adhesive layer is disposed between the vibrating structure and the first protective member; and

[0114] A second adhesive layer is disposed between the vibrating structure and the second protective member.

[0115] Note 36. The vibration generating device according to Note 34 further includes:

[0116] A first vibration drive line, configured to transmit a first vibration drive signal to the vibrating structure; and

[0117] A second vibration drive line is configured to transmit a second vibration drive signal to the vibration structure.

[0118] Note 37. The vibration generating device according to Note 34, wherein the vibration structure comprises:

[0119] Vibrating part;

[0120] A first electrode portion, wherein the first electrode portion is disposed between the vibrating portion and the first protective member; and

[0121] The second electrode portion is disposed between the vibrating portion and the second protective member.

[0122] Note 38. The vibration generating device according to Note 37, wherein the vibration portion includes a plurality of first portions and a second portion disposed between the plurality of first portions.

[0123] Note 39. The vibration generating device according to Note 37 further includes:

[0124] A first power line, the first power line being connected to one of the first electrode portion and the second electrode portion; and

[0125] A second power line is connected to the other of the first electrode portion and the second electrode portion, and is spaced apart from the first power line in a plane parallel to the front and rear surfaces of the display panel.

[0126] Note 40. The vibration generating device according to Note 28, wherein each of the first vibration device and the second vibration device comprises:

[0127] Multiple vibration generators; and

[0128] An adhesive component is located between the plurality of vibration generators.

[0129] Note 41. The vibration generating device according to Note 28, wherein the vibration device further comprises:

[0130] A third vibration device, wherein the third vibration device is disposed in the first region; and

[0131] A fourth vibration device is disposed in the second region, and

[0132] Each of the third vibration device and the fourth vibration device includes:

[0133] Multiple vibration generators; and

[0134] An adhesive component is located between the plurality of vibration generators.

[0135] Note 42. The vibration generating device according to Note 40 or 41, wherein each of the plurality of vibration generators comprises:

[0136] The vibrating part comprises a plurality of inorganic material parts having piezoelectric properties and an organic material part located between the plurality of inorganic material parts;

[0137] A first electrode portion, wherein the first electrode portion is disposed on a first surface of the vibrating portion; and

[0138] The second electrode portion is disposed on a second surface of the vibrating portion that is different from the first surface.

[0139] Note 43. The vibration generating device according to Note 42 further includes:

[0140] A first power line, the first power line being connected to the first electrode portion; and

[0141] The second power line is connected to the second electrode portion.

[0142] The second power line is spaced apart from the first power line in a plane parallel to the front and rear surfaces of the display panel.

[0143] Note 44. The vibration generating device according to Note 42, wherein,

[0144] Some of the plurality of vibration generators overlap in a direction perpendicular to the front surface of the display panel.

[0145] The inorganic material portion of the vibration generator positioned closer to the front surface of the display panel overlaps with the inorganic material portion of another vibration generator positioned less close to the front surface of the display panel, and / or

[0146] The organic material portion of the vibration generator positioned closer to the front surface of the display panel overlaps with the organic material portion of the other vibration generator positioned less close to the front surface of the display panel.

[0147] Note 45. The vibration generating device according to Note 42 further includes:

[0148] First power cord and second power cord

[0149] Some of the plurality of vibration generators overlap in a direction perpendicular to the front surface of the display panel.

[0150] Specifically, a first electrode portion positioned closer to the front surface of the display panel and a first electrode portion positioned less close to the front surface of the display panel are connected to the first power line, and

[0151] The second electrode portion, which is positioned closer to the front surface of the display panel, and the second electrode portion, which is positioned less close to the front surface of the display panel, are connected to the second power line.

[0152] Note 46. The vibration generating device according to Note 40 or 41, wherein the adhesive member comprises a first adhesive layer and a second adhesive layer, and each of the plurality of vibration generators comprises:

[0153] Multiple vibration structures are arranged along a first direction and a second direction intersecting the first direction;

[0154] A first protective member, wherein the first protective member is disposed on a first surface of each of the plurality of vibrating structures via the first adhesive layer; and

[0155] The second protective member is disposed on the second surface of each of the plurality of vibrating structures via the second adhesive layer.

[0156] Note 47. The vibration generating device according to Note 46, wherein the plurality of vibration structures are arranged at intervals of 0.1 mm or greater and less than 5 mm.

[0157] Note 48. The vibration generating device according to Note 46 further includes:

[0158] A first vibration drive line, configured to transmit a first vibration drive signal to the plurality of vibration structures; and

[0159] A second vibration drive line is configured to transmit a second vibration drive signal to the plurality of vibration structures.

[0160] Note 49. The vibration generating device according to Note 46, wherein the pad member is disposed between the plurality of vibration structures included in each of the plurality of vibration generators.

[0161] Note 50. The vibration generating device according to Note 46, wherein the pad member is disposed at the plurality of vibration structures included in each of the plurality of vibration generators.

[0162] Note 51. The vibration generating device according to Note 46, wherein the pad member is disposed at each of the plurality of vibration structures included in each of the plurality of vibration generators and between adjacent pad members disposed on each of the plurality of vibration structures.

[0163] Note 52. The vibration generating device according to Note 26, wherein,

[0164] The vibration device also includes multiple vibration structures, and

[0165] The pad component is configured to be adjacent to multiple vibration structures.

[0166] Note 53. The vibration generating device according to Note 26, wherein,

[0167] The vibration device also includes multiple vibration structures, and

[0168] The pad component overlaps with two adjacent vibration structures.

[0169] Note 54. The vibration generating device according to Note 26, wherein,

[0170] The vibration device also includes multiple vibration structures, and

[0171] The pad component overlaps with at least one of the plurality of vibrating structures.

[0172] Note 55. The vibration generating device according to Note 26, wherein,

[0173] The vibration device also includes multiple vibration structures, and

[0174] The pad block components are configured in multiple ways, and

[0175] One of the pad components overlaps with at least two or more of the vibrating structure.

[0176] Note 56. The vibration generating device according to Note 46, wherein each of the plurality of vibration structures comprises:

[0177] Vibrating part;

[0178] A first electrode portion, wherein the first electrode portion is disposed between the vibrating portion and the first protective member; and

[0179] The second electrode portion is disposed between the vibrating portion and the second protective member.

[0180] Note 57. The vibration generating device according to Note 56, wherein the vibrating part comprises:

[0181] Multiple inorganic material components; and

[0182] An organic material portion is located between the plurality of inorganic material portions.

[0183] Note 58. The vibration generating device according to Note 46, wherein each of the plurality of vibration generators comprises:

[0184] Vibrating part;

[0185] A first electrode portion, wherein the first electrode portion is disposed on a first surface of the vibrating portion; and

[0186] The second electrode portion is disposed on a second surface of the vibrating portion that is different from the first surface, and

[0187] In this configuration, the first electrode portion of each of the plurality of vibration generators is positioned closer to the display panel than the second electrode portion.

[0188] Note 59. The vibration generating device according to Note 58 further includes:

[0189] A vibration driving circuit, comprising multiple amplifiers respectively connected to the plurality of vibration generators.

[0190] The plurality of vibration generators include a first group and a second group.

[0191] The plurality of amplifiers includes a first amplifier group and a second amplifier group.

[0192] The amplifier in the first amplifier group includes a first output terminal connected to a first electrode portion of the vibration generator of the first group and a second output terminal connected to a second electrode portion of the vibration generator of the first group.

[0193] The amplifier in the second amplifier group includes a first output terminal connected to the second electrode portion of the vibration generator of the second group and a second output terminal connected to the first electrode portion of the vibration generator of the second group.

[0194] Note 60. The vibration generating device according to Note 46, wherein each of the plurality of vibration generators comprises:

[0195] Vibrating part;

[0196] A first electrode portion, wherein the first electrode portion is disposed on a first surface of the vibrating portion; and

[0197] The second electrode portion is disposed on a second surface of the vibrating portion that is different from the first surface.

[0198] The plurality of vibration generators include a first group and a second group.

[0199] In the vibration generator of the first group, the first electrode portion is positioned closer to the display panel than the second electrode portion, and

[0200] In the vibration generator of the second group, the second electrode portion is positioned closer to the display panel than the first electrode portion.

[0201] Note 61. The vibration generating device according to Note 60 further includes:

[0202] A vibration driving circuit, comprising multiple amplifiers respectively connected to the plurality of vibration generators.

[0203] Each of the plurality of amplifiers includes:

[0204] A first output terminal, the first output terminal being connected to the first electrode portion of a respective vibration generator among the plurality of vibration generators; and

[0205] The second output terminal is connected to the second electrode portion of the respective vibration generator among the plurality of vibration generators.

[0206] Appendix 62. A vibration device, the vibration device comprising:

[0207] Multiple vibration generators, which are stacked on top of each other and configured to vibrate in the same direction;

[0208] An adhesive member is located between the plurality of vibration generators; and

[0209] A pad component located at the plurality of vibration generators.

[0210] Note 63. The vibration device according to Note 62, wherein each of the plurality of vibration generators has the same size.

[0211] Note 64. The vibration device according to Note 62, wherein the end of each of the plurality of vibration generators is aligned in a direction perpendicular to the front surface of the vibration generator.

[0212] Note 65. The vibration device according to Note 62 further includes:

[0213] A plate, wherein the plate is disposed at the uppermost vibration generator among the plurality of vibration generators.

[0214] The pad component is located at the lowest vibration generator among the plurality of vibration generators.

[0215] Note 66. The vibration device according to Note 65, wherein each of the plate and each of the plurality of vibration generators has the same size.

[0216] Note 67. The vibration device according to Note 62 further includes:

[0217] Another pad component is disposed between adjacent pad components located at the plurality of vibration generators.

[0218] Appendix 68. A vibration generating device, the vibration generating device comprising:

[0219] Vibrating components;

[0220] Vibration device, the vibration device being located at the vibrating member; and

[0221] A pad component, the pad component being located at the vibrating device.

[0222] Note 69. The vibration generating device according to Note 68, wherein,

[0223] The vibrating component includes a plate, and

[0224] The board may be a metallic material, or a single non-metallic material or a composite non-metallic material selected from wood, plastic, glass, cloth, paper and leather.

[0225] Note 70. The vibration generating device according to Note 69, wherein each of the vibrating member and the plate has the same size.

[0226] Note 71. The vibration generating device according to Note 68, wherein the vibration device comprises a plurality of vibration generators stacked on top of each other and configured to vibrate in the same direction.

[0227] Note 72. The vibration generating device according to Note 71, wherein,

[0228] Each of the plurality of vibration generators further includes a plurality of vibration structures, and

[0229] The pad component is disposed at each of the plurality of vibrating structures.

[0230] Note 73. The vibration generating device according to Note 71, wherein,

[0231] Each of the plurality of vibration generators further includes a plurality of vibration structures, and

[0232] The pad component is disposed between the plurality of vibrating structures.

[0233] Note 74. The vibration generating device according to Note 71, wherein,

[0234] Each of the plurality of vibration generators further includes a plurality of vibration structures, and

[0235] The pad members are disposed at each of the plurality of vibration structures and between adjacent pad members disposed at each of the plurality of vibration structures.

[0236] Note 75. The vibration generating device according to Note 71, wherein,

[0237] Each of the plurality of vibration generators further includes a plurality of vibration structures, and

[0238] The pad component is located at each of the plurality of vibration structures included in the lowest vibration generator among the plurality of vibration generators.

[0239] Note 76. The vibration generating device according to Note 71, wherein,

[0240] Each of the plurality of vibration generators further includes a plurality of vibration structures, and

[0241] The pad component is located between multiple vibration structures included in the lowest vibration generator among the plurality of vibration generators.

[0242] Note 77. The vibration generating device according to Note 71, wherein,

[0243] Each of the plurality of vibration generators further includes a plurality of vibration structures, and

[0244] The pad component is located at each of the plurality of vibration structures included in the lowest vibration generator among the plurality of vibration generators, and is disposed at each of the plurality of vibration structures.

[0245] Note 78. The vibration generating device according to Note 71, wherein,

[0246] Each of the plurality of vibration generators further includes a plurality of vibration structures, and

[0247] The pad component is positioned adjacent to the plurality of vibration structures.

[0248] Note 79. The vibration generating device according to Note 68, wherein,

[0249] The vibration device includes at least two or more vibration structures, and

[0250] The pad component overlaps with the at least two or more vibrating structures.

[0251] Note 80. The vibration generating device according to Note 68, wherein,

[0252] The vibration device includes at least two or more vibration structures, and

[0253] The pad members are disposed at each of the at least two or more vibrating structures and between adjacent pad members disposed at each of the at least two or more vibrating structures.

[0254] Note 81. The vibration generating device according to Note 68, wherein,

[0255] The vibration device includes at least two or more vibration structures, and

[0256] The pad member overlaps with at least two or more of the plurality of vibration structures and is disposed between adjacent pad members disposed at each of the plurality of vibration structures.

[0257] Note 82. The vibration generating device according to Note 68, wherein,

[0258] The vibration device includes at least two or more vibration structures, and

[0259] The pad component overlaps with at least one of the plurality of vibrating structures.

[0260] Note 83. The vibration generating device according to Note 68, wherein,

[0261] The vibration device includes at least two or more vibration structures.

[0262] The pad block components are configured in multiple ways, and

[0263] One of the pad components overlaps with at least two or more of the vibrating structure.

[0264] Note 84. The vibration generating device according to Note 68, wherein the vibrating member includes a display panel comprising a plurality of pixels configured to display an image, or the vibrating member includes one or more non-display panels among a light-emitting diode illumination panel, an organic light-emitting illumination panel, and an inorganic light-emitting illumination panel.

[0265] Note 85. The vibration generating device according to Note 68, wherein the vibrating component includes a display panel comprising pixels configured to display an image, or the vibrating component includes one or more of a screen panel, a lighting panel, a sign panel, vehicle interior material, vehicle window, vehicle exterior material, building roof material, building interior material, building window, aircraft interior material, aircraft window, and a reflector, on which an image is projected from the display device.

[0266] Note 86. The vibration generating apparatus according to any one of Notes 71 to 78, wherein each of the plurality of vibration generators comprises:

[0267] The vibrating part comprises a plurality of inorganic material parts having piezoelectric properties and an organic material part located between the plurality of inorganic material parts;

[0268] A first electrode portion, wherein the first electrode portion is disposed on a first surface of the vibrating portion; and

[0269] The second electrode portion is disposed on a second surface of the vibrating portion that is different from the first surface.

[0270] Note 87. The vibration generating device according to Note 86 further includes:

[0271] First power cord and second power cord

[0272] Some of the plurality of vibration generators overlap in a direction perpendicular to the front surface of the vibration member.

[0273] The first electrode portion of the vibration generator positioned close to the front surface of the vibrating member and the first electrode portion of the vibration generator positioned less close to the front surface of the vibrating member are connected to the first power line.

[0274] The second electrode portion of the vibration generator, positioned close to the front surface of the vibrating member, and the second electrode portion of the vibration generator, positioned less close to the front surface of the vibrating member, are connected to the second power line.

[0275] Note 88. The vibration generating device according to Note 87, wherein the first power line connected to the first electrode portion of the vibration generator located near the front surface of the vibration member does not overlap with the second power line connected to the second electrode portion of the vibration generator located near the front surface of the vibration member.

[0276] Note 89. The vibration generating device according to Note 87, wherein the first power line connected to the first electrode portion of the vibration generator, which is positioned not too close to the front surface of the vibration member, does not overlap with the second power line connected to the second electrode portion of the vibration generator, which is positioned not too close to the front surface of the vibration member.

[0277] Note 90. The vibration generating device according to any one of Notes 68 to 85, wherein the vibration device comprises:

[0278] The vibrating part comprises a plurality of inorganic material parts having piezoelectric properties and an organic material part located between the plurality of inorganic material parts;

[0279] A first electrode portion, wherein the first electrode portion is disposed on a first surface of the vibrating portion; and

[0280] The second electrode portion is disposed on a second surface of the vibrating portion that is different from the first surface.

[0281] Note 91. The vibration generating device according to Note 90 further includes:

[0282] A first power line, the first power line being connected to the first electrode portion; and

[0283] The second power line is connected to the second electrode portion.

[0284] The second power line is spaced apart from the first power line in a plane parallel to the front and rear surfaces of the vibrating member.

[0285] Note 92. The vibration generating device according to any one of Notes 68 to 85, wherein the vibration device comprises:

[0286] At least two or more vibrating structures;

[0287] A first electrode portion located on a first surface of one of the at least two or more vibrating structures and a second electrode portion located on a surface different from the first surface;

[0288] A third electrode portion located on the first surface of another of the at least two or more vibrating structures, and a fourth electrode portion located on a surface different from the first surface; and

[0289] A first power line connected to the first electrode portion and the third electrode portion, and a second power line connected to the second electrode portion and the fourth electrode portion. Attached Figure Description

[0290] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0291] Figure 1 An apparatus according to an embodiment of the present disclosure is shown.

[0292] Figure 2 It is along Figure 1 The cross-sectional view shown is taken by line I-I'.

[0293] Figure 3 This is a cross-sectional view of a vibration device according to an embodiment of the present disclosure.

[0294] Figure 4 It is along Figure 3 The cross-sectional view taken by line II-II' shown.

[0295] Figure 5 A vibration drive circuit according to an embodiment of the present disclosure is shown.

[0296] Figure 6A The displacement of a vibration generator according to an embodiment of the present disclosure is shown.

[0297] Figure 6B The displacement of a vibration device according to an embodiment of the present disclosure is shown.

[0298] Figure 7 A vibration device according to another embodiment of the present disclosure is shown.

[0299] Figure 8 It is along Figure 7 The cross-sectional view taken by line III-III' shown.

[0300] Figure 9 A vibration drive circuit according to another embodiment of the present disclosure is shown.

[0301] Figure 10 A vibration device according to another embodiment of the present disclosure is shown.

[0302] Figure 11 It shows Figure 10 The vibrating part is shown.

[0303] Figures 12A to 12C It is along Figure 10 The cross-sectional view shown is taken from line IV-IV'.

[0304] Figure 13 A vibration device according to another embodiment of the present disclosure is shown.

[0305] Figure 14 A vibration device according to another embodiment of the present disclosure is shown.

[0306] Figure 15 A vibration device according to another embodiment of the present disclosure is shown.

[0307] Figures 16A to 16E It is along Figure 15 The cross-sectional view shown is taken from line V-V'.

[0308] Figure 17 An apparatus according to another embodiment of the present disclosure is shown.

[0309] Figure 18 The display panel is shown according to Figure 17 The amplitude displacement of the plate thickness is shown.

[0310] Figure 19 A vibration device according to another embodiment of the present disclosure is shown.

[0311] Figure 20 A vibration device according to another embodiment of the present disclosure is shown.

[0312] Figure 21 It is along Figure 20 The cross-sectional view shown is taken from line VI-VI'.

[0313] Figure 22 A vibration device according to another embodiment of the present disclosure is shown.

[0314] Figure 23 It is along Figure 22 The cross-sectional view taken by line VII-VII' shown.

[0315] Figure 24 A vibration device according to another embodiment of the present disclosure is shown.

[0316] Figure 25 It is along Figure 24 The cross-sectional view taken by line VIII-VIII' shown.

[0317] Figure 26 A vibration device according to another embodiment of the present disclosure is shown.

[0318] Figure 27 It is along Figure 26 The cross-sectional view shown is taken from line IX-IX'.

[0319] Figure 28 An apparatus according to another embodiment of the present disclosure is shown.

[0320] Figure 29 It is along Figure 28The cross-sectional view shown is taken by line X-X'.

[0321] Figure 30 An apparatus according to another embodiment of the present disclosure is shown.

[0322] Figure 31 An apparatus according to another embodiment of the present disclosure is shown.

[0323] Figure 32 It is along Figure 1 Another cross-sectional view taken by line I-I' shown.

[0324] Figure 33 An apparatus according to another embodiment of the present disclosure is shown.

[0325] Figure 34 It is along Figure 33 The cross-sectional view taken by line XI-XI' shown in the figure.

[0326] Figure 35 It is along Figure 33 Another cross-sectional view taken from line XI-XI' shown in the diagram.

[0327] Figure 36 An apparatus according to another embodiment of the present disclosure is shown.

[0328] Figure 37 An apparatus according to another embodiment of the present disclosure is shown.

[0329] Figure 38 An apparatus according to another embodiment of the present disclosure is shown.

[0330] Figure 39 The sound output characteristics of each of the display devices according to embodiments of the present disclosure and the display devices according to experimental examples are shown.

[0331] Figure 40 The sound output characteristics of a display device according to an embodiment of the present disclosure are shown.

[0332] Figure 41 The sound output characteristics of a display device according to an embodiment of the present disclosure are shown.

[0333] Figure 42 The sound output characteristics of a display device according to an embodiment of the present disclosure are shown. Detailed Implementation

[0334] The shapes, sizes, ratios, angles, and quantities disclosed in the drawings used to describe embodiments of this disclosure are merely examples, and therefore, this disclosure is not limited to the details shown. The same reference numerals denote the same elements throughout the specification. In the following description, detailed descriptions that would unnecessarily obscure the focus of this disclosure will be omitted where such descriptions would unnecessarily obscure the emphasis. When using the terms “comprising,” “having,” and “including” as described in this specification, additional parts may be added unless “only” is used. Unless otherwise indicated, singular terms may include plural forms.

[0335] When interpreting a component, it is interpreted as including a range of errors or tolerances, even though there is no explicit description of that range of errors or tolerances.

[0336] When describing positional relationships, for example, when the positional relationship between two parts is described as, for example, "above," "on top," "below," and "nearby," one or more other parts may be placed between the two parts unless more restrictive terms such as "only" or "directly" are used.

[0337] When describing temporal relationships, such as when time sequence is described as "after," "following," "next," and "before," discontinuous situations may be included unless more restrictive terms such as "only," "immediately," or "directly" are used.

[0338] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this disclosure, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0339] In describing the elements of this disclosure, the terms “first,” “second,” “A,” “B,” “(a),” “(b),” etc., may be used. These terms are intended to distinguish corresponding elements from other elements, and the basis, order, or number of corresponding elements shall not be limited by these terms. Unless otherwise stated, the expression that an element is “connected,” “linked,” or “attached” to another element or layer indicates that the element or layer may be directly connected or attached to another element or layer, or indirectly connected or attached to another element or layer, and that one or more intermediate elements or layers are “disposed” between the elements or layers.

[0340] The term "at least one" should be understood to include any and all combinations of one or more associated listed items. For example, "at least one of the first, second and third items" means a combination of all items derived from two or more of the first, second and third items, as well as the first, second or third item.

[0341] In this disclosure, examples of display devices may include display devices in the narrow sense, such as an organic light-emitting display (OLED) module or a liquid crystal module (LCM) including a display panel and a driver for driving the display panel. Furthermore, examples of display devices may include assemblies (or assemblies of equipment) or assemblies of electronic devices that are complete products (or end products) including LCMs or OLED modules, such as laptops, TVs, computer monitors, components of other types of equipment including automotive equipment or for vehicles, or mobile electronic devices such as smartphones or tablets.

[0342] Therefore, in this disclosure, examples of display devices may include display devices themselves in the narrow sense, such as LCM or OLED modules, as well as complete sets of equipment that include LCM or OLED modules as end consumer devices or application products.

[0343] In some implementations, an LCM or OLED module including a display panel and a driver may be referred to as a narrowly defined display device, and an electronic device that is a final product including the LCM or OLED module may be referred to as an assembly. For example, a narrowly defined display device may include a display panel such as an LCD or OLED and a source printed circuit board (PCB) serving as a controller for driving the display panel. An assembly may also include an assembly PCB, which is an assembly controller electrically connected to the source PCB to control the assembly as a whole.

[0344] The display panel used in this embodiment can be any type of display panel, such as a liquid crystal display panel, an organic light-emitting diode (OLED) display panel, and an electroluminescent display panel. However, the embodiments of this disclosure are not limited to a specific display panel that is vibrated by the sound generating device according to this embodiment to output sound. Furthermore, the shape or size of the display panel used in the display device according to this embodiment is not limited.

[0345] For example, when the display panel is a liquid crystal display panel, the display panel may include multiple gate lines, multiple data lines, and multiple pixels respectively disposed in multiple pixel regions defined by the intersections of the gate lines and the data lines. Furthermore, the display panel may include an array substrate, a top substrate, and a liquid crystal layer between the array substrate and the top substrate. The array substrate includes thin-film transistors (TFTs), which are switching elements for adjusting the light transmittance of each of the multiple pixels. The top substrate includes a color filter and / or a black matrix.

[0346] Furthermore, when the display panel is an organic light-emitting display panel, the display panel may include multiple gate lines, multiple data lines, and multiple pixels respectively disposed in multiple pixel regions defined by the intersections of the gate lines and data lines. Additionally, the display panel may include an array substrate, an organic light-emitting device layer, and an encapsulation substrate. The array substrate includes TFTs, which are elements for selectively applying voltage to each pixel. The organic light-emitting device layer is located on the array substrate, and the encapsulation substrate is disposed on the array substrate to cover the organic light-emitting device layer. The encapsulation substrate can protect the TFTs and the organic light-emitting device layer from external impacts and can prevent moisture or oxygen from penetrating into the organic light-emitting device layer. Furthermore, the layer disposed on the array substrate may include an inorganic light-emitting layer (e.g., a nanomaterial layer, quantum dots, etc.). As another embodiment of this disclosure, the layer disposed on the array substrate may include micro-light-emitting diodes.

[0347] The display panel may also include a backing, such as a metal plate, attached to the display panel. However, this embodiment is not limited to a metal plate, and the display panel may include another structure.

[0348] Features of the various embodiments of this disclosure may be linked or combined with each other in part or in whole, and, as will be fully understood by those skilled in the art, may interoperate with each other and be technically driven in various ways. Embodiments of this disclosure may be performed independently of each other or may be performed together in an interdependent relationship.

[0349] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. For ease of description, the scale of each element shown in the drawings differs from the actual scale; therefore, the invention is not limited to the scales shown in the drawings.

[0350] When a speaker is incorporated into a display device to generate sound, the speaker can be implemented as a diaphragm, allowing for a thinner display device. Diaphragm-type vibrating devices can be manufactured with a large area and applied to display devices with large areas. However, due to the lower piezoelectric properties of diaphragm-type vibrating devices, their application to large areas may be difficult due to low vibration. When ceramics are used to enhance piezoelectric properties, the durability of the diaphragm-type vibrating device may be weak, and the size of the ceramic may be limited. When a vibrating device comprising a piezoelectric composite including piezoelectric ceramics is applied to a display device, because the piezoelectric composite vibrates in the horizontal direction relative to the left-right direction (e.g., the horizontal direction relative to the left-right direction of the display device), it may not be able to cause sufficient vibration of the display device in the vertical (or front-back) direction. Therefore, it may be difficult to apply the vibrating device to a display device, and the desired sound output may not be able to reach the forward area in front of the display device. When using diaphragm-type piezoelectric elements in a display device, there may be a problem where the sound pressure level is lower than that of a speaker, such as an exciter. When multiple film piezoelectric elements are stacked into a multilayer stacked piezoelectric element for use in a display, power consumption may increase, and the thickness of the display device may also increase. Furthermore, while a vibrating device can output monophonic sound when placed on the rear surface of the display panel (e.g., the rear surface of a mobile device), the inventors have recognized the difficulty in outputting stereo sound. Therefore, the vibrating device can be further positioned around the perimeter of the display panel to achieve stereo sound; however, the inventors have recognized the difficulty in placing the exciter within a flexible device with curved portions in the display panel, and the fragility of the piezoelectric ceramic when a speaker incorporating piezoelectric ceramic is used.

[0351] Therefore, the inventors have conducted various experiments to realize a vibration device capable of producing stereo sound, applicable to flexible display devices, etc., and capable of vibrating in a direction perpendicular to the width direction of the display panel. Through various experiments, the inventors have invented a device comprising a vibration device with a novel structure, capable of producing stereo sound and applicable to flexible devices, etc. This will be described in detail below.

[0352] Figure 1 An apparatus according to an embodiment of the present disclosure is shown, and Figure 2 It is along Figure 1 The cross-sectional view shown is taken by line I-I'.

[0353] Reference Figure 1 and Figure 2The apparatus according to embodiments of the present disclosure may include a vibrating member and a vibrating device 200 disposed on the rear surface (or back side) of the vibrating member. For example, the vibrating member may be a vibrating object, a display panel, a vibrating plate, or a front member, but embodiments of the present disclosure are not limited thereto. Hereinafter, an example of a vibrating member being a display panel will be described.

[0354] Display panel 100 can display electronic or digital images. For example, display panel 100 can output light to display an image. Display panel 100 can be a curved display panel, or it can be any type of display panel, such as a liquid crystal display panel, an organic light-emitting display panel, a quantum dot light-emitting display panel, a micro-light-emitting diode display panel, and an electrophoretic display panel. Display panel 100 can be a flexible display panel. For example, display panel 100 can be a flexible light-emitting display panel, a flexible electrophoretic display panel, a flexible electrowetting display panel, a flexible micro-light-emitting diode display panel, or a flexible quantum dot light-emitting display panel, but the embodiments of this disclosure are not limited thereto.

[0355] The display panel 100 according to embodiments of the present disclosure may include a display area AA (or effective display area) for displaying an image based on the driving of a plurality of pixels. The display panel 100 may also include a non-display area IA (or ineffective display area) surrounding the display area AA, but the terminology is not limited thereto.

[0356] The display panel 100 according to embodiments of the present disclosure may include an anode electrode, a cathode electrode, and a light-emitting device, and may be configured to display images in a type such as top-emitting, bottom-emitting, or dual-emitting, depending on the structure of a pixel array layer including multiple pixels. In the top-emitting type, an image is displayed by outputting visible light generated from the pixel array layer to the forward region of the substrate. In the bottom-emitting type, an image is displayed by outputting visible light generated from the pixel array layer to the backward region of the substrate.

[0357] The display panel 100 according to embodiments of the present disclosure may include a pixel array portion disposed on a substrate. The pixel array portion may include a plurality of pixels that display an image based on signals provided via signal lines. The signal lines may include gating lines, data lines, and pixel driving power lines, etc., but embodiments of the present disclosure are not limited thereto.

[0358] Each of the plurality of pixels may include a pixel circuit layer, the pixel circuit layer including a driving thin film transistor (TFT) disposed in a pixel region consisting of a plurality of gate lines and / or a plurality of data lines, an anode electrode electrically connected to the driving TFT, a light-emitting layer formed on the anode electrode, and a cathode electrode electrically connected to the light-emitting layer.

[0359] The driving TFT can be configured at the transistor region of each pixel region disposed on the substrate. The driving TFT may include a gate electrode, a gate insulating layer, a semiconductor layer, a source electrode, and a drain electrode. The semiconductor layer of the driving TFT may include silicon such as amorphous silicon (a-Si), polycrystalline silicon (poly-Si), or low-temperature poly-Si, or may include oxides such as indium gallium zinc oxide (IGZO), but embodiments of this disclosure are not limited thereto.

[0360] The anode electrode can be located at an opening in each pixel area and can be electrically connected to the driving TFT.

[0361] The light-emitting device according to embodiments of the present disclosure may include an organic light-emitting device layer formed above an anode electrode. The organic light-emitting device layer may be configured to emit light of the same color (e.g., white light) for each pixel, or may be configured to emit light of a different color (e.g., red, green, or blue light) for each pixel. A cathode electrode (or common electrode) may be commonly connected to the organic light-emitting device layer disposed in each pixel region. For example, the organic light-emitting device layer may have a stacked structure comprising a single structure or two or more structures of the same color for each pixel. As another embodiment of the present disclosure, the organic light-emitting device layer may have a stacked structure comprising two or more structures comprising one or more different colors for each pixel. The two or more structures comprising one or more different colors may be configured with one or more of blue, red, yellow-green, and green, or combinations thereof, but embodiments of the present disclosure are not limited thereto. Examples of combinations may include blue and red, red and yellow-green, red and green, red / yellow-green / green, etc., but embodiments of the present disclosure are not limited thereto. Furthermore, the present disclosure may be applied regardless of the stacking order. A stacked structure comprising two or more structures having the same color or one or more different colors may further include a charge generation layer between the two or more structures. The charge generation layer may have a PN junction structure and may include N-type charge generation layers and P-type charge generation layers.

[0362] According to another embodiment of this disclosure, the light-emitting device may include a microlight-emitting diode (LED) device electrically connected to each of the anode electrode and the cathode electrode. The microlight-emitting diode device may be an LED implemented as an integrated circuit (IC) or a chip-type LED. The microlight-emitting diode device may include a first terminal electrically connected to the anode electrode and a second terminal electrically connected to the cathode electrode. The cathode electrode may be commonly connected to the second terminal of the microlight-emitting diode device disposed in each pixel region.

[0363] An encapsulation portion can be formed on a substrate to surround a pixel array portion, thereby preventing oxygen or moisture from penetrating into the light-emitting device layer of the pixel array portion. The encapsulation portion according to embodiments of this disclosure can be formed as a multilayer structure in which organic and inorganic material layers are alternately stacked, but the terminology is not limited thereto. The inorganic material layer prevents oxygen or moisture from penetrating into the light-emitting device layer of the pixel array portion. The organic material layer can be formed to have a relatively thicker thickness than the inorganic material layer to cover particles that may appear during the manufacturing process. For example, the encapsulation portion may include a first inorganic layer, an organic layer on the first inorganic layer, and a second inorganic layer on the organic layer. The organic layer may be a particle covering layer. A touch panel can be disposed on the encapsulation portion or on the rear surface of the pixel array portion.

[0364] The display panel 100 according to embodiments of the present disclosure may include a first substrate, a second substrate, and a liquid crystal layer. The first substrate may be an upper substrate or a thin-film transistor (TFT) array substrate. For example, the first substrate may include a pixel array (or display portion or display area), which includes a plurality of pixels respectively disposed in a plurality of pixel regions defined by the intersections between a plurality of gate lines and / or a plurality of data lines. Each of the plurality of pixels may include a TFT connected to the gate lines and / or data lines, a pixel electrode connected to the TFT, and a common electrode disposed adjacent to the pixel electrode and provided with a common voltage.

[0365] The first substrate may further include a pad portion disposed on a first periphery (or a first non-display portion) and a gating drive circuit disposed on a second periphery (or a second non-display portion).

[0366] The pad section can supply signals from an external source to the pixel array and / or the gating drive circuit. For example, the pad section may include multiple data pads connected to multiple data lines via multiple data link lines and / or multiple gating input pads connected to the gating drive circuit via gating control signal lines. For example, the size of the first substrate may be larger than that of the second substrate, but embodiments of this disclosure are not limited thereto.

[0367] The gating drive circuit according to embodiments of the present disclosure can be embedded (or integrated) into the second periphery of the first substrate, thereby connecting to multiple gating lines. For example, the gating drive circuit can be implemented using a shift register including a transistor formed by the same process as the TFT disposed in the pixel area. According to another embodiment of the present disclosure, the gating drive circuit can be implemented as an integrated circuit (IC) and can be disposed in the panel drive circuit without being embedded in the first substrate.

[0368] The second substrate can be a lower substrate or a color filter array substrate. For example, the second substrate may include a pixel pattern (or pixel-defined pattern) and a color filter layer, the pixel pattern (or pixel-defined pattern) including an opening region overlapping with a pixel region formed in the first substrate, and the color filter layer formed at the opening region. The second substrate may have a smaller size than the first substrate, but embodiments of this disclosure are not limited thereto. For example, the second substrate may overlap with the remainder of the upper substrate, excluding the first periphery. A sealant can be used to attach the second substrate to the remainder of the first substrate, excluding the first periphery, wherein a liquid crystal layer is located between the second substrate and the first substrate.

[0369] A liquid crystal layer may be disposed between a first substrate and a second substrate. The liquid crystal layer may include a liquid crystal containing liquid crystal molecules, wherein the alignment orientation of the liquid crystal molecules is changed based on an electric field generated by a common voltage and a data voltage applied to the pixel electrodes of each pixel.

[0370] The second polarizing member can be attached to the bottom surface of the second substrate and can polarize the light incident from the backlight unit into the liquid crystal layer. The first polarizing member can be attached to the top surface of the first substrate and can polarize the light that passes through the first substrate and is output to the outside.

[0371] The display panel 100 according to the present disclosure can drive the liquid crystal layer based on the electric field generated in each pixel by the data voltage and common voltage applied to each pixel, and thus can display an image based on light passing through the liquid crystal layer.

[0372] In another embodiment of the display panel 100 according to the present disclosure, the first substrate may be implemented as a color filter array substrate, and the second substrate may be implemented as a TFT array substrate. For example, the display panel 100 according to another embodiment of the present disclosure may have a type in which the upper and lower portions of the display panel 100 according to the embodiment of the present disclosure are reversed therebetween. For example, the pad portion of the display panel 100 according to another embodiment of the present disclosure may be covered by a separate mechanism or structure.

[0373] The display panel 100 according to embodiments of the present disclosure may include a curved portion that can be bent or flexed to have a curved shape or a specific radius of curvature.

[0374] The curved portion of the display panel 100 may be located on at least one or more of one or more of the peripherals of the display panel 100 that are parallel to each other. One and / or the peripheral of the display panel 100 implementing the curved portion may include only the non-display area IA, or may include the periphery of the display area AA and the non-display area IA. The display panel 100 including the curved portion implemented by bending the non-display area IA may have a single-sided bezel bending structure or a double-sided bezel bending structure. Furthermore, the display panel 100 including the curved portion implemented by bending the periphery of the display area AA and the non-display area IA may have a single-sided active bending structure or a double-sided active bending structure.

[0375] The vibration device 200 can cause the display panel 100 to vibrate at its rear surface, thereby providing the user (or viewer) with audible and / or tactile feedback based on the vibration of the display panel 100. The vibration device 200 can be implemented at the rear surface of the display panel 100 to directly vibrate the display panel 100. For example, the vibration device 200 can be a vibration generating device, a displacement device, a sound device, or a sound generating device, but embodiments of this disclosure are not limited thereto.

[0376] As an embodiment of this disclosure, the vibration device 200 can vibrate in accordance with an audio signal synchronized with the image displayed on the display panel 100, thereby causing the display panel 100 to vibrate. As another embodiment of this disclosure, the vibration device 200 can be disposed on the display panel 100 and can vibrate in accordance with a tactile feedback signal (or haptic feedback signal) synchronized with a user touch applied to a touch panel (or touch sensor layer) embedded in the display panel 100, thereby causing the display panel 100 to vibrate. Therefore, the display panel 100 can vibrate based on the vibration of the vibration device 200 to provide at least one of audio and tactile feedback to the user (or viewer).

[0377] The vibration device 200 according to embodiments of the present disclosure can be implemented with a size corresponding to the display area AA of the display panel 100. The size of the vibration device 200 can be 0.9 to 1.1 times the size of the display area AA, but embodiments of the present disclosure are not limited thereto. For example, the size of the vibration device 200 can be the same as or approximately the same as the size of the display area AA. For example, the size of the vibration device 200 can be the same as or approximately the same as the display area AA of the display panel 100. Therefore, the vibration device 200 can cover most of the area of ​​the display panel 100, and the vibration generated by the vibration device 200 can cause the entire display panel 100 to vibrate. Therefore, the sound localization may be higher, and user satisfaction can be improved. Furthermore, the contact area (or panel coverage) between the display panel 100 and the vibration device 200 can be increased, thus increasing the vibration area of ​​the display panel 100, thereby improving the mid-to-low tone sound generated based on the vibration of the display panel 100. Furthermore, the vibration device 200 applied to a large-size display device can vibrate the entire display panel 100, which has a large size (or large area). Therefore, the localization of sound based on the vibration of the display panel 100 can be further enhanced, thereby achieving improved sound effects. Thus, the vibration device 200 according to embodiments of the present disclosure can be disposed on the rear surface of the display panel 100 to cause the display panel 100 to vibrate sufficiently in the vertical (or front-to-back) direction, thereby outputting the desired sound to the forward region in front of the display device. For example, the vibration device 200 according to embodiments of the present disclosure can be disposed on the rear surface of the display panel 100 to cause the display panel 100 to vibrate sufficiently in the vertical (or front-to-back) direction relative to a first direction (X) of the display panel 100, thereby outputting the desired sound to the forward region in front of the display device.

[0378] The vibration device 200 according to the embodiments of this disclosure can be implemented as a membrane. Since the vibration device 200 can be implemented as a membrane, it can have a thickness thinner than the display panel 100; therefore, the thickness of the display device will not increase due to the arrangement of the vibration device 200. For example, the vibration device 200 may be referred to as a sound generating module, vibration generating device, displacement device, sound device, membrane actuator, membrane piezoelectric composite actuator, membrane loudspeaker, membrane piezoelectric loudspeaker, or membrane piezoelectric composite loudspeaker, using the display panel 100 as a vibrating plate; however, the embodiments of this disclosure are not limited thereto.

[0379] In another embodiment of this disclosure, the vibration device 200 may not be located on the rear surface of the display panel 100, but may be applied to a non-display panel instead of the display panel. For example, the non-display panel may be one or more of the following: wood, plastic, glass, cloth, paper, leather, vehicle interior materials, building interior ceilings, aircraft interior materials, etc., but the embodiments of this disclosure are not limited to these. In this case, the non-display panel may be used as a vibrating plate, and the vibration device 200 may cause the non-display panel to vibrate to output sound.

[0380] For example, the device according to embodiments of the present disclosure may include a vibrating member (or a vibrating object) and a vibrating device 200 disposed at the vibrating member. For example, the vibrating member may include a display panel containing pixels configured to display an image, or it may include a non-display panel. For example, the vibrating member may include a display panel containing pixels configured to display an image, or it may include one or more of the following: wood, plastic, glass, cloth, paper, leather, vehicle interior materials, vehicle windows, building interior ceilings, building windows, building interior materials, aircraft interior materials, and aircraft windows; however, embodiments of the present disclosure are not limited thereto. For example, the vibrating member may include one or more of the following: a display panel containing pixels configured to display an image, a screen panel projecting an image from a display device onto it, a lighting panel, a sign panel, vehicle interior materials, vehicle windows, vehicle exterior materials, building ceiling materials, building interior materials, building windows, aircraft interior materials, aircraft windows, and a reflector; however, embodiments of the present disclosure are not limited thereto. For example, the non-display panel may be a light-emitting diode (LED) lighting panel (or device), an organic light-emitting panel (or device), an inorganic light-emitting panel (or device), etc., but the embodiments of this disclosure are not limited thereto. For example, the vibrating member may include a display panel containing pixels configured to display an image, or may include one or more of a light-emitting diode (LED) lighting panel (or device), an organic light-emitting panel (or device), and an inorganic light-emitting panel (or device), but the embodiments of this disclosure are not limited thereto.

[0381] According to another embodiment of this disclosure, the vibrating member may include a plate, and the plate may include a metallic material, or may include one or more single non-metallic materials or composite non-metallic materials such as wood, plastic, glass, cloth, paper, and leather. However, this disclosure is not limited thereto. According to another embodiment of this disclosure, the vibrating member may include one or more of wood, plastic, glass, cloth, paper, and leather, but embodiments of this disclosure are not limited thereto. For example, paper may be a cone (or paper cone) for a loudspeaker. For example, a cone may be pulp or foam plastic, but embodiments of this disclosure are not limited thereto. For example, the vibrating member may be a vibrating object, a vibrating plate, or a front member, but embodiments of this disclosure are not limited thereto.

[0382] Vibration devices that include a single vibration generator may have the problem of not being able to output sufficient sound. For example, when a vibration device including a single vibration generator is applied to a display device such as a television (TV), it may be difficult to ensure sufficient sound. Therefore, when a vibration device implemented using two parallelly arranged vibration generators is applied to a device or display device, the attachment area between the display panel 100 and the vibration device can be increased. However, because the attachment area is increased, it may be difficult to attach the vibration device to the rear surface of the display panel 100 without air bubbles. For example, when the display panel 100 is a light-emitting display panel, it may be difficult to attach the vibration device to the encapsulation substrate without air bubbles. Furthermore, in a vibration device implemented using two parallelly arranged vibration generators, because the vibrations of adjacent vibration generators are different, there may be a problem of zoned vibration where different vibrations occur. Therefore, it may be difficult to output a sound with enhanced sound flatness. There may also be a problem that zoned vibration increases with the increase of the attachment area of ​​the vibration device.

[0383] The vibration device 200 according to embodiments of the present disclosure may include a plurality of vibration generators 210 and 230 overlapping each other. The vibration device 200 may include a plurality of vibration generators 210 and 230 that overlap or stack to shift in the same direction. For example, the vibration device 200 may include a plurality of vibration generators 210 and 230 that overlap or stack to have the same driving direction. For example, the vibration device 200 may include a plurality of vibration generators 210 and 230 that are stacked on top of each other and configured to vibrate in the same direction. For example, some of the plurality of vibration generators 210 and 230 may overlap in a direction perpendicular to the front surface of the display panel 100. For example, each of the vibration generators 210 and 230 may be a vibrating diaphragm, a shifting diaphragm, or a sound generator, but embodiments of the present disclosure are not limited thereto.

[0384] Multiple vibration generators 210 and 230 can overlap or stack to shift (or drive or vibrate) in the same direction. For example, in the overlapping or stacked state of multiple vibration generators 210 and 230, the multiple vibration generators 210 and 230 can contract or expand in the same driving direction (or shifting direction) based on a vibration driving signal, thus increasing or maximizing the displacement (or bending force or flexural force) or amplitude shift of the display panel 100. Therefore, the multiple vibration generators 210 and 230 can increase (or maximize) the displacement (or bending force or flexural force) or amplitude shift of the display panel 100, thereby enhancing the sound pressure level characteristics and / or the sound characteristics of the mid-to-low pitch vocal cords based on the vibration of the display panel 100. For example, the multiple vibration generators 210 and 230 can be implemented such that the multiple vibration generators 210 and 230 overlap or stack to have the same driving direction, thus increasing or maximizing the driving force of each of the multiple vibration generators 210 and 230. For example, multiple vibration generators 210 and 230 can be implemented such that the multiple vibration generators 210 and 230 are stacked to have the same driving direction, so that the vibration of each of the multiple vibration generators 210 and 230 can be increased or can be maximized. Therefore, the sound pressure level characteristics and / or the sound characteristics of the mid-to-low pitch bands of the sound generated by the display panel 100 based on the vibration of the multiple vibration generators 210 and 230 can be enhanced. For example, the mid-to-low pitch bands can be 200Hz to 1kHz, but embodiments of this disclosure are not limited thereto. For example, the high pitch bands can be 1kHz or higher or 3kHz or higher, but embodiments of this disclosure are not limited thereto.

[0385] Each of the plurality of vibration generators 210 and 230 may include a vibrating structure (or piezoelectric structure, or vibrating portion, or piezoelectric vibrating portion) comprising piezoelectric ceramic having piezoelectric properties, but embodiments of the present disclosure are not limited thereto. For example, each of the plurality of vibration generators 210 and 230 according to embodiments of the present disclosure may include a piezoelectric ceramic having a perovskite crystal structure, and thus may vibrate (or mechanically displace) in response to an externally applied electrical signal. For example, when a vibration drive signal (or voice signal) is applied, each of the plurality of vibration generators 210 and 230 may alternately and repeatedly contract and expand based on the inverse piezoelectric effect of the vibrating structure (or piezoelectric structure, or vibrating portion, or piezoelectric vibrating portion), and thus may displace (or vibrate) in the same direction based on the bending phenomenon of alternating bending directions, thereby increasing or maximizing the amount of displacement (or bending force or flexural force) or amplitude displacement of the vibration device 200 and / or display panel 100.

[0386] The first vibration generator 210, located at the display panel 100 among the plurality of vibration generators 210 and 230, can be a main vibration generator. For example, the remaining second vibration generator 230 among the plurality of vibration generators 210 and 230 can be at least one auxiliary vibration generator stacked on the first vibration generator 210. The second vibration generator 230 can have the same structure as the first vibration generator 210, but embodiments of this disclosure are not limited thereto.

[0387] The vibration device 200 according to the present disclosure may further include an adhesive member 250 (or a first connecting member) disposed between a plurality of vibration generators 210 and 230.

[0388] According to embodiments of the present disclosure, the adhesive member 250 can be disposed between a plurality of vibration generators 210 and 230. For example, the plurality of vibration generators 210 and 230 are symmetrical to each other with respect to the adhesive member 250. According to embodiments of the present disclosure, the adhesive member 250 may include a material comprising an adhesive layer having good adhesion or bonding force with respect to each of the plurality of vibration generators 210 and 230. For example, the adhesive member 250 may include a foam pad, double-sided foam pad, double-sided foam tape, double-sided tape, adhesive, etc., but embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the adhesive member 250 may include epoxy-based, acrylic-based, silicone-based, or polyurethane-based materials, but embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the adhesive member 250 may include a polyurethane-based material that has relatively tough properties compared to acrylic resins and polyurethanes. Therefore, vibration loss of the vibration device 200 caused by displacement interference between the plurality of vibration generators 210 and 230 can be minimized, or each of the plurality of vibration generators 210 and 230 can be freely displaced.

[0389] According to another embodiment of this disclosure, the adhesive member 250 may include one or more of thermosetting adhesives, photocurable adhesives, and thermal adhesives. For example, the adhesive member 250 may include a thermal adhesive. The thermal adhesive may be thermoactive or thermosetting. For example, the adhesive member 250 including the thermal adhesive may be used to attach or connect two adjacent vibration generators 210 and 230 by heat and pressure.

[0390] Multiple vibration generators 210 and 230 according to embodiments of this disclosure can be integrated into a single structure (or element or component) by a lamination process using an adhesive member 250. For example, multiple vibration generators 210 and 230 can be integrated into a single structure by a lamination process using rollers.

[0391] A method for manufacturing a vibration device 200 according to an embodiment of the present disclosure will now be described.

[0392] First, the first vibration generator 210 of the plurality of vibration generators 210 and 230 can be positioned at a predetermined location on the stage, and the adhesive member 250 can be aligned and placed on the first vibration generator 210 (first loading / alignment step). For example, the first portion 210a of each vibration structure 211 of the first vibration generator 210 can be aligned or placed on a virtual extension line VL.

[0393] Subsequently, the second vibration generator 230 of the plurality of vibration generators 210 and 230 can be loaded onto the stage and aligned and placed on the first vibration generator 210 (second loading / alignment process). For example, the second vibration generator 230 can be aligned and placed on the first vibration generator 210 by aligning and placing the second part (or end, or end, or outer surface, or each peripheral part) of each vibration structure 211 of the second vibration generator 230 on the virtual extension line VL or on the first part 210a of each vibration structure 211 of the first vibration generator 210.

[0394] Subsequently, the first vibration generator 210 can be initially bonded or connected to the second vibration generator 230 via the adhesive member 250 (initial bonding step). For example, the initial bonding step can be performed by pressing at least one of the first vibration generator 210 and the second vibration generator 230 with a predetermined pressure. For example, the initial bonding step can be omitted.

[0395] Subsequently, the first vibration generator 210 and the second vibration generator 230, which are initially combined or connected to each other, can be fully combined or connected to each other (main combination process).

[0396] For example, when the adhesive component 250 includes a photocurable adhesive, the main bonding process can irradiate light onto the adhesive component 250 disposed between the first vibration generator 210 and the second vibration generator 230. Then, the first vibration generator 210 can be mainly bonded or connected to the second vibration generator 230 through the photocuring process that cures the adhesive component 250. For example, when at least one of the first vibration generator 210 and the second vibration generator 230 is pressed under a certain pressure, the photocuring process can irradiate light onto the first vibration generator 210 and the second vibration generator 230, but the embodiments of this disclosure are not limited to this.

[0397] In another embodiment of this disclosure, when the adhesive member 250 includes a thermosetting adhesive, the main bonding process can bond or connect the first vibration generator 210 to the second vibration generator 230 via a thermosetting process. This thermosetting process cures the adhesive member 250 by applying heat to the adhesive member 250 disposed between the first vibration generator 210 and the second vibration generator 230. For example, when at least one of the first vibration generator 210 and the second vibration generator 230 is pressed under a certain pressure, the thermosetting process can apply heat to the first vibration generator 210 and the second vibration generator 230; however, embodiments of this disclosure are not limited to this.

[0398] In another embodiment of this disclosure, when the adhesive member 250 includes a thermal adhesive, the main bonding process can bond or connect the first vibration generator 210 to the second vibration generator 230 through a thermal bonding process, which cures the adhesive member 250 by applying predetermined heat and predetermined pressure to the adhesive member 250 disposed between the first vibration generator 210 and the second vibration generator 230.

[0399] Subsequently, the multiple vibration generators 210 and 230, which are integrated into a single structure (or element), can be unloaded from the table via the adhesive member 250.

[0400] The device according to embodiments of the present disclosure may further include a connecting member 150 (or a second connecting member) disposed between the display panel 100 and the vibration device 200.

[0401] The connecting member 150 can be disposed between the display panel 100 and the vibration device 200, thereby connecting or attaching the vibration device 200 to the rear surface of the display panel 100. For example, the vibration device 200 can be connected or attached to the rear surface of the display panel 100 via the connecting member 150, so the vibration device 200 can be supported by or disposed on the rear surface of the display panel 100.

[0402] The connecting member 150 according to embodiments of the present disclosure may include a material comprising an adhesive layer having good adhesion or bonding force with respect to each of the rear surfaces of the display panel 100 and the vibration device 200. For example, the connecting member 150 may include a foam pad, double-sided foam pad, double-sided foam tape, double-sided adhesive tape, adhesive, etc., but embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the connecting member 150 may include epoxy-based, acrylic-based, silicone-based, or polyurethane-based materials, but embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the connecting member 150 may differ from the adhesive layer of the adhesive member 250. For example, the adhesive layer of the connecting member 150 may include an acrylic material that has relatively better adhesion and hardness than acrylic and polyurethane materials. Therefore, vibrations from the vibration device 200 can be well transmitted to the display panel 100.

[0403] The adhesive layer of the connecting member 150 may further include additives, such as tackifiers or adhesive enhancers, wax components, antioxidants, etc. Additives can prevent or reduce the separation (peeling) of the connecting member 150 from the display panel 100 due to vibration of the vibration device 200. For example, the tackifier may be a rosin derivative, etc., and the wax component may be paraffin wax, etc. For example, the antioxidant may be a phenolic antioxidant, such as a thioester, but embodiments of this disclosure are not limited thereto.

[0404] According to another embodiment of this disclosure, the connecting member 150 may further include a hollow portion between the display panel 100 and the vibration device 200. The hollow portion of the connecting member 150 may provide an air gap between the display panel 100 and the vibration device 200. Due to the air gap, sound waves (or sound pressure levels) based on the vibration of the vibration device 200 may not be dispersed by the connecting member 150 and may be concentrated on the display panel 100. Therefore, the loss of vibration caused by the connecting member 150 can be minimized, thereby increasing the acoustic characteristics and / or sound pressure level characteristics of the sound generated based on the vibration of the display panel 100.

[0405] The device according to embodiments of the present disclosure may further include a support member 300 disposed on the rear surface of the display panel 100.

[0406] The support member 300 may cover the rear surface of the display panel 100. For example, the support member 300 may cover the entire rear surface of the display panel 100, with a gap space GS therebetween. For example, the support member 300 may include at least one or more of glass, metal, and plastic materials. For example, the support member 300 may be a rear surface structure, support structure, support cover, rear member, housing, shell, or assembly structure, but the embodiments of this disclosure are not limited thereto. For example, the support member 300 may be referred to by other terms such as bottom cover, base plate, rear cover, base frame, metal frame, metal chassis, chassis base, or m-chassis. For example, the support member 300 may be implemented as any type of frame or plate structure disposed on the rear surface of the display panel 100.

[0407] The support member 300 according to the embodiments of this disclosure may include a first support member 310 and a second support member 330.

[0408] The first support member 310 may cover the rear surface of the display panel 100. For example, the first support member 310 may cover the entire rear surface of the first support member 310. For example, the first support member 310 may be a member that covers the entire rear surface of the first support member 310. For example, the first support member 310 may include one or more materials selected from glass, metal, and plastic. For example, the first support member 310 may be a first rear structure, a first support structure, a first support cover, a first rear cover, a first rear member, an inner panel, or an internal panel, but the embodiments of this disclosure are not limited thereto.

[0409] The first support member 310 may be spaced apart from the last surface of the display panel 100, with a gap space GS therebetween. For example, the gap space GS may be referred to as an air gap, vibration space, sound resonance chamber, etc., but the embodiments of this disclosure are not limited thereto.

[0410] The second support member 330 may be disposed on the rear surface of the first support member 310. The second support member 330 may be a member covering the entire rear surface of the first support member 310. For example, the second support member 330 may include at least one or more of glass, metal, and plastic materials. For example, the second support member 330 may be a second rear structure, a second support structure, a second support cover, a second rear cover, a second rear member, an outer plate, an outer panel, a rear plate, a back plate, or a rear cover, but the embodiments of this disclosure are not limited thereto.

[0411] The support member 300 according to the embodiments of this disclosure may further include a connecting member (or a third connecting member) 350.

[0412] A connecting member 350 may be disposed between the first support member 310 and the second support member 330. For example, the first support member 310 and the second support member 330 may be connected or joined to each other by the connecting member 350. For example, the connecting member 350 may be an adhesive resin, double-sided tape, double-sided foam tape, double-sided foam pad, or double-sided adhesive foam pad, but the embodiments of this disclosure are not limited thereto. For example, the connecting member 350 may have elasticity for absorbing impact, but the embodiments of this disclosure are not limited thereto. As an embodiment of this disclosure, the connecting member 350 may be disposed over the entire area between the first support member 310 and the second support member 330. As an embodiment of this disclosure, the connecting member 350 may be provided in a mesh structure, the mesh structure including an air gap between the first support member 310 and the second support member 330.

[0413] The apparatus according to embodiments of the present disclosure may further include an intermediate frame 400.

[0414] An intermediate frame 400 may be disposed between the rear periphery of the display panel 100 and the front periphery of the support member 300. The intermediate frame 400 may support at least one or more of the rear periphery of the display panel 100 and the front periphery of the support member 300, and may surround one or more side surfaces of each of the display panel 100 and the support member 300. The intermediate frame 400 may provide a clearance space GS between the display panel 100 and the support member 300. The intermediate frame 400 may be referred to as a connecting member, frame, frame member, intermediate member, side cover member, intermediate housing, intermediate cover, intermediate chassis, etc., but embodiments of this disclosure are not limited thereto.

[0415] The intermediate frame 400 according to embodiments of the present disclosure may include a first support portion 410 and a second support portion 430. For example, the first support portion 410 may be a support portion, but embodiments of the present disclosure are not limited thereto. For example, the second support portion 430 may be a sidewall portion, but embodiments of the present disclosure are not limited thereto.

[0416] The first support portion 410 can be disposed between the rear periphery of the display panel 100 and the front periphery of the support member 300, thereby providing a gap space GS between the display panel 100 and the support member 300. The front surface of the first support portion 410 can be connected to or attached to the rear periphery of the display panel 100 via the first frame connecting member 401. The rear surface of the first support portion 410 can be connected to or attached to the front periphery of the support member 300 via the second frame connecting member 403. For example, the first support portion 410 can have a single image frame structure containing a square shape or a frame structure containing multiple divided strip shapes, but the embodiments of this disclosure are not limited thereto.

[0417] The second support portion 430 may be arranged parallel to the thickness direction Z of the display device or device. For example, the second support portion 430 may be vertically connected to the outer surface of the first support portion 410 parallel to the thickness direction Z of the display device or device. The second support portion 430 may surround one or more of the outer surfaces of the display panel 100 and the support member 300, thereby protecting the outer surface of each of the display panel 100 and the support member 300. The first support portion 410 may protrude from the inner surface of the second support portion 430 toward the gap space GS between the display panel 100 and the support member 300.

[0418] The device according to embodiments of the present disclosure may include a panel connecting member in place of the intermediate frame 400.

[0419] A panel connecting member can be disposed between the rear periphery of the display panel 100 and the front periphery of the support member 300, and can provide a gap space GS between the display panel 100 and the support member 300. The panel connecting member can be disposed between the rear periphery of the display panel 100 and the front periphery of the support member 300 to bond the display panel 100 and the support member 300. For example, the panel connecting member can be double-sided tape, single-sided tape, double-sided foam tape, single-sided foam tape, double-sided foam pad, single-sided foam pad, or double-sided adhesive foam pad, but embodiments of this disclosure are not limited thereto. For example, the panel connecting member can include epoxy-based, acrylic-based, silicone-based, or polyurethane-based materials, but embodiments of this disclosure are not limited thereto. For example, the adhesive layer of the panel connecting member can include a polyurethane-based material that has relatively tougher properties compared to acrylic resins and polyurethanes. Therefore, vibrations transmitted to the support member 300 of the display panel 100 can be minimized.

[0420] In the device according to embodiments of the present disclosure, when the device includes a panel connecting member instead of an intermediate frame 400, the support member 300 may include a curved sidewall that bends from an end (or end portion) of the second support member 330 and surrounds the outer surface (or outer sidewall) of each of the first support member 310, the panel connecting member, and the display panel 100. The curved sidewall according to embodiments of the present disclosure may have a single sidewall structure or a rolled edge structure. A rolled edge structure may be a structure in which the ends of any member are bent into a curved shape and overlap or are parallel to each other. For example, to enhance aesthetics, the curved sidewall may include a first curved sidewall bending from one side of the second support member 330 and a second curved sidewall bending from the first curved sidewall to the region between the first curved sidewall and the outer surface of the display panel 100. The second curved sidewall may be separate from the inner surface of the first curved sidewall. Therefore, the second curved sidewall may prevent the outer surface of the display panel 100 from contacting the inner surface of the first curved sidewall, or may prevent lateral external impacts from being transmitted to the outer surface of the display panel 100. According to another embodiment of this disclosure, the intermediate frame 400 may be omitted in the device according to this embodiment. The device may include a panel connecting member or an adhesive member in place of the intermediate frame 400. According to another embodiment of this disclosure, the device may include a separator in place of the intermediate frame 400.

[0421] Figure 3 A vibration device according to an embodiment of the present disclosure is shown. Figure 4 It is along Figure 3 The cross-sectional view taken by line II-II' shown.

[0422] Reference Figures 2 to 4 The vibration device 200 according to the embodiments of the present disclosure may include a plurality of vibration generators 210 and 230 and an adhesive member 250.

[0423] Multiple vibration generators 210 and 230 may overlap or stack to shift (or drive or vibrate) in the same direction to maximize the amplitude shift of the vibration device 200 and / or the amplitude shift of the display panel 100. For example, the multiple vibration generators 210 and 230 may have substantially the same size, but embodiments of this disclosure are not limited thereto. For example, the multiple vibration generators 210 and 230 may have substantially the same size within the tolerance range of the manufacturing process, but embodiments of this disclosure are not limited thereto. Therefore, the multiple vibration generators 210 and 230 can maximize the amplitude shift of the vibration device 200 and / or the amplitude shift of the display panel 100. One side (or end, or end, or outer surface, or each corner) 210a and 230a of each of the multiple vibration generators 210 and 230 may be aligned on a virtual extension line VL extending along the thickness direction Z of the display panel 100, or may be disposed at the virtual extension line VL. For example, one side (or end, or outer surface, or each corner) 210a and 230a of each of the plurality of vibration generators 210 and 230 can be aligned in a direction perpendicular to the front surface of the display panel 100.

[0424] For example, in at least one of the multiple vibration generators 210 and 230, the displacement direction and amplitude displacement of the multiple vibration generators 210 and 230 may not match, therefore, the amplitude displacement of the vibration device 200 may not be maximized. For example, when at least one of the multiple vibration generators 210 and 230 has different sizes of error ranges deviating from the manufacturing process, the displacement direction and amplitude displacement of the multiple vibration generators 210 and 230 may not match, therefore, the amplitude displacement of the vibration device 200 may not be maximized. Furthermore, when at least one of the multiple vibration generators 210 and 230 is displaced in different directions, the displacement directions of the multiple vibration generators 210 and 230 may not match, therefore, the amplitude displacement of the vibration device 200 may not be maximized.

[0425] Vibration device 200 according to embodiments of the present disclosure may include two or more vibration generators 210 and 230, which are stacked and shifted in the same direction. In the following description, examples of vibration device 200 including vibration generators 210 and 230 will be described.

[0426] According to embodiments of this disclosure, the first vibration generator 210 can be connected to or disposed on the rear surface of the display panel 100 via a connecting member 150 (or a second connecting member). The second vibration generator 230 can be disposed on or attached to the first vibration generator 210 via an adhesive member 250 (or a first connecting member).

[0427] According to embodiments of the present disclosure, both the first vibration generator 210 and the second vibration generator 230 may include a vibration structure 211, a first protective member 213, and a second protective member 215.

[0428] The vibration structure 211 may include a piezoelectric material (or piezoelectric element) having piezoelectric properties (or piezoelectric effect). For example, a piezoelectric material may have the property that, when pressure or torsion is applied to a crystal structure by an external force, a potential difference arises due to dielectric polarization caused by changes in the relative positions of positive (+) ions and negative (-) ions, and vibration is generated by an electric field based on the voltage applied thereto. For example, the vibration structure 211 may be a vibration generating structure, a sound generating structure, a vibration generating portion, a vibration portion, a sound generating portion, a piezoelectric structure, or a displacement structure, but embodiments of this disclosure are not limited thereto.

[0429] The vibration structure 211 according to the embodiments of the present disclosure may include: a vibration portion 211a including a piezoelectric material, a first electrode portion 211b disposed on a first surface of the vibration portion 211a, and a second electrode portion 211c disposed on a second surface of the vibration portion 211a that is opposite to or different from the first surface.

[0430] The vibrating portion 211a may include a piezoelectric material. The vibrating portion 211a may be referred to as a vibrating layer, a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a piezoelectric vibrating portion, a piezoelectric vibrating layer, a piezoelectric composite material, a displacement portion, a piezoelectric displacement portion, a piezoelectric displacement layer, a sound wave generating portion, a piezoelectric material portion, an electroactive portion, an organic / inorganic material layer, an inorganic material layer, an organic / inorganic material portion, or an inorganic material portion, but the embodiments of the present invention are not limited thereto.

[0431] The vibrating part 211a can be formed of a transparent, translucent or opaque piezoelectric material, and the vibrating part 211a can be transparent, translucent or opaque.

[0432] The vibrating portion 211a can be configured as a ceramic matrix material for generating relatively high vibrations, or it can be configured as a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure can exhibit both piezoelectric and inverse piezoelectric effects, and can be an oriented plate-like structure. The perovskite crystal structure can be represented by the chemical formula "ABO3". In the chemical formula, "A" can include a divalent metal element, and "B" can include a tetravalent metal element. As one embodiment of this disclosure, in the chemical formula "ABO3", "A" and "B" can be cations, and "O" can be anion. For example, the chemical formula "ABO3" can include at least one or more of PbTiO3, PbZrO3, BaTiO3, and SrTiO3, but embodiments of this disclosure are not limited thereto.

[0433] When a perovskite crystal structure includes a central ion (e.g., lead titanate (II)), the position of the titanium (Ti) ion can be altered by external stress or a magnetic field, thus changing the polarization and generating a piezoelectric effect. For example, in a perovskite crystal structure, a cubic shape corresponding to a symmetrical structure can be transformed into a tetragonal (e.g., quadrilateral), cubic, or rhombohedral structure corresponding to an asymmetrical structure, thereby generating a piezoelectric effect. In the tetragonal (e.g., quadrilateral), cubic, or rhombohedral structures corresponding to asymmetrical structures, the polarization at the morphological phase boundaries may be high, and the polarization can easily rearrange, thus the perovskite crystal structure may possess high piezoelectric properties.

[0434] The vibration portion 211a according to the embodiments of this disclosure may include one or more of lead (Pb), zirconium (Zr), titanium (Ti), zinc (Zn), nickel (Ni) and niobium (Nb), but the embodiments of this disclosure are not limited thereto.

[0435] In another embodiment of this disclosure, the vibrating part 211a may include a lead zirconate titanate (PZT) based material, which includes lead (Pb), zirconium (Zr), and titanium (Ti), or may include a lead nickel zirconate (PZNN) based material, which includes lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but the embodiments of this disclosure are not limited thereto. Furthermore, the vibrating part 211a may include at least one or more of CaTiO3, BaTiO3, and SrTiO3 that do not contain Pb, but the embodiments of this disclosure are not limited thereto.

[0436] According to another embodiment of this disclosure, the vibrating portion 211a may have a piezoelectric deformation coefficient "d33" of 1,000 pC / N or greater in the thickness direction Z. Therefore, the vibration device 200 can be applied to display panels with large sizes and may require a high piezoelectric deformation coefficient "d33" to have sufficient vibrational or piezoelectric properties. For example, the vibrating portion 211a may include a PZT-based material (PbZrTiO3) as the main component and may include a softening dopant material doped into the "A" site (Pb) and a relaxor ferroelectric material doped into the "B" site (ZrTi).

[0437] The softener dopant material can enhance the piezoelectric and dielectric properties of the vibrating portion 211a, and for example, can increase the piezoelectric deformation coefficient "d33" of the vibrating portion 211a. The inventors have demonstrated that piezoelectric and dielectric properties decrease when the softener dopant material includes a monovalent element "+1". For example, when the softener dopant material includes potassium (K) and rubidium (Rb), the piezoelectric and dielectric properties may decrease. Therefore, through various experiments, the inventors have realized that, in order to enhance piezoelectric and dielectric properties, the softener dopant material should include binary elements "+2" to ternary elements "+3". The softener dopant material according to embodiments of this disclosure can include binary elements "+2" to ternary elements "+3". Quasi-isomorphic phase boundaries (MPBs) can be achieved by adding the softener dopant material to PZT-based materials (PbZrTiO3), thus enhancing piezoelectric and dielectric properties. For example, softener dopant materials may include strontium (Sr), barium (Ba), lanthanum (La), neodymium (Nd), calcium (Ca), yttrium (Y), erbium (Er), or ytterbium (Yb). For instance, ions (Sr²⁺, Ba²⁺, La²⁺, Nd³⁺, Ca²⁺, Y³⁺, ​​Er³⁺, Yb³⁺) of softener dopant materials doped into PZT-based materials (PbZrTiO₃) can replace a portion of the lead (Pb) in the PZT-based material (PbZrTiO₃), and the substitution rate can be from about 2 mol% to about 20 mol%. For example, when the substitution rate is less than 2 mol% or greater than 20 mol%, the perovskite crystal structure may break, and therefore, the electromechanical coupling coefficient “kP” and the piezoelectric deformation coefficient “d³³” may decrease. When softener dopant materials are replaced, MPB can be formed, and MPB with high piezoelectric and dielectric properties can be realized, thereby realizing a vibration device with high piezoelectric and high dielectric properties.

[0438] According to embodiments of this disclosure, relaxor ferroelectric materials doped into PZT-based materials (PbZrTiO3) can enhance the electrical deformation properties of the vibrating portion 211a. The relaxor ferroelectric materials according to embodiments of this disclosure may include lead magnesium niobate (PMN)-based materials or lead nickel niobate (PNN)-based materials, but embodiments of this disclosure are not limited thereto. PMN-based materials may include Pb, Mg, and Nb, and may include, for example, Pb(Ni,Nb)O3. For example, the relaxor ferroelectric material doped into PZT-based materials (PbZrTiO3) may replace a portion of each of zirconium (Zr) and titanium (Ti) in the PZT-based materials (PbZrTiO3), and its substitution rate may be from about 5 mol% to about 25 mol%. For example, when the substitution rate is less than 5 mol% or greater than 25 mol%, the perovskite crystal structure may break, and therefore, the electromechanical coupling coefficient "kP" and the piezoelectric deformation coefficient "d33" may decrease.

[0439] According to embodiments of this disclosure, the vibrating portion 211a may further include a donor material doped into the "B" site (ZrTi) of the PZT-based material (PbZrTiO3) to further enhance the piezoelectric coefficient. For example, the donor material doped into the "B" site (ZrTi) may include a quaternary element "+4" or a hexaternary element "+6". For example, the donor material doped into the "B" site (ZrTi) may include tellurium (Te), germanium (Ge), uranium (U), bismuth (Bi), niobium (Nb), tantalum (Ta), antimony (Sb), or tungsten (W).

[0440] The vibration portion 211a according to the embodiments of this disclosure can be represented by the following formula 1.

[0441] [Formula 1]

[0442] (PbA-BCB)((Mg1 / 3Nb2 / 3)a(Ni1 / 3Nb2 / 3)bZrcTid)O3

[0443] Here, C can be one of Ca, Sr, and Ba. Furthermore, a+b+c+d=1, 0.02≤B≤0.20, 0.80≤AB≤0.98, 0.05≤a≤0.25, 0.05≤b≤0.25, 0.10≤c≤0.50, and 0.10≤d≤0.50.

[0444] According to the embodiments of this disclosure, the vibration portion 211a can have a piezoelectric deformation coefficient "d33" of 1000 pC / N or greater in the thickness direction Z, thereby realizing a vibration device with enhanced vibration characteristics. For example, a vibration device with enhanced vibration characteristics can be realized in a large-area device or a large-area display device.

[0445] The vibration portion 211a according to the embodiments of the present disclosure can be configured as circular, elliptical or polygonal, but the embodiments of the present disclosure are not limited thereto.

[0446] The first electrode portion 211b may be disposed on the first surface (or top surface) of the vibrating portion 211a. For example, the first electrode portion 211b may be electrically connected to or attached to the first surface of the vibrating portion 211a. For example, the first electrode portion 211b may have a single electrode type disposed on the entire first surface of the vibrating portion 211a. For example, the first electrode portion 211b may have the same shape as the vibrating portion 211a, but embodiments of the present disclosure are not limited thereto. The first electrode portion 211b according to embodiments of the present disclosure may be formed of a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material. For example, the transparent conductive material or the semi-transparent conductive material may include indium tin oxide (ITO) or indium zinc oxide (IZO), but embodiments of the present disclosure are not limited thereto. The opaque conductive material may include aluminum (Al), copper (Cu), gold (Au), silver (Ag), molybdenum (Mo), Mg, etc., but embodiments of the present disclosure are not limited thereto.

[0447] The second electrode portion 211c may be disposed on a second surface (or rear surface) of the vibrating portion 211a that is opposite to or different from the first surface. For example, the second electrode portion 211c may be electrically connected to or attached to the second surface of the vibrating portion 211a. For example, the second electrode portion 211c may have a single electrode type disposed on the entire second surface of the vibrating portion 211a. The second electrode portion 211c may have the same shape as the vibrating portion 211a, but embodiments of the present disclosure are not limited thereto. The second electrode portion 211c according to embodiments of the present disclosure may be formed of a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material. For example, the second electrode portion 211c may be formed of the same material as the first electrode portion 211b, but embodiments of the present disclosure are not limited thereto. As another embodiment of the present disclosure, the second electrode portion 211c may be formed of a different material than the first electrode portion 211b.

[0448] In each of the first vibration generator 210 and the second vibration generator 230, the first electrode portion 211b may be positioned closer to the display panel 100 than the second electrode portion 211c, but embodiments of this disclosure are not limited thereto. For example, in a vibration device 200 comprising a plurality of vibration generators 210 and 230 according to an embodiment of this disclosure, the first electrode portion 211b of each of the plurality of vibration generators 210 and 230 may be positioned closer to the display panel 100 than the second electrode portion 211c. For example, one of the first electrode portions 211b of the first vibration generator 210 and the second vibration generator 230 may be referred to as a third electrode portion, but embodiments of this disclosure are not limited thereto. One of the second electrode portions 211c of the first vibration generator 210 and the second vibration generator 230 may be referred to as a fourth electrode portion, but embodiments of this disclosure are not limited thereto.

[0449] The vibrating portion 211a can be polarized in a specific temperature atmosphere or in a temperature atmosphere that changes from high temperature to room temperature by applying a specific voltage to the first electrode portion 211b and the second electrode portion 211c, but the embodiments of this disclosure are not limited thereto. For example, the vibrating portion 211a can be displaced or vibrated by alternately and repeatedly contracting and expanding based on the inverse piezoelectric effect according to a vibration drive signal (or sound signal or voice signal) applied from the outside to the first electrode portion 211b and the second electrode portion 211c.

[0450] The vibration structure 211 (or vibration portion 211a) of the first vibration generator 210 may have the same size as the vibration structure 211 (or vibration portion 211a) of the second vibration generator 230. To maximize or increase the displacement or amplitude displacement of the vibration device 200, the vibration structure 211 (or vibration portion 211a) of the first vibration generator 210 may substantially overlap or stack with the vibration structure 211 (or vibration portion 211a) of the second vibration generator 230 without interleaving. For example, the vibration structure 211 (or vibration portion 211a) of the first vibration generator 210 may substantially overlap or stack with the vibration structure 211 (or vibration portion 211a) of the second vibration generator 230 without interleaving within the tolerance range of the manufacturing process. For example, the vibration structure 211 (or vibration portion 211a) of the first vibration generator 210 and the vibration structure 211 (or vibration portion 211a) of the second vibration generator 230 can be implemented as a stacked structure with the same size and overlapping but not intersecting. Therefore, the displacement or amplitude displacement of the vibration device 200 can be maximized or increased.

[0451] According to embodiments of this disclosure, the first portion (or end, end, outer surface, or each corner) 210a of each vibration structure 211 (or vibration part 211a) of the first vibration generator 210 can be aligned with or disposed at the virtual extension line VL. For example, the first portion (or end, end, outer surface, or each corner) 210a of each vibration structure 211 (or vibration part 211a) of the first vibration generator 210 can be precisely aligned with or disposed at the virtual extension line VL. The second portion (or end, end, outer surface, or each corner) 230a of each vibration structure 211 (or vibration part 211a) of the second vibration generator 230 can be aligned with or disposed at the virtual extension line VL. For example, the second portion (or end, or outer surface, or each corner) 230a of each vibration structure 211 (or vibration part 211a) of the second vibration generator 230 can be precisely aligned on the virtual extension line VL, or can be precisely positioned at the virtual extension line VL. The first portion 210a of each vibration structure 211 (or vibration part 211a) of the first vibration generator 210 can be aligned or overlapped with the second portion 230a of each vibration structure 211 (or vibration part 211a) of the second vibration generator 230. For example, the first portion 210a of the vibration structure 211 (or vibration part 211a) of the first vibration generator 210 can be precisely aligned or overlapped with the second portion 230a of each vibration structure 211 (or vibration part 211a) of the second vibration generator 230. For example, the first portion 210a of the vibration structure 211 (or vibration part 211a) of the first vibration generator 210 can correspond to the second portion 230a of each vibration structure 211 (or vibration part 211a) of the second vibration generator 230. Therefore, in the vibration device 200 according to an embodiment of this disclosure, the vibration structure 211 (or first vibration structure) of the first vibration generator 210 and the vibration structure 211 (or second vibration structure) of the second vibration generator 230 can be shifted in the same direction, thus maximizing or increasing the displacement or amplitude shift of the vibration device 200. Therefore, the displacement (or bending force or flexural force) or amplitude shift of the display panel 100 can be increased (or maximized).

[0452] In the first vibration generator 210, a first protective member 213 may be disposed at the first electrode portion 211b. The first protective member 213 protects the first electrode portion 211b. A second protective member 215 may be disposed at the second electrode portion 211c. The second protective member 215 protects the second electrode portion 211c. For example, the first protective member 213 and the second protective member 215 of the first vibration generator 210 may be formed of plastic, fiber, or wood materials, but the embodiments disclosed herein are not limited thereto. For example, in the first vibration generator 210, the first protective member 213 may be formed of the same or different material as the second protective member 215. Either the first protective member 213 or the second protective member 215 of the first vibration generator 210 may be connected or coupled to the display panel 100 via a connecting member (or a second connecting member) 150. For example, the first protective member 213 of the first vibration generator 210 may be connected or coupled to the display panel 100 via a connecting member (or a second connecting member) 150.

[0453] In the second vibration generator 230, a first protective member 213 may be disposed at the first electrode portion 211b. The first protective member 213 protects the first electrode portion 211b. A second protective member 215 may be disposed at the second electrode portion 211c. The second protective member 215 protects the second electrode portion 211c. For example, the first protective member 213 and the second protective member 215 of the second vibration generator 230 may be formed of plastic, fibrous, or wood materials, but embodiments of this disclosure are not limited thereto. For example, in the second vibration generator 230, the first protective member 213 may be formed of the same or different material as the second protective member 215. Either the first protective member 213 or the second protective member 215 of the second vibration generator 230 may be connected or coupled to the first vibration generator 210 by an adhesive member (or a first connecting member) 250. For example, the first protective member 213 of the second vibration generator 230 may be connected or coupled to the second protective member 215 of the first vibration generator 210 by an adhesive member 250.

[0454] In each of the first vibration generator 210 and the second vibration generator 230, each of the first protective member 213 and the second protective member 215 may be a polyimide (PI) film or a polyethylene terephthalate (PET) film, but the embodiments of this disclosure are not limited thereto.

[0455] One or more of the first vibration generator 210 and the second vibration generator 230 according to embodiments of the present disclosure may further include a first adhesive layer 212 and a second adhesive layer 214.

[0456] In the first vibration generator 210, a first adhesive layer 212 may be disposed between the vibration structure 211 and the first protective member 213. For example, the first adhesive layer 212 may be disposed between the first electrode portion 211b of the vibration structure 211 and the first protective member 213. The first protective member 213 may be disposed on the first surface (or the first electrode portion 211b) of the vibration structure 211 via the first adhesive layer 212. For example, the first protective member 213 may be coupled or attached to the first surface (or the first electrode portion 211b) of the vibration structure 211 via a film lamination process using the first adhesive layer 212.

[0457] In the first vibration generator 210, a second adhesive layer 214 may be disposed between the vibration structure 211 and the second protective member 215. For example, the second adhesive layer 214 may be disposed between the second electrode portion 211c of the vibration structure 211 and the second protective member 215. The second protective member 215 may be disposed on the second surface (or the second electrode portion 211c) of the vibration structure 211 via the second adhesive layer 214. For example, the second protective member 215 may be coupled or connected to the second surface (or the second electrode portion 211c) of the vibration structure 211 via a film lamination process using the second adhesive layer 214.

[0458] In the first vibration generator 210, the first adhesive layer 212 and the second adhesive layer 214 can be connected or joined to each other between the first protective member 213 and the second protective member 215. For example, in the first vibration generator 210, the first adhesive layer 212 and the second adhesive layer 214 can be connected or joined to each other at the peripheral portion between the first protective member 213 and the second protective member 215. Therefore, in the first vibration generator 210, the vibration structure 211 can be surrounded by the first adhesive layer 212 and the second adhesive layer 214. For example, the first adhesive layer 212 and the second adhesive layer 214 can completely surround the entire vibration structure 211. For example, the first adhesive layer 212 and the second adhesive layer 214 can be referred to as cover members, but the embodiments of this disclosure are not limited thereto. When the first adhesive layer 212 and the second adhesive layer 214 are cover members, the first protective member 213 can be disposed on the first surface of the cover member, and the second protective member 215 can be disposed on the second surface of the cover member.

[0459] In the second vibration generator 230, a first adhesive layer 212 may be disposed between the vibration structure 211 and the first protective member 213. For example, the first adhesive layer 212 may be disposed between the first electrode portion 211b of the vibration structure 211 and the first protective member 213. The first protective member 213 may be disposed on the first surface (or the first electrode portion 211b) of the vibration structure 211 via the first adhesive layer 212. For example, the first protective member 213 may be coupled or attached to the first surface (or the first electrode portion 211b) of the vibration structure 211 via a film lamination process using the first adhesive layer 212.

[0460] In the second vibration generator 230, a second adhesive layer 214 may be disposed between the vibration structure 211 and the second protective member 215. For example, the second adhesive layer 214 may be disposed between the second electrode portion 211c of the vibration structure 211 and the second protective member 215. The second protective member 215 may be disposed on the second surface (or the second electrode portion 211c) of the vibration structure 211 via the second adhesive layer 214. For example, the second protective member 215 may be coupled or connected to the second surface (or the second electrode portion 211c) of the vibration structure 211 via a film lamination process using the second adhesive layer 214.

[0461] In the second vibration generator 230, the first adhesive layer 212 and the second adhesive layer 214 can be connected or joined to each other between the first protective member 213 and the second protective member 215. For example, in the second vibration generator 230, the first adhesive layer 212 and the second adhesive layer 214 can be connected or joined to each other at the peripheral portion between the first protective member 213 and the second protective member 215. Therefore, in the second vibration generator 230, the vibration structure 211 can be surrounded by the first adhesive layer 212 and the second adhesive layer 214. For example, the first adhesive layer 212 and the second adhesive layer 214 can completely surround the entire vibration structure 211. For example, the first adhesive layer 212 and the second adhesive layer 214 can be referred to as cover members, but the embodiments of this disclosure are not limited thereto. When the first adhesive layer 212 and the second adhesive layer 214 are cover members, the first protective member 213 can be disposed on the first surface of the cover member, and the second protective member 215 can be disposed on the second surface of the cover member.

[0462] In each of the first vibration generator 210 and the second vibration generator 230, each of the first adhesive layer 212 and the second adhesive layer 214 may include an electrically insulating material. For example, the electrically insulating material may be adhesive and may include a material capable of compression and decompression. For example, one or more of the first adhesive layer 212 and the second adhesive layer 214 may include epoxy resin, acrylic resin, silicone resin, or polyurethane resin, but embodiments of this disclosure are not limited thereto.

[0463] According to embodiments of the present disclosure, one or more of the first vibration generator 210 and the second vibration generator 230 may further include a first power line PL1, a second power line PL2, and a pad portion 217.

[0464] The first power line PL1 of one or more of the first vibration generator 210 and the second vibration generator 230 can extend relatively long along the second direction Y. The first power line PL1 can be disposed at the first protective member 213 and can be electrically connected to the first electrode portion 211b. For example, the first power line PL1 can be disposed on the rear surface of the first protective member 213 facing the first electrode portion 211b and can be electrically connected to the first electrode portion 211b. For example, the first power line PL1 can be disposed on the rear surface of the first protective member 213 directly facing the first electrode portion 211b and can be directly electrically connected to the first electrode portion 211b. As an embodiment of the present disclosure, the first power line PL1 can be electrically connected to the first electrode portion 211b through an anisotropic conductive film. As another embodiment of the present disclosure, the first power line PL1 can be electrically connected to the first electrode portion 211b through a conductive material (or particles) included in the first adhesive layer 212. For example, the first power line PL1 can be electrically connected to each of the first electrode portion 211b of the first vibration generator 210 and the first electrode portion 211b (or the third electrode portion) of the second vibration generator 230.

[0465] For example, the first power line PL1 of one or more of the first vibration generator 210 and the second vibration generator 230 may include at least one or more first electric field lines protruding along a first direction X intersecting the second direction Y. At least one or more first electric field lines may extend elongatedly along the first direction X from at least one or more of one surface and the other surface of the first power line PL1 and may be electrically connected to the first electrode portion 211b. Therefore, at least one or more first electric field lines can enhance the uniformity of the vibration drive signal applied to the first electrode portion 211b.

[0466] A second power line PL2 of one or more of the first vibration generator 210 and the second vibration generator 230 can be disposed at the second protective member 215 and electrically connected to the second electrode portion 211c. For example, the second power line PL2 can be disposed on the rear surface of the second protective member 215 facing the second electrode portion 211c and electrically connected to the second electrode portion 211c. For example, the second power line PL2 can be disposed on the rear surface of the second protective member 215 directly facing the second electrode portion 211c and directly electrically connected to the second electrode portion 211c. As an embodiment of the present disclosure, the second power line PL2 can be electrically connected to the second electrode portion 211c through an anisotropic conductive film. As another embodiment of the present disclosure, the second power line PL2 can be electrically connected to the second electrode portion 211c through a conductive material (or particles) included in the second adhesive layer 214. For example, the second power line PL2 can be electrically connected to each of the second electrode portion 211c of the first vibration generator 210 and the second electrode portion 211c (or the fourth electrode portion) of the second vibration generator 230.

[0467] For example, the second power line PL2 of one or more of the first vibration generator 210 and the second vibration generator 230 may include at least one or more second electric power lines protruding along the first direction X. At least one or more second electric power lines may extend elongatedly along the first direction X from at least one or more of one surface and another of the second power line PL2 and may be electrically connected to the second electrode portion 211c. At least one or more second electric power lines may overlap or stack with at least one or more first electric power lines. Therefore, at least one or more second electric power lines may enhance the uniformity of the vibration drive signal applied to the second electrode portion 211c.

[0468] The pad portion 217 may be electrically connected to a portion (or one end or one side) of one or more of the first power line PL1 and the second power line PL2. For example, the pad portion 217 may be disposed at a first peripheral portion of one or more of the first protective member 213 and the second protective member 215. The pad portion 217 may be electrically connected at a first peripheral portion of one or more of the first power line PL1 and the second power line PL2 to a first portion (or one side or one end).

[0469] The pad portion 217 according to an embodiment of the present disclosure may include a first pad electrode electrically connected to a portion (or one end or one side) of a first power line PL1 and a second pad electrode electrically connected to a portion (or one end or one side) of a second power line PL2. For example, one or more of the first pad electrode and the second pad electrode may be exposed at a first peripheral portion of one or more of the first protective member 213 and the second protective member 215.

[0470] One or more of the first vibration generator 210 and the second vibration generator 230 according to embodiments of the present disclosure may also include a flexible cable 219.

[0471] The flexible cable 219 can be electrically connected to the pad portions 217 of one or more of the first vibration generator 210 and the second vibration generator 230. Therefore, the flexible cable 219 can provide a vibration drive signal (or sound signal) from the vibration drive circuit to the corresponding vibration structure 211. The flexible cable 219 according to embodiments of this disclosure may include a first terminal electrically connected to a first pad electrode of the pad portion 217 and a second terminal electrically connected to a second pad electrode of the pad portion 217. For example, the flexible cable 219 may be a flexible printed circuit cable or a flexible flat cable, but embodiments of this disclosure are not limited thereto.

[0472] A vibration drive circuit (or sound processing circuit) can generate an AC vibration drive signal, including a first vibration drive signal and a second vibration drive signal, based on a sound source. The first vibration drive signal can be one of a positive (+) vibration drive signal and a negative (-) vibration drive signal, and the second vibration drive signal can also be one of a positive (+) vibration drive signal and a negative (-) vibration drive signal. As an embodiment of this disclosure, the first vibration drive signal can be provided to the first electrode portion 211b of the vibration structure 211 via the first terminal of the flexible cable 219, the first pad electrode of the pad portion 217, and the first power line PL1. The second vibration drive signal can be provided to the second electrode portion 211c of the vibration structure 211 via the second terminal of the flexible cable 219, the second pad electrode of the pad portion 217, and the second power line PL2. As another embodiment of this disclosure, the first vibration drive signal can be provided to the second electrode portion 211c of the vibration structure 211 via the first terminal of the flexible cable 219, the second pad electrode of the pad portion 217, and the second power line PL2. The second vibration drive signal can be provided to the first electrode portion 211b of the vibration structure 211 through the second terminal of the flexible cable 219, the first pad electrode of the pad portion 217, and the first power line PL1.

[0473] According to embodiments of the present disclosure, the adhesive member 250 can be disposed between the first vibration generator 210 and the second vibration generator 230. For example, the adhesive member 250 can be disposed between the first protective member 213 of the first vibration generator 210 and the second protective member 215 of the second vibration generator 230. For example, the adhesive member 250 can include a material comprising an adhesive layer having good adhesion or bonding force with respect to the first vibration generator 210 and the second vibration generator 230. For example, the adhesive member 250 can include a foam pad, double-sided tape, double-sided foam pad, double-sided foam tape, or adhesive, but embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the adhesive member 250 can include epoxy-based, acrylic-based, silicone-based, or polyurethane-based materials, but embodiments of the present disclosure are not limited thereto.

[0474] exist Figure 3 and Figure 4As described in the related description, the vibration device 200 according to embodiments of the present disclosure is described as including a first vibration generator 210 and a second vibration generator 230, and an adhesive member 250 disposed between the first vibration generator 210 and the second vibration generator 230; however, embodiments of the present disclosure are not limited thereto. For example, the vibration device 200 according to embodiments of the present disclosure may include a plurality (e.g., three or more) of vibration generators 210 and 230 and an adhesive member 250 disposed between the plurality of vibration generators 210 and 230, based on sound pressure level characteristics and sound output characteristics generated by displacement of the display panel 100 based on the size and weight of the display panel 100. In this case, in order to maximize or increase the displacement or amplitude displacement of the vibration device 200, the plurality of vibration generators 210 and 230 may have the same size and may overlap or stack. For example, the first and second portions (or ends, or outer surfaces, or each corner) 210a and 230a of each vibration structure 211 (or vibration portion 221a) of one or more of the plurality of vibration generators 210 and 230 can substantially overlap or stack without interleaving. For example, the first and second portions (or ends, or outer surfaces, or each corner) 210a and 230a of each vibration structure 211 (or vibration portion 221a) of one or more of the plurality of vibration generators 210 and 230 can substantially overlap or stack without interleaving within the tolerance range of the manufacturing process. For example, the first and second portions (or ends, or outer surfaces, or each corner) 210a and 230a of each vibration structure 211 (or vibration portion 221a) of each of the plurality of vibration generators 210 and 230 can be aligned on a virtual extension line VL, or can be positioned at the virtual extension line VL. For example, the first and second portions (or ends, or outer surfaces, or each corner) 210a and 230a of each of the multiple vibration generators 210 and 230 can be precisely aligned on the virtual extension line VL, or can be precisely set at the virtual extension line VL.

[0475] Figure 5 A vibration drive circuit 500 according to an embodiment of the present disclosure is shown. Figure 5 It shows the connection to Figure 3 The vibration drive circuit of the vibration device shown.

[0476] Reference Figures 3 to 5 According to the embodiments of the present disclosure, the vibration drive circuit 500 can be electrically connected to the vibration device 200 and can generate a vibration drive signal based on a sound source to provide the vibration drive signal to the vibration device 200, thereby causing the vibration device 200 to vibrate or shift.

[0477] The vibration drive circuit 500 according to an embodiment of the present disclosure may include a plurality of amplifiers 501 and 502 respectively connected to a plurality of vibration generators 210 and 230 constituting the vibration device 200. For example, the vibration drive circuit 500 may include a first amplifier 501 and a second amplifier 502 respectively connected to a first vibration generator 210 and a second vibration generator 230 constituting the vibration device 200.

[0478] The first amplifier 501 can generate an AC vibration drive signal, including a first vibration drive signal and a second vibration drive signal, based on a sound source.

[0479] According to embodiments of the present disclosure, the first amplifier 501 may include a first output terminal T11 for outputting a first vibration drive signal and a second output terminal T12 for outputting a second vibration drive signal.

[0480] In the first amplifier 501, the first output terminal T11 can be electrically connected to one of the first electrode portion 211b and the second electrode portion 211c of the first vibration generator 210. The second output terminal T12 can be electrically connected to the other of the first electrode portion 211b and the second electrode portion 211c of the first vibration generator 210. For example, the first output terminal T11 of the first amplifier 501 can be electrically connected to the first electrode portion 211b of the first vibration generator 210, and the second output terminal T12 of the first amplifier 501 can be electrically connected to the second electrode portion 211c of the first vibration generator 210. For example, a first vibration drive signal output from the first output terminal T11 of the first amplifier 501 can be provided to the first electrode portion 211b through the flexible cable 219, the pad portion 217, and the first power line PL1 of the first vibration generator 210. A second vibration drive signal output from the second output terminal T12 of the first amplifier 501 can be provided to the second electrode portion 211c through the flexible cable 219, the pad portion 217, and the second power line PL2 of the first vibration generator 210.

[0481] The second amplifier 502 according to an embodiment of the present disclosure may include a first output terminal T21 for outputting a first vibration drive signal and a second output terminal T22 for outputting a second vibration drive signal.

[0482] The first output terminal T21 and the second output terminal T22 of the second amplifier 502 can be connected to the first electrode portion 211b and the second electrode portion 211c of the second vibration generator 230, respectively, such that the second vibration generator 230 is shifted in the same direction as the shifting direction of the first vibration generator 210. In the second amplifier 502, the first output terminal T21 can be electrically connected to one of the first electrode portion 211b and the second electrode portion 211c of the second vibration generator 230, and the second output terminal T22 can be electrically connected to the other of the first electrode portion 211b and the second electrode portion 211c of the second vibration generator 230. For example, the first output terminal T21 of the second amplifier 502 can be electrically connected to the second electrode portion 211c of the second vibration generator 230, and the second output terminal T22 of the second amplifier 502 can be electrically connected to the first electrode portion 211b of the second vibration generator 230. For example, the first vibration drive signal output from the first output terminal T21 of the second amplifier 502 can be provided to the second electrode portion 211c via the flexible cable 219, the pad portion 217, and the second power line PL2 of the second vibration generator 230. The second vibration drive signal output from the second output terminal T22 of the second amplifier 502 can be provided to the first electrode portion 211b via the flexible cable 219, the pad portion 217, and the first power line PL1 of the second vibration generator 230.

[0483] exist Figure 5 In the description and related information, the vibration drive circuit 500 according to embodiments of the present disclosure has been described as including a first amplifier 501 and a second amplifier 502; however, embodiments of the present disclosure are not limited thereto. For example, the vibration drive circuit 500 according to embodiments of the present disclosure may include a plurality (e.g., three or more) of amplifiers 501 and 502 corresponding to the number of vibration generators 210 and 230 included in the vibration device 200. Each of the three or more amplifiers 501 and 502 may provide a vibration drive signal for displacing each of the three or more vibration generators 210 and 230 in the same direction. According to embodiments of the present disclosure, in order to displace each of the three or more vibration generators 210 and 230 in the same direction, the three or more vibration generators 210 and 230 may include a first group and a second group, and the plurality of amplifiers 501 and 502 may include a first amplifier group and a second amplifier group.

[0484] The vibration generators 210 in the first group (e.g., odd-numbered vibration generators) can be shifted by a vibration drive signal applied from the amplifier 501 (e.g., odd-numbered amplifier) ​​in the first amplifier group, and the vibration generators 230 in the second group (e.g., even-numbered vibration generators) can be shifted by a vibration drive signal applied from the amplifier 502 (e.g., even-numbered amplifier) ​​in the second amplifier group, thereby allowing three or more vibration generators 210 and 230 to be shifted in the same direction. For example, in the amplifier 501 of the first amplifier group, the first output terminal T11 can be electrically connected to the first electrode portion 211b of the vibration generator 210 in the first group, and the second output terminal T12 can be electrically connected to the second electrode portion 211c of the vibration generator 210 in the first group. Furthermore, in the amplifier 502 of the second amplifier group, the first output terminal T21 can be electrically connected to the second electrode portion 211c of the vibration generator 230 in the second group, and the second output terminal T22 can be electrically connected to the first electrode portion 211b of the vibration generator 210 in the second group.

[0485] Figure 6A The displacement of a vibration generator according to an embodiment of the present disclosure is shown. Figure 6B The displacement of a vibration device according to an embodiment of the present disclosure is shown.

[0486] Reference Figure 6A According to embodiments of the present disclosure, multiple vibration generators 210 and 230 can be displaced (or vibrate) relative to the thickness direction Z of the display panel 100 based on a first amplitude DW1 according to a vibration drive signal. For example, the vibration portion 211a of each of the vibration generators 210 and 230 may include a first region (or a first polarization region) adjacent to a first electrode portion 211b and a second region (or a second polarization region) adjacent to a second electrode portion 211c. The vibration portion 211a can be displaced based on the first amplitude DW1, on the basis of the expansion of the first region based on a positive (+) vibration drive signal and the contraction of the second region based on a negative (-) vibration drive signal. Therefore, the display panel 100 can be displaced (or vibrated) based on a second amplitude DW2 corresponding to the first amplitude DW1, on the basis of the displacement of the vibration generators 210 and 230 having the first amplitude DW1.

[0487] Reference Figure 6BAccording to embodiments of the present disclosure, the first vibration generator 210 and the second vibration generator 230 can be displaced (or vibrated) relative to the thickness direction Z of the display panel 100 based on a third amplitude DW3 according to a vibration drive signal. The first vibration generator 210 and the second vibration generator 230 can also be displaced (or vibrated) in the same direction based on a stacked structure where the first vibration generator 210 and the second vibration generator 230 overlap. Therefore, a vibration device including the first vibration generator 210 and the second vibration generator 230 with a stacked structure can be displaced (or vibrated) based on a relatively larger amplitude than a vibration device including a vibration generator with a single structure. For example, the vibration portion 211a of each of the vibration generators 210 and 230 may include a first region (or a first polarization region) adjacent to the first electrode portion 211b and a second region (or a second polarization region) adjacent to the second electrode portion 211c. The vibration portion 211a of the first vibration generator 210 can be shifted based on a third amplitude DW3, on the expansion of a first region based on a positive (+) vibration drive signal and the contraction of a second region based on a negative (-) vibration drive signal. Simultaneously, the vibration portion 211a of the second vibration generator 230 can be shifted based on a fourth amplitude DW4, on the contraction of the first region based on a negative (-) vibration drive signal and the expansion of the second region based on a positive (+) vibration drive signal. Therefore, the display panel 100 can be shifted (or vibrated) based on a fifth amplitude DW5 corresponding to the third amplitude DW3 of the first vibration generator 210 and the fourth amplitude DW4 of the second vibration generator 230, thereby vibrating based on an amplitude relatively larger than that of a vibration device including a vibration generator with a single structure. For example, the vibration device 200 according to an embodiment of this disclosure can have a drive direction matching the drive direction of a vibration device including a vibration generator with a single structure, thus maximizing or enhancing the drive force of the vibration device 200. Therefore, the displacement (or bending force or flexural force) or amplitude displacement of the display panel 100 can be increased (or maximized) by the displacement of the vibration device 200, and thus the sound pressure level characteristics and / or the sound characteristics of the mid-to-low pitch vocal cords are generated based on the vibration of the display panel 100.

[0488] Figure 7 A vibration device according to another embodiment of the present disclosure is shown. Figure 8 It is along Figure 7 The cross-sectional view taken by line III-III' shown. Figure 8 It shows how to modify Figure 3 The embodiment shown is implemented using a second vibration generator for the vibration device. Therefore, in the following description, descriptions of components other than the second vibration generator and related components will be omitted or will be given only briefly.

[0489] Reference Figure 7 and Figure 8 In another embodiment of the vibration device 200 according to the present disclosure, the second vibration generator 230 may include a vibration structure 211, a first protective member 213, and a second protective member 215. The second vibration generator 230 may be attached to the first vibration generator 210 as a vertically reversed type.

[0490] The second vibration generator 230 can be disposed on the rear surface of the first vibration generator 210 by means of an adhesive member 250 (or a first connecting member) in a state in which it is vertically reversed relative to the rear surface of the display panel 100 to have a stacking structure opposite to that of the first vibration generator 210.

[0491] According to embodiments of this disclosure, the first protective member 213 of the first vibration generator 210 can be connected or coupled to the rear surface of the display panel 100 via a connecting member 150 (or a second connecting member). In this case, the second protective member 215 of the second vibration generator 230 can be connected or coupled to the second protective member 215 of the first vibration generator 210 via an adhesive member 250. For example, in order to make the first vibration generator 210 and the second vibration generator 230 move simultaneously in the same direction, the first electrode portion 211b of the first vibration generator 210 can be configured to be closer to the display panel 100 than the second electrode portion 211c, and the second electrode portion 211c of the second vibration generator 230 can be configured to be closer to the display panel 100 than the first electrode portion 211b.

[0492] According to another embodiment of this disclosure, the second protective member 215 of the first vibration generator 210 can be connected or coupled to the rear surface of the display panel 100 via the connecting member 150. In this case, the first protective member 213 of the second vibration generator 230 can be connected or coupled to the first protective member 213 of the first vibration generator 210 via the adhesive member 250. For example, in order to make the first vibration generator 210 and the second vibration generator 230 move simultaneously in the same direction, the second electrode portion 211c of the first vibration generator 210 can be configured to be closer to the display panel 100 than the first electrode portion 211b, and the first electrode portion 211b of the second vibration generator 230 can be configured to be closer to the display panel 100 than the second electrode portion 211c.

[0493] Therefore, in another embodiment of the vibration device 200 according to the present disclosure, the second vibration generator 230 can be disposed at the first vibration generator 210 in a vertically reversed state. Thus, when the electrical connection to the vibration drive circuit is performed, even without changing the electrical connection structure between the second vibration generator 230 and the vibration drive circuit, each of the first vibration generator 210 and the second vibration generator 230 can be electrically connected to the vibration drive circuit based on the same electrical connection type.

[0494] Figure 9 A vibration drive circuit 500 according to another embodiment of the present disclosure is shown. Figure 9 It shows the connection to Figure 7 The vibration drive circuit of the vibration device shown.

[0495] Reference Figures 7 to 9 According to another embodiment of the present disclosure, the vibration drive circuit 500 can be electrically connected to the vibration device 200 and can generate a vibration drive signal based on a sound source to provide the vibration drive signal to the vibration device 200, thereby causing the vibration device 200 to vibrate or shift.

[0496] The vibration drive circuit 500 according to an embodiment of the present disclosure may include a plurality of amplifiers 501 and 502 respectively connected to a plurality of vibration generators 210 and 230 constituting the vibration device 200. For example, the vibration drive circuit 500 may include a first amplifier 501 and a second amplifier 502 respectively connected to a first vibration generator 210 and a second vibration generator 230 constituting the vibration device 200.

[0497] The first amplifier 501 can generate an AC vibration drive signal, including a first vibration drive signal and a second vibration drive signal, based on a sound source. According to embodiments of this disclosure, the first amplifier 501 may include a first output terminal T11 for outputting the first vibration drive signal and a second output terminal T12 for outputting the second vibration drive signal. The first amplifier 501 can be compared with the above-mentioned... Figure 5 The first amplifier 501 described is essentially the same, therefore, its repeated description is omitted.

[0498] The second amplifier 502 according to an embodiment of the present disclosure may include a first output terminal T21 for outputting a first vibration drive signal and a second output terminal T22 for outputting a second vibration drive signal.

[0499] The first output terminal T21 and the second output terminal T22 of the second amplifier 502 can be connected to the first electrode portion 211b and the second electrode portion 211c of the second vibration generator 230, respectively, so that the second vibration generator 230 is shifted in the same direction as the shifting direction of the first vibration generator 210. For example, the first output terminal T21 of the second amplifier 502 can be electrically connected to the first electrode portion 211b of the second vibration generator 230, and the second output terminal T22 of the second amplifier 502 can be electrically connected to the second electrode portion 211c of the second vibration generator 230. For example, the first vibration drive signal output from the first output terminal T21 of the second amplifier 502 can be provided to the first electrode portion 211b through the flexible cable 219, the pad portion 217, and the first power line PL1 of the second vibration generator 230. The second vibration drive signal output from the second output terminal T22 of the second amplifier 502 can be provided to the second electrode portion 211c through the flexible cable 219, the pad portion 217, and the second power line PL2 of the second vibration generator 230.

[0500] In another embodiment of the vibration drive circuit 500 according to this disclosure, the second vibration generator 230 can be disposed at or attached to the first vibration generator 210 as a vertical inversion type. Therefore, the second amplifier 502 can be electrically connected to the second vibration generator 230 without changing the positions of the first output terminal T21 and the second output terminal T22 of the second amplifier 502. For example, Figures 2 to 5 The second vibration generator 230 shown can be located at or attached to the first vibration generator 210 without being vertically reversed. Therefore, in order to shift three or more vibration generators 210 and 230 in the same direction, the second amplifier 502 can be electrically connected to the second vibration generator 230 even when the positions of the first output terminal T21 and the second output terminal T22 of the second amplifier 502 have changed. For example... Figures 7 to 9The second vibration generator 230 shown can be disposed at or attached to the first vibration generator 210 in a vertically reversed state. Therefore, in order to shift three or more vibration generators 210 and 230 in the same direction, the positions of the first output terminal T21 and the second output terminal T22 of the second amplifier 502 do not need to be changed between them. Therefore, the electrical connection type between the first output terminal T21 and the second output terminal T22 of the second amplifier 502 and the second vibration generator 230 can be the same as the electrical connection type between the first output terminal T11 and the second output terminal T12 of the first amplifier 501 and the first vibration generator 210. Thus, the ease of assembly between each of the first vibration generators 210 and 230 and the first amplifier 501 and the second amplifier 502 can be increased or enhanced. For example, the first output terminal T11 of the first amplifier 501 can be electrically connected to the first electrode portion 211b of the first vibration generator 210, and the second output terminal T12 of the first amplifier 501 can be electrically connected to the second electrode portion 211c of the first vibration generator 210. Similarly, the first output terminal T21 of the second amplifier 502 can be electrically connected to the first electrode portion 211b of the second vibration generator 230, and the second output terminal T22 of the second amplifier 502 can be electrically connected to the second electrode portion 211c of the second vibration generator 230.

[0501] exist Figures 7 to 9 In the description and related information, a vibration device 200 according to another embodiment of this disclosure has been described as including a first vibration generator 210 and a second vibration generator 230; however, embodiments of this disclosure are not limited thereto. For example, a vibration device 200 according to another embodiment of this disclosure may include a plurality of (e.g., three or more) vibration generators 210 and 230. To cause each of the three or more vibration generators 210 and 230 to be displaced in the same direction, the three or more vibration generators 210 and 230 may include a first group and a second group.

[0502] As an embodiment of this disclosure, the first group of vibration generators 210 (e.g., odd-numbered vibration generators) can be shifted in a non-vertically reversed state, and the second group of vibration generators 230 (e.g., even-numbered vibration generators) can be shifted in a vertically reversed state. For example, the first electrode portion 211b of the first group of vibration generators 210 can be positioned closer to the display panel 100 than the second electrode portion 211c, and the second electrode portion 211c of the second group of vibration generators 230 can be positioned closer to the display panel 100 than the first electrode portion 211b.

[0503] In another embodiment of this disclosure, the first group of vibration generators 210 (e.g., odd-numbered vibration generators) can be displaced in a vertically reversed state, and the second group of vibration generators 230 (e.g., even-numbered vibration generators) can be displaced in a non-vertically reversed state. For example, the second electrode portion 211c of the first group of vibration generators 210 can be positioned closer to the display panel 100 than the first electrode portion 211b, and the first electrode portion 211b of the second group of vibration generators 230 can be positioned closer to the display panel 100 than the second electrode portion 211c.

[0504] According to another embodiment of this disclosure, the vibration drive circuit 500 may include a plurality (e.g., three or more) of amplifiers 501 and 502 corresponding to the number of vibration generators 210 and 230 included in the vibration device 200. Each of the three or more amplifiers 501 and 502 may provide a vibration drive signal for shifting each of the three or more vibration generators 210 and 230 in the same direction. For example, a first vibration drive signal from the first output terminals T11 and T21 of the respective amplifiers 501 and 502 may be provided to the first electrode portion 211b of each of the three or more vibration generators 210 and 230. A second vibration drive signal from the second output terminals T12 and T22 of the respective amplifiers 501 and 502 may be provided to the second electrode portion 211c of each of the three or more vibration generators 210 and 230.

[0505] Figure 10 A vibration device according to another embodiment of the present disclosure is shown. Figure 11 It shows Figure 10 The vibrating part is shown. Figures 12A to 12C It is along Figure 10 The cross-sectional view shown is taken from line IV-IV' and illustrates the modification... Figures 2 to 5 The vibration equipment shown or Figures 7 to 9 The vibration structure in the vibration device shown is an implementation method. Therefore, in the following description, repeated descriptions of elements other than the vibration structure and related elements will be omitted or will be briefly given.

[0506] Reference Figures 10 to 12C In the vibration device 200 according to an embodiment of the present disclosure, the vibration structure 211 of each of the vibration generators 210 and 230 may include a vibration portion 211a, a first electrode portion 211b, and a second electrode portion 211c.

[0507] The vibrating portion 211a may include a piezoelectric material, a composite piezoelectric material, or an electroactive material, and the piezoelectric material, composite piezoelectric material, and electroactive material may have a piezoelectric effect. The vibrating portion 211a may include inorganic and organic materials. For example, the vibrating portion 211a may include multiple inorganic material portions configured as piezoelectric materials and at least one organic material portion configured as a flexible material. For example, the vibrating portion 211a may be referred to as a piezoelectric vibrating portion, a piezoelectric vibrating layer, a piezoelectric displacement portion, a piezoelectric displacement layer, a sound wave generating portion, a sound wave generating layer, a piezoelectric composite material layer, a piezoelectric composite material, or a piezoelectric ceramic composite material, but embodiments of this disclosure are not limited thereto. The vibrating portion 211a may be formed of a transparent, translucent, or opaque piezoelectric material, and the vibrating portion 211a may be transparent, translucent, or opaque. The vibration structure 211, including each of the vibration part 211a or vibration generators 210 and 230, may be referred to as a diaphragm, displacement generator, sound generator, flexible vibration generator, flexible actuator, flexible loudspeaker, flexible piezoelectric loudspeaker, thin film actuator, thin film piezoelectric composite actuator, thin film loudspeaker, thin film piezoelectric loudspeaker, thin film piezoelectric composite loudspeaker, etc., but the embodiments of this disclosure are not limited thereto.

[0508] The vibration portion 211a according to embodiments of the present disclosure may include a plurality of first portions 211a1 and a plurality of second portions 211a2. For example, the plurality of first portions 211a1 and the plurality of second portions 211a2 may be arranged alternately and repeatedly along a first direction X (or a second direction Y). For example, the first direction X may be the width direction of the vibration portion 211a, and the second direction Y may be the length direction of the vibration portion 211a, but embodiments of the present disclosure are not limited thereto. For example, the first direction X may be the length direction of the vibration portion 211a, and the second direction Y may be the width direction of the vibration portion 211a.

[0509] Each of the plurality of first portions 211a1 can be configured as an inorganic material portion. The inorganic material portion may include the piezoelectric material described above. For example, each of the plurality of first portions 211a1 may include a piezoelectric material, as described above. Figure 3 and Figure 4 The vibration part 211a described is basically the same, so its repeated description can be omitted.

[0510] Each of the plurality of first portions 211a1 according to embodiments of the present disclosure may be disposed between a plurality of second portions 211a2. Each of the plurality of second portions 211a2 may be disposed (or arranged) parallel to each other, with the first portions 211a1 located therebetween. For example, the plurality of first portions 211a1 may have a first width W1 parallel to a first direction X (or a second direction Y) and a length parallel to the second direction Y (or the first direction X). Each of the plurality of second portions 211a2 may have a second width W2 parallel to the first direction X (or the second direction Y) and a length parallel to the second direction Y (or the first direction X). The first width W1 may be the same as or different from the second width W2. For example, the first width W1 may be greater than the second width W2. Each of the plurality of first portions 211a1 may have the same size, for example, the same width, area, or volume. For example, each of the plurality of first portions 211a1 may have the same size (e.g., the same width, area, or volume) within the range (or tolerance) of process errors that occur in the manufacturing process. For example, the first portion 211a1 and the second portion 211a2 may comprise linear or strip-shaped components of the same or different sizes. Therefore, the vibrating portion 211a may comprise a 2-2 composite structure and thus may have a resonant frequency of 20 kHz or less, but embodiments of this disclosure are not limited thereto. For example, the resonant frequency of the vibrating portion 211a may vary based on at least one or more of its shape, length, and thickness. For example, the first portion 211a1 may be referred to as a piezoelectric portion, piezoelectric element, piezoelectric layer, vibrating layer, displacement element, displacement layer, inorganic portion, or inorganic material portion, but embodiments of this disclosure are not limited thereto.

[0511] In the vibrating portion 211a, a plurality of first portions 211a1 and a plurality of second portions 211a2 may be arranged in parallel on the same plane (or the same layer). The plurality of first portions 211a1 and the plurality of second portions 211a2 may be arranged in parallel on the same plane (or the same layer) and may be connected or joined to each other. Each of the plurality of second portions 211a2 may fill the gap between two adjacent first portions of the plurality of first portions 211a1. Each of the plurality of second portions 211a2 may be connected to or attached to a first portion 211a1 adjacent to it. For example, each of the plurality of second portions 211a2 may be configured to fill the gap between two adjacent first portions 211a1 and may be connected or attached to an adjacent second portion 211a2. Therefore, the vibrating portion 211a may extend to a desired size or length based on the lateral connection (or connection) between the first portions 211a1 and the second portions 211a2.

[0512] In the vibrating part 211a, the width (or size) W2 of each of the plurality of second parts 211a2 may gradually decrease in the direction from the center part of the vibrating part 211a to the two peripheral parts (or ends).

[0513] According to embodiments of this disclosure, the second portion 211a2 with the largest width W2 among the plurality of second portions 211a2 can be located at the portion where maximum stress can concentrate when the vibrating portion 211a vibrates in the vertical (or up-down) direction Z (or the thickness direction). The second portion 211a2 with the smallest width W2 among the plurality of second portions 211a2 can be provided at the portion where relatively less stress may occur when the vibrating portion 211a vibrates in the vertical direction Z. For example, the second portion 211a2 with the largest width W2 among the plurality of second portions 211a2 can be provided at the central portion of the vibrating portion 211a, and the second portion 211a2 with the smallest width W2 among the plurality of second portions 211a2 can be provided at one or more of the two peripheral portions of the vibrating portion 211a. Therefore, when the vibrating portion 211a vibrates in the vertical direction Z, interference of sound waves or overlap of resonant frequencies occurring in the portion where maximum stress is concentrated can be reduced or minimized. Therefore, the dip phenomenon in the sound pressure level of the low-pitched vocal cords can be reduced, thereby improving the flatness of the sound characteristics in the low-pitched vocal cords. For example, the flatness of the sound characteristics can be the level of deviation between the highest and lowest sound pressure levels.

[0514] In the vibrating portion 211a, each of the plurality of first portions 211a1 can have a different size (or width). For example, the size (or width) of each of the plurality of first portions 211a1 can gradually decrease or increase in the direction from the center portion of the vibrating portion 211a to the two peripheral portions (or ends). In the vibrating portion 211a, based on the various inherent vibration frequencies of the vibrations of each of the plurality of first portions 211a1 with different sizes, the sound pressure level characteristics of the sound can be enhanced and the sound reproduction band can be increased.

[0515] Each of the plurality of second portions 211a2 can be disposed between the plurality of first portions 211a1. Therefore, in the vibrating portion 211a, the vibrational energy of the link in the unit lattice of the first portion 211a1 can be increased in the corresponding second portion 211a2. Thus, vibrational characteristics can be enhanced, and piezoelectric properties and flexibility can be ensured. For example, the second portion 211a2 may comprise one or more of epoxy-based polymers, acrylic-based polymers, and silicone-based polymers, but embodiments of this disclosure are not limited thereto.

[0516] According to embodiments of the present disclosure, multiple second portions 211a2 can be configured as organic material portions. For example, the organic material portions can be disposed between the inorganic material portions and can absorb impacts applied to the inorganic material portions (or the first portion), can release stress concentrated on the inorganic material portions to improve the overall durability of the vibrating portion 211a, and can provide flexibility to the vibrating portion 211a.

[0517] According to embodiments of the present disclosure, a plurality of second portions 211a2 may have a lower modulus and viscoelasticity than the first portion 211a1, and thus the second portions 211a2 may enhance the reliability of the first portion 211a1, which is susceptible to impact due to its brittle nature.

[0518] For example, when the vibration device 200 used to vibrate the display panel 100 has shock resistance and high stiffness, the vibration device 200 may have high vibration characteristics or maximum vibration characteristics. To make the vibration device 200 have shock resistance and high stiffness, each of the plurality of second parts 211a2 may include a material having a relatively high damping factor (tanδ) and relatively high stiffness. For example, each of the plurality of second parts 211a2 may include a material having a damping factor (tanδ) of about 0.1 [GPa] to about 1 [GPa] and a relatively high stiffness of about 0 [GPa] to about 10 [GPa]. Furthermore, the damping factor (tanδ) and stiffness characteristics may be described based on the correlation between the loss coefficient and the modulus. For example, the second part 211a2 may include a material having a loss coefficient of about 0.01 to about 1.0 and a modulus of about 0.1 [GPa] to about 10 [GPa].

[0519] The organic material portion included in the second part 211a2 may include one or more of organic materials, organic polymers, organic piezoelectric materials, and organic non-piezoelectric materials that have flexible properties compared to the inorganic material portion of the first part 211a1. For example, the second part 211a2 may be referred to as an elastic portion, a resilient portion, a connecting portion, an organic portion, an organic material portion, an adhesive portion, a tensile portion, a bending portion, a damping portion, or a flexible portion, but embodiments of this disclosure are not limited thereto.

[0520] The organic material portion of the organic piezoelectric material can absorb shocks applied to the inorganic material portion (or the first portion 211a1). Therefore, the organic material portion can enhance the overall durability of the vibration device 200 and can provide piezoelectric properties corresponding to a specific level or higher. For example, the organic piezoelectric material according to embodiments of this disclosure can be an organic material. The organic piezoelectric material according to embodiments of this disclosure can be an organic material with electroactive properties. For example, the organic piezoelectric material can include at least one of polyvinylidene fluoride (PVDF), β-polyvinylidene fluoride (β-PVDF), and polyvinylidene fluoride (PVDF-TrFE), but embodiments of this disclosure are not limited thereto.

[0521] The organic material portion, including the organic non-piezoelectric material, may include a curable resin composition and an adhesive comprising the curable resin composition. Therefore, the organic material portion can absorb impacts applied to the inorganic material portion (or the first portion), thereby improving the overall durability of the vibration device 200. The organic non-piezoelectric material according to embodiments of this disclosure may include at least one of epoxy-based polymers, propylene-based polymers, and silicone-based polymers, but embodiments of this disclosure are not limited thereto.

[0522] For example, to achieve high stiffness characteristics in the vibration device 200, the organic material portion, including the organic non-piezoelectric material, may include an adhesion promoter or adhesion enhancer for improving the adhesion between the epoxy resin and the inorganic material portion. For example, the adhesion promoter may be a phosphate, but embodiments of this disclosure are not limited thereto. The organic material portion can be cured by at least one of a thermosetting process and a photocuring process. In the process of curing the organic material portion, a solvent-free epoxy resin can be used to avoid or prevent a decrease in the thickness uniformity of the vibration device 200 due to shrinkage of the organic material portion caused by solvent evaporation.

[0523] The organic material portion, including the organic non-piezoelectric material, may also include reinforcing agents, such as those for damping properties and high stiffness of the vibrating device 200. For example, the reinforcing agent may be a core-shell type methyl methacrylate-butadiene-styrene (MBS), and its content may be from about 5 wt% to about 40 wt%. The reinforcing agent may be an elastomer with a core unit type and may have high bonding strength with epoxy resins (e.g., acrylic polymers). Therefore, the reinforcing agent can enhance the impact resistance or damping properties of the vibrating device 200.

[0524] Multiple first portions 211a1 and second portions 211a2 can be disposed (or connected) on the same plane, thus the vibrating portion 211a according to embodiments of the present disclosure can have a single thin film type. For example, the vibrating portion 211a can have a structure in which multiple first portions 211a1 are connected to one side of the vibrating portion 211a. For example, multiple first portions 211a1 can have a structure connected to the entire vibrating portion 211a. For example, the vibrating portion 211a can vibrate in the vertical (or up-down) direction (or thickness direction) by means of first portions 211a1 having vibration characteristics relative to the width direction of the display panel 100, and can be bent into a curved shape by means of second portions 211a2 having flexibility. Furthermore, in the vibrating portion 211a according to embodiments of the present disclosure, the size of the first portions 211a1 and the size of the second portions 211a2 can be adjusted based on the required piezoelectric characteristics and flexibility of the vibrating portion 211a. In one embodiment of this disclosure, when the vibrating portion 211a requires piezoelectric properties rather than flexibility, the size of the first portion 211a1 can be adjusted to be larger than that of the second portion 211a2. In another embodiment of this disclosure, when the vibrating portion 211a requires flexibility rather than piezoelectric properties, the size of the second portion 211a2 can be adjusted to be larger than that of the first portion 211a1. Therefore, the size of the vibrating portion 211a can be adjusted based on the required characteristics, thus making it easy to design the vibrating portion 211a.

[0525] To maximize or increase the displacement or amplitude displacement of the vibration device 200, the vibration structure 211 of the first vibration generator 210 and the vibration structure 211 of the second vibration generator 230 can have the same size and can overlap each other. For example, the first part (or end, end, outer surface, or each corner) 210a of the vibration structure 211 (or vibration part 211a) of the first vibration generator 210 can be substantially aligned or overlapped with the second part (or end, end, outer surface, or each corner) 230a of each vibration structure 211 (or vibration part 211a) of the second vibration generator 230, without interleaving. For example, the first portion (or end, end, outer surface, or each corner) 210a of the vibration structure 211 (or vibration part 211a) of the first vibration generator 210 can be substantially aligned or overlapped with the second portion (or end, end, outer surface, or each corner) 230a of each vibration structure 211 (or vibration part 211a) of the second vibration generator 230, within the tolerance range of the manufacturing process, without interleaving. For example, the first portion (or end, end, outer surface, or each corner) 210a of each vibration structure 211 (or vibration part 211a) of the first vibration generator 210 can be aligned on the first virtual extension line VL1, or can be located at the first virtual extension line VL1. The second portion (or end, end, outer surface, or each corner) 230a of each vibration structure 211 (or vibration part 211a) of the second vibration generator 230 can be precisely aligned with the first virtual extension line VL1, or can be precisely positioned at the first virtual extension line VL1.

[0526] According to embodiments of the present disclosure, the plurality of second portions 211a2 of the first vibration generator 210 and the plurality of second portions 211a2 of the second vibration generator 230 may have the same size as each other and may substantially overlap or stack without interleaving. For example, the plurality of second portions 211a2 of the first vibration generator 210 and the plurality of second portions 211a2 of the second vibration generator 230 may have the same size as each other and may substantially overlap or stack without interleaving within the tolerance range of the manufacturing process. According to embodiments of the present disclosure, each of the plurality of second portions 211a2 of the first vibration generator 210 may substantially overlap or stack with each of the plurality of second portions 211a2 of the second vibration generator 230. For example, each of the plurality of second portions 211a2 of the first vibration generator 210 and each of the plurality of second portions 211a2 of the second vibration generator 230 may be aligned on or disposed at the second virtual extension line VL2. For example, each of the plurality of second portions 211a2 of the first vibration generator 210 and each of the plurality of second portions 211a2 of the second vibration generator 230 can be aligned or positioned on the second virtual extension line VL2 without intersecting. For example, each of the plurality of second portions 211a2 of the first vibration generator 210 and each of the plurality of second portions 211a2 of the second vibration generator 230 can be precisely aligned or precisely positioned on the second virtual extension line VL2 within the tolerance range of the manufacturing process. Therefore, in the vibration device 200 according to an embodiment of the present disclosure, the vibration portions 211a of the first vibration generator 210 and the vibration portions 211a of the second vibration generator 230 can be shifted in the same direction, thus maximizing or increasing the displacement or amplitude shift of the vibration device 200, thereby increasing (or maximizing) the displacement (or bending force or flexural force) or amplitude shift of the display panel 100.

[0527] The first electrode portion 211b may be disposed on the first surface (or top surface) of the vibrating portion 211a. For example, the first electrode portion 211b may be commonly disposed on or connected to the first surface of each of the plurality of first portions 211a1 and the first surface of each of the plurality of second portions 211a2. The first electrode portion 211b may be electrically connected to the first surface of each of the plurality of first portions 211a1. For example, the first electrode portion 211b may be disposed on the entire first surface of the vibrating portion 211a. The first electrode portion 211b may have a single electrode type. For example, the first electrode portion 211b may have a shape substantially the same as that of the vibrating portion 211a, but embodiments of the present disclosure are not limited thereto. The first electrode portion 211b according to embodiments of the present disclosure may be formed of a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material, but embodiments of the present disclosure are not limited thereto.

[0528] The second electrode portion 211c may be disposed on a second surface (or rear surface) opposite to or different from the first surface of the vibrating portion 211a. The second electrode portion 211c may be commonly disposed on or connected to the second surface of each of the plurality of first portions 211a1 and the second surface of each of the plurality of second portions 211a2. The second electrode portion 211c may be electrically connected to the second surface of each of the plurality of first portions 211a1. For example, the second electrode portion 211c may be disposed over the entire second surface of the vibrating portion 211a. The second electrode portion 211c may have a single electrode type. For example, the second electrode portion 211c may have a substantially the same shape as the vibrating portion 211a, but embodiments of this disclosure are not limited thereto. The second electrode portion 211c according to embodiments of this disclosure may be formed of a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material, but embodiments of this disclosure are not limited thereto.

[0529] The first electrode portion 211b may be covered by the first protective member 213. The second electrode portion 211c may be covered by the second protective member 215.

[0530] The vibration portion 211a of each of the first vibration generator 210 and the second vibration generator 230 can be polarized (or polarized) by applying a specific voltage to the first electrode portion 211b and the second electrode portion 211c in a specific temperature atmosphere or a temperature atmosphere changing from high temperature to room temperature, but the embodiments of this disclosure are not limited thereto. For example, the vibration portion 211a of each of the first vibration generator 210 and the second vibration generator 230 can vibrate by alternately and repeatedly contracting and expanding based on the inverse piezoelectric effect according to a vibration drive signal applied from the outside to the first electrode portion 211b and the second electrode portion 211c. For example, the vibration portion 211a of each of the first vibration generator 210 and the second vibration generator 230 can vibrate based on vertical (or thickness direction Z) vibration d33 and horizontal (or planar direction) vibration d31 according to the vibration drive signal applied to the first electrode portion 211b and the second electrode portion 211c. The vibrating part 211a can increase the displacement of the vibrating device 200 by contracting and extending in the horizontal direction, thereby further improving the vibration of the vibrating device 200 or the display panel.

[0531] exist Figures 10 to 12CIn the description and related information, a vibration device 200 according to another embodiment of the present disclosure has been described as including a first vibration generator 210 and a second vibration generator 230, but the embodiments of the present disclosure are not limited thereto. For example, a vibration device 200 according to another embodiment of the present disclosure may include a plurality of (e.g., three or more) vibration generators 210 and 230. In this case, in order to maximize or increase the displacement or amplitude displacement of the vibration device 200, the plurality of vibration generators 210 and 230 may have the same size and may overlap or stack. According to embodiments of the present disclosure, the first portion 211a1 of the vibration generator 210 disposed in the upper (or top) layer of three or more vibration generators 210 and 230 and the first portion 211a1 of the vibration generator 230 disposed in the lower (or bottom) layer of three or more vibration generators 210 and 230 may substantially overlap or stack without interleaving. For example, the first portions 211a1 of the upper vibration generator 210 and the first portions 211a1 of the lower vibration generator 230 in three or more vibration generators 210 and 230 can substantially overlap or stack without interleaving within the tolerance range of the manufacturing process. For example, the first portions 211a1 of the upper vibration generator 210 and the first portions 211a1 of the lower vibration generator 230 in three or more vibration generators 210 and 230 can be aligned or positioned at the virtual extension line VL. For example, the first portions 211a1 of the upper vibration generator 210 and the first portions 211a1 of the lower vibration generator 230 in three or more vibration generators 210 and 230 can be precisely aligned or precisely positioned at the virtual extension line VL. For example, the first portion 211a1 of a vibration generator 210 disposed closer to the first surface of the display panel 100 overlaps with the first portion 211a1 of another vibration generator 230 disposed less close to the front surface of the display panel 100. Furthermore, the second portions 211a2 of the upper layer of three or more vibration generators 210 and 230, and the second portions 211a2 of the lower layer of three or more vibration generators 230, can substantially overlap or stack without interleaving. For example, the second portions 211a2 of the upper layer of three or more vibration generators 210 and 230, and the second portions 211a2 of the lower layer of three or more vibration generators 230, can substantially overlap or stack without interleaving within the tolerance range of the manufacturing process.For example, the second portion 211a2 of the upper vibration generator 210 and the second portion 211a2 of the lower vibration generator 230 among three or more vibration generators 210 and 230 can be aligned or positioned at the virtual extension line VL. For example, the second portion 211a2 of the upper vibration generator 210 and the second portion 211a2 of the lower vibration generator 230 among three or more vibration generators 210 and 230 can be precisely aligned or positioned at the virtual extension line VL. For example, the second portion 211a2 of the vibration generator 210 positioned closer to the front surface of the display panel 100 overlaps with the second portion 211a2 of another vibration generator 230 positioned less close to the front surface of the display panel 100.

[0532] Reference Figures 12A to 12C One or more of the first vibration generator 210 and the second vibration generator 230 may include a first power line PL1 and a second power line PL2.

[0533] Reference Figure 12A and Figure 12B The first power line PL1 of the first vibration generator 210 and the second vibration generator 230 can be located at the first protective member 213 and electrically connected to the first electrode portion 211b. For example, the first power line PL1 can be located on the rear surface of the first protective member 213 facing the first electrode portion 211b and electrically connected to the first electrode portion 211b. For example, the first power line PL1 can be located on the rear surface of the first protective member 213 directly facing the first electrode portion 211b and electrically connected to the first electrode portion 211b. For example, the first power line PL1 can be located on the rear surface of the first protective member 213 directly facing the first electrode portion 211b and directly electrically connected to the first electrode portion 211b. The second power line PL2 of the first vibration generator 210 and the second vibration generator 230 can be located at the second protective member 215 and electrically connected to the second electrode portion 211c. For example, the second power line PL2 can be located on the rear surface of the second protective member 215 facing the second electrode portion 211c and electrically connected to the second electrode portion 211c. For example, the second power line PL2 can be disposed on the rear surface of the second protective member 215 directly facing the second electrode portion 211c, and can be electrically connected to the second electrode portion 211c.

[0534] Reference Figure 12B ,and Figure 12A In contrast, the first power line PL1 of the first vibration generator 210 and the second vibration generator 230 can be moved to the right and can be set relative to the first direction X. The second power line PL2 of the first vibration generator 210 and the second vibration generator 230 can be moved to the left and can be set relative to the first direction X.

[0535] Reference Figure 12C The first power supply line PL1 of the first vibration generator 210 and the second vibration generator 230 can be disposed at the second protective member 215 and electrically connected to the second electrode portion 211c. For example, the first power supply line PL1 can be disposed on the rear surface of the second protective member 215 facing the second electrode portion 211c and electrically connected to the second electrode portion 211c. For example, the first power supply line PL1 can be disposed on the rear surface of the second protective member 215 directly facing the second electrode portion 211c and directly electrically connected to the second electrode portion 211c.

[0536] The second power supply line PL2 of the first vibration generator 210 and the second vibration generator 230 can be disposed at the first protective member 213 and electrically connected to the first electrode portion 211b. For example, the second power supply line PL2 can be disposed on the rear surface of the first protective member 213 facing the first electrode portion 211b and electrically connected to the first electrode portion 211b. For example, the second power supply line PL2 can be disposed on the rear surface of the first protective member 213 directly facing the first electrode portion 211b and directly electrically connected to the first electrode portion 211b. For example, the first power supply line PL1 can be connected to either the first electrode portion 211b or the second electrode portion 211c, and the second power supply line PL2 can be connected to either the first electrode portion 211b or the second electrode portion 211c. For example, the first power supply line PL1 can be connected to one of the first electrode portion 211b and the second electrode portion 211c, and the second power supply line PL2 can be connected to the other of the first electrode portion 211b or the second electrode portion 211c.

[0537] According to another embodiment of this disclosure, the first power line PL1 of the first vibration generator 210 may not overlap with the first power line PL1 of the second vibration generator 230. Similarly, the second power line PL2 of the first vibration generator 210 may not overlap with the second power line PL2 of the second vibration generator 230. For example, the second power line PL2 may be spaced apart from the first power line PL1 in a plane parallel to the front and rear surfaces of the display panel 100 (or the vibration member). Therefore, the problem of disconnection caused by overlapping power lines can be solved, and the problem of the vibration device becoming thicker due to the increased thickness caused by the overlapping power lines can also be solved. This description can be applied similarly to... Figure 4 and Figure 8 .

[0538] Figure 13 A vibration device according to another embodiment of the present disclosure is shown, and a modification of the foregoing reference is also shown. Figures 10 to 12C The described implementation is achieved through a vibrating component. Therefore, in the following description, repeated descriptions of components other than the vibrating component will be omitted or will be given only briefly.

[0539] Reference Figure 13 In another embodiment of the vibration device 200 according to the present disclosure, the vibration portion 211a of the vibration structure 211 included in each of the vibration generators 210 and 230 may include a plurality of first portions 211a1 and second portions 211a2 disposed between the plurality of first portions 211a1. The plurality of first portions 211a1 may be configured to be spaced apart from each other along a first direction X and a second direction Y.

[0540] Each of the plurality of first portions 211a1 can be configured to be spaced apart from each other along the first direction X and the second direction Y. For example, each of the plurality of first portions 211a1 can have a hexahedral shape (or a hexahedral object shape) of the same size and can be configured in a lattice shape. Each of the plurality of first portions 211a1 can include the same as described above. Figure 3 and Figure 4 The described vibration part 211a and the above reference Figures 10 to 12C The first part 211a1 is made of essentially the same material, therefore the same reference numerals denote the same elements, and their repeated descriptions can be omitted.

[0541] The second portion 211a2 may be disposed between the plurality of first portions 211a1 along each of the first direction X and the second direction Y. The second portion 211a2 may be configured to fill the gap or space between two adjacent first portions 211a1 or to surround each of the plurality of first portions 211a1, and thus may be connected to or attached to adjacent first portions 211a1. According to embodiments of the present disclosure, the width of the second portion 211a2 disposed between two first portions 211a1 adjacent to each other along the first direction X may be the same as or different from the width of the first portions 211a1, and the width of the second portion 211a2 disposed between two first portions 211a1 adjacent to each other along the second direction Y may be the same as or different from the width of the first portions 211a1. The second portion 211a2 may include, as referred to above... Figures 10 to 12C The second part 211a2 is made of essentially the same material, therefore the same reference numerals denote the same elements, and their repeated descriptions may be omitted.

[0542] exist Figure 13In the description and related information, a vibration device 200 according to another embodiment of the present disclosure has been described as including a first vibration generator 210 and a second vibration generator 230, but the embodiments of the present disclosure are not limited thereto. For example, a vibration device 200 according to another embodiment of the present disclosure may include a plurality of (e.g., three or more) vibration generators 210 and 230. In this case, in order to maximize or increase the displacement or amplitude displacement of the vibration device 200, the plurality of vibration generators 210 and 230 may have the same size and may overlap or stack. According to embodiments of the present disclosure, the first portion 211a1 of the vibration generator 210 disposed in the upper (or top) layer of three or more vibration generators 210 and 230 and the first portion 211a1 of the vibration generator 230 disposed in the lower (or bottom) layer of three or more vibration generators 210 and 230 may substantially overlap or stack without interleaving. For example, the first portions 211a1 of the upper vibration generator 210 and the first portions 211a1 of the lower vibration generator 230 in three or more vibration generators 210 and 230 can substantially overlap or stack without interleaving within the tolerance range of the manufacturing process. For example, the first portions 211a1 of the vibration generator 210 disposed closer to the front surface of the display panel 100 (or the vibration member) can overlap, while the first portions 211a1 of the vibration generator 230 disposed less close to the front surface of the display panel 100 (or the vibration member) can overlap. Furthermore, the second portions 211a2 of the upper vibration generator 210 and the second portions 211a2 of the lower vibration generator 230 in three or more vibration generators 210 and 230 can substantially overlap or stack without interleaving. For example, the second portions 211a2 of the upper vibration generator 210 and the second portions 211a2 of the lower vibration generator 230 in three or more vibration generators 210 and 230 can substantially overlap or stack without interleaving within the tolerance range of the manufacturing process. For example, the second portions 211a2 of the vibration generator 210 disposed closer to the front surface of the display panel 100 (or the vibration member) can overlap, while the second portions 211a2 of the vibration generator 230 disposed less close to the front surface of the display panel 100 (or the vibration member) can overlap.

[0543] Therefore, the vibration portion 211a of each of the first vibration generator 210 and the second vibration generator 230 according to embodiments of the present disclosure may include a 1-3 composite structure, and thus may have a resonant frequency of 30 MHz or less, but embodiments of the present disclosure are not limited thereto. For example, the resonant frequency of the vibration portion 211a may vary based on one or more of its shape, length, and thickness.

[0544] Figure 14 A vibration device according to another embodiment of the present disclosure is shown, and modifications are also shown. Figures 10 to 12C The embodiment of the vibrating part is shown in the figure. Therefore, in the following text, repeated descriptions of elements other than the vibrating part may be omitted or will be given briefly.

[0545] Reference Figure 14 In another embodiment of the vibration device 200 according to the present disclosure, the vibration portion 211a of the vibration structure 211 included in each of the vibration generators 210 and 230 may include a plurality of first portions 211a1 and second portions 211a2 disposed between the plurality of first portions 211a1. The plurality of first portions 211a1 may be spaced apart from each other along a first direction X and a second direction Y.

[0546] Each of the plurality of first portions 211a1 according to one embodiment of the present disclosure may have a flat structure with a circular shape. For example, each of the plurality of first portions 211a1 may have a circular plate shape, but the embodiments of the present disclosure are not limited thereto. For example, each of the plurality of first portions 211a1 may have a dot shape including an elliptical shape, a polygon, or an annular shape. Each of the plurality of first portions 211a1 may include the same as described above. Figure 3 and Figure 4 The described vibration part 211a and the above reference Figures 10 to 12C The first part 211a1 is made of essentially the same material, therefore the same reference numerals denote the same elements, and their repeated descriptions can be omitted.

[0547] The second portion 211a2 may be disposed between the plurality of first portions 211a1 along each of the first direction X and the second direction Y. The second portion 211a2 may be configured to surround each of the plurality of first portions 211a1, and thus may be connected to or attached to the side surface of each of the plurality of first portions 211a1. Each of the plurality of first portions 211a1 and the second portion 211a2 may be disposed (or arranged) in parallel on the same plane (or the same layer). The second portion 211a2 may include elements referenced above. Figures 10 to 12CThe second part 211a2 is made of essentially the same material, therefore the same reference numerals denote the same elements, and their repeated descriptions may be omitted.

[0548] In the vibration portion 211a of each of the vibration generators 210 and 230 according to another embodiment of the present disclosure, each of the plurality of first portions 211a1 may have a flat structure in the shape of a triangle, rather than a flat structure in the shape of a circle. For example, each of the plurality of first portions 211a1 may have a triangular plate shape.

[0549] According to embodiments of this disclosure, four adjacent first portions 211a1 of a plurality of first portions 211a1 may be adjacent to each other to form a quadrilateral shape or a square shape (or a square shape). The vertices of the four adjacent first portions 211a1 forming the quadrilateral shape may be adjacent to each other in the central portion (or central part) of the quadrilateral shape.

[0550] According to another embodiment of this disclosure, six adjacent first portions 211a1 of a plurality of first portions 211a1 may be adjacent to each other to form a hexagonal shape (or a regular hexagonal shape). The vertices of the six adjacent first portions 211a1 forming the hexagonal shape may be adjacent to each other in the central portion (or central part) of the hexagonal shape.

[0551] exist Figure 14In the description and related information, a vibration device 200 according to another embodiment of the present disclosure has been described as including a first vibration generator 210 and a second vibration generator 230; however, embodiments of the present disclosure are not limited thereto. For example, a vibration device 200 according to another embodiment of the present disclosure may include a plurality of (e.g., three or more) vibration generators 210 and 230. In this case, to maximize or increase the displacement or amplitude displacement of the vibration device 200, the plurality of vibration generators 210 and 230 may have the same size and may overlap or stack. According to embodiments of the present disclosure, the first portion 211a1 of the upper vibration generator 210 and the first portion 211a1 of the lower vibration generator 230 in the three or more vibration generators 210 and 230 may substantially overlap or stack without interleaving. For example, the first portion 211a1 of the vibration generator 210 disposed closer to the front surface of the display panel 100 (or the vibration member) may overlap, while the first portion 211a1 of the vibration generator 230 disposed less close to the front surface of the display panel 100 (or the vibration member) may overlap. For example, the first portions 211a1 of the upper vibration generator 210 and the first portions 211a1 of the lower vibration generator 230 of three or more vibration generators 210 and 230 may substantially overlap or stack without interlacing within the tolerance range of the manufacturing process. Furthermore, the second portions 211a2 of the upper vibration generator 210 and the second portions 211a2 of the lower vibration generator 230 of three or more vibration generators 210 and 230 may substantially overlap or stack without interlacing. For example, the second portions 211a2 of the upper vibration generator 210 and the second portions 211a2 of the lower vibration generator 230 in three or more vibration generators 210 and 230 can substantially overlap or stack without interleaving within the tolerance range of the manufacturing process. For example, the second portions 211a2 of the vibration generator 210 disposed closer to the front surface of the display panel 100 (or the vibration member) can overlap, while the second portions 211a2 of the vibration generator 230 disposed less close to the front surface of the display panel 100 (or the vibration member) can overlap.

[0552] Therefore, the vibration portion 211a of each of the first vibration generator 210 and the second vibration generator 230 according to embodiments of the present disclosure may include a 1-3 composite structure and may be implemented as a circular vibration source (or vibrator). Thus, vibration characteristics or sound output characteristics can be enhanced, and the vibration portion 211a may have a resonant frequency of 30 MHz or less, but embodiments of the present disclosure are not limited thereto. For example, the resonant frequency of the vibration portion 211a may vary based on one or more of its shape, length, and thickness.

[0553] Figure 15 A vibration device according to another embodiment of the present disclosure is shown. Figures 16A to 16E It is along Figure 15 The cross-sectional view taken by line V-V' shown in the figure also illustrates the present disclosure. Figures 10 to 12C The vibration generator shown is a modified implementation.

[0554] Reference Figures 15 to 16E In another embodiment of the vibration device according to the present disclosure, each of the first vibration generator 210 and the second vibration generator 230 may include at least one or more vibration structures 200A to 200D or multiple vibration structures 200A to 200D. Figures 15 to 16E An example including four vibration structures is shown, each of the first vibration generator 210 and the second vibration generator 230 according to embodiments of the present disclosure may be configured to include one, two or more vibration structures.

[0555] Multiple vibration structures 200A to 200D may be spaced apart from each other in each of the first direction X and the second direction Y. For example, multiple vibration structures 200A to 200D may be electrically separated and arranged while being spaced apart from each other along each of the first direction X and the second direction Y. For example, each of the multiple vibration structures 200A to 200D may be a vibration array, a vibration generating array, a partitioned vibration array, a partial vibration array, a partitioned vibration structure, a partial vibration structure, a separate vibration structure, a vibration module, a vibration module array portion, a vibration array structure, a diaphragm, a displacement generator, a diaphragm, a displacement structure, a sound generating structure, a sound generator, a tiling vibration array, a tiling vibration array module, or a tiling diaphragm, but the embodiments of this disclosure are not limited thereto.

[0556] Each of the plurality of vibrating structures 200A to 200D can vibrate by alternately and / or repeatedly contracting and expanding based on the piezoelectric effect. Each of the plurality of vibrating structures 200A to 200D can be arranged or laid flat at specific intervals. Therefore, each of the first vibration generator 210 and the second vibration generator 230 with the plurality of vibrating structures 200A to 200D laid flat can be referred to as a vibrating diaphragm, displacement generator, displacement membrane, displacement structure, sound generating structure, sound generator, laid-flat vibration array, laid-flat vibration array module, or laid-flat vibrating diaphragm, but the embodiments of this disclosure are not limited thereto.

[0557] Each of the plurality of vibration structures 200A to 200D according to embodiments of the present disclosure may have a quadrilateral shape. For example, each of the plurality of vibration structures 200A to 200D may have a quadrilateral shape with a width of about 5 cm or greater. For example, each of the plurality of vibration structures 200A to 200D may have a square shape with a size of 5 cm × 5 cm or greater.

[0558] Multiple vibrating structures 200A to 200D can be arranged or laid out at certain intervals (or distances), thus enabling the implementation of a single vibrating device (or a single vibrating device or a single vibrating unit) that is driven as a complete unit rather than independently. For example, the multiple vibrating structures 200A to 200D can be electrically separated and spaced apart from each other by a distance. According to embodiments of this disclosure, the first separation distance D1 between the multiple vibrating structures 200A to 200D relative to the first direction X can be 0.1 mm or greater and less than 3 cm, but embodiments of this disclosure are not limited thereto. Furthermore, the second separation distance D2 between the multiple vibrating structures 200A to 200D relative to the second direction Y can be 0.1 mm or greater and less than 3 cm, but embodiments of this disclosure are not limited thereto. For example, the first separation distance D1 can be the same as the second separation distance D2. For example, within the process error range, the first separation distance D1 can be the same as the second separation distance D2.

[0559] According to embodiments of this disclosure, a plurality of vibrating structures 200A to 200D can be arranged or tiled with a separation distance (or interval) D1 and D2 of 0.1 mm or greater and less than 3 cm, and can therefore be driven as a vibrating device to increase the reproduction frequency band and sound pressure level characteristics of the sound generated based on a single vibration of the plurality of vibrating structures 200A to 200D. For example, the plurality of vibrating structures 200A to 200D can be arranged at intervals of 0.1 mm or greater and less than 5 mm to increase the reproduction frequency band of the sound generated based on a single vibration of the plurality of vibrating structures 200A to 200D and to increase the sound pressure level characteristics of the low-pitched sound bands (e.g., at 500 Hz or lower).

[0560] According to embodiments of this disclosure, when multiple vibration structures 200A to 200D are arranged with an interval (or distance) D1 and D2 of less than 0.1 mm or without an interval (or distance) D1 and D2, the reliability of each of the vibration structures 200A to 200D or the first vibration generator 210 and the second vibration generator 230 may be reduced due to damage or cracks caused by physical contact between them when each of the vibration structures 200A to 200D vibrates.

[0561] According to embodiments of this disclosure, when multiple vibrating structures 200A to 200D are arranged at intervals (or distances) D1 and D2 of 3 cm or greater, the multiple vibrating structures 200A to 200D do not need to be driven as a single vibrating device due to the independent vibration of each of them. Therefore, the reproduction frequency band and sound pressure level characteristics of the sound generated based on the vibration of the multiple vibrating structures 200A to 200D can be reduced. For example, when multiple vibrating structures 200A to 200D are arranged at intervals (or distances) D1 and D2 of 3 cm or more, the sound characteristics and sound pressure level characteristics of the low-pitched sound band (e.g., 500 Hz or lower) can be reduced respectively.

[0562] According to embodiments of this disclosure, when multiple vibrating structures 200A to 200D are arranged at intervals (or distances) of 5 mm, each of the multiple vibrating structures 200A to 200D may not be perfectly driven as a vibrating device. Therefore, the sound characteristics and sound pressure level characteristics of each of the low-pitched vocal bands (e.g., 200 Hz or lower) may be reduced.

[0563] According to another embodiment of this disclosure, when multiple vibrating structures 200A to 200D are arranged at intervals (or distances) of 1 mm, each of the multiple vibrating structures 200A to 200D can be driven as a vibration device. Therefore, the sound reproduction frequency band can be increased, and the sound of the low-pitched sound band (e.g., a sound pressure level characteristic of 500 Hz or below) can be amplified. For example, when multiple vibrating structures 200A to 200D are arranged at intervals (or distances) of 1 mm, each of the first vibration generator 210 and the second vibration generator 230 can be implemented as a large-area vibrator amplified based on the optimized separation distance between the multiple vibrating structures 200A to 200D. Therefore, each of the first vibration generator 210 and the second vibration generator 230 can be driven as a large-area vibrator based on the individual vibration of the multiple vibrating structures 200A to 200D. Therefore, both sound characteristics and sound pressure level characteristics can be enhanced in the low-pitched vocal cords and reproducing vocal cords of the sound generated by the large-area vibration of each of the first vibration generator 210 and the second vibration generator 230.

[0564] Therefore, in order to achieve individual vibration (or a single vibration device) of multiple vibrating structures 200A to 200D, the separation distance between the multiple vibrating structures 200A to 200D can be adjusted to 0.1mm or greater and less than 3cm. Furthermore, in order to achieve individual vibration (or a single vibration device) of multiple vibrating structures 200A to 200D and to increase the sound pressure level characteristics of the bass vocal cords, the separation distance between the multiple vibrating structures 200A to 200D can be adjusted to 0.1mm or greater and less than 5mm.

[0565] Each of the first vibration generator 210 and the second vibration generator 230 according to embodiments of the present disclosure may include a first vibration structure 200A to a fourth vibration structure 200D, the first vibration structure 200A to the fourth vibration structure 200D being electrically disconnected from each other and arranged at intervals from each other along a first direction X and a second direction Y. For example, the first to fourth vibration structures 200A to 200D may be arranged in a 2×2 configuration or laid flat.

[0566] According to embodiments of this disclosure, the first vibration structure 200A and the second vibration structure 200B may be spaced apart from each other along a first direction X. The third vibration structure 200C and the fourth vibration structure 200D may be spaced apart from each other in the first direction X, and may be spaced apart from each of the first vibration structure 200A and the second vibration structure 200B in a second direction Y. The first vibration structure 200A and the third vibration structure 200C may be spaced apart from each other in the second direction Y so as to face each other. The second vibration structure 200B and the fourth vibration structure 200D may be spaced apart from each other in the second direction Y so as to face each other.

[0567] Each of the first vibration structure 200A to the fourth vibration structure 200D according to embodiments of the present disclosure may include a vibration portion 211a, a first electrode portion 211b, and a second electrode portion 211c.

[0568] The vibrating portion 211a may include a ceramic matrix material capable of achieving relatively high vibration. For example, the vibrating portion 211a may include a 1-3 composite structure with piezoelectric properties having 1-3 vibration modes or a 2-2 composite structure with piezoelectric properties having 2-2 vibration modes. For example, the vibrating portion 211a may include a first portion 211a1 and a second portion 211a2, similar to those described above. Figure 3 The described vibration part 211a, or similar to the reference... Figures 10 to 14 Any of the described vibration parts 211a, therefore, the same reference numerals denote the same elements, and their repeated descriptions may be omitted.

[0569] According to embodiments of the present disclosure, the vibrating portion 211a may be formed of a transparent, translucent or opaque piezoelectric material, and the vibrating portion 211a may be transparent, translucent or opaque.

[0570] The first electrode portion 211b can be disposed on the first surface of the vibrating portion 211a and can be electrically connected to the first surface of the vibrating portion 211a. For example, the first electrode portion 211b can be the same as described above. Figures 2 to 14 The first electrode portion 211b described in any of them is substantially the same; therefore, the same reference numerals denote the same elements, and their repeated descriptions may be omitted.

[0571] The second electrode portion 211c can be disposed on the second surface of the vibrating portion 211a and can be electrically connected to the second surface of the vibrating portion 211a. For example, the second electrode portion 211c can be the same as described above. Figures 2 to 14 The second electrode portion 211c described in any of the figures is substantially the same; therefore, the same reference numerals denote the same elements, and their repeated descriptions may be omitted.

[0572] Each of the first vibration generator 210 and the second vibration generator 230 according to another embodiment of the present disclosure may further include a first protective member 1213 and a second protective member 1215.

[0573] The first protective member 1213 may be disposed on the first surface of each of the first vibration generator 210 and the second vibration generator 230. For example, the first protective member 1213 may cover the first electrode portion 211b disposed on the first surface of each of the plurality of vibration structures 200A to 200D. Therefore, the first protective member 1213 may be commonly connected to the first surface of each of the plurality of vibration structures 200A to 200D, or may commonly support the first surface of each of the plurality of vibration structures 200A to 200D. Therefore, the first protective member 1213 may protect the first surface or the first electrode portion 211b of each of the plurality of vibration structures 200A to 200D.

[0574] According to embodiments of the present disclosure, a first protective member 1213 can be disposed on a first surface of each of the plurality of vibrating structures 200A to 200D via a first adhesive layer 1212. For example, the first protective member 1213 can be disposed on a first surface of each of the plurality of vibrating structures 200A to 200D via a film lamination process using the first adhesive layer 1212. Alternatively, the first protective member 1213 can be directly disposed on a first surface of each of the plurality of vibrating structures 200A to 200D via a film lamination process using the first adhesive layer 1212. Therefore, the plurality of vibrating structures 200A to 200D can be integrated (or disposed) or laid flat with the first protective member 1213 to have specific intervals D1 and D2. Thus, the plurality of vibrating structures 200A to 200D can be implemented as a single membrane or a single structure.

[0575] The second protective member 1215 may be disposed on the second surface of each of the first vibration generator 210 and the second vibration generator 230. For example, the second protective member 1215 may cover the second electrode portion 211c disposed on the second surface of each of the plurality of vibration structures 200A to 200D. Therefore, the second protective member 1215 may be commonly connected to the second surface of each of the plurality of vibration structures 200A to 200D, or may commonly support the second surface of each of the plurality of vibration structures 200A to 200D. Thus, the second protective member 1215 may protect the second surface or the second electrode portion 211c of each of the plurality of vibration structures 200A to 200D.

[0576] According to embodiments of the present disclosure, the second protective member 1215 can be disposed on the second surface of each of the plurality of vibrating structures 200A to 200D via a second adhesive layer 1214. For example, the second protective member 1215 can be disposed on the second surface of each of the plurality of vibrating structures 200A to 200D via a film lamination process using the second adhesive layer 1214. For example, the second protective member 1215 can be directly disposed on the second surface of each of the plurality of vibrating structures 200A to 200D via a film lamination process using the second adhesive layer 1214. For example, the first adhesive layer 1212 and the second adhesive layer 1214 are connected to each other to surround the plurality of vibrating structures 200A to 200D. Therefore, the plurality of vibrating structures 200A to 200D can be integrated (or disposed) or laid flat with the second protective member 1215 to have specific intervals D1 and D2. Therefore, the plurality of vibrating structures 200A to 200D can be implemented as a single membrane or a single structure.

[0577] Each of the first protective member 1213 and the second protective member 1215 according to embodiments of the present disclosure may be formed of plastic, fiber, or wood materials, but embodiments of the present disclosure are not limited thereto. One or more of the first protective member 1213 and the second protective member 1215 may be attached or coupled to the display panel 100 by means of a connecting member (or a second connecting member).

[0578] The first adhesive layer 1212 may be disposed between the first surfaces of each of the plurality of vibrating structures 200A to 200D and between the plurality of vibrating structures 200A to 200D. For example, the first adhesive layer 1212 may be formed on the rear surface (or inner surface) of the first surface of the first protective member 1213 facing each of the first vibration generator 210 and the second vibration generator 230. For example, the first adhesive layer 1212 may be disposed at the first surface of each of the plurality of vibrating structures 200A to 200D and fill the spaces between the plurality of vibrating structures 200A to 200D.

[0579] The second adhesive layer 1214 may be disposed between the second surfaces of each of the plurality of vibrating structures 200A to 200D and between the plurality of vibrating structures 200A to 200D. For example, the second adhesive layer 1214 may be formed on the front surface (or outer surface) of the second protective member 1215 facing each of the second surfaces of the first vibration generator 210 and the second vibration generator 230. For example, the second adhesive layer 1214 may be disposed at the second surface of each of the plurality of vibrating structures 200A to 200D and fill the spaces between the plurality of vibrating structures 200A to 200D.

[0580] The first adhesive layer 1212 and the second adhesive layer 1214 can be connected to each other among the plurality of vibrating structures 200A to 200D. Therefore, each of the plurality of vibrating structures 200A to 200D can be surrounded by the first adhesive layer 1212 and the second adhesive layer 1214. For example, the first adhesive layer 1212 and the second adhesive layer 1214 can completely surround all of the plurality of vibrating structures 200A to 200D. For example, the first adhesive layer 1212 and the second adhesive layer 1214 can be referred to as cover members, but embodiments of this disclosure are not limited thereto. When both the first adhesive layer 1212 and the second adhesive layer 1214 are cover members, a first protective member 1213 can be disposed on a first surface of the cover member, and a second protective member 1215 can be disposed on a second surface of the cover member.

[0581] Each of the first adhesive layer 1212 and the second adhesive layer 1214 according to embodiments of the present disclosure may include an electrically insulating material with adhesive properties, and may include a material capable of compression and decompression. For example, each of the first adhesive layer 1212 and the second adhesive layer 1214 may include epoxy resin, acrylic resin, silicone resin, or polyurethane resin, but embodiments of the present disclosure are not limited thereto. For example, each of the first adhesive layer 1212 and the second adhesive layer 1214 may be configured to be transparent, translucent, or opaque.

[0582] Each of the first vibration generator 210 and the second vibration generator 230 according to another embodiment of the present disclosure may further include a first power line PL1 disposed at the first protective member 1213, a second power line PL2 disposed at the second protective member 1215, and a pad portion 1217 electrically connected to the first power line PL1 and the second power line PL2.

[0583] The first power line PL1 may be disposed on a first surface of the first protective member 1213 facing each of the first surfaces of the first vibration generator 210 and the second vibration generator 230. For example, in the first protective member 1213, the first surface may be the front surface or the opposite surface of the electrode. The first power line PL1 may be electrically connected to the first electrode portion 211b of each of the plurality of vibration structures 200A to 200D. For example, the first power line PL1 may be directly electrically connected to the first electrode portion 211b of each of the plurality of vibration structures 200A to 200D. As an embodiment of the present disclosure, the first power line PL1 may be electrically connected to the first electrode portion 211b of each of the plurality of vibration structures 200A to 200D via an anisotropic conductive film. As another embodiment of the present disclosure, the first power line PL1 may be electrically connected to the first electrode portion 211b of each of the plurality of vibration structures 200A to 200D via a conductive material (or particles) included in the first adhesive layer 1212.

[0584] According to an embodiment of the present disclosure, the first power line PL1 may include a first (1-1) power line PL11 and a second (1-2) power line PL12 disposed along the second direction Y. For example, the first (1-1) power line PL11 may be electrically connected to the first electrode portion 211b of each of the first vibration structure 200A and the third vibration structure 200C (or the first group or the first array group) of the plurality of vibration structures 200A to 200D. For example, the first vibration structure 200A and the third vibration structure 200C may be arranged in a first column parallel to the second direction Y in the plurality of vibration structures 200A to 200D. The second (1-2) power line PL12 may be electrically connected to the first electrode portion 211b of each of the second vibration structure 200B and the fourth vibration structure 200D (or the second group or the second array group) arranged in a second column parallel to the second direction Y in the plurality of vibration structures 200A to 200D. For example, the second vibration structure 200B and the fourth vibration structure 200D can be arranged in a second column parallel to the second direction Y among the multiple vibration structures 200A to 200D.

[0585] The second power line PL2 can be disposed on a first surface of the second protective member 1215 facing each of the second surfaces of the first vibration generator 210 and the second vibration generator 230. For example, in the second protective member 1215, the first surface can be the bottom surface or the opposite surface of the electrode. The second power line PL2 can be electrically connected to the second electrode portion 211c of each of the plurality of vibration structures 200A to 200D. For example, the second power line PL2 can be directly electrically connected to the second electrode portion 211c of each of the plurality of vibration structures 200A to 200D. As an embodiment of the present disclosure, the second power line PL2 can be electrically connected to the second electrode portion 211c of each of the plurality of vibration structures 200A to 200D through an anisotropic conductive film. As another embodiment of the present disclosure, the second power line PL2 can be electrically connected to the second electrode portion 211c of each of the plurality of vibration structures 200A to 200D through a conductive material (or particles) included in the second adhesive layer 1214.

[0586] According to an embodiment of the present disclosure, the second power line PL2 may include a (2-1) power line PL21 and a (2-2) power line PL22 disposed along the second direction Y. For example, the (2-1) power line PL21 may be electrically connected to the second electrode portion 211c of each of the first vibration structure 200A and the third vibration structure 200C (or the first group or the first array group) of the plurality of vibration structures 200A to 200D. For example, the first vibration structure 200A and the third vibration structure 200C may be arranged in a first column parallel to the second direction Y in the plurality of vibration structures 200A to 200D. The (2-2) power line PL22 may be electrically connected to the second electrode portion 211c of each of the second vibration structure 200B and the fourth vibration structure 200D (or the second group or the second array group) arranged in a second column parallel to the second direction Y in the plurality of vibration structures 200A to 200D. For example, the second vibration structure 200B and the fourth vibration structure 200D can be arranged in a second column parallel to the second direction Y among the multiple vibration structures 200A to 200D.

[0587] The pad portion 1217 may be disposed at each of the first vibration generator 210 and the second vibration generator 230 to be electrically connected to a portion (or an end) of at least one or more of the first power line PL1 and the second power line PL2. According to embodiments of the present disclosure, the pad portion 1217 may include a first pad electrode electrically connected to a portion of the first power line PL1 and a second pad electrode electrically connected to a portion of the second power line PL2.

[0588] The first pad electrode can be connected together to a portion (or one end) of each of the (1-1) power line PL11 and the (1-2) power line PL12 of the first power line PL1. For example, a portion (or one end) of each of the (1-1) power line PL11 and the (1-2) power line PL12 can branch off from the first pad electrode.

[0589] The second pad electrode can be connected to a portion (or end) of each of the (2-1) power lines PL21 and (2-2) power lines PL22 of the second power line PL2. For example, a portion (or end) of each of the (2-1) power lines PL21 and (2-2) power lines PL22 can branch off from the second pad electrode.

[0590] According to embodiments of this disclosure, each of the first power line PL1, the second power line PL2, and the pad portion 1217 can be configured as a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material, thereby being transparent, semi-transparent, or opaque.

[0591] Each of the first vibration generator 210 and the second vibration generator 230 according to another embodiment of the present disclosure may further include a flexible cable 1219.

[0592] The flexible cable 1219 can be electrically connected to pad portions 1217 disposed at each of the first vibration generator 210 and the second vibration generator 230, and can supply one or more vibration drive signals (or sound signals) provided from the vibration drive circuit to each of the first vibration generator 210 and the second vibration generator 230. The flexible cable 1219 according to embodiments of the present disclosure may include a first terminal electrically connected to a first pad electrode of the pad portion 1217 and a second terminal electrically connected to a second pad electrode of the pad portion 1217. For example, the flexible cable 1219 may be a flexible printed circuit cable or a flexible flat cable, but embodiments of the present disclosure are not limited thereto.

[0593] Therefore, the vibration device 200 according to another embodiment of this disclosure may include a plurality of vibration structures 200A to 200D, which are implemented as a single vibrator without being driven independently, and thus can be driven as a large-area vibrator based on the individual vibration of the plurality of vibration structures 200A to 200D. For example, the plurality of vibration structures 200A to 200D may be a single vibrator arranged (or tiled) at specific intervals D1 and D2. Therefore, the vibration device 200 may cause a large-area vibration of a display panel or a vibrating object (or vibrating member), or may cause itself to vibrate over a large area, thereby increasing or enhancing the sound characteristics and sound pressure level characteristics in the bass phonographs and reproducing phonographs of the sound output from the display panel or the vibrating object (or vibrating member).

[0594] Reference Figures 16A to 16DThe first power line PL1 of the first vibration generator 210 and the second vibration generator 230 can be connected to the first electrode portion 211b. The second power line PL2 of the first vibration generator 210 and the second vibration generator 230 can be connected to the second electrode portion 211c. For example, the first electrode portion 211b of the upper-layer first vibration generator 210 and the first electrode portion 211b of the lower-layer second vibration generator 230 can be connected to the first power line PL1. The second electrode portion 211c of the upper-layer first vibration generator 210 and the second electrode portion 211c of the lower-layer second vibration generator 230 can be connected to the second power line PL2. For example, the first electrode portion 211b of the vibration generator 210, which is located closer to the front surface of the display panel 100 (or the vibration member), can be connected to the first power line PL1. The second electrode portion 211c of another vibration generator 230, which is located less close to the front surface of the display panel 100 (or the vibration member), can be connected to the second power line PL2. For example, the first electrode portion 211b provided at the first vibration generator 210 and the first electrode portion 211b provided at the second vibration generator 230 can be connected to the first power supply line PL1. The second electrode portion 211c provided at the first vibration generator 210 and the second electrode portion 211c provided at the second vibration generator 230 can be connected to the second power supply line PL2.

[0595] Reference Figure 16A The first power line PL1 of the first vibration generator 210 can overlap with the first power line PL1 of the second vibration generator 230. The second power line PL2 of the first vibration generator 210 can overlap with the second power line PL2 of the second vibration generator 230. The first power line PL1 of the first vibration generator 210 can overlap with the second power line PL2 of the second vibration generator 230. The first power line PL1 of the second vibration generator 230 can overlap with the second power line PL2 of the first vibration generator 210.

[0596] Reference Figures 16B to 16DThe first power line PL1 connected to the first electrode portion 211b of the upper-layer first vibration generator 210 among the multiple vibration generators may not overlap with the second power line PL2 connected to the second electrode portion 211c of the upper-layer first vibration generator 210 among the multiple vibration generators. For example, the first power line PL1 connected to the first electrode portion 211b of the upper-layer first vibration generator 210 among the multiple vibration generators may not overlap with the second power line PL2 connected to the second electrode portion 211c of the upper-layer first vibration generator 210 among the multiple vibration generators. The first power line PL1 connected to the first electrode portion 211b of the lower-layer second vibration generator 230 among the multiple vibration generators may not overlap with the second power line PL2 connected to the second electrode portion 211c of the lower-layer second vibration generator 230 among the multiple vibration generators. For example, the first power line PL1 connected to the first electrode portion 211b of the second vibration generator 230 among the multiple vibration generators may not overlap with the second power line PL2 connected to the second electrode portion 211c of the second vibration generator 230 among the multiple vibration generators. For example, the first electrode portion 211b of the vibration generator 210 disposed closer to the front surface of the display panel 100 (or the vibration member) may be connected to the first power line PL1. The second electrode portion 211c of another vibration generator 230 disposed less close to the front surface of the display panel 100 (or the vibration member) may be connected to the second power line PL2. For example, the second power line PL2 connected to the second electrode portion 211c may be spaced apart from the first power line PL1 connected to the first electrode portion 211b in a plane parallel to the front and rear surfaces of the display panel 100 (or the vibration member). For example, the second power line PL2 may be spaced apart from the first power line PL1 in a plane parallel to the front and rear surfaces of the display panel 100 (or the vibration member).

[0597] Reference Figure 16B The first power line PL1 of the first vibration generator 210 may overlap with the second power line PL2 of the second vibration generator 230. Alternatively, the second power line PL2 of the first vibration generator 210 may overlap with the first power line PL1 of the second vibration generator 230. The first power line PL1 of the first vibration generator 210 may not overlap with the first power line PL1 of the second vibration generator 230. The second power line PL2 of the first vibration generator 210 may overlap with the second power line PL2 of the second vibration generator 230. Therefore, the problem of disconnection caused by power line overlap can be solved, and the problem of increased thickness of the vibration equipment due to the overlap of power lines can also be solved.

[0598] Reference Figure 16CThe first power line PL1 of the first vibration generator 210 can overlap with the first power line PL1 of the second vibration generator 230. The second power line PL2 of the first vibration generator 210 can overlap with the second power line PL2 of the second vibration generator 230. Figure 16A In comparison, the second power line PL2 of the first vibration generator 210 and the second power line PL2 of the second vibration generator 230 can be moved to the left and right relative to the first direction X, and can be configured to do so. Therefore, all the first power lines PL1 and second power lines PL2 of each of the first vibration generator 210 and the second vibration generator 230 can be made to not overlap. Thus, the disconnection caused by the overlap of power lines can be resolved, and the problem of the vibration device becoming thicker due to the increased thickness caused by the overlap of power lines can be solved.

[0599] Reference Figure 16D The first power line PL1 of the first vibration generator 210 can overlap with the first power line PL1 of the second vibration generator 230. The second power line PL2 of the first vibration generator 210 can overlap with the second power line PL2 of the second vibration generator 230. Figure 16A In comparison, the first power line PL1 of the first vibration generator 210 and the first power line PL2 of the second vibration generator 230 can be moved to the left and right relative to the first direction X, and can be configured such that all the first power lines PL1 and second power lines PL2 of each of the first vibration generator 210 and the second vibration generator 230 do not overlap. Therefore, the disconnection caused by the overlap of power lines can be resolved, and the problem of the vibration device becoming thicker due to the increased thickness caused by the overlap of power lines can also be solved.

[0600] Reference Figure 16EIn the first vibration generator 210, the first electrode portion 211b of the first vibration structure 200A and the first electrode portion 211b of the second vibration structure 200B can be disposed on different surfaces relative to the vibration portion 211a. For example, in the first vibration generator 210, the first electrode portion 211b of the first vibration structure 200A and the first electrode portion 211b of the second vibration structure 200B can be disposed on different layers relative to the vibration portion 211a. For example, in the first vibration generator 210, the first electrode portion 211b of the first vibration structure 200A and the first electrode portion 211b of the second vibration structure 200B can be arranged in a serrated shape. For example, the first electrode portion 211b of the first vibration structure 200A of the first vibration generator 210 can be disposed on the surface facing the first protective member 1213. For example, the first electrode portion 211b of the second vibration structure 200B can be disposed on the surface facing the second protective member 1215. For example, the first electrode portion 211b of the first vibration structure 200A of the first vibration generator 210 can be connected to the first power supply line PL1, and the first electrode portion 211b of the second vibration structure 200B of the first vibration generator 210 can be connected to the second power supply line PL2.

[0601] Reference Figure 16E In the second vibration generator 230, the first electrode portion 211b of the first vibration structure 200A and the first electrode portion 211b of the second vibration structure 200B can be disposed on different surfaces relative to the vibration portion 211a. For example, in the second vibration generator 230, the first electrode portion 211b of the first vibration structure 200A and the first electrode portion 211b of the second vibration structure 200B can be disposed on different layers relative to the vibration portion 211a. For example, in the second vibration generator 230, the first electrode portion 211b of the first vibration structure 200A and the first electrode portion 211b of the second vibration structure 200B can be arranged in a serrated shape. For example, the first electrode portion 211b of the first vibration structure 200A of the second vibration generator 230 can be disposed on the surface facing the first protective member 1213. For example, the first electrode portion 211b of the second vibration structure 200B of the second vibration generator 230 can be disposed on the surface facing the second protective member 1215. For example, the first electrode portion 211b of the first vibration structure 200A of the second vibration generator 230 can be connected to the first power supply line PL1, and the first electrode portion 211b of the second vibration structure 200B of the second vibration generator 230 can be connected to the second power supply line PL2.

[0602] According to another embodiment of this disclosure, the first electrode portion 211b of the first vibration structure 200A of the first vibration generator 210 can be connected to the second power line PL2, and the first electrode portion 211b of the second vibration structure 200B of the first vibration generator 210 can be connected to the first power line PL1. Similarly, the first electrode portion 211b of the first vibration structure 200A of the second vibration generator 230 can be connected to the second power line PL2, and the first electrode portion 211b of the second vibration structure 200B of the second vibration generator 230 can be connected to the first power line PL1.

[0603] According to another embodiment of this disclosure, Figures 16B to 16D The description of the first power line PL1 and / or the second power line PL2 can also be applied to... Figure 16E .

[0604] Figures 16A to 16E The description can also be applied to Figure 21 , Figure 23 , Figure 25 , Figure 27 and Figure 29 .

[0605] Figure 17 An apparatus according to another embodiment of the present disclosure is shown, and is along... Figure 1 The cross-sectional view shown is taken by line I-I'. Figure 17 An embodiment of the present disclosure is shown, wherein the board is further configured in Figures 2 to 16E The device shown in the image.

[0606] Reference Figure 17 The apparatus according to another embodiment of the present disclosure may include a display panel 100 for displaying images and a vibration device 200 for vibrating the display panel 100 and on the rear surface (or back side surface) of the display panel 100. The apparatus according to another embodiment of the present disclosure may also include a plate 170 disposed between the display panel 100 and the vibration device 200.

[0607] Each of the display panel 100 and the vibration device 200 can be referenced above. Figures 2 to 16E Each of the display panel 100 and vibration device 200 described is substantially the same, therefore, their repeated descriptions may be omitted or will be given briefly.

[0608] Plate 170 may have the same shape and size as the rear surface of display panel 100, or it may have the same shape and size as vibration device 200. In another embodiment of this disclosure, plate 170 may have a different size than display panel 100. For example, plate 170 may be smaller than display panel 100. In another embodiment of this disclosure, plate 170 may have a different size than vibration device 200. For example, plate 170 may be larger or smaller than vibration device 200. Vibration device 200 may be the same size as or smaller than display panel 100.

[0609] The plate 170 according to embodiments of the present disclosure may include metallic materials. For example, the plate 170 may include one or more materials such as stainless steel, aluminum (Al), magnesium (Mg), magnesium alloy, magnesium-lithium (Mg-Li) alloy, and aluminum alloy, but embodiments of the present disclosure are not limited thereto.

[0610] The plate 170 according to embodiments of the present disclosure may include a plurality of openings. The plurality of openings may be configured to have a predetermined size and a predetermined interval (or distance). For example, the plurality of openings may be arranged along a first direction X and a second direction Y to have a predetermined size and a predetermined interval. Due to the plurality of openings, sound waves (or sound pressure) based on the vibration of the vibration device 200 may not be dispersed by the plate 170 and may be concentrated on the display panel 100. Therefore, the loss of vibration caused by the plate 170 can be minimized, thereby increasing the sound pressure characteristics of the sound generated based on the vibration of the display panel 100. For example, the plate 170 including the plurality of openings may have a grid shape. For example, the plate 170 including the plurality of openings may be a grid plate.

[0611] According to embodiments of the present disclosure, plate 170 can be connected to or attached to the rear surface of display panel 100. For example, when display panel 100 is a light-emitting display panel, plate 170 can be disposed on the rear surface of the encapsulation portion of the light-emitting display panel. Plate 170 can be configured to be disposed on or attached to the rear surface of the encapsulation portion. Plate 170 can dissipate heat generated in display panel 100. For example, plate 170 can be referred to as a heat dissipation member, heat sink, or heat radiator, but embodiments of the present disclosure are not limited thereto. For example, when plate 170 is configured to be disposed on or attached to the rear surface of the encapsulation portion, the first support member 310 can be omitted.

[0612] According to embodiments of this disclosure, plate 170 can enhance the mass of vibrating device 200, which is disposed on or suspended from the rear surface of display panel 100. Therefore, plate 170 can reduce the resonant frequency of vibrating device 200 based on the increased mass of vibrating device 200. Thus, plate 170 can increase the sound characteristics and sound pressure level characteristics of the low-pitched vocal cords generated by the vibration of vibrating device 200, and can enhance the flatness of the sound pressure level characteristics. For example, the flatness of the sound pressure level characteristics can be the magnitude of the deviation between the highest and lowest sound pressure levels. For example, plate 170 can be referred to as a counterweight member, a mass member, a sound flattening member, etc., but embodiments of this disclosure are not limited thereto.

[0613] According to embodiments of this disclosure, based on the stiffness of the plate 170, the displacement (or bending force or flexural force) or amplitude displacement (or vibration width) of the display panel 100 on which the plate 170 is disposed can decrease as the thickness of the plate 170 increases. Therefore, the sound pressure level characteristics and sound characteristics of the low-pitched vocal cords of the sound generated based on the displacement (or vibration) of the display panel 100 may be reduced.

[0614] According to embodiments of this disclosure, in addition to the thickness of the plate 170, the displacement of the display panel 100 can also be affected by the contact area between the vibration device 200 and the plate 170. For example, as Figure 18 As shown, when the same force is applied based on the thickness of plate 170, the displacement of display panel 100 can increase as the contact area between vibration device 200 and plate 170 or the attachment area of ​​vibration device 200 gradually decreases. For example, when the thickness of plate 170 is 0.25 mm, the displacement based on vibration device 200 having a first size ( Figure 18 The amplitude shift (or amount of shift) of the display panel 100 (thick solid line in the image) can be greater than the shift of the vibration device 200 based on a second size that is greater than the first size. Figure 18The displacement of the display panel 100 (shown as dashed lines in the diagram) is thus determined. Therefore, the vibration device 200 according to embodiments of the present disclosure may include a plurality of vibration generators 210 and 230 having a first size and overlapping each other, thereby minimizing the reduction in the displacement of the display panel 100 caused by the thickness of the plate 170. Furthermore, the vibration device 200 according to embodiments of the present disclosure may include a plurality of vibration generators 210 and 230 having a first size and overlapping each other, thus increasing or maximizing the displacement of the display panel 100, thereby increasing or enhancing the sound pressure level characteristics and bass vocal characteristics of the sound generated based on the displacement of the display panel 100. Therefore, in another embodiment of the device according to the present disclosure, the vibration device 200 may increase or maximize the displacement of the display panel 100 in which the plate 170 is disposed based on the stacked structure of the overlapping vibration generators 210 and 230. The plate 170 may have a thickness that allows the heat of the display panel 100 to dissipate smoothly. For example, plate 170 may have a thickness of 0.1 mm to 0.75 mm, but the embodiments of this disclosure are not limited thereto.

[0615] According to embodiments of the present disclosure, the plate 170 can be coupled or connected to the rear surface of the display panel 100 via a plate connecting member (or a fourth connecting member) 190.

[0616] The plate connecting member 190 according to embodiments of the present disclosure may include a material comprising an adhesive layer having good adhesion or bonding force with respect to the rear surfaces of the display panel 100 and the vibration device 200, respectively. For example, the plate connecting member 190 may include a foam pad, double-sided tape, double-sided foam pad, double-sided foam strip, or adhesive, but embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the plate connecting member 190 may include epoxy-based, acrylic-based, silicone-based, or polyurethane-based materials, but embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the plate connecting member 190 may be the same as the adhesive layer of the connecting member 150, but embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the plate connecting member 190 may include an acrylic material, which has relatively better adhesion and hardness than polyurethane, so that the vibration of the vibration device 200 can be well transmitted to the display panel 100 or the vibrating object. As another embodiment of the present disclosure, the adhesive layer of the plate connecting member 190 may be different from the adhesive layer of the connecting member 150.

[0617] The vibration device 200 can be connected or attached to the rear surface of the plate 170 via the aforementioned connecting member 150, and can therefore be supported or suspended on the rear surface of the plate 170.

[0618] According to embodiments of the present disclosure, the plate 170 can be connected or coupled to the front surface of the vibration device 200 via the aforementioned connecting member 150. For example, the plate 170 can be disposed at the uppermost vibration generator among the plurality of vibration generators 210 and 230. For example, the plate 170 can be connected or coupled to the uppermost vibration generator among the plurality of vibration generators 210 and 230 of the vibration device 200 via the connecting member 150. For example, when the vibration device 200 includes a first vibration generator 210 and a second vibration generator 230, the plate 170 can be connected or coupled to the first surface of the second vibration generator 230 or the second surface of the first vibration generator 210 via the connecting member 150. According to embodiments of the present disclosure, the plate 170 can be integrated into the vibration device 200, or can be configured as a component of the vibration device 200. For example, the plate 170 and the vibration device 200 can be configured as a single structure or a single component (or module), which are integrated as a single unit. Therefore, when the plate 170 is disposed between the rear surface of the display panel 100 and the vibration device 200, the assembly process between the display panel 100 and the vibration device 200 can be easily performed based on the component integration (or modularization) between the plate 170 and the vibration device 200.

[0619] When the plate 170 and the vibration device 200 according to embodiments of the present disclosure are configured as a structure or as an integral component (or module), the vibration object can be configured as a vibration plate. The plate 170 and the vibration device 200 can be disposed at a non-display panel location. The plate 170 and the vibration device 200 can be connected or coupled to each other via connecting member 150. For example, the vibration object may include a display panel containing pixels configured to display images, or it may include a non-display panel. For example, the vibration object may include a display panel containing pixels configured to display images, or it may be one or more of the following: wood, plastic, glass, cloth, paper, leather, vehicle interior materials, vehicle windows, building interior ceilings, building windows, building interior materials, aircraft interior materials, aircraft windows, etc., but embodiments of the present disclosure are not limited thereto. For example, the vibrating object may include one or more of the following: a display panel including pixels configured to display images, a screen panel projecting images from a display device onto it, a lighting panel, a sign panel, vehicle interior materials, vehicle windows, vehicle exterior materials, building ceiling materials, building interior materials, building windows, aircraft interior materials, aircraft windows, and reflectors, but embodiments of this disclosure are not limited thereto. For example, a non-display panel may be a light-emitting diode lighting panel (or device), an organic light-emitting lighting panel (or device), an inorganic light-emitting lighting panel (or device), etc., but embodiments of this disclosure are not limited thereto. For example, the vibrating object may include a display panel containing pixels configured to display images, or it may be a light-emitting diode lighting panel (or device), an organic light-emitting lighting panel (or device), an inorganic light-emitting lighting panel (or device), but embodiments of this disclosure are not limited thereto.

[0620] According to embodiments of this disclosure, the plate 170 and the vibration device 200 can be disposed at a location other than the display panel. The plate 170 can be connected to or attached to a module (or structure) of the vibration device 200 via a connecting member 150. Therefore, the plate 170 and the module (or structure) of the vibration device 200 can cause the non-display panel to vibrate to achieve sound and / or tactile feedback.

[0621] According to another embodiment of this disclosure, when the plate 170 and the vibration device 200 are configured as a single structure or as an integral component (or module), the plate 170 can be implemented as a vibrating object (or vibrating plate). Therefore, acoustic and / or tactile feedback can be achieved based on the vibration of the plate 170. For example, in the structure (or structure) of the plate 170 and the vibration device 200, the plate 170 may comprise one or more materials selected from stainless steel, aluminum (Al), magnesium (Mg), Mg alloys, Mg-Li alloys, and Al alloys, but embodiments of this disclosure are not limited thereto. For example, in the module (or structure) of the plate 170 and the vibration device 200, the plate 170 may comprise one or more single non-metallic materials or composite non-metallic materials selected from wood, plastic, glass, cloth, paper, and leather.

[0622] Therefore, in another embodiment of the device according to this disclosure, as referred to above... Figures 2 to 16E The stacked structure of vibration generators 210 and 230 can increase or enhance the sound pressure level characteristics and bass-tone sound characteristics of the sound generated by the displacement of the display panel 100. Furthermore, in another embodiment of the device according to this disclosure, the resonant frequency of the vibration device 200 can be reduced by the plate 170, and the heat of the display panel 100 can be dissipated by the plate 170.

[0623] Figure 19 An apparatus according to another embodiment of the present disclosure is shown, and is along... Figure 1 Another cross-sectional view taken by line I-I' shown.

[0624] Reference Figure 19 The device according to another embodiment of the present disclosure may include a display panel 100 and a vibration device 200. The device according to another embodiment of the present disclosure may also include a pad member 700 between the display panel 100 and the vibration device 200.

[0625] The pad member 700 can be configured to reduce tilting of the vibrating device 200. For example, when the pad member 700 is provided, tilting can be reduced in the frequency range of 3 kHz to 4 kHz. Sounds in the 3 kHz to 4 kHz frequency range can affect sound production, and when tilting occurs at this frequency, sound output characteristics may be reduced due to unclear sound. Tilting can be a phenomenon where sound pressure level bounces in a specific frequency band. The pad member 700 may be referred to as a resonance control element, resonance controller, and resonance pad, but embodiments of this disclosure are not limited thereto.

[0626] The vibration device 200 can be fixed to the support member 300 via the pad member 700. For example, the center of the vibration device 200 can be fixed to the support member 300 via the pad member 700. Therefore, tilting phenomena in the frequency range of 3kHz to 4kHz can be further reduced.

[0627] For example, the second support member 330 may include a first metal layer, a core layer, and a second metal layer. The first and second metal layers may include materials with high thermal conductivity or high thermal conductivity. For example, the first and second metal layers may include aluminum (Al), but embodiments of this disclosure are not limited thereto. A core layer may be disposed between the first and second metal layers. The core layer may include a plastic material. For example, the core layer may include polyethylene and polypropylene, but embodiments of this disclosure are not limited thereto. As another example, the core layer may include a mixture of magnesium hydroxide (Mg(OH)2), ethylene vinyl acetate, and polyethylene, etc. Adhesive layers are disposed between the first metal layer and the core layer, and between the second metal layer and the core layer, respectively. The adhesive layers may include adhesives, hot melt adhesives, or double-sided tape, but embodiments of this disclosure are not limited thereto. When the second support member 330 includes a first metal layer, a core layer, and a second metal layer, the first support member 310 may be omitted, thereby further reducing the thickness of the device or display device.

[0628] The thickness of the pad member 700 can be configured such that the pad member 700 can contact the thickness of the support member 300.

[0629] The pad member 700 can be configured to have a size less than or equal to that of the vibrating device 200. For example, the pad member 700 can overlap with the vibrating device 200. Therefore, the pad member 700 can be fixed between the vibrating device 200 and the support member 300, thereby reducing tilting caused by vibration through the vibrating device 200. For example, the pad member 700 can overlap with the vibrating device 200. For example, the pad member 700 can be configured to correspond to the center of the vibrating device 200. For example, the pad member 700 can have a size of 20mm × 20mm, but the embodiments of this disclosure are not limited thereto. For example, the pad member 700 can have a quadrangular (or square) shape or a rectangular shape, but the embodiments of this disclosure are not limited thereto.

[0630] The pad component 700 may include a material for absorbing or modulating vibrations. For example, the pad component 700 may include one or more materials selected from silicone polymers, polyolefins, paraffin wax, and acrylic polymers, but embodiments of this disclosure are not limited thereto.

[0631] For example, an adhesive may be further disposed between the pad member 700 and the vibration device 200. For example, an adhesive may be further disposed between the pad member 700 and the support member 300. The pad member 700 may be disposed between the vibration device 200 and the support member 300 using an adhesive. For example, the adhesive may include single-sided tape, single-sided foam tape, double-sided tape, double-sided foam pad, double-sided foam tape, etc., but the embodiments of this disclosure are not limited thereto. As another embodiment of this disclosure, the pad member 700 may include an adhesive. For example, when the pad member 700 includes an adhesive, the adhesive may not be disposed therein. When the pad member 700 comprises a silicone-based material, the adhesive may not be disposed therein.

[0632] For example, the pad member 700 can be formed of the same material as the vibration device 200. When the pad member 700 is made of the same material as the vibration device 200, the level of the signal applied to the pad member 700 can be adjusted, and therefore, the resonance of the vibration device 200 can be easily adjusted.

[0633] For example, multiple second parts can be disposed around the periphery of the vibration device 200. A pad member 700 disposed at a position corresponding to the vibration device 200 can be disposed at a position corresponding to multiple first parts. For example, the pad member 700 can be configured to correspond to multiple first parts instead of multiple second parts. For example, the ends of the pad member 700 can be configured to correspond to multiple first parts.

[0634] Figure 20 A vibration device according to another embodiment of the present disclosure is shown. Figure 21 It is along Figure 20 The cross-sectional view shown is taken from line VI-VI'. Figure 20 and Figure 21 It shows how by Figures 2 to 4 The embodiments of this disclosure are implemented by adding a spacer component. Therefore, in the following text, descriptions of elements other than the spacer component will be omitted or will be briefly given below. Furthermore, the description of the spacer component can be consistent with the above-mentioned references. Figure 19 Descriptions that are identical or similar are therefore omitted or will be briefly given below.

[0635] Reference Figure 20 and Figure 21According to another embodiment of this disclosure, the vibration device 200 may include a plurality of vibration generators (e.g., a first vibration generator and a second vibration generator) 210 and 230, and an adhesive member 250. The first vibration generator 210 may be connected to or disposed on the rear surface of the display panel 100 via a connecting member 150 (or a second connecting member). The second vibration generator 230 may be connected to or disposed on the first vibration generator 210 via the adhesive member 250 (or the first connecting member).

[0636] Each of the first vibration generator 210 and the second vibration generator 230 may include a vibration structure 211, a first protective member 213, and a second protective member 215. For example, the vibration structure 211 may include a vibration portion 211a, a first electrode portion 211b disposed on a first surface of the vibration portion 211a, and a second electrode portion 211c disposed on a second surface of the vibration portion 211a that is opposite to or different from the first surface. For example, the vibration portion 211a may include a piezoelectric material.

[0637] In the first vibration generator 210, a first adhesive layer 212 may be disposed between the vibration structure 211 and the first protective member 213. For example, the first adhesive layer 212 may be disposed between the first electrode portion 211b of the vibration structure 211 and the first protective member 213. In the first vibration generator 210, a second adhesive layer 214 may be disposed between the vibration structure 211 and the second protective member 215. For example, the second adhesive layer 214 may be disposed between the second electrode portion 211c of the vibration structure 211 and the second protective member 215.

[0638] In the second vibration generator 230, a first adhesive layer 212 may be disposed between the vibration structure 211 and the first protective member 213. For example, the first adhesive layer 212 may be disposed between the first electrode portion 211b of the vibration structure 211 and the first protective member 213. In the second vibration generator 230, a second adhesive layer 214 may be disposed between the vibration structure 211 and the second protective member 215. For example, the second adhesive layer 214 may be disposed between the second electrode portion 211c of the vibration structure 211 and the second protective member 215.

[0639] The pad member 700 may be further disposed below the plurality of vibration generators (e.g., a first vibration generator and a second vibration generator) 210 and 230. For example, the pad member 700 may be further disposed below the second vibration generator 230 of the plurality of vibration generators 210 and 230. For example, the pad member 700 may be disposed between the plurality of vibration generators 210 and 230 and the support member 300. For example, the pad member 700 may overlap with the plurality of vibration generators 210 and 230. For example, the pad member 700 may overlap with the vibration structure 211.

[0640] The size of the pad member 700 can be configured to be smaller than or equal to that of the vibration device 200. For example, the size of the pad member 700 can be configured to be smaller than or equal to each of the plurality of vibration generators 210 and 230.

[0641] The device according to another embodiment of this disclosure may further include a plate. For example, as referred to above... Figure 17 The device according to another embodiment of the present disclosure may further include a plate between the display panel and the vibration device. For example, the device according to another embodiment of the present disclosure may further include a plate between the display panel and the first vibration generator 210.

[0642] In another embodiment of the device according to this disclosure, the pad member may be further provided in the vibration device, thereby providing a device with enhanced sound pressure level characteristics.

[0643] Figure 22 A vibration device according to another embodiment of the present disclosure is shown. Figure 23 It is along Figure 22 The cross-sectional view taken by line VII-VII' shown. Figure 22 and Figure 23 This illustrates how to add pad block components to the reference above. Figures 10 to 12C The embodiments of this disclosure are implemented using the described vibration device. Therefore, in the following text, descriptions of elements other than the pad member will be omitted or will be briefly given below. Furthermore, the description of the pad member can be consistent with the above-described references. Figure 19 Descriptions that are identical or similar are therefore omitted or will be briefly given below.

[0644] Reference Figures 22 to 23 In another embodiment of the vibration device 200 according to the present disclosure, the vibration structure 211 of each of the first vibration generator 210 and the second vibration generator 230 may include a vibration portion 211a, a first electrode portion 211b, and a second electrode portion 211c. For example, the vibration portion 211a may include a piezoelectric material. The vibration portion 211a may include a plurality of first portions 211a1 and a plurality of second portions 211a2.

[0645] The pad member 700 may be disposed at the lowest vibration generator among a plurality of vibration generators. For example, the pad member 700 may be disposed at the second vibration generator 230. The pad member 700 may be further disposed at the center of the vibration device 200. For example, the pad member 700 may be disposed at the center of the first vibration generator 210 and the center of the second vibration generator 230. For example, the pad member 700 may overlap with the plurality of vibration generators 210 and 230. For example, the pad member 700 may overlap with the vibration structure 211. For example, the pad member 700 may be disposed entirely above the plurality of first portions 211a1 rather than above the plurality of second portions 211a2. For example, the pad member 700 may be disposed entirely above the plurality of first portions 211a1. For example, the ends of the pad member 700 may correspond to the plurality of first portions 211a1. Because the pad member 700 is disposed at the plurality of first portions 211a1 rather than the plurality of second portions 211a2, the fixing force of the vibration device 200 can be further enhanced. Therefore, the tilting phenomenon can be further enhanced based on the vibration of the vibration device 200.

[0646] Figure 24 A vibration device according to another embodiment of the present disclosure is shown. Figure 25 It is along Figure 24 The cross-sectional view taken by line VIII-VIII' shown. Figure 24 and Figure 25 This illustrates how to add pad block components to the reference above. Figures 15 to 16E The embodiments of this disclosure are implemented using the described vibration device. Therefore, in the following text, descriptions of elements other than the pad member will be omitted or will be briefly given below. Furthermore, the description of the pad member can be consistent with the above-described references. Figure 19 Descriptions that are identical or similar are therefore omitted or will be briefly given below.

[0647] Reference Figure 24 and Figure 25 In another embodiment of the vibration device 200 according to the present disclosure, each of the first vibration generator 210 and the second vibration generator 230 may include at least one or more vibration structures 200A to 200D or multiple vibration structures 200A to 200D. Figure 24 and Figure 25 The example shown is an example of setting four vibration structures, and each of the first vibration generator 210 and the second vibration generator 230 according to the embodiments of the present disclosure may be configured with one or two or more vibration structures.

[0648] Each of the first vibration generator 210 and the second vibration generator 230 according to another embodiment of the present disclosure may include a first vibration structure 200A to a fourth vibration structure 200D. For example, the first vibration structure 200A to the fourth vibration structure 200D may be electrically disconnected from each other and may be separated from each other in a first direction X and a second direction Y. The first vibration structure 210A and the second vibration structure 210B may be separated from each other in the first direction X. The third vibration structure 210C and the fourth vibration structure 210D may be separated from each other in the first direction X. For example, each of the first vibration structure 200A to the fourth vibration structure 200D may include a vibration portion 211a, a first electrode portion 211b, and a second electrode portion 211c. For example, the vibration portion 211a may include a piezoelectric material. Each of the first vibration generator 210 and the second vibration generator 230 may also include a first protective member 213 and a second protective member 215.

[0649] For example, the vibration portion 211a in each of the first vibration generator 210 and the second vibration generator 230 may include a plurality of first portions 211a1 and a second portion 211a2 disposed between the plurality of first portions 211a1.

[0650] The vibration device according to another embodiment of this disclosure may further include a pad member. The pad member may be disposed at the lowermost vibration generator among the plurality of vibration generators 210 and 230. For example, the pad member may be disposed at the second vibration generator 230. For example, the pad member may be disposed at each of the plurality of vibration structures included in the plurality of vibration generators 210 and 230. For example, the pad member may be disposed on each of the plurality of vibration structures included in the plurality of vibration generators 210 and 230. For example, the pad member 700 may overlap with the plurality of vibration generators 210 and 230. For example, the pad member 700 may overlap with the vibration structure 211.

[0651] The first pad member 701 may be disposed at the first vibration structure 200A. For example, the first pad member 701 may be disposed at the first vibration structure 200A of each of the first vibration generator 210 and the second vibration generator 230. The first pad member 701 may be disposed at the center of the first vibration structure 200A. For example, the first pad member 701 may be disposed at a plurality of first portions 211a1 of the vibration structure 211 of the first vibration structure 200A. For example, the first pad member 701 may be disposed over the entire plurality of first portions 211a1. For example, the first pad member 701 may be disposed over the entire plurality of first portions 211a1, rather than on a plurality of second portions 211a2. For example, the ends of the first pad member 701 may correspond to the plurality of first portions 211a1.

[0652] For example, the second pad member 702 may be disposed at the second vibration structure 200B. For example, the second pad member 702 may be disposed at the second vibration structure 200B of each of the first vibration generator 210 and the second vibration generator 230. The second pad member 702 may be disposed at the center of the second vibration structure 200B. For example, the second pad member 702 may be disposed at a plurality of first portions 211a1 of the vibration structure 211 of the second vibration structure 200B. For example, the second pad member 702 may be disposed over the entire plurality of first portions 211a1. For example, the second pad member 702 may be disposed over the entire plurality of first portions 211a1, rather than on a plurality of second portions 211a2. For example, the ends of the second pad member 702 may correspond to the plurality of first portions 211a1.

[0653] For example, a third pad member 703 may be disposed at a third vibration structure 200C. For example, the third pad member 703 may be disposed at the third vibration structure 200C of each of the first vibration generator 210 and the second vibration generator 230. The third pad member 703 may be disposed at the center of the third vibration structure 200C. For example, the third pad member 703 may be disposed at a plurality of first portions 211a1 of the vibration structure 211 of the third vibration structure 200C. For example, a fourth pad member 704 may be disposed at a fourth vibration structure 200D of each of the first vibration generator 210 and the second vibration generator 230. The fourth pad member 704 may be disposed at the center of the fourth vibration structure 200D. For example, the fourth pad member 704 may be disposed at a plurality of first portions 211a1 of the vibration structure 211 of the fourth vibration structure 200D. For example, the third pad member 703 and the fourth pad member 704 may be disposed over the entire plurality of first portions 211a1. For example, the third pad member 703 and the fourth pad member 704 may be disposed over the entirety of the plurality of first portions 211a1 rather than over the plurality of second portions 211a2. For example, the ends of the third pad member 703 and the fourth pad member 704 may correspond to the plurality of first portions 211a1. According to embodiments of the present disclosure, the pad members may be disposed at each of the first vibration structures 200A to the fourth vibration structures 200D, so that each of the first vibration structures 200A to the fourth vibration structures 200D may have the effect of being fixed to the support member 300, thereby reducing the tilting phenomenon that occurs when each of the first vibration structures 200A to the fourth vibration structures 200D moves to its free end. Therefore, because the pad members are disposed in each of the first vibration structures 200A to the fourth vibration structures 200D, a device with enhanced sound characteristics and / or enhanced sound pressure level characteristics can be provided, thereby providing a clearer sound.

[0654] Figure 26 A vibration device according to another embodiment of the present disclosure is shown. Figure 27 It is along Figure 26 The cross-sectional view shown is taken from line IX-IX'. Figure 26 and Figure 27 It shows how to modify it differently Figure 25 and Figure 26 The embodiments of this disclosure are implemented using the pad member shown in the figure. Therefore, in the following text, descriptions of elements other than the pad member will be omitted or will be briefly given below. Furthermore, the description of the pad member can be compared with the above-mentioned references. Figure 19 Descriptions that are identical or similar are therefore omitted or will be briefly given below.

[0655] Reference Figure 26 and Figure 27 In another embodiment of the vibration device 200 according to the present disclosure, each of the first vibration generator 210 and the second vibration generator 230 may include at least one or more vibration structures 200A to 200D or multiple vibration structures 200A to 200D. Figure 26 and Figure 27 The example shown is an example of setting four vibration structures, and each of the first vibration generator 210 and the second vibration generator 230 according to the embodiments of the present disclosure may be configured with one or two or more vibration structures.

[0656] The pad member 705 may be disposed at the lowest vibration generator among the plurality of vibration generators 210 and 230. For example, the pad member 705 may be disposed at the second vibration generator 230. For example, the pad member 705 may be disposed between a plurality of vibration structures included in the plurality of vibration generators 210 and 230.

[0657] The pad member 705 may be disposed between the first vibration structure 200A and the fourth vibration structure 200D. For example, the pad member 705 may be disposed at the boundary between the first vibration structure 200A and the fourth vibration structure 200D.

[0658] The size of the pad member 705 can be greater than or equal to the boundary region between the first vibration structure 200A and the fourth vibration structure 200D. For example, the size of the pad member 705 can be greater than or equal to the interval D1 between the first vibration structure 200A and the second vibration structure 200B.

[0659] For example, the size of the pad member 705 can vary in the arrangement direction of the plurality of first portions 211a1 and the plurality of second portions 211a2 of the vibrating structure 211. For example, as Figure 26As shown, when the arrangement direction of the plurality of first portions 211a1 and the plurality of second portions 211a2 is the width direction, the size D4 of the pad member 705 in the width direction can be adjusted to be larger, and the size D3 of the pad member 705 in the length direction can be adjusted to be smaller than the size D4. As another embodiment of this disclosure, when the arrangement direction of the plurality of first portions 211a1 and the plurality of second portions 211a2 is the length direction, the size D4 of the pad member 705 in the width direction can be adjusted to be smaller, and the size D3 of the pad member 705 in the length direction can be adjusted to be larger than the size D4.

[0660] According to another embodiment of this disclosure, Figure 24 The pad component 705 and the first pad component 701 to the fourth pad component 704 can be set together.

[0661] In another embodiment of the device according to this disclosure, because a pad member is provided, the tilt of sound pressure level bounce or sound quality degradation in a certain frequency band can be reduced, and thus the flatness of sound pressure level can be enhanced, thereby providing a device in which sound pressure level and / or sound is enhanced in the mid-tone band.

[0662] Figure 28 A vibration device 200 according to another embodiment of the present disclosure is shown. Figure 29 It is along Figure 28 The cross-sectional view shown is taken by line X-X'. Figure 28 and Figure 29 It shows in Figure 24 and Figure 25 The present disclosure further provides embodiments of the padding member. Therefore, descriptions of elements other than the padding member are omitted or will be briefly given below. Furthermore, the description of the padding member can be compared with the above-mentioned references. Figure 19 The descriptions given are the same, so they are omitted or will be briefly given below.

[0663] Reference Figure 28 and Figure 29 In another embodiment of the vibration device 200 according to the present disclosure, each of the first vibration generator 210 and the second vibration generator 230 may include at least one or more vibration structures 200A to 200D or multiple vibration structures 200A to 200D. Figure 28 and Figure 29 The example shown is an example of setting four vibration structures, and each of the first vibration generator 210 and the second vibration generator 230 according to the embodiments of the present disclosure may be configured with one or two or more vibration structures.

[0664] A pad member can be disposed at the lowest vibration generator among the plurality of vibration generators 210 and 230. For example, a pad member can be disposed at the second vibration generator 230. For example, a pad member can be disposed at each of the plurality of vibration structures 200A to 200D included in the plurality of vibration generators 210 and 230. A pad member can be disposed at the center of each of the plurality of vibration structures 200A to 200D in vibration generator 210. For example, a pad member can be disposed above each of the plurality of vibration structures 200A to 200D included in the plurality of vibration generators 210 and 230. For example, a pad member can overlap with the plurality of vibration generators 210 and 230. For example, a pad member can overlap with a vibration structure. For example, a single vibration generator can be configured, and a pad member can be configured. For example, a first pad member 1701 can be disposed at the center of the first vibration structure 200A. For example, a second pad member 1702 can be disposed at the center of the second vibration structure 200B. For example, the third pad member 1703 may be located at the center of the third vibration structure 200C. For example, the fourth pad member 1704 may be located at the center of the fourth vibration structure 200D.

[0665] The device according to another embodiment of this disclosure may further include a fifth pad member 1705. For example, the fifth pad member 1705 may be disposed at the center of each of the first vibration structures 200A to the fourth vibration structures 200D. For example, the fifth pad member 1705 may be disposed at the center of a plurality of vibration generators 210 and 230. The fifth pad member 1705 may be disposed at the boundary of at least two or more vibration portions or at least two or more vibration structures, and at a portion of at least two or more vibration portions or at least two or more vibration structures. For example, the fifth pad member 1705 may be disposed at the boundary between at least two or more of the first vibration structures 200A and the second vibration structures 200B, and at a portion of at least two or more of the first vibration structures 200A and the second vibration structures 200B. For example, the fifth pad member 1705 may be disposed at the boundary between at least two or more of the third vibration structures 200C and the fourth vibration structures 200D, and at a portion of at least two or more of the third vibration structures 200C and the fourth vibration structures 200D. For example, the fifth pad member 1705 may be disposed at the boundary between the first vibration structure 200A and the fourth vibration structure 200D, and in a portion of each of the first vibration structure 200A and the fourth vibration structure 200D. The fifth pad member 1705 may be disposed between adjacent pad members disposed at each of at least two or more vibration parts or vibration structures. For example, the fifth pad member 1705 may be disposed between the first pad member 1701 disposed at the first vibration structure 200A and the second pad member 1702 disposed at the second vibration structure 200B. For example, the fifth pad member 1705 may be disposed between the third pad member 1703 disposed at the third vibration structure 200C and the fourth pad member 1704 disposed at the fourth vibration structure 200D. For example, the fifth pad member 1705 may be disposed between the first pad member ...

Claims

1. A vibration generating device, the vibration generating device comprising: Display panel, the display panel being configured to display images; A vibration device disposed on the rear surface of the display panel and configured to cause the display panel to vibrate; A support member located on the rear surface of the display panel; as well as A pad component is disposed between the vibration device and the support component. The pad member does not extend beyond the edge of the vibration device in a direction parallel to the front surface of the display panel. The pad member is configured to overlap with the center of the vibration device, and the size of the pad member is smaller than or equal to the size of the vibration device to reduce tilting in a specific frequency band. The pad component is in contact with the vibration equipment, and The pad component comprises one or more materials selected from silicone-based polymers, polyolefins, paraffin wax, and acrylic polymers.

2. The vibration generating device according to claim 1, wherein the vibration generating device further comprises a connecting member disposed between the display panel and the vibration device.

3. The vibration generating device according to claim 1, wherein the vibration generating device further comprises a plate between the display panel and the vibration device.

4. The vibration generating device according to claim 1, wherein, The vibration device includes multiple vibration generators; and Each of the plurality of vibration generators is configured to vibrate in the same direction.

5. The vibration generation apparatus according to claim 4, wherein The vibration device also includes an adhesive component located between the plurality of vibration generators.

6. The vibration generation apparatus according to claim 4, wherein Each of the plurality of vibration generators is configured to vibrate in the same direction.

7. The vibration generation apparatus according to claim 4, wherein Each of the plurality of vibration generators is the same size, and the plurality of vibration generators completely overlap each other in a plan view.

8. The vibration generation apparatus according to claim 4, wherein The end of each of the plurality of vibration generators is aligned in a direction perpendicular to the front surface of the display panel.

9. The vibration generating device according to claim 4, wherein, Each of the plurality of vibration generators includes a plurality of vibration structures arranged along a first direction and a second direction intersecting the first direction.

10. The vibration generating device according to claim 4, wherein, Each of the plurality of vibration generators includes a plurality of vibration structures; and The pad component is disposed between the plurality of vibrating structures.

11. The vibration generating device according to claim 4, wherein, Each of the plurality of vibration generators includes a plurality of vibration structures; and The pad component is disposed at each of the plurality of vibrating structures.

12. The vibration generating device according to claim 4, wherein, Each of the plurality of vibration generators includes a plurality of vibration structures; and The pad members are disposed on each of the plurality of vibration structures and between adjacent pad members disposed at each of the plurality of vibration structures.

13. The vibration generating device according to claim 4, wherein, Each of the plurality of vibration generators includes a plurality of vibration structures; and The pad component overlaps with at least one of the plurality of vibrating structures.

14. The vibration generating device according to claim 4, wherein, Each of the plurality of vibration generators includes a plurality of vibration structures; The pad block components are configured in multiple ways; and One of the pad components overlaps with at least two or more of the plurality of vibrating structures.

15. The vibration generating device according to claim 4, wherein, Each of the plurality of vibration generators includes a plurality of vibration structures; and The pad component is positioned adjacent to the plurality of vibration structures.

16. The vibration generating device according to claim 4, wherein, Each of the plurality of vibration generators includes a plurality of vibration structures; and The pad component overlaps with two adjacent vibration structures.

17. The vibration generating device according to claim 1, wherein, The vibration device includes at least two or more vibration structures; and The pad component is disposed between the at least two or more vibrating structures.

18. The vibration generating device according to claim 1, wherein, The vibration device includes multiple vibration structures; and The pad block component is disposed at each of the plurality of vibration structures and between adjacent pad block components disposed at each of the plurality of vibration structures.

19. The vibration generating device according to claim 1, wherein, The vibration device includes at least two or more vibration structures; and The pad component is disposed at each of the at least two or more vibrating structures.

20. The vibration generating device according to claim 1, wherein, The vibration device includes at least two or more vibration structures; and The pad block member is disposed at each of the at least two or more vibration structures, and is disposed between adjacent pad block members disposed at each of the at least two or more vibration structures.

21. The vibration generating device according to any one of claims 1 to 8, wherein, The vibration device includes: Vibrating structure; A first protective member is disposed on a first surface of the vibrating structure; and The second protective member is disposed on a second surface of the vibrating structure that is different from the first surface.

22. The vibration generating device according to claim 21, wherein, The vibration device also includes: A first adhesive layer is disposed between the vibrating structure and the first protective member; and A second adhesive layer is disposed between the vibrating structure and the second protective member.

23. The vibration generating device according to claim 21, wherein, The vibrating structure includes: Vibrating part; A first electrode portion, wherein the first electrode portion is disposed between the vibrating portion and the first protective member; and The second electrode portion is disposed between the vibrating portion and the second protective member.

24. The vibration generating device according to claim 23, wherein, The vibrating part includes a plurality of first parts and a second part disposed between the plurality of first parts.

25. A vibration generating device, the vibration generating device comprising: Display panel, the display panel being configured to display images; A vibration device, the vibration device being located on the rear surface of the display panel; A plate, located between the display panel and the vibration device; A support member is disposed on the rear surface of the display panel; as well as A pad component is disposed between the vibrating device and the supporting component. The pad member does not extend beyond the edge of the vibration device in a direction parallel to the front surface of the display panel. The pad member is configured to overlap with the center of the vibration device, and the size of the pad member is smaller than or equal to the size of the vibration device to reduce tilting in a specific frequency band. The pad component is in contact with the vibration equipment, and The pad component comprises one or more materials selected from silicone-based polymers, polyolefins, paraffin wax, and acrylic polymers.

26. The vibration generating device according to claim 25, further comprising a connecting member disposed between the display panel and the vibration device.

27. The vibration generating device according to claim 25, wherein, The display panel includes a first area and a second area; and The vibration device includes a first vibration device disposed in the first region and a second vibration device disposed in the second region.

28. The vibration generating device according to claim 27, further comprising a separator disposed between the rear surface of the display panel and the support member, and between the first region and the second region.

29. The vibration generating device according to claim 27, wherein, The pad component is disposed at each of the first vibrating device and the second vibrating device.

30. The vibration generating device according to claim 27, wherein, The vibration device also includes: A third vibration device, wherein the third vibration device is disposed in the first region; and A fourth vibration device is disposed in the second region.

31. The vibration generating device according to claim 30, wherein, The first vibrating device and the third vibrating device are arranged parallel to or staggered with each other in the first region; and The second and fourth vibrating devices are arranged parallel to or staggered to each other in the second region.

32. The vibration generating device according to claim 30, wherein, The pad component is disposed at each of the third and fourth vibrating devices.

33. The vibration generating device according to any one of claims 25 to 32, wherein, The vibration device includes: Vibrating structure; A first protective member is disposed on a first surface of the vibrating structure; and The second protective member is disposed on a second surface of the vibrating structure that is different from the first surface.

34. The vibration generating device according to claim 33, wherein, The vibration device also includes: A first adhesive layer is disposed between the vibrating structure and the first protective member; and A second adhesive layer is disposed between the vibrating structure and the second protective member.

35. The vibration generating device according to claim 33, further comprising: A first vibration drive line, configured to transmit a first vibration drive signal to the vibration structure; as well as A second vibration drive line is configured to transmit a second vibration drive signal to the vibration structure.

36. The vibration generating device according to claim 33, wherein, The vibrating structure includes: Vibrating part; A first electrode portion, wherein the first electrode portion is disposed between the vibrating portion and the first protective member; and The second electrode portion is disposed between the vibrating portion and the second protective member.

37. The vibration generating device according to claim 36, wherein, The vibrating part includes a plurality of first parts and a second part disposed between the plurality of first parts.

38. The vibration generating device according to claim 36, further comprising: A first power line is connected to one of the first electrode portion and the second electrode portion; as well as A second power line is connected to the other of the first electrode portion and the second electrode portion, and is spaced apart from the first power line in a plane parallel to the front and rear surfaces of the display panel.

39. The vibration generating device according to claim 27, wherein, Each of the first vibrating device and the second vibrating device includes: Multiple vibration generators; and An adhesive component is located between the plurality of vibration generators.

40. The vibration generating device according to claim 27, in, The vibration device also includes: A third vibration device, wherein the third vibration device is disposed in the first region; and A fourth vibration device is disposed in the second region, and Each of the third vibration device and the fourth vibration device includes: Multiple vibration generators; and An adhesive component is located between the plurality of vibration generators.

41. The vibration generating device according to claim 39 or 40, wherein, Each of the plurality of vibration generators includes: The vibrating part comprises a plurality of inorganic material parts having piezoelectric properties and an organic material part located between the plurality of inorganic material parts; A first electrode portion, wherein the first electrode portion is disposed on a first surface of the vibrating portion; and The second electrode portion is disposed on a second surface of the vibrating portion that is different from the first surface.

42. The vibration generating device according to claim 41, further comprising a first power line and a second power line, the first power line being connected to the first electrode portion and the second power line being connected to the second electrode portion. in, The second power line is spaced apart from the first power line in a plane parallel to the front and rear surfaces of the display panel.

43. The vibration generating device according to claim 41, wherein, Some of the plurality of vibration generators overlap in a direction perpendicular to the front surface of the display panel; The inorganic material portion of the vibration generator positioned closer to the front surface of the display panel overlaps with the inorganic material portion of another vibration generator positioned less close to the front surface of the display panel; and / or The organic material portion of the vibration generator positioned closer to the front surface of the display panel overlaps with the organic material portion of the other vibration generator positioned less close to the front surface of the display panel.

44. The vibration generating device according to claim 41, further comprising a first power line and a second power line. in, Some of the plurality of vibration generators overlap in a direction perpendicular to the front surface of the display panel. Specifically, a first electrode portion positioned closer to the front surface of the display panel and a first electrode portion positioned less close to the front surface of the display panel are connected to the first power line, and The second electrode portion, which is positioned closer to the front surface of the display panel, and the second electrode portion, which is positioned less close to the front surface of the display panel, are connected to the second power line.

45. The vibration generating device according to claim 39 or 40, wherein, The adhesive component includes a first adhesive layer and a second adhesive layer, and each of the plurality of vibration generators includes: Multiple vibration structures are arranged along a first direction and a second direction intersecting the first direction; A first protective member, wherein the first protective member is disposed on a first surface of each of the plurality of vibrating structures via the first adhesive layer; and The second protective member is disposed on the second surface of each of the plurality of vibrating structures via the second adhesive layer.

46. ​​The vibration generating device according to claim 45, wherein, The plurality of vibrating structures are arranged at intervals of 0.1 mm or greater but less than 5 mm.

47. The vibration generating device according to claim 45, further comprising: A first vibration drive line, configured to transmit a first vibration drive signal to the plurality of vibration structures; as well as A second vibration drive line is configured to transmit a second vibration drive signal to the plurality of vibration structures.

48. The vibration generating device according to claim 45, wherein, The pad component is disposed between the plurality of vibration structures included in each of the plurality of vibration generators.

49. The vibration generating device according to claim 45, wherein, The pad component is disposed at the plurality of vibration structures included in each of the plurality of vibration generators.

50. The vibration generating device according to claim 45, wherein, The pad members are disposed at each of the plurality of vibration structures included in each of the plurality of vibration generators and between adjacent pad members disposed on each of the plurality of vibration structures.

51. The vibration generating device according to claim 25, wherein, The vibration device also includes multiple vibration structures; and The pad component is positioned adjacent to the plurality of vibration structures.

52. The vibration generating device according to claim 25, wherein, The vibration device also includes multiple vibration structures; and The pad component overlaps with two adjacent vibration structures.

53. The vibration generating device according to claim 25, wherein, The vibration device also includes multiple vibration structures; and The pad component overlaps with at least one of the plurality of vibrating structures.

54. The vibration generating device according to claim 25, wherein, The vibration device also includes multiple vibration structures; The pad block components are configured in multiple ways; and One of the pad components overlaps with at least two or more of the plurality of vibrating structures.

55. The vibration generating device according to claim 45, wherein, Each of the plurality of vibrating structures includes: Vibrating part; A first electrode portion, wherein the first electrode portion is disposed between the vibrating portion and the first protective member; and The second electrode portion is disposed between the vibrating portion and the second protective member.

56. The vibration generating device according to claim 55, wherein, The vibrating component includes: Multiple inorganic material components; and An organic material portion is located between the plurality of inorganic material portions.

57. The vibration generating device according to claim 45, in, Each of the plurality of vibration generators includes: Vibrating part; A first electrode portion, wherein the first electrode portion is disposed on a first surface of the vibrating portion; and The second electrode portion is disposed on a second surface of the vibrating portion that is different from the first surface, and In this configuration, the first electrode portion of each of the plurality of vibration generators is positioned closer to the display panel than the second electrode portion.

58. The vibration generating device according to claim 57, further comprising a vibration driving circuit, the vibration driving circuit including a plurality of amplifiers respectively connected to the plurality of vibration generators. in, The plurality of vibration generators includes a first group and a second group. The plurality of amplifiers includes a first amplifier group and a second amplifier group. The amplifier in the first amplifier group includes a first output terminal connected to a first electrode portion of the vibration generator of the first group and a second output terminal connected to a second electrode portion of the vibration generator of the first group. The amplifier in the second amplifier group includes a first output terminal connected to the second electrode portion of the vibration generator of the second group and a second output terminal connected to the first electrode portion of the vibration generator of the second group.

59. The vibration generating device according to claim 45, in, Each of the plurality of vibration generators includes: Vibrating part; A first electrode portion, wherein the first electrode portion is disposed on a first surface of the vibrating portion; and The second electrode portion is disposed on a second surface of the vibrating portion that is different from the first surface. The plurality of vibration generators include a first group and a second group. In the vibration generator of the first group, the first electrode portion is positioned closer to the display panel than the second electrode portion, and In the vibration generator of the second group, the second electrode portion is positioned closer to the display panel than the first electrode portion.

60. The vibration generating device according to claim 59, further comprising a vibration driving circuit, the vibration driving circuit including a plurality of amplifiers respectively connected to the plurality of vibration generators. in, Each of the plurality of amplifiers includes: A first output terminal, the first output terminal being connected to the first electrode portion of a respective vibration generator among the plurality of vibration generators; and The second output terminal is connected to the second electrode portion of the respective vibration generator among the plurality of vibration generators.

61. A vibration device, the vibration device comprising: Multiple vibration generators, which are stacked on top of each other and configured to vibrate in the same direction; An adhesive component is located between the plurality of vibration generators; as well as A pad component, located at the plurality of vibration generators. The pad member does not extend beyond the edges of the plurality of vibration generators in a direction parallel to the front surfaces of the plurality of vibration generators. The pad member is configured to overlap the center of the plurality of vibration generators, and the size of the pad member is smaller than or equal to the size of the plurality of vibration generators to reduce tilting in a specific frequency band. The pad component is in contact with the vibration equipment, and The pad component comprises one or more materials selected from silicone-based polymers, polyolefins, paraffin wax, and acrylic polymers.

62. The vibration device according to claim 61, wherein, Each of the plurality of vibration generators is configured to vibrate in the same direction and / or to have the same size.

63. The vibration device according to claim 61, wherein, The end of each of the plurality of vibration generators is aligned in a direction perpendicular to the front surface of the vibration generator.

64. The vibration device according to claim 61, further comprising: A plate, wherein the plate is disposed at the uppermost vibration generator among the plurality of vibration generators. The pad component is located at the lowest vibration generator among the plurality of vibration generators.

65. The vibration device according to claim 64, wherein, The plate and each of the plurality of vibration generators are of the same size.

66. The vibration device according to claim 61, further comprising: Another pad component is disposed between adjacent pad components located at the plurality of vibration generators.

67. The vibration device according to any one of claims 61 to 66, wherein, The pad component is configured to correspond centrally to the vibration device; and The pad component is configured to include a square shape with dimensions smaller than or equal to those of the vibration device.

68. The vibration device according to any one of claims 61 to 66, wherein, The end of the pad member is configured to overlap the vibration device in a direction perpendicular to the front surface of the display panel.

69. A vibration generating device, the vibration generating device comprising: Vibrating components; A vibration device, wherein the vibration device is located at the vibration component; as well as A pad component, located at the vibrating device. Wherein, the pad component does not extend beyond the edge of the vibrating device in a direction parallel to the front surface of the vibrating component. The pad member is configured to overlap with the center of the vibration device, and the size of the pad member is smaller than or equal to the size of the vibration device to reduce tilting in a specific frequency band. The pad component is in contact with the vibration equipment, and The pad component comprises one or more materials selected from silicone-based polymers, polyolefins, paraffin wax, and acrylic polymers.

70. The vibration generating device according to claim 69, wherein, The vibrating component includes a plate; and The board may be a metallic material, or a single non-metallic material or a composite non-metallic material selected from wood, plastic, glass, cloth, paper and leather.

71. The vibration generating device according to claim 70, wherein, Each of the vibrating components and the plates has the same size.

72. The vibration generating device according to claim 69, wherein, The vibration device includes multiple vibration generators stacked on top of each other and configured to vibrate in the same direction.

73. The vibration generating device according to claim 72, wherein, Each of the plurality of vibration generators further includes a plurality of vibration structures; and The pad component is disposed at each of the plurality of vibrating structures.

74. The vibration generating device according to claim 72, wherein, Each of the plurality of vibration generators further includes a plurality of vibration structures; and The pad component is disposed between the plurality of vibrating structures.

75. The vibration generating device according to claim 72, wherein, Each of the plurality of vibration generators further includes a plurality of vibration structures; and The pad members are disposed at each of the plurality of vibration structures and between adjacent pad members disposed at each of the plurality of vibration structures.

76. The vibration generating device according to claim 72, wherein, Each of the plurality of vibration generators further includes a plurality of vibration structures; and The pad component is located at each of the plurality of vibration structures included in the lowest vibration generator among the plurality of vibration generators.

77. The vibration generating device according to claim 72, wherein, Each of the plurality of vibration generators further includes a plurality of vibration structures; and The pad component is located between multiple vibration structures included in the lowest vibration generator among the plurality of vibration generators.

78. The vibration generating device according to claim 72, wherein, Each of the plurality of vibration generators further includes a plurality of vibration structures; and The pad component is located at each of the plurality of vibration structures included in the lowest vibration generator among the plurality of vibration generators, and is disposed at each of the plurality of vibration structures.

79. The vibration generating device according to claim 72, wherein, Each of the plurality of vibration generators further includes a plurality of vibration structures; and The pad component is positioned adjacent to the plurality of vibration structures.

80. The vibration generating device according to claim 69, wherein, The vibration device includes at least two or more vibration structures; and The pad component overlaps with the at least two or more vibrating structures.

81. The vibration generating device according to claim 69, wherein, The vibration device includes at least two or more vibration structures; and The pad members are disposed at each of the at least two or more vibrating structures and between adjacent pad members disposed at each of the at least two or more vibrating structures.

82. The vibration generating device according to claim 69, wherein, The vibration device includes at least two or more vibration structures; and The pad member overlaps with at least two or more of the plurality of vibration structures and is disposed between adjacent pad members disposed at at least two or more vibration structures.

83. The vibration generating device according to claim 69, wherein, The vibration device includes at least two or more vibration structures; and The pad component overlaps with the at least two or more vibrating structures.

84. The vibration generating device according to claim 69, wherein, The vibration device includes at least two or more vibration structures; The pad block components are configured in multiple ways; and One of the pad components overlaps with at least two or more of the vibration structures in the vibration structure.

85. The vibration generating device according to claim 69, wherein, The vibrating component includes a display panel comprising a plurality of pixels configured to display an image, or the vibrating component includes one or more non-display panels among a light-emitting diode illumination panel, an organic light-emitting illumination panel, and an inorganic light-emitting illumination panel.

86. The vibration generating device according to claim 69, wherein, The vibrating component includes one or more of the following: a screen panel, a lighting panel, a sign panel, vehicle interior materials, vehicle windows, vehicle exterior materials, building roof materials, building interior materials, building windows, aircraft interior materials, aircraft windows, and a reflector, on which an image is projected from a display device.

87. The vibration generating device according to any one of claims 72 to 79, wherein, Each of the plurality of vibration generators includes: The vibrating part comprises a plurality of inorganic material parts having piezoelectric properties and an organic material part located between the plurality of inorganic material parts; A first electrode portion, wherein the first electrode portion is disposed on a first surface of the vibrating portion; and The second electrode portion is disposed on a second surface of the vibrating portion that is different from the first surface.

88. The vibration generating device according to claim 87, further comprising a first power line and a second power line. in, Some of the plurality of vibration generators overlap in a direction perpendicular to the front surface of the vibration member. The first electrode portion of the vibration generator positioned close to the front surface of the vibrating member and the first electrode portion of the vibration generator positioned less close to the front surface of the vibrating member are connected to the first power line. The second electrode portion of the vibration generator, positioned close to the front surface of the vibrating member, and the second electrode portion of the vibration generator, positioned less close to the front surface of the vibrating member, are connected to the second power line.

89. The vibration generating device according to claim 88, wherein, The first power line connected to the first electrode portion of the vibration generator, which is positioned close to the front surface of the vibration member, does not overlap with the second power line connected to the second electrode portion of the vibration generator, which is positioned close to the front surface of the vibration member.

90. The vibration generating device according to claim 88, wherein, The first power line connected to the first electrode portion of the vibration generator, which is positioned not too close to the front surface of the vibrating member, does not overlap with the second power line connected to the second electrode portion of the vibration generator, which is positioned not too close to the front surface of the vibrating member.

91. The vibration generating device according to any one of claims 69 to 86, wherein, The vibration device includes: The vibrating part comprises a plurality of inorganic material parts having piezoelectric properties and an organic material part located between the plurality of inorganic material parts; A first electrode portion, wherein the first electrode portion is disposed on a first surface of the vibrating portion; and The second electrode portion is disposed on a second surface of the vibrating portion that is different from the first surface.

92. The vibration generating device according to claim 91, further comprising: A first power line is connected to the first electrode portion; as well as The second power line is connected to the second electrode portion. The second power line is spaced apart from the first power line in a plane parallel to the front and rear surfaces of the vibrating member.

93. The vibration generating device according to any one of claims 69 to 86, wherein, The vibration device includes: At least two or more vibrating structures; A first electrode portion located on a first surface of one of the at least two or more vibration structures and a second electrode portion located on a surface different from the first surface; A third electrode portion located on the first surface of another vibration structure among the at least two or more vibration structures, and a fourth electrode portion located on a surface different from the first surface; and A first power line connected to the first electrode portion and the second electrode portion, and a second power line connected to the second electrode portion and the fourth electrode portion.

94. The vibration generating device according to any one of claims 1 to 8, 25 to 32, 39, 40, 42 to 44, 46 to 48, 69 to 72, and 85 to 86, wherein, The pad component is configured to correspond centrally to the vibration device; and The pad component is configured to include a square shape with dimensions smaller than or equal to those of the vibration device.

95. The vibration generating device according to any one of claims 1 to 8, 25 to 32, 39, 40, 42 to 44, 46 to 48, 69 to 72, and 85 to 86, wherein, The end of the pad member is configured to overlap the vibration device in a direction perpendicular to the front surface of the display panel.

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