Vibration generating device and vibration device

Abstract

Vibration generating device and vibration device. The vibration generating device 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 number 202111012290.8 (application date: August 31, 2021, invention name: vibration generating device and vibration device). Technical Field

[0002] The present disclosure relates to a vibration device and a vibration generating device including the same. Background Art

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

[0004] However, because the sound output from the speakers can propagate backward or downward from the display device, the sound quality may be degraded due to interference between the sound reflected from the walls and the floor. As a result, it may be difficult to deliver accurate sound, reducing the viewer's immersive experience. Summary of the Invention

[0005] The inventors have recognized the above-mentioned problems and have conducted various experiments to realize a vibration device for improving sound quality and sound pressure characteristics. Therefore, through various experiments, the inventors have invented a device with a new structure, which includes a vibration device for improving sound quality and / or sound pressure characteristics and sound pressure level characteristics.

[0006] Accordingly, embodiments of the present disclosure are directed to a vibration device and devices including the same that substantially obviate one or more problems due to limitations and disadvantages of the related art.

[0007] An aspect of the present disclosure is to provide a vibration device and a device including the same, which vibrate a display panel to generate sound and have enhanced sound characteristics and / or sound pressure level characteristics.

[0008] Additional features and aspects will be set forth in part in the description that follows, and in part will become apparent from the description, or may be learned by practicing the inventive concepts provided herein. Other features and aspects of the inventive concepts may be realized and obtained by the structure particularly pointed out or derivable from the written description, the claims thereof, and the accompanying drawings.

[0009] To achieve these and other aspects of the present inventive concept, as embodied and broadly described herein, a device 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.

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

[0011] In another aspect, a vibration apparatus includes a plurality of vibration generators stacked to be displaced in the same direction, an adhesive member between the plurality of vibration generators, and spacer members in the plurality of vibration generators.

[0012] In another aspect, an apparatus includes a vibrating member, a vibrating apparatus at the vibrating member, and a spacer member at the vibrating apparatus.

[0013] In another aspect, an apparatus includes a vibration object and a vibration apparatus in the vibration object, the vibration apparatus including a plurality of vibration generators stacked to be displaced in the same direction, a bonding member between the plurality of vibration generators, and spacer members at the plurality of vibration generators.

[0014] It is noted that directional indications are given relative to a user who is viewing an image in front of the device, such as a rear surface or a front surface. That is, the front surface of the display panel (or vibration member or vibration 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 vibration member or vibration object) can be a surface opposite to the front surface, i.e., a surface away from the user. In addition, the thickness direction can refer to a direction perpendicular to the front surface and / or rear surface, and in addition, "separated on a plane parallel to the front surface and / or rear surface of the display panel" can mean that a distance parallel to the front surface and / or rear surface of the display panel (or vibration member or vibration object) is set between two elements.

[0015] The device according to an embodiment of the present disclosure may vibrate the display panel to generate sound, and may output the sound having enhanced sound characteristics and / or enhanced sound pressure level characteristics in a front direction of the display panel.

[0016] According to an embodiment of the present disclosure, a spacer member may be provided, thereby realizing a device having enhanced sound output characteristics.

[0017] In the apparatus according to the embodiment of the present disclosure, as the amplitude displacement of the vibration plate increases, the middle-pitched vocal range, the low-pitched vocal range, and / or the middle-low pitch vocal range characteristics of the sound generated based on the displacement of the vibration plate may be enhanced.

[0018] In the vibration device according to the embodiment of the present disclosure, it is possible to enhance the middle-pitched vocal range, the low-pitched vocal range, and / or the middle-low pitch vocal range characteristics of the sound generated based on the displacement of the vibration plate.

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

[0020] It is to be understood that both the foregoing general description and the following detailed description of the present disclosure are exemplary and explanatory and are intended to provide further explanation of the inventive concept as claimed.

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

[0022] a display panel configured to display an image;

[0023] a vibration device provided at a rear surface of the display panel and configured to vibrate the display panel;

[0024] a supporting member located at a rear surface of the display panel; and

[0025] A spacer member is positioned between the vibration device and the support member.

[0026] Supplement 2. The vibration generating device according to Supplement 1, further comprising:

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

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

[0029] The vibration device includes a plurality of vibration generators, and

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

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

[0032] A bonding member is positioned between the plurality of vibration generators.

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

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

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

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

[0037] Each of the plurality of vibration generators further includes a plurality of vibration structures, and

[0038] The spacer member is disposed between the plurality of vibration structures.

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

[0040] Each of the plurality of vibration generators further includes a plurality of vibration structures, and

[0041] The spacer member is provided at each of the plurality of vibration structures.

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

[0043] Each of the plurality of vibration generators further includes a plurality of vibration structures, and

[0044] The spacer member is provided on each of the plurality of vibration structures and between adjacent spacer members provided at each of the plurality of vibration structures.

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

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

[0047] The spacer member is disposed between the at least two or more vibration structures.

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

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

[0050] The spacer member is provided at each of the plurality of vibration structures and between adjacent spacer members provided at each of the plurality of vibration structures.

[0051] Supplementary note 13. The vibration generating device according to Supplementary note 1, wherein the size of the spacer member is equal to or smaller than the size of the vibration device.

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

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

[0054] The spacer member overlaps at least one of the plurality of vibrating structures.

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

[0056] Each of the plurality of vibration generators further comprises a plurality of vibration structures,

[0057] The spacer member is provided in plurality.

[0058] One of the spacer members overlaps at least two or more of the vibration structures.

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

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

[0061] The spacer member is disposed adjacent to the plurality of vibrating structures.

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

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

[0064] The spacer member overlaps two adjacent vibrating structures.

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

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

[0067] The spacer member is provided at each of the at least two or more vibration structures.

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

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

[0070] The spacer member is provided at each of the at least two or more vibration structures and is provided between adjacent spacer members provided at each of the at least two or more vibration structures.

[0071] Supplement 20. The vibration generating device according to Supplement 1, further comprising:

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

[0073] Supplement 21. The vibration generating device according to Supplement 17, further comprising:

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

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

[0076] Vibrating structures;

[0077] a first protective member provided at a first surface of the vibration structure; and

[0078] A second protective member is provided at a second surface of the vibration structure different from the first surface.

[0079] Supplementary note 23. The vibration generating device according to Supplementary note 22, wherein the vibration device further comprises:

[0080] a first adhesive layer provided between the vibration structure and the first protective member; and

[0081] A second adhesive layer is provided between the vibration structure and the second protection member.

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

[0083] Vibration part;

[0084] a first electrode portion provided between the vibration portion and the first protection member; and

[0085] A second electrode portion is provided between the vibration portion and the second protection member.

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

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

[0088] a display panel configured to display an image;

[0089] a vibration device located at a rear surface of the display panel;

[0090] a plate positioned between the display panel and the vibration device;

[0091] a supporting member provided at a rear surface of the display panel; and

[0092] A spacer member is positioned between the vibration device and the support member.

[0093] Supplement 27. The vibration generating device according to Supplement 26, further comprising:

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

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

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

[0097] The vibration device includes a first vibration device provided at the first area and a second vibration device provided at the second area.

[0098] Supplement 29. The vibration generating device according to Supplement 28, further comprising:

[0099] A spacer is provided between the rear surface of the display panel and the supporting member and between the first area and the second area.

[0100] Supplementary note 30. The vibration generating apparatus according to Supplementary note 28, wherein the spacer member is provided at each of the first vibration device and the second vibration device.

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

[0102] a third vibration device provided at the first region; and

[0103] A fourth vibrating device is provided at the second region.

[0104] Supplement 32. The vibration generating device according to Supplement 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 vibrating element and the fourth vibrating element are arranged parallel to or staggered with each other in the second region.

[0107] Supplementary note 33. The vibration generating apparatus according to Supplementary note 31, wherein the spacer member is provided at each of the third vibration device and the fourth vibration device.

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

[0109] Vibrating structures;

[0110] a first protective member provided at a first surface of the vibration structure; and

[0111] A second protective member is provided at a second surface of the vibration structure different from the first surface.

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

[0113] a first adhesive layer provided between the vibration structure and the first protective member; and

[0114] A second adhesive layer is provided between the vibration structure and the second protection member.

[0115] Supplement 36. The vibration generating device according to Supplement 34, further comprising:

[0116] a first vibration driving line configured to transmit a first vibration driving signal to the vibration structure; and

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

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

[0119] Vibration part;

[0120] a first electrode portion provided between the vibration portion and the first protection member; and

[0121] A second electrode portion is provided between the vibration portion and the second protection member.

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

[0123] Supplement 39. The vibration generating device according to Supplement 37, further comprising:

[0124] a first power supply line connected to one of the first electrode portion and the second electrode portion; and

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

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

[0127] a plurality of vibration generators; and

[0128] A bonding member is located between the plurality of vibration generators.

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

[0130] a third vibration device provided at the first region; and

[0131] a fourth vibrating device disposed at the second region, and

[0132] Wherein, each of the third vibration device and the fourth vibration device includes:

[0133] a plurality of vibration generators; and

[0134] A bonding member is located between the plurality of vibration generators.

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

[0136] a vibration portion including a plurality of inorganic material portions having piezoelectric properties and an organic material portion located between the plurality of inorganic material portions;

[0137] a first electrode portion provided at a first surface of the vibration portion; and

[0138] A second electrode portion is provided at a second surface of the vibration portion that is different from the first surface.

[0139] Supplement 43. The vibration generating device according to Supplement 42, further comprising:

[0140] a first power supply line connected to the first electrode portion; and

[0141] a second power supply line 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 surface and the rear surface of the display panel.

[0143] Supplement 44. The vibration generating device according to Supplement 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 disposed closer to the front surface of the display panel overlaps the inorganic material portion of another vibration generator disposed less close to the front surface of the display panel, and / or

[0146] An organic material portion of the vibration generator disposed closer to the front surface of the display panel overlaps an organic material portion of the other vibration generator disposed less close to the front surface of the display panel.

[0147] Supplement 45. The vibration generating device according to Supplement 42, further comprising:

[0148] a first power line and a second power line,

[0149] wherein some of the plurality of vibration generators overlap in a direction perpendicular to the front surface of the display panel,

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

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

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

[0153] a plurality of vibration structures, the plurality of vibration structures being arranged along a first direction and a second direction intersecting the first direction;

[0154] a first protective member provided at a first surface of each of the plurality of vibration structures through the first adhesive layer; and

[0155] A second protective member is provided at the second surface of each of the plurality of vibration structures through the second adhesive layer.

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

[0157] Supplement 48. The vibration generating device according to Supplement 46, further comprising:

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

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

[0160] Supplementary note 49. The vibration generating apparatus according to Supplementary note 46, wherein the spacer member is provided between the plurality of vibration structures included in each of the plurality of vibration generators.

[0161] Supplementary note 50. The vibration generating apparatus according to Supplementary note 46, wherein the spacer member is provided at the plurality of vibration structures included in each of the plurality of vibration generators.

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

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

[0164] The vibration device further comprises a plurality of vibration structures, and

[0165] The spacer member is disposed adjacent to a plurality of vibrating structures.

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

[0167] The vibration device further comprises a plurality of vibration structures, and

[0168] The spacer member overlaps two adjacent vibrating structures.

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

[0170] The vibration device further comprises a plurality of vibration structures, and

[0171] The spacer member overlaps at least one of the plurality of vibrating structures.

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

[0173] The vibration device further comprises a plurality of vibration structures, and

[0174] The spacer member is provided in plurality, and

[0175] One of the spacer members overlaps at least two or more of the vibration structures.

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

[0177] Vibration part;

[0178] a first electrode portion provided between the vibration portion and the first protection member; and

[0179] A second electrode portion is provided between the vibration portion and the second protection member.

[0180] Supplementary note 57. The vibration generating device according to Supplementary note 56, wherein the vibration portion comprises:

[0181] a plurality of inorganic material portions; and

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

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

[0184] Vibration part;

[0185] a first electrode portion provided at a first surface of the vibration portion; and

[0186] a second electrode portion provided at a second surface of the vibration portion different from the first surface, and

[0187] The first electrode portion of each of the plurality of vibration generators is disposed closer to the display panel than the second electrode portion.

[0188] Supplement 59. The vibration generating device according to Supplement 58, further comprising:

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

[0190] wherein the plurality of vibration generators include a first group and a second group,

[0191] The plurality of amplifiers include a first amplifier group and a second amplifier group,

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

[0193] The amplifier of 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] Supplement 60. The vibration generating device according to Supplement 46, wherein each of the plurality of vibration generators comprises:

[0195] Vibration part;

[0196] a first electrode portion provided at a first surface of the vibration portion; and

[0197] a second electrode portion provided at a second surface of the vibration portion different from the first surface,

[0198] wherein the plurality of vibration generators include a first group and a second group,

[0199] wherein, in the vibration generator of the first group, the first electrode portion is arranged 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 arranged closer to the display panel than the first electrode portion.

[0201] Supplement 61. The vibration generating device according to Supplement 60, further comprising:

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

[0203] Wherein, each of the plurality of amplifiers comprises:

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

[0205] A second output terminal is connected to a second electrode portion of a corresponding vibration generator among the plurality of vibration generators.

[0206] Note 62. A vibration device, comprising:

[0207] a plurality of vibration generators stacked on each other and configured to vibrate in the same direction;

[0208] a bonding member located between the plurality of vibration generators; and

[0209] A spacer member is located at the plurality of vibration generators.

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

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

[0212] Supplement 65. The vibration device according to Supplement 62, further comprising:

[0213] a plate disposed at an uppermost vibration generator among the plurality of vibration generators,

[0214] Wherein, the spacer member is arranged at the lowest vibration generator among the plurality of vibration generators.

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

[0216] Supplement 67. The vibration device according to Supplement 62, further comprising:

[0217] Another spacer member is provided between adjacent spacer members located at the plurality of vibration generators.

[0218] Supplementary note 68. A vibration generating device, comprising:

[0219] vibrating components;

[0220] a vibration device located at the vibration member; and

[0221] A spacer member is located at the vibration device.

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

[0223] The vibration member includes a plate, and

[0224] The plate includes a metal material, or a single non-metal material or a composite non-metal material including one or more of wood, plastic, glass, cloth, paper, and leather.

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

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

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

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

[0229] The spacer member is provided at each of the plurality of vibration structures.

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

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

[0232] The spacer member is disposed between the plurality of vibration structures.

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

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

[0235] The spacer member is provided at each of the plurality of vibration structures and between adjacent spacer members provided at each of the plurality of vibration structures.

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

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

[0238] The spacer member is located at each of a plurality of vibration structures included in a lowermost vibration generator among the plurality of vibration generators.

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

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

[0241] The spacer member is located between a plurality of vibration structures included in a lowermost vibration generator among the plurality of vibration generators.

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

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

[0244] The spacer member is located at each of a plurality of vibration structures included in a lowermost vibration generator among the plurality of vibration generators and is provided at each of the plurality of vibration structures.

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

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

[0247] The spacer member is disposed adjacent to the plurality of vibrating structures.

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

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

[0250] The spacer member overlaps the at least two or more vibration structures.

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

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

[0253] The spacer member is provided at each of the at least two or more vibration structures and between adjacent spacer members provided at each of the at least two or more vibration structures.

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

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

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

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

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

[0259] The spacer member overlaps at least one of the plurality of vibrating structures.

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

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

[0262] The spacer member is provided in plurality, and

[0263] One of the spacer members overlaps at least two or more of the vibration structures.

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

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

[0266] Supplement 86. The vibration generating device according to any one of Supplements 71 to 78, wherein each of the plurality of vibration generators comprises:

[0267] a vibration portion including a plurality of inorganic material portions having piezoelectric properties and an organic material portion located between the plurality of inorganic material portions;

[0268] a first electrode portion provided at a first surface of the vibration portion; and

[0269] A second electrode portion is provided at a second surface of the vibration portion that is different from the first surface.

[0270] Supplement 87. The vibration generating device according to Supplement 86, further comprising:

[0271] a first power line and a second power line,

[0272] wherein some of the plurality of vibration generators overlap in a direction perpendicular to the front surface of the vibration member,

[0273] wherein a first electrode portion of a vibration generator disposed close to the front surface of the vibration member and a first electrode portion of a vibration generator disposed less close to the front surface of the vibration member are connected to the first power line, and

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

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

[0276] Note 89. A vibration generating device according to Note 87, wherein a first power line connected to a first electrode portion of a vibration generator arranged not too close to the front surface of the vibration component does not overlap with a second power line connected to a second electrode portion of a vibration generator arranged not too close to the front surface of the vibration component.

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

[0278] a vibration portion including a plurality of inorganic material portions having piezoelectric properties and an organic material portion located between the plurality of inorganic material portions;

[0279] a first electrode portion provided at a first surface of the vibration portion; and

[0280] A second electrode portion is provided at a second surface of the vibration portion that is different from the first surface.

[0281] Supplement 91. The vibration generating device according to Supplement 90, further comprising:

[0282] a first power supply line connected to the first electrode portion; and

[0283] a second power supply line connected to the second electrode portion,

[0284] Wherein, the second power line is spaced apart from the first power line in a plane parallel to the front surface and the rear surface of the vibration member.

[0285] Supplement 92. The vibration generating device according to any one of Supplements 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 a first surface of another one of the at least two or more vibration 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. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0292] Figure 2 It is along Figure 1 A cross-sectional view taken along line II' shown in FIG.

[0293] Figure 3 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 sectional view taken along line II-II' shown in FIG.

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

[0296] Figure 6A The displacement of the vibration generator according to the 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 sectional view taken along line III-III' shown in FIG.

[0300] Figure 9 A vibration driving 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 Shown Figure 10 The vibrating portion shown.

[0303] 12A to 12C It is along Figure 10 sectional view taken along line IV-IV' shown in FIG.

[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] 16A to 16E It is along Figure 15 A cross-sectional view taken along line VV' shown in FIG.

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

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

[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 A cross-sectional view taken along line VI-VI' shown in FIG.

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

[0314] Figure 23 It is along Figure 22 sectional view taken along line VII-VII' shown in FIG.

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

[0316] Figure 25 It is along Figure 24 A cross-sectional view taken along line VIII-VIII' shown in FIG.

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

[0318] Figure 27 It is along Figure 26 A cross-sectional view taken along line IX-IX' shown in FIG.

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

[0320] Figure 29 It is along Figure 28A cross-sectional view taken along line XX' shown in FIG.

[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 along line II' shown in FIG.

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

[0325] Figure 34 It is along Figure 33 sectional view taken along line XI-XI' shown in FIG.

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

[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 Sound output characteristics of each of the display device according to the embodiment of the present disclosure and the display device according to the experimental example are shown.

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

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

[0333] Figure 42 Sound output characteristics of a display device according to an embodiment of the present disclosure are shown. DETAILED DESCRIPTION

[0334] The shapes, sizes, ratios, angles and quantities disclosed in the drawings for describing the embodiments of the present disclosure are merely examples, and therefore, the present disclosure is not limited to the details shown. The same reference numerals represent the same elements throughout the specification. In the following description, when it is determined that a detailed description of related known functions or configurations would unnecessarily obscure the focus of the present disclosure, such detailed descriptions will be omitted. When “including,” “having,” and “comprising” described in this specification are used, another part may be added unless “only” is used. Unless otherwise indicated, terms in the singular may include plural forms.

[0335] When an element is explained, the element is interpreted as including an error or tolerance range although there is no explicit description of the error or tolerance range.

[0336] When describing a positional relationship, for example, when the positional relationship between two components is described as, for example, "above," "upper," "below," and "near," one or more other components may be set between the two components, unless more restrictive terms such as "only" or "directly" are used.

[0337] When describing temporal relationships, for example, when a temporal sequence is described as, for example, "after," "subsequently," "next," and "before," discontinuities 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 only used to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of this disclosure.

[0339] When describing the elements of the present disclosure, the terms "first," "second," "A," "B," "(a)," "(b)," etc. may be used. These terms are intended to distinguish the corresponding elements from other elements, and the basis, order, or number of the corresponding elements should not be limited by these terms. Unless otherwise specified, the statement that one element is "connected," "coupled," or "attached" to another element or layer indicates that the element or layer may be not only directly connected or attached to the other element or layer, but also indirectly connected or attached to the other 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 of the associated listed items. For example, "at least one of the first item, the second item, and the third item" means all combinations of items selected from two or more of the first item, the second item, and the third item, as well as the first item, the second item, or the third item.

[0341] In the present disclosure, examples of display devices may include narrowly defined display devices, 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. In addition, examples of display devices may include complete sets (or complete sets of equipment) or complete electronic devices that are complete products (or final products) including LCMs or OLED modules, such as laptop computers, TVs, computer monitors, components including automotive equipment or other types of equipment for vehicles, or mobile electronic devices such as smart phones or electronic tablets.

[0342] Therefore, in the present disclosure, examples of display devices may include a narrowly defined display device itself, such as an LCM or OLED module, and a complete set of devices that are final consumer devices or application products including the LCM or OLED module.

[0343] In some embodiments, an LCM or OLED module including a display panel and a driver may be referred to as a narrow display device, and an electronic device as a final product including the LCM or OLED module may be referred to as a complete set. For example, a narrow display device may include a display panel such as an LCD or OLED and a source printed circuit board (PCB) as a controller for driving the display panel. The complete set may also include a complete PCB, which is a complete controller electrically connected to the source PCB to control the complete set.

[0344] The display panel applied to this embodiment can use all types of display panels, such as liquid crystal display panels, organic light emitting diode (OLED) display panels, and electroluminescent display panels, but the embodiment of the present disclosure is not limited to the specific display panel that is vibrated by the sound generating device according to this embodiment to output sound. In addition, the shape or size of the display panel applied to 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 a plurality of gate lines, a plurality of data lines, and a plurality of pixels respectively arranged in a plurality of pixel areas defined by intersections of the gate lines and the data lines. In addition, the display panel may include an array substrate, an upper substrate, and a liquid crystal layer between the array substrate and the upper substrate, the array substrate including a thin film transistor (TFT), which is a switching element for adjusting the light transmittance of each of the plurality of pixels, and the upper substrate including a color filter and / or a black matrix.

[0346] In addition, when the display panel is an organic light-emitting display panel, the display panel may include a plurality of gate lines, a plurality of data lines, and a plurality of pixels respectively arranged in a plurality of pixel areas defined by the intersections of the gate lines and the data lines. In addition, the display panel may include an array substrate, an organic light-emitting device layer, and an encapsulation substrate, the array substrate including a TFT, which is an element for selectively applying a voltage to each of the pixels, the organic light-emitting device layer being located on the array substrate, and the encapsulation substrate being arranged at the array substrate to cover the organic light-emitting device layer. The encapsulation substrate may protect the TFT and the organic light-emitting device layer from external impacts and may prevent moisture or oxygen from penetrating into the organic light-emitting device layer. In addition, the layer arranged on the array substrate may include an inorganic light-emitting layer (e.g., a nanomaterial layer, quantum dots, etc.). As another embodiment of the present disclosure, the layer arranged on the array substrate may include a micro light-emitting diode.

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

[0348] The features of the various embodiments of the present disclosure may be coupled or combined with each other in part or in whole, and may interoperate with each other and be technically driven in various ways, as will be fully understood by those skilled in the art. The embodiments of the present disclosure may be performed independently of each other, or may be performed together in a mutually dependent 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 is different from the actual scale, and therefore, is not limited to the scale shown in the drawings.

[0350] In the case where a speaker is provided in a display device to realize sound in the display device, the speaker can be realized as a membrane type, and therefore, the thickness of the display device can be thinner. A membrane type vibration device can be manufactured to have a large area and can be applied to a display device having a large area. However, because the piezoelectric characteristics of the membrane type vibration device are low, it may be difficult to apply the membrane type vibration device to a large area due to the low vibration. When ceramics are used to enhance the piezoelectric characteristics, the durability of the membrane type vibration device may be weak, and the size of the ceramics may be limited. When a vibration device comprising a piezoelectric composite including piezoelectric ceramics is applied to a display device, because the piezoelectric composite vibrates in a horizontal direction relative to the left and right directions (for example, a horizontal direction relative to the left and right directions of the display device), it may not be able to fully vibrate the display device in the vertical (or front and back) direction. Therefore, it may be difficult to apply the vibration device to the display device, and it may not be possible to output the desired sound to the front area in front of the display device. In the case where a membrane type piezoelectric element is applied to a display device, there may be a problem that the sound pressure characteristics are lower than those of a speaker such as an exciter. In the case where a stacked piezoelectric element in which a plurality of film-type piezoelectric elements are stacked into a multilayer is applied to a display, power consumption may increase, and the thickness of the display device may become thicker. In addition, when a vibration device is provided at the rear surface of the display panel (for example, the rear surface of a mobile device), a monophonic sound can be output, but the inventors have recognized that it is difficult to output a sound including stereophonic sound. Therefore, the vibration device can be further provided at the periphery of the display panel to achieve a sound including stereophonic sound, but the inventors have recognized that it is difficult to place the exciter in a flexible device in which a curved portion is provided in the display panel, and when a speaker including a piezoelectric ceramic is provided, the piezoelectric ceramic is fragile.

[0351] Therefore, the inventors have conducted various experiments to realize a vibration device that can produce sound, including stereo sound, can be applied to flexible display devices, and can vibrate in a direction perpendicular to the width direction of the display panel. Through various experiments, the inventors have invented a device including a vibration device with a new structure, which can produce sound, including stereo sound, and can be applied to flexible devices, etc. This will be described in detail below.

[0352] Figure 1 A device according to an embodiment of the present disclosure is shown, and Figure 2 It is along Figure 1 A cross-sectional view taken along line II' shown in FIG.

[0353] Reference Figure 1 and Figure 2, the device according to an embodiment of the present disclosure may include a vibration member and a vibration device 200 provided at the rear surface (or back surface) of the vibration member. For example, the vibration member may be a vibrating object, a display panel, a vibration plate, or a front member, but the embodiments of the present disclosure are not limited thereto. Hereinafter, an example in which the vibration member is a display panel will be described.

[0354] The display panel 100 may display an electronic image or a digital image. For example, the display panel 100 may output light to display an image. The display panel 100 may be a curved display panel, or may 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. The display panel 100 may be a flexible display panel. For example, the display panel 100 may 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 embodiments of the present disclosure are not limited thereto.

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

[0356] The display panel 100 according to an embodiment of the present disclosure may include an anode electrode, a cathode electrode, and a light-emitting device, and may be configured to display an image in a type such as a top emission type, a bottom emission type, or a dual emission type according to the structure of a pixel array layer including a plurality of pixels. In the top emission type, an image can be displayed by outputting visible light generated from the pixel array layer to a front region of a base substrate. In the bottom emission type, an image can be displayed by outputting visible light generated from the pixel array layer to a rear region of a base substrate.

[0357] The display panel 100 according to an embodiment of the present disclosure may include a pixel array portion provided 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 gate lines, data lines, and pixel driving power lines, etc., but the embodiments of the present disclosure are not limited thereto.

[0358] Each of the multiple pixels may include a pixel circuit layer, the pixel circuit layer including a driving thin film transistor (TFT) arranged at a pixel area consisting of multiple gate lines and / or multiple 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 may be configured in a transistor region of each pixel region provided 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 an oxide such as indium-gallium-zinc-oxide (IGZO), but embodiments of the present disclosure are not limited thereto.

[0360] The anode electrode may be provided at an opening region provided at each pixel region and may be electrically connected to the driving TFT.

[0361] According to an embodiment of the present disclosure, a light-emitting device may include an organic light-emitting device layer formed above an anode electrode. The organic light-emitting device layer may be implemented to emit light of the same color (e.g., white light) for each pixel, or may be implemented to emit light of different colors (e.g., red light, green light, or blue light) for each pixel. The cathode electrode (or common electrode) may be commonly connected to the organic light-emitting device layer provided 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 a combination thereof, but the 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 the embodiments of the present disclosure are not limited thereto. In addition, the present disclosure may be applied regardless of the stacking order. The stacked structure including 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 an N-type charge generation layer and a P-type charge generation layer.

[0362] According to another embodiment of the present disclosure, a light-emitting device may include a micro light-emitting diode device electrically connected to each of an anode electrode and a cathode electrode. The micro light-emitting diode device may be a light-emitting diode implemented as an integrated circuit (IC) or a chip. The micro light-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 micro light-emitting diode device provided in each pixel region.

[0363] The encapsulation portion may be formed on the substrate to surround the 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 an embodiment of the present disclosure may be formed as a multilayer structure in which organic material layers and inorganic material layers are alternately stacked, but the term is not limited thereto. The inorganic material layer may prevent oxygen or moisture from penetrating into the light-emitting device layer of the pixel array portion. The organic material layer may be formed to have a thickness relatively thicker than that of the inorganic material layer to cover particles that 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. The touch panel may be provided on the encapsulation portion, or may be provided at the rear surface of the pixel array portion.

[0364] The display panel 100 according to an embodiment 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 a display portion or a display area), and the pixel array (or a display portion or a display area) includes a plurality of pixels respectively arranged in a plurality of pixel areas defined by 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 line and / or the data line, a pixel electrode connected to the TFT, and a common electrode arranged adjacent to the pixel electrode and provided with a common voltage.

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

[0366] The pad portion can supply signals provided from the outside to the pixel array and / or the gate drive circuit. For example, the pad portion can include a plurality of data pads connected to a plurality of data lines via a plurality of data link lines and / or a plurality of gate input pads connected to the gate drive circuit via a gate control signal line. For example, the size of the first substrate can be larger than the second substrate, but embodiments of the present disclosure are not limited thereto.

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

[0368] The second substrate may be a lower substrate or a color filter array substrate. For example, the second substrate may include a pixel pattern (or pixel defining pattern) and a color filter layer, the pixel pattern (or pixel defining pattern) including an opening area overlapping with a pixel area formed in the first substrate, and the color filter layer is formed at the opening area. The second substrate may have a size smaller than the first substrate, but the embodiments of the present disclosure are not limited thereto. For example, the second substrate may overlap with the remaining portion of the upper substrate except for the first periphery. The second substrate may be attached to the remaining portion of the first substrate except for the first periphery using a sealant, wherein the liquid crystal layer is located between the second substrate and the first substrate.

[0369] The liquid crystal layer may be disposed between the first and second substrates. The liquid crystal layer may include liquid crystals containing liquid crystal molecules, wherein an arrangement direction of the liquid crystal molecules changes based on an electric field generated by a common voltage and a data voltage applied to a pixel electrode of each pixel.

[0370] The second polarization member may be attached to the bottom surface of the second substrate and may polarize light incident from the backlight unit and traveling to the liquid crystal layer. The first polarization member may be attached to the top surface of the first substrate and may polarize light passing through the first substrate and output to the outside.

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

[0372] In the display panel 100 according to another embodiment of 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 an embodiment of the present disclosure are reversed. 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 an embodiment of the present disclosure may include a curved portion, which may be bent or curved to have a curved shape or a specific curvature radius.

[0374] The curved portion of the display panel 100 may be located on at least one or more of one periphery and another periphery of the display panel 100 that are parallel to each other. One periphery and / or another periphery of the display panel 100 implemented with 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 frame curved structure or a double-sided frame curved structure. In addition, 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 vibrate the display panel 100 at the rear surface of the display panel 100, thereby providing the user (or viewer) with sound 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 the present disclosure are not limited thereto.

[0376] As an embodiment of the present disclosure, the vibration device 200 may vibrate according to a voice signal synchronized with an image displayed on the display panel 100 to vibrate the display panel 100. As another embodiment of the present disclosure, the vibration device 200 may be provided at the display panel 100 and may vibrate according to a tactile feedback signal (or tactile feedback signal) synchronized with a user's touch applied to a touch panel (or touch sensor layer) embedded in the display panel 100 to vibrate the display panel 100. Thus, the display panel 100 may vibrate based on the vibration of the vibration device 200 to provide at least one of sound and tactile feedback to the user (or viewer).

[0377] The vibration device 200 according to the embodiment of the present disclosure can be implemented to have 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 the embodiments of the present disclosure are not limited thereto. For example, the size of the vibration device 200 can be the same as or smaller than the size of the display area AA. For example, the size of the vibration device 200 can be the same or approximately the same as the display area AA of the display panel 100, so that the vibration device 200 can cover most areas of the display panel 100, and the vibration generated by the vibration device 200 can make the entire part of the display panel 100 vibrate, so that the localization of the sound may be higher and the user's satisfaction can be improved. In addition, the contact area (or panel coverage) between the display panel 100 and the vibration device 200 can be increased, so that the vibration area of ​​the display panel 100 can be increased, thereby improving the sound of the mid-low pitch vocal cords generated based on the vibration of the display panel 100. In addition, the vibration device 200 applied to a large-size display device can vibrate the entire display panel 100 having a large size (or a large area), and therefore, the positioning of the sound based on the vibration of the display panel 100 can be further enhanced, thereby achieving an improved sound effect. Therefore, the vibration device 200 according to an embodiment of the present disclosure can be arranged at the rear surface of the display panel 100 so that the display panel 100 fully vibrates in the vertical (or front-to-back) direction, thereby outputting the desired sound to the front area in front of the display device. For example, the vibration device 200 according to an embodiment of the present disclosure can be arranged at the rear surface of the display panel 100 so that the display panel 100 fully vibrates in the vertical (or front-to-back) direction relative to the first direction (X) of the display panel 100, thereby outputting the desired sound to the front area in front of the display device.

[0378] The vibration device 200 according to an embodiment of the present disclosure may be implemented as a membrane type. Since the vibration device 200 may be implemented as a membrane type, the vibration device 200 may have a thickness thinner than the display panel 100, and therefore, the thickness of the display device does 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, a vibration generating device, a displacement device, a sound device, a membrane actuator, a membrane-type piezoelectric composite actuator, a membrane speaker, a membrane-type piezoelectric speaker, or a membrane-type piezoelectric composite speaker, which uses the display panel 100 as a vibration plate, but the embodiments of the present disclosure are not limited thereto.

[0379] As another embodiment of the present disclosure, the vibration device 200 may not be provided 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 made of one or more of wood, plastic, glass, cloth, paper, leather, vehicle interior materials, building interior ceilings, aircraft interior materials, etc., but the embodiments of the present disclosure are not limited thereto. In this case, the non-display panel may be applied as a vibration plate, and the vibration device 200 may vibrate the non-display panel to output sound.

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

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

[0382] A vibration device comprising a vibration generator may have the problem of not being able to output enough sound. For example, when a vibration device comprising a vibration generator is applied to a display device such as a television (TV), there may be a problem of being difficult to ensure enough sound. Therefore, when a vibration device implemented by two vibration generators arranged in parallel is applied to a device or a display device, the attachment area of ​​the display panel 100 and the vibration device can be increased. However, because the attachment area increases, it may be difficult to attach the vibration device to the rear surface of the display panel 100 without bubbles. For example, when the display panel 100 can be a light-emitting display panel, there may be a problem of being difficult to attach the vibration device to the packaging substrate without bubbles. In addition, in a vibration device implemented by two vibration generators arranged in parallel, because the vibrations of adjacent vibration generators are different, there may be a problem of partition vibrations with different vibrations. Therefore, there may be a problem of being difficult to output a sound with enhanced sound flatness. There may be a problem of partition vibrations increasing as the attachment area of ​​the vibration device increases.

[0383] The vibration device 200 according to an embodiment of the present disclosure may include a plurality of vibration generators 210 and 230 that overlap each other. The vibration device 200 may include a plurality of vibration generators 210 and 230 that overlap or are stacked 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 are stacked 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 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 membrane, a displacement membrane, 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, when multiple vibration generators 210 and 230 overlap or stack, multiple vibration generators 210 and 230 can shrink or expand in the same driving direction (or displacement direction) based on the vibration drive signal. Therefore, the displacement amount (or bending force or flexure) or amplitude shift of the display panel 100 can be increased or maximized. Therefore, multiple vibration generators 210 and 230 can increase (or maximize) the displacement amount (or bending force or flexure) or amplitude shift of the display panel 100, thereby enhancing the sound pressure level characteristics of the sound generated by the vibration of the display panel 100 and / or the sound characteristics of the mid-low pitch vocal cords. For example, multiple vibration generators 210 and 230 can be implemented so that multiple vibration generators 210 and 230 overlap or stack to have the same driving direction. Therefore, the driving force of each of the multiple vibration generators 210 and 230 can be increased or maximized. For example, a plurality of vibration generators 210 and 230 can be implemented so that the plurality of vibration generators 210 and 230 are stacked to have the same driving direction, and therefore, the vibration of each of the plurality of vibration generators 210 and 230 can be increased or can be maximized. Therefore, the sound pressure level characteristics of the sound generated by the display panel 100 based on the vibration of the plurality of vibration generators 210 and 230 and / or the sound characteristics of the mid-low pitch vocal cords can be enhanced. For example, the mid-low pitch vocal cords can be 200Hz to 1kHz, but embodiments of the present disclosure are not limited thereto. For example, the high pitch vocal cords can be 1kHz or greater or 3kHz or greater, but embodiments of the present disclosure are not limited thereto.

[0385] Each of the plurality of vibration generators 210 and 230 may include a vibration structure (or piezoelectric structure, or vibration part, or piezoelectric vibration part), and the vibration structure (or piezoelectric structure, or vibration part, or piezoelectric vibration part) includes a piezoelectric ceramic having piezoelectric properties, but the embodiments of the present disclosure are not limited thereto. For example, each of the plurality of vibration generators 210 and 230 according to the embodiments of the present disclosure may include a piezoelectric ceramic having a perovskite crystal structure, and thus may vibrate (or mechanically shift) 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 contract and expand alternately and repeatedly based on the inverse piezoelectric effect of the vibration structure (or piezoelectric structure, or vibration part, or piezoelectric vibration part), and thus may shift (or vibrate) in the same direction based on a bending phenomenon in which the bending direction alternates, thereby increasing or maximizing the displacement amount (or bending force or flexure) or amplitude displacement of the vibration device 200 or / and the display panel 100.

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

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

[0388] According to an embodiment of the present disclosure, the adhesive member 250 can be disposed between the plurality of vibration generators 210 and 230. For example, the plurality of vibration generators 210 and 230 can be symmetrical with respect to the adhesive member 250. According to an embodiment of the present disclosure, the adhesive member 250 can include a material including an adhesive layer that has good adhesion or adhesion to each of the plurality of vibration generators 210 and 230. For example, the adhesive member 250 can include a foam pad, a double-sided foam pad, double-sided foam tape, double-sided tape, an adhesive, or the like, but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the adhesive member 250 can include an epoxy-based, acrylic-based, silicone-based, or polyurethane-based material, but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the adhesive member 250 can include a polyurethane-based material, which has relatively toughness characteristics compared to acrylic resins among acrylic resins and polyurethanes. Thus, vibration losses 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 the present disclosure, the bonding member 250 may include one or more of a heat-curing adhesive, a light-curing adhesive, and a thermal adhesive. For example, the bonding member 250 may include a thermal adhesive. The thermal adhesive may be heat-activated or heat-curing. For example, the bonding member 250 including the thermal adhesive may attach or couple two adjacent vibration generators 210 and 230 using heat and pressure.

[0390] The plurality of vibration generators 210 and 230 according to the embodiment of the present disclosure may be integrated into one structure (or element or component) through a lamination process using the adhesive member 250. For example, the plurality of vibration generators 210 and 230 may be integrated into one structure through a lamination process using a roller.

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

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

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

[0394] Subsequently, the first vibration generator 210 may be preliminarily bonded or coupled to the second vibration generator 230 by the adhesive member 250 (preliminary bonding process). For example, the preliminarily bonding process may press at least one of the first vibration generator 210 and the second vibration generator 230 with a predetermined pressure. For example, the preliminarily bonding process may be omitted.

[0395] Subsequently, the first vibration generator 210 and the second vibration generator 230 , which are preliminarily coupled or connected to each other, may be completely coupled or connected to each other (a main coupling process).

[0396] For example, when the adhesive member 250 includes a light-curing adhesive, the main bonding process may irradiate light onto the adhesive member 250 disposed between the first vibration generator 210 and the second vibration generator 230, and then the first vibration generator 210 may be mainly bonded or coupled to the second vibration generator 230 through a light-curing process that cures the adhesive member 250. For example, the light-curing process may irradiate light onto the first vibration generator 210 and the second vibration generator 230 in a state where at least one of the first vibration generator 210 and the second vibration generator 230 is pressed with a certain pressure, but embodiments of the present disclosure are not limited thereto.

[0397] As another embodiment of the present disclosure, when the adhesive member 250 includes a thermosetting adhesive, the main adhesive process may bond or couple the first vibration generator 210 to the second vibration generator 230 through a thermosetting process that 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, the thermosetting process may apply heat to the first vibration generator 210 and the second vibration generator 230 in a state where at least one of the first vibration generator 210 and the second vibration generator 230 is pressed with a certain pressure, but embodiments of the present disclosure are not limited thereto.

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

[0399] Subsequently, the plurality of vibration generators 210 and 230 integrated into one structure (or element) may be unloaded from the stage by the adhesive member 250 .

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

[0401] The connection member 150 may be provided between the display panel 100 and the vibration device 200 so that the vibration device 200 may be connected or coupled to the rear surface of the display panel 100. For example, the vibration device 200 may be connected or coupled to the rear surface of the display panel 100 through the connection member 150, and thus, the vibration device 200 may be supported by or provided at the rear surface of the display panel 100.

[0402] The connecting member 150 according to an embodiment of the present disclosure may include a material including an adhesive layer that has good adhesion or adhesion relative 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, a double-sided foam pad, a double-sided foam tape, a double-sided tape, an adhesive, etc., but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the connecting member 150 may include an epoxy group, an acrylic group, a silicone group, or a polyurethane group, but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the connecting member 150 may be different from the adhesive layer of the adhesive member 250. For example, the adhesive layer of the connecting member 150 may include an acrylic material, which is relatively better in terms of adhesion and hardness among acrylics and polyurethanes. Therefore, the vibration of the vibration device 200 can be well transmitted to the display panel 100.

[0403] The adhesive layer of the connection member 150 may further include additives such as a tackifier or adhesion enhancer, a wax component, an antioxidant, and the like. The additives may prevent or reduce separation (peeling) of the connection member 150 from the display panel 100 due to vibration of the vibration device 200. For example, the tackifier may be a rosin derivative, and the wax component may be paraffin. For example, the antioxidant may be a phenol-based antioxidant such as a thioester, but embodiments of the present disclosure are not limited thereto.

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

[0405] The apparatus according to an embodiment of the present disclosure may further include a support member 300 disposed at 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 a glass material, a metal material, and a plastic material. For example, the support member 300 may be a rear surface structure, a support structure, a support cover, a rear member, a housing, a casing, or a group structure, but the embodiments of the present disclosure are not limited thereto. For example, the support member 300 may be referred to as other terms such as a bottom cover, a bottom plate, a back cover, a base frame, a metal frame, a metal chassis, a chassis base, or an m chassis. For example, the support member 300 may be implemented as any type of frame or plate-like structure provided at the rear surface of the display panel 100.

[0407] The support member 300 according to an embodiment of the present 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 of a glass material, a metal material, and a plastic material. For example, the first support member 310 may be a first rear structure, a first supporting structure, a first supporting cover, a first rear cover, a first rear member, an inner plate, or an inner plate, but embodiments of the present disclosure are not limited thereto.

[0409] The first supporting member 310 may be spaced apart from the rearmost 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, a vibration space, a sound resonance box, etc., but the embodiments of the present disclosure are not limited thereto.

[0410] The second support member 330 may be provided at the rear surface of the first support member 310. The second support member 330 may be a member that covers 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 a glass material, a metal material, and a plastic material. 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 plate, a rear plate, a back plate, or a rear cover, but embodiments of the present disclosure are not limited thereto.

[0411] The supporting member 300 according to an embodiment of the present disclosure may further include a connecting member (or a third connecting member) 350 .

[0412] The 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 coupled or connected to each other via 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 sticky foam pad, but embodiments of the present disclosure are not limited thereto. For example, the connecting member 350 may have elasticity for absorbing shock, but embodiments of the present disclosure are not limited thereto. As an embodiment of the present disclosure, the connecting member 350 may be disposed throughout the entire area between the first support member 310 and the second support member 330. As an embodiment of the present disclosure, the connecting member 350 may be disposed in a mesh structure that includes air gaps between the first support member 310 and the second support member 330.

[0413] The apparatus according to an embodiment of the present disclosure may further include a middle frame 400 .

[0414] The middle frame 400 may be disposed between the rear periphery of the display panel 100 and the front periphery of the support member 300. The middle 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 middle frame 400 may provide a gap space GS between the display panel 100 and the support member 300. The middle frame 400 may be referred to as a connecting member, a frame, a frame member, an intermediate member, a side cover member, an intermediate chassis, an intermediate cover, an intermediate chassis, etc., but embodiments of the present disclosure are not limited thereto.

[0415] The middle frame 400 according to an embodiment 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 the embodiment of the present disclosure is not limited thereto. For example, the second support portion 430 may be a sidewall portion, but the embodiment of the present disclosure is not limited thereto.

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

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

[0418] The apparatus according to the embodiment of the present disclosure may include a panel connection member instead of the middle frame 400 .

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

[0420] In a device according to an embodiment of the present disclosure, when the device includes a panel connection member instead of the middle frame 400, the support member 300 may include a curved sidewall that curves from the end (or ends) of the second support member 330 and surrounds the outer surface (or outer sidewall) of each of the first support member 310, the panel connection member, and the display panel 100. The curved sidewall according to an embodiment of the present disclosure may have a single sidewall structure or a curling structure. A curling structure is a structure in which the ends of any member are bent into a curved shape and overlap each other or are separated parallel to each other. For example, to enhance the design aesthetics, the curved sidewall may include a first curved sidewall that curves from one side of the second support member 330 and a second curved sidewall that curves from the first curved sidewall to the area between the first curved sidewall and the outer surface of the display panel 100. The second curved sidewall may be separated from the inner surface of the first curved sidewall. Therefore, the second curved sidewall can prevent the outer surface of the display panel 100 from contacting the inner surface of the first curved sidewall, or can prevent external impact in a lateral direction from being transmitted to the outer surface of the display panel 100. According to another embodiment of the present disclosure, in the device according to the embodiment of the present disclosure, the middle frame 400 may be omitted. The device may include a panel connecting member or an adhesive member instead of the middle frame 400. According to another embodiment of the present disclosure, the device may include a partition instead of the middle 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 sectional view taken along line II-II' shown in FIG.

[0422] Reference Figures 2 to 4 , the vibration device 200 according to an embodiment 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 can overlap or stack to shift (or drive or vibrate) in the same direction so as to maximize the amplitude shift of the vibration device 200 and / or the amplitude shift of the display panel 100. For example, multiple vibration generators 210 and 230 can have substantially the same size, but embodiments of the present disclosure are not limited thereto. For example, multiple vibration generators 210 and 230 can have substantially the same size within the error range of the manufacturing process, but embodiments of the present disclosure are not limited thereto. Therefore, 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 vibration generator in the multiple vibration generators 210 and 230 can be aligned on a virtual extension line VL extending along the thickness direction Z of the display panel 100, or can be arranged at the virtual extension line VL. For example, one side (or end, or end, or outer surface, or each corner) 210 a and 230 a of each of the plurality of vibration generators 210 and 230 may be aligned in a direction perpendicular to the front surface of the display panel 100 .

[0424] For example, in at least one of the plurality of vibration generators 210 and 230, the displacement directions and amplitude shifts of the plurality of vibration generators 210 and 230 may not match, and therefore, the amplitude shift of the vibration device 200 may not be maximized. For example, when at least one of the plurality of vibration generators 210 and 230 has different sizes that deviate from the error range of the manufacturing process, the displacement directions and amplitude shifts of the plurality of vibration generators 210 and 230 may not match, and therefore, the amplitude shift of the vibration device 200 may not be maximized. In addition, when at least one of the plurality of vibration generators 210 and 230 shifts in different directions, the displacement directions of the plurality of vibration generators 210 and 230 may not match, and therefore, the amplitude shift of the vibration device 200 may not be maximized.

[0425] The vibration device 200 according to the embodiment of the present disclosure may include two or more vibration generators 210 and 230 stacked to be displaced in the same direction. In the following description, an example in which the vibration device 200 includes the vibration generators 210 and 230 will be described.

[0426] According to an embodiment of the present disclosure, the first vibration generator 210 may be connected to the rear surface of the display panel 100 or disposed at the rear surface of the display panel 100 through a connecting member 150 (or a second connecting member). The second vibration generator 230 may be disposed or attached to the first vibration generator 210 through an adhesive member 250 (or a first connecting member).

[0427] The first vibration generator 210 and the second vibration generator 230 according to the embodiment of the present disclosure may each include a vibration structure 211 , a first protection member 213 , and a second protection 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 a property in which, when pressure or distortion is applied to a crystal structure by an external force, a potential difference occurs due to dielectric polarization caused by a change in the relative positions of positive (+) ions and negative (-) ions, and vibration is generated by an electric field based on a 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 the present disclosure are not limited thereto.

[0429] The vibration structure 211 according to an embodiment of the present disclosure may include: a vibration part 211a including a piezoelectric material, a first electrode part 211b arranged at a first surface of the vibration part 211a, and a second electrode part 211c arranged at a second surface of the vibration part 211a opposite to or different from the first surface.

[0430] The vibration portion 211a may include a piezoelectric material. The vibration portion 211a may be referred to as a vibration layer, a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a piezoelectric vibration portion, a piezoelectric vibration 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 embodiments of the present invention are not limited thereto.

[0431] The vibration portion 211 a may be formed of a transparent, translucent, or opaque piezoelectric material, and the vibration portion 211 a may be transparent, translucent, or opaque.

[0432] The vibration portion 211a can be configured as a ceramic-based material for generating relatively high vibrations, or can be configured as a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure can have a piezoelectric effect and an inverse piezoelectric effect, and can be a plate-like structure with a direction. 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 the present disclosure, in the chemical formula "ABO3", "A" and "B" can be cations, and "O" can be an anion. For example, the chemical formula "ABO3" can include at least one or more of PbTiO3, PbZrO3, BaTiO3, and SrTiO3, but the embodiments of the present disclosure are not limited thereto.

[0433] When a perovskite crystal structure includes a central ion (e.g., lead (II) titanate), the position of the titanium (Ti) ion can be changed by external stress or a magnetic field, and thus, the polarization can be changed, thereby generating a piezoelectric effect. For example, in the perovskite crystal structure, the cubic shape corresponding to the symmetric structure can be changed to a tetragonal (e.g., quadrilateral), tetragonal, or rhombohedral structure corresponding to the asymmetric structure, thereby generating a piezoelectric effect. In the tetragonal (e.g., quadrilateral), tetragonal, or rhombohedral structure corresponding to the asymmetric structure, the polarization degree at the morphological phase boundary can be high, and the polarization can be easily rearranged, so the perovskite crystal structure can have high piezoelectric properties.

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

[0435] As another embodiment of the present disclosure, the vibration portion 211a may include a lead zirconate titanate (PZT)-based material including lead (Pb), zirconium (Zr), and titanium (Ti), or may include a lead zirconate nickel (PZNN)-based material including lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but the embodiments of the present disclosure are not limited thereto. In addition, the vibration portion 211a may include at least one or more of CaTiO3, BaTiO3, and SrTiO3 that do not contain Pb, but the embodiments of the present disclosure are not limited thereto.

[0436] According to another embodiment of the present disclosure, the vibration portion 211a may have a piezoelectric deformation coefficient "d33" of 1,000 pC / N or more in the thickness direction Z. Therefore, the vibration device 200 may be applied to a display panel having a large size and may need to have a high piezoelectric deformation coefficient "d33" to have sufficient vibration characteristics or piezoelectric characteristics. For example, the vibration portion 211a may include a PZT-based material (PbZrTiO3) as a main component and may include a softener dopant material doped into the "A" position (Pb) and a relaxor ferroelectric material doped into the "B" position (ZrTi).

[0437] The softener dopant material can enhance the piezoelectric and dielectric properties of the vibration portion 211a, and for example, can increase the piezoelectric deformation coefficient "d33" of the vibration portion 211a. When the softener dopant material includes a monovalent element "+1", the inventors have confirmed that the piezoelectric and dielectric properties are reduced. For example, when the softener dopant material includes potassium (K) and rubidium (Rb), the piezoelectric and dielectric properties may be reduced. Therefore, by conducting various experiments, the inventors have realized that in order to enhance the piezoelectric and dielectric properties, the softener dopant material should include a binary element "+2" to a ternary element "+3". The softener dopant material according to an embodiment of the present disclosure can include a binary element "+2" to a ternary element "+3". A morphotropic phase boundary (MPB) can be achieved by adding the softener dopant material to the PZT-based material (PbZrTiO3), and therefore, the piezoelectric and dielectric properties can be enhanced. For example, the softener dopant material may include strontium (Sr), barium (Ba), lanthanum (La), neodymium (Nd), calcium (Ca), yttrium (Y), erbium (Er), or ytterbium (Yb). For example, ions (Sr2+, Ba2+, La2+, Nd3+, Ca2+, Y3+, Er3+, Yb3+) of the softener dopant material doped into the PZT-based material (PbZrTiO3) may replace a portion of lead (Pb) in the PZT-based material (PbZrTiO3), and the substitution rate thereof may be 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 be broken, and thus, the electromechanical coupling coefficient "kP" and the piezoelectric deformation coefficient "d33" may be reduced. When the softener dopant material is substituted, an MPB may be formed, and the MPBs of the piezoelectric characteristics and the dielectric characteristics may be higher, thereby realizing a vibration device having high piezoelectric characteristics and high dielectric characteristics.

[0438] According to an embodiment of the present disclosure, the relaxor ferroelectric material doped into the PZT-based material (PbZrTiO3) can enhance the electrodeformation characteristics of the vibration portion 211a. The relaxor ferroelectric material according to the embodiment of the present disclosure may include a lead magnesium niobate (PMN)-based material or a lead nickel niobate (PNN)-based material, but the embodiment of the present disclosure is not limited thereto. The PMN-based material may include Pb, Mg, and Nb, and may include, for example, Pb(Ni,Nb)O3. For example, the relaxor ferroelectric material doped into the PZT-based material (PbZrTiO3) may replace a portion of each of zirconium (Zr) and titanium (Ti) in the PZT-based material (PbZrTiO3), and its substitution rate may be 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 be broken, and therefore, the electromechanical coupling coefficient "kP" and the piezoelectric deformation coefficient "d33" may be reduced.

[0439] According to an embodiment of the present disclosure, the vibration 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 hexavalent 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 part 211 a according to an embodiment of the present disclosure may be expressed as the following Formula 1.

[0441] [Formula 1]

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

[0443] Here, C may 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] The vibration portion 211a according to an embodiment of the present disclosure may 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 may be implemented in a large-area device or a large-area display device.

[0445] The vibration part 211 a according to an embodiment of the present disclosure may be configured in a circular shape, an elliptical shape, or a polygonal shape, but the embodiment of the present disclosure is not limited thereto.

[0446] The first electrode portion 211b may be disposed at the first surface (or top surface) of the vibration portion 211a. For example, the first electrode portion 211b may be electrically coupled or connected to the first surface of the vibration portion 211a. For example, the first electrode portion 211b may have a single electrode type disposed on the entire first surface of the vibration portion 211a. For example, the first electrode portion 211b may have the same shape as the vibration portion 211a, but embodiments of the present disclosure are not limited thereto. The first electrode portion 211b according to an embodiment of the present disclosure may be formed of a transparent conductive material, a translucent conductive material, or an opaque conductive material. For example, the transparent conductive material or the translucent 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 at a second surface (or rear surface) of the vibration portion 211a that is opposite to or different from the first surface. For example, the second electrode portion 211c may be electrically coupled or connected to the second surface of the vibration portion 211a. For example, the second electrode portion 211c may have a single electrode type disposed at the entire second surface of the vibration portion 211a. The second electrode portion 211c may have the same shape as the vibration portion 211a, but the embodiments of the present disclosure are not limited thereto. The second electrode portion 211c according to an embodiment of the present disclosure may be formed of a transparent conductive material, a translucent 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 the 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 material different from 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 the present disclosure are not limited thereto. For example, in a vibration device 200 including a plurality of vibration generators 210 and 230 according to an embodiment of the present 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 portion 211b of the first vibration generator 210 and the first electrode portion 211b of the second vibration generator 230 may be referred to as a third electrode portion, but embodiments of the present disclosure are not limited thereto. One of the second electrode portion 211c of the first vibration generator 210 and the second electrode portion 211c of the second vibration generator 230 may be referred to as a fourth electrode portion, but embodiments of the present disclosure are not limited thereto.

[0449] The vibration portion 211a can be polarized by a specific voltage applied to the first electrode portion 211b and the second electrode portion 211c in a specific temperature atmosphere or a temperature atmosphere that changes from high temperature to room temperature, but the embodiments of the present disclosure are not limited thereto. For example, the vibration portion 211a can be alternately and repeatedly contracted and expanded based on the inverse piezoelectric effect in response 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, thereby being displaced or vibrated.

[0450] The vibration structure 211 (or vibration portion 211a) of the first vibration generator 210 can 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 shift of the vibration device 200, the vibration structure 211 (or vibration portion 211a) of the first vibration generator 210 can 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 can 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 part 211a) of the first vibration generator 210 and the vibration structure 211 (or vibration part 211a) of the second vibration generator 230 can be implemented in a stacked structure having the same size and overlapping without interlacing, thereby maximizing or increasing the displacement amount or amplitude shift of the vibration device 200. For example, the vibration structure 211 (or vibration part 211a) of the first vibration generator 210 and the vibration structure 211 (or vibration part 211a) of the second vibration generator 230 can be implemented in a stacked structure having the same size and precisely overlapping without interlacing, thereby maximizing or increasing the displacement amount or amplitude shift of the vibration device 200.

[0451] According to an embodiment of the present disclosure, the first part (or end, or end, or 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 virtual extension line VL, or can be set at the virtual extension line VL. For example, the first part (or end, or end, or 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 on the virtual extension line VL, or can be precisely set at the virtual extension line VL. The second part (or end, 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 aligned on the virtual extension line VL, or can be set at the virtual extension line VL. For example, the second part (or end, 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 set at the virtual extension line VL. The first part 210a of each vibration structure 211 (or vibration part 211a) of the first vibration generator 210 can be aligned with or overlapped with the second part 230a of each vibration structure 211 (or vibration part 211a) of the second vibration generator 230. For example, the first part 210a of the vibration structure 211 (or vibration part 211a) of the first vibration generator 210 can be precisely aligned with or overlapped with the second part 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 portion 211a) of the first vibration generator 210 may correspond to the second portion 230a of each vibration structure 211 (or vibration portion 211a) of the second vibration generator 230. Therefore, in the vibration device 200 according to an embodiment of the present 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 may be displaced in the same direction, and thus, the displacement amount or amplitude displacement of the vibration device 200 may be maximized or increased. Consequently, the displacement amount (or bending force or flexure force) or amplitude displacement of the display panel 100 may be increased (or maximized).

[0452] In the first vibration generator 210, a first protective member 213 may be provided at the first electrode portion 211b. The first protective member 213 may protect the first electrode portion 211b. A second protective member 215 may be provided at the second electrode portion 211c. The second protective member 215 may protect 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 a plastic material, a fiber material, or a wood material, but the embodiments of the present disclosure 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 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 second connecting member) 150.

[0453] In the second vibration generator 230, a first protective member 213 may be provided at the first electrode portion 211b. The first protective member 213 may protect the first electrode portion 211b. A second protective member 215 may be provided at the second electrode portion 211c. The second protective member 215 may protect 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 from a plastic material, a fiber material, or a wood material, but the embodiments of the present disclosure are not limited thereto. For example, in the second vibration generator 230, the first protective member 213 may be formed from 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 via an adhesive member (or 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 via the adhesive member 250.

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

[0455] One or more of the first vibration generator 210 and the second vibration generator 230 according to the embodiment 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, the first adhesive layer 212 may be provided between the vibration structure 211 and the first protective member 213. For example, the first adhesive layer 212 may be provided between the first electrode portion 211b of the vibration structure 211 and the first protective member 213. The first protective member 213 may be provided at the first surface (or 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 connected to the first surface (or 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, the second adhesive layer 214 may be provided between the vibration structure 211 and the second protective member 215. For example, the second adhesive layer 214 may be provided between the second electrode portion 211c of the vibration structure 211 and the second protective member 215. The second protective member 215 may be provided at the second surface (or 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 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 may be connected or coupled 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 may be connected or coupled 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 may 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 may completely surround the entire vibration structure 211. For example, the first adhesive layer 212 and the second adhesive layer 214 may be referred to as a cover member, but embodiments of the present disclosure are not limited thereto. When the first adhesive layer 212 and the second adhesive layer 214 are a cover member, the first protective member 213 may be disposed on the first surface of the cover member, and the second protective member 215 may be disposed on the second surface of the cover member.

[0459] In the second vibration generator 230, the first adhesive layer 212 may be provided between the vibration structure 211 and the first protective member 213. For example, the first adhesive layer 212 may be provided between the first electrode portion 211b of the vibration structure 211 and the first protective member 213. The first protective member 213 may be provided at the first surface (or 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 connected to the first surface (or 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, the second adhesive layer 214 may be provided between the vibration structure 211 and the second protective member 215. For example, the second adhesive layer 214 may be provided between the second electrode portion 211c of the vibration structure 211 and the second protective member 215. The second protective member 215 may be provided at the second surface (or 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 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 may be connected or coupled 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 may be connected or coupled 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 may 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 may completely surround the entire vibration structure 211. For example, the first adhesive layer 212 and the second adhesive layer 214 may be referred to as a cover member, but embodiments of the present disclosure are not limited thereto. When the first adhesive layer 212 and the second adhesive layer 214 are a cover member, the first protective member 213 may be disposed on the first surface of the cover member, and the second protective member 215 may 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 have adhesive properties and may include a material that can be compressed and decompressed. 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 the present disclosure are not limited thereto.

[0463] One or more of the first vibration generator 210 and the second vibration generator 230 according to the embodiment of the present disclosure 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 may extend longer along the second direction Y. The first power line PL1 may be provided at the first protective member 213 and may be electrically connected to the first electrode portion 211b. For example, the first power line PL1 may be provided at the rear surface of the first protective member 213 facing the first electrode portion 211b and may be electrically connected to the first electrode portion 211b. For example, the first power line PL1 may be provided at the rear surface of the first protective member 213 directly facing the first electrode portion 211b and may be directly electrically connected to the first electrode portion 211b. As an embodiment of the present disclosure, the first power line PL1 may be electrically connected to the first electrode portion 211b 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 via a conductive material (or particles) included in the first adhesive layer 212. For example, the first power line PL1 may be electrically connected to each of the first electrode portion 211 b of the first vibration generator 210 and the first electrode portion 211 b (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 power lines protruding along a first direction X intersecting the second direction Y. The at least one or more first power lines may extend long 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, the at least one or more first power lines may enhance the uniformity of the vibration drive signal applied to the first electrode portion 211b.

[0466] The second power line PL2 of one or more of the first vibration generator 210 and the second vibration generator 230 can be disposed on the second protective member 215 and can be 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 can be 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 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 via 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 via 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 fourth electrode portion) of the second vibration generator 230.

[0467] For example, the second power lines 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 power lines protruding along the first direction X. The at least one or more second power lines may extend longer along the first direction X from at least one or more of one surface and the other surface of the second power line PL2 and may be electrically connected to the second electrode portion 211c. The at least one or more second power lines may overlap or stack with the at least one or more first power lines. Therefore, the at least one or more second 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 provided 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 to a first portion (or one side or one end) of one or more of the first power line PL1 and the second power line PL2 at a first peripheral portion of one or more of the first protective member 213 and the second protective member 215.

[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 the first power line PL1 and a second pad electrode electrically connected to a portion (or one end or one side) of the 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 an embodiment of the present disclosure may further include a flexible cable 219 .

[0471] The flexible cable 219 can be electrically connected to the pad portion 217 of one or more of the first vibration generator 210 and the second vibration generator 230. Therefore, the flexible cable 219 can provide the vibration drive signal (or sound signal) provided by the vibration drive circuit to the corresponding vibration structure 211. The flexible cable 219 according to an embodiment of the present disclosure may include a first terminal electrically connected to the first pad electrode of the pad portion 217 and a second terminal electrically connected to the 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 the present disclosure are not limited thereto.

[0472] The vibration drive circuit (or sound processing circuit) can generate an alternating current (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 be one of a positive (+) vibration drive signal and a negative (-) vibration drive signal. As an embodiment of the present 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 the present 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 driving signal may be provided to the first electrode portion 211 b of the vibration structure 211 through the second terminal of the flexible cable 219 , the first pad electrode of the pad part 217 , and the first power line PL1 .

[0473] According to an embodiment 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 including an adhesive layer that has good adhesion or attachment force relative to the first vibration generator 210 and the second vibration generator 230. For example, the adhesive member 250 can include a foam pad, a double-sided tape, a double-sided foam pad, a double-sided foam tape, or an adhesive, but embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the adhesive member 250 can include an epoxy group, an acrylic group, a silicone group, or a polyurethane group, but embodiments of the present disclosure are not limited thereto.

[0474] exist Figure 3 and Figure 4In the description related thereto, the vibration device 200 according to the embodiment of the present disclosure has been described as including a first vibration generator 210 and a second vibration generator 230 and a bonding member 250 arranged between the first vibration generator 210 and the second vibration generator 230, but the embodiments of the present disclosure are not limited thereto. For example, the vibration device 200 according to the embodiment of the present disclosure may include a plurality of (e.g., three or more) vibration generators 210 and 230 and a bonding member 250 arranged between the plurality of vibration generators 210 and 230, based on the sound pressure level characteristics and the output characteristics of the sound generated by the 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 amount 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 parts (or ends, ends, outer surfaces, or each corner) 210a and 230a of each vibration structure 211 (or vibration part 221a) of one or more of the plurality of vibration generators 210 and 230 can substantially overlap or stack without interlacing. For example, the first and second parts (or ends, ends, outer surfaces, or each corner) 210a and 230a of each vibration structure 211 (or vibration part 221a) of one or more of the plurality of vibration generators 210 and 230 can substantially overlap or stack without interlacing within the error range of the manufacturing process. For example, the first and second parts (or ends, ends, outer surfaces, or each corner) 210a and 230a of each vibration structure 211 (or vibration part 221a) of each of the plurality of vibration generators 210 and 230 can be aligned on a virtual extension line VL, or can be arranged at the virtual extension line VL. For example, the first part and the second part (or end, or end, or outer surface, or each corner) 210a and 230a of each vibration structure 211 (or vibration part 221a) 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 driving circuit 500 according to an embodiment of the present disclosure is shown. Figure 5 Shows the connection to Figure 3 The vibration driving circuit of the vibration device shown.

[0476] Reference Figures 3 to 5 The vibration driving circuit 500 according to an embodiment of the present disclosure may be electrically connected to the vibration device 200 and may generate a vibration driving signal based on a sound source to provide the vibration driving signal to the vibration device 200, thereby vibrating or displacing the vibration device 200.

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

[0478] The first amplifier 501 may generate an alternating current (AC) vibration driving signal including a first vibration driving signal and a second vibration driving signal based on a sound source.

[0479] The first amplifier 501 according to an embodiment of the present disclosure may include a first output terminal T11 outputting a first vibration driving signal and a second output terminal T12 outputting a second vibration driving 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, the 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 via the flexible cable 219, the pad portion 217, and the first power line PL1 of the first vibration generator 210. The 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 via 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 outputting a first vibration driving signal and a second output terminal T22 outputting a second vibration driving 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, so that the second vibration generator 230 shifts in the same direction as the shift 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 driving signal output from the first output terminal T21 of the second amplifier 502 may be provided to the second electrode portion 211 c via the flexible cable 219, the pad portion 217, and the second power line PL2 of the second vibration generator 230. The second vibration driving signal output from the second output terminal T22 of the second amplifier 502 may be provided to the first electrode portion 211 b 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 related thereto, the vibration drive circuit 500 according to the embodiment of the present disclosure has been described as including a first amplifier 501 and a second amplifier 502, but the embodiment of the present disclosure is not limited thereto. For example, the vibration drive circuit 500 according to the embodiment of the present disclosure may include a plurality of (e.g., three or more) 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 can provide a vibration drive signal that is used to shift each of the three or more vibration generators 210 and 230 in the same direction. According to an embodiment of the present disclosure, in order to shift each of the three or more vibration generators 210 and 230 in the same direction, the three or more vibration generators 210 and 230 can include a first group and a second group, and the plurality of amplifiers 501 and 502 can include a first amplifier group and a second amplifier group.

[0484] The vibration generators 210 of the first group (e.g., the odd-numbered vibration generators) can be shifted by a vibration drive signal applied from the amplifier 501 of the first amplifier group (e.g., the odd-numbered amplifiers), and the vibration generators 230 of the second group (e.g., the even-numbered vibration generators) can be shifted by a vibration drive signal applied from the amplifier 502 of the second amplifier group (e.g., the even-numbered amplifiers), thereby shifting three or more vibration generators 210 and 230 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 of the first group, and the second output terminal T12 can be electrically connected to the second electrode portion 211c of the vibration generator 210 of the first group. In addition, 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 of the second group, and the second output terminal T22 can be electrically connected to the first electrode portion 211b of the vibration generator 210 of the second group.

[0485] Figure 6A The displacement of the vibration generator according to the 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 an embodiment of the present disclosure, the multiple vibration generators 210 and 230 can be displaced (or vibrated) relative to the thickness direction Z of the display panel 100 based on the first amplitude DW1 of the vibration drive signal. For example, the vibration portion 211a of each of the vibration generators 210 and 230 can include a first region (or first polarization region) adjacent to the first electrode portion 211b and a second region (or second polarization region) adjacent to the second electrode portion 211c. Based on the expansion of the first region based on the positive (+) vibration drive signal and the contraction of the second region based on the negative (-) vibration drive signal, the vibration portion 211a can be displaced based on the first amplitude DW1. Therefore, the display panel 100 can be displaced (or vibrated) based on the second amplitude DW2 corresponding to the first amplitude DW1 based on the displacement of the vibration generators 210 and 230 having the first amplitude DW1.

[0487] Reference Figure 6BAccording to an embodiment 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 the third amplitude DW3 according to the vibration drive signal. The first vibration generator 210 and the second vibration generator 230 can be displaced (or vibrated) in the same direction based on the stacked structure in which the first vibration generator 210 and the second vibration generator 230 overlap each other. Therefore, the vibration device including the first vibration generator 210 and the second vibration generator 230 having a stacked structure can be displaced (or vibrated) based on a relatively larger amplitude than the vibration device including the vibration generator having a single structure. For example, the vibration portion 211a of each of the vibration generators 210 and 230 can include a first region (or first polarization region) adjacent to the first electrode portion 211b and a second region (or second polarization region) adjacent to the second electrode portion 211c. The vibration portion 211a of the first vibration generator 210 can be displaced based on the third amplitude DW3, based on the expansion of the first area based on the positive (+) vibration drive signal and the contraction of the second area based on the negative (-) vibration drive signal. At the same time, the vibration portion 211a of the second vibration generator 230 can be displaced based on the fourth amplitude DW4, based on the contraction of the first area based on the negative (-) vibration drive signal and the expansion of the second area based on the positive (+) vibration drive signal. Therefore, the display panel 100 can be displaced (or vibrated) based on the 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 being able to vibrate based on a relatively larger amplitude than the vibration of a vibration device including a vibration generator having a single structure. For example, the vibration device 200 according to an embodiment of the present disclosure can have a driving direction that matches the driving direction of a vibration device including a vibration generator having a single structure, thereby maximizing or enhancing the driving force of the vibration device 200. Therefore, the displacement amount (or bending force or flexure) 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 of the sound and / or the sound characteristics of the mid-low pitch vocal range 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 sectional view taken along line III-III' shown in FIG. Figure 8 Shown by modifying Figure 3 Therefore, in the following description, descriptions of elements other than the second vibration generator and elements related thereto will be omitted or briefly given.

[0489] Reference Figure 7 and Figure 8 In the vibration device 200 according to another embodiment of 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 vertical inversion type.

[0490] The second vibration generator 230 may be disposed on the rear surface of the first vibration generator 210 through an adhesive member 250 (or a first connecting member) in a state of being vertically inverted with respect 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 an embodiment of the present disclosure, the first protective member 213 of the first vibration generator 210 may be connected or coupled to the rear surface of the display panel 100 via the connecting member 150 (or the second connecting member). In this case, the second protective member 215 of the second vibration generator 230 may be connected or coupled to the second protective member 215 of the first vibration generator 210 via the adhesive member 250. For example, in order to simultaneously shift the first vibration generator 210 and the second vibration generator 230 in the same direction, the first electrode portion 211b of the first vibration generator 210 may be disposed closer to the display panel 100 than the second electrode portion 211c, and the second electrode portion 211c of the second vibration generator 230 may be disposed closer to the display panel 100 than the first electrode portion 211b.

[0492] According to another embodiment of the present disclosure, the second protective member 215 of the first vibration generator 210 may 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 may 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 simultaneously shift the first vibration generator 210 and the second vibration generator 230 in the same direction, the second electrode portion 211c of the first vibration generator 210 may be disposed closer to the display panel 100 than the first electrode portion 211b, and the first electrode portion 211b of the second vibration generator 230 may be disposed closer to the display panel 100 than the second electrode portion 211c.

[0493] Therefore, in the vibration device 200 according to another embodiment of the present disclosure, the second vibration generator 230 can be set at the first vibration generator 210 in a vertically inverted state. Therefore, when performing electrical connection to the vibration driving circuit, even if the electrical connection structure between the second vibration generator 230 and the vibration driving circuit is not changed, each of the first vibration generator 210 and the second vibration generator 230 can be electrically connected to the vibration driving circuit based on the same electrical connection type.

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

[0495] Reference Figures 7 to 9 The vibration driving circuit 500 according to another embodiment of the present disclosure may be electrically connected to the vibration device 200 and may generate a vibration driving signal based on a sound source to provide the vibration driving signal to the vibration device 200, thereby vibrating or displacing the vibration device 200.

[0496] The vibration driving circuit 500 according to an embodiment of the present disclosure may include a plurality of amplifiers 501 and 502 respectively connected to the plurality of vibration generators 210 and 230 constituting the vibration device 200. For example, the vibration driving circuit 500 may include a first amplifier 501 and a second amplifier 502 respectively connected to the first vibration generator 210 and the 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. The first amplifier 501 according to an embodiment of the present disclosure can 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 used in conjunction with the above reference Figure 5 The first amplifier 501 described is substantially the same, and therefore, repeated description thereof is omitted.

[0498] The second amplifier 502 according to an embodiment of the present disclosure may include a first output terminal T21 outputting a first vibration driving signal and a second output terminal T22 outputting a second vibration driving 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 shifts in the same direction as the shift 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 via 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 via the flexible cable 219, the pad portion 217, and the second power line PL2 of the second vibration generator 230.

[0500] In the vibration driving circuit 500 according to another embodiment of the present disclosure, the second vibration generator 230 may be provided at the first vibration generator 210 or attached to the first vibration generator 210 as a vertical inversion type, and thus the second amplifier 502 may 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 may be provided at the first vibration generator 210 or attached to the first vibration generator 210 without being vertically inverted. Therefore, in order to shift three or more vibration generators 210 and 230 in the same direction, the second amplifier 502 may be electrically connected to the second vibration generator 230 in a state where the positions of the first output terminal T21 and the second output terminal T22 of the second amplifier 502 have been changed. For example, Figures 7 to 9The second vibration generator 230 shown can be positioned at or attached to the first vibration generator 210 in a vertically inverted position. Therefore, 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. Therefore, the type of electrical connection 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 type of electrical connection between the first output terminal T11 and the second output terminal T12 of the first amplifier 501 and the first vibration generator 210. This can increase or enhance the ease of assembly between each of the first and second vibration generators 210 and 230 and the first and second amplifiers 501 and 502. 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 may be electrically connected to the first electrode portion 211 b of the second vibration generator 230 , and the second output terminal T22 of the second amplifier 502 may be electrically connected to the second electrode portion 211 c of the second vibration generator 230 .

[0501] exist Figures 7 to 9 In the description related thereto, the 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, the 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 order to make each of the three or more vibration generators 210 and 230 shift 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 the present disclosure, the vibration generators 210 of the first group (e.g., odd-numbered vibration generators) can be shifted in a non-vertical inversion state, and the vibration generators 230 of the second group (e.g., even-numbered vibration generators) can be shifted in a vertical inversion state. For example, the first electrode portion 211b of the vibration generator 210 of the first group can be arranged closer to the display panel 100 than the second electrode portion 211c, and the second electrode portion 211c of the vibration generator 230 of the second group can be arranged closer to the display panel 100 than the first electrode portion 211b.

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

[0504] According to another embodiment of the present disclosure, the vibration drive circuit 500 may include a plurality of (e.g., three or more) 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 causing each of the three or more vibration generators 210 and 230 to shift in the same direction. For example, a first vibration drive signal from the first output terminals T11 and T21 of the three or more 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 three or more 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 Shown Figure 10 The vibrating portion shown. 12A to 12C It is along Figure 10 The cross-sectional view taken along line IV-IV' shown in FIG. 1 and showing the modified Figures 2 to 5 Vibrating equipment as shown or Figures 7 to 9 Therefore, in the following description, repeated descriptions of elements other than the vibration structure and elements related thereto will be omitted or briefly given.

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

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

[0508] The vibration portion 211a according to an embodiment 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 the 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 may 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, which is similar to the piezoelectric material described above. Figure 3 and Figure 4 The described vibration portion 211a is substantially the same, and thus repeated description thereof may be omitted.

[0510] Each of the plurality of first portions 211a1 according to an embodiment of the present disclosure can be disposed between a plurality of second portions 211a2. Each of the plurality of second portions 211a2 can be disposed (or arranged) parallel to one another, with the first portion 211a1 located therebetween. For example, the plurality of first portions 211a1 can have a first width W1 parallel to the first direction X (or second direction Y) and a length parallel to the second direction Y (or first direction X). Each of the plurality of second portions 211a2 can have a second width W2 parallel to the first direction X (or second direction Y) and a length parallel to the second direction Y (or first direction X). The first width W1 can be the same as or different from the second width W2. For example, the first width W1 can be greater than the second width W2. Each of the plurality of first portions 211a1 can have the same size, for example, the same width, area, or volume. For example, each of the plurality of first portions 211a1 can have the same size (for example, the same width, area, or volume) within a process error range (or tolerance) that can occur during the manufacturing process. For example, the first portion 211a1 and the second portion 211a2 may include linear or bar shapes of the same size or different sizes. Thus, the vibration portion 211a may include a 2-2 composite structure and may therefore have a resonant frequency of 20 kHz 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 at least one or more of the shape, length, and thickness. For example, the first portion 211a1 may be referred to as a piezoelectric portion, a piezoelectric element, a piezoelectric layer, a vibration layer, a displacement element, a displacement layer, an inorganic portion, or an inorganic material portion, but embodiments of the present disclosure are not limited thereto.

[0511] In the vibration part 211a, multiple first parts 211a1 and multiple second parts 211a2 can be arranged (or disposed) in parallel on the same plane (or the same layer). Multiple first parts 211a1 and multiple second parts 211a2 can be arranged (or disposed) in parallel on the same plane (or the same layer) and can be connected or coupled to each other. Each of the multiple second parts 211a2 can fill the gap between two adjacent first parts of the multiple first parts 211a1. Each of the multiple second parts 211a2 can be connected or attached to the first part 211a1 adjacent to it. For example, each of the multiple second parts 211a2 can be configured to fill the gap between two adjacent first parts 211a1 and can be connected or attached to the adjacent second part 211a2. Therefore, the vibration part 211a can extend a desired size or length based on the side connection (or connection) of the first part 211a1 and the second part 211a2.

[0512] In the vibration portion 211 a , a width (or size) W2 of each of the plurality of second portions 211 a 2 may gradually decrease in a direction from a central portion to both peripheral portions (or both ends) of the vibration portion 211 a .

[0513] According to an embodiment of the present disclosure, the second portion 211a2 with the largest width W2 among the plurality of second portions 211a2 can be located at a portion where the maximum stress may be concentrated when the vibrating portion 211a vibrates in the vertical (or up-down) direction Z (or thickness direction). The second portion 211a2 with the smallest width W2 among the plurality of second portions 211a2 can be located at a portion where relatively less stress may be experienced 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 located at the center 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 located 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 the maximum stress is concentrated can be reduced or minimized. Therefore, the dip phenomenon of the sound pressure level occurring in the low-pitched vocal range can be reduced, thereby improving the flatness of the sound characteristics in the low-pitched vocal range. For example, the flatness of the sound characteristics can be the deviation level between the highest sound pressure level and the lowest sound pressure level.

[0514] In the vibration part 211a, each of the plurality of first portions 211a1 may have a different size (or width). For example, the size (or width) of each of the plurality of first portions 211a1 may gradually decrease or increase from the center portion of the vibration part 211a toward the two peripheral portions (or ends). In the vibration part 211a, based on the various natural vibration frequencies of each of the plurality of first portions 211a1 having different sizes, the sound pressure level characteristics of the sound can be enhanced and the sound reproduction frequency band can be increased.

[0515] Each of the plurality of second portions 211a2 can be disposed between the plurality of first portions 211a1. Thus, in the vibration portion 211a, the vibration energy of the connecting rod in the unit lattice of the first portion 211a1 can be increased by the corresponding second portion 211a2. Thus, the vibration characteristics can be increased, and piezoelectric characteristics and flexibility can be ensured. For example, the second portion 211a2 may include one or more of an epoxy-based polymer, an acrylic-based polymer, and a silicone-based polymer, but embodiments of the present disclosure are not limited thereto.

[0516] The plurality of second portions 211a2 according to an embodiment of the present disclosure may be configured as organic material portions. For example, the organic material portion may be disposed between the inorganic material portions and may absorb impact applied to the inorganic material portion (or the first portion), release stress concentrated on the inorganic material portion to improve the overall durability of the vibration portion 211a, and provide flexibility to the vibration portion 211a.

[0517] The plurality of second portions 211a2 according to an embodiment of the present disclosure may have a modulus and viscoelasticity lower than those of the first portion 211a1 , and thus, the second portion 211a2 may enhance the reliability of the first portion 211a1 that is susceptible to impact due to fragile characteristics.

[0518] For example, when the vibration device 200 for vibrating the display panel 100 has impact resistance and high rigidity, the vibration device 200 may have high vibration characteristics or maximum vibration characteristics. In order to make the vibration device 200 have impact resistance and high rigidity, each of the plurality of second parts 211a2 may include a material having a relatively high damping factor (tan δ) and a relatively high rigidity. For example, each of the plurality of second parts 211a2 may include a material having a damping factor (tan δ) of about 0.1 [GPa] to about 1 [GPa] and a relatively high rigidity of about 0 [GPa] to about 10 [GPa]. In addition, the damping factor (tan δ) and the rigidity characteristics may be described based on the correlation between the loss factor and the modulus. For example, the second part 211a2 may include a material having a loss factor 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 portion 211a2 may include one or more of an organic material, an organic polymer, an organic piezoelectric material, and an organic non-piezoelectric material having flexibility compared to the inorganic material portion of the first portion 211a1. For example, the second portion 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 stretching portion, a bending portion, a damping portion, or a flexible portion, but embodiments of the present disclosure are not limited thereto.

[0520] The organic material portion including the organic piezoelectric material can absorb the impact 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 an embodiment of the present disclosure may be an organic material. The organic piezoelectric material according to an embodiment of the present disclosure may be an organic material having electroactive properties. For example, the organic piezoelectric material may include at least one of polyvinylidene fluoride (PVDF), β-polyvinylidene fluoride (β-PVDF) and polyvinylidene fluoride (PVDF-TrFE), but the embodiments of the present 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 including the curable resin composition. Therefore, the organic material portion can absorb the impact 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 an embodiment of the present disclosure may include at least one of an epoxy-based polymer, an acrylic-based polymer, and a silicon-based polymer, but the embodiments of the present disclosure are not limited thereto.

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

[0523] The organic material portion including the organic non-piezoelectric material may further include a reinforcing agent, such as a reinforcing agent for enhancing the damping properties and high stiffness of the vibration device 200. For example, the reinforcing agent may be methyl methacrylate-butadiene-styrene (MBS) having a core-shell type, and its content may be from about 5 wt% to about 40 wt%. The reinforcing agent may be an elastomer having a core unit type and may have a high coupling force with an epoxy resin (e.g., an acrylic polymer). Therefore, the reinforcing agent may enhance the impact resistance or damping properties of the vibration device 200.

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

[0525] In order to maximize or increase the displacement amount 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, or end, or 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 with or overlapped with the second part (or end, or end, or outer surface, or each corner) 230a of each vibration structure 211 (or vibration part 211a) of the second vibration generator 230, without being staggered. For example, the first portion (or end, end, outer surface, or each corner) 210a of the vibration structure 211 (or vibration portion 211a) of the first vibration generator 210 can be substantially aligned with or overlapped with the second portion (or end, end, outer surface, or each corner) 230a of each vibration structure 211 (or vibration portion 211a) of the second vibration generator 230 within the error range of the manufacturing process, without being staggered. For example, the first portion (or end, end, outer surface, or each corner) 210a of each vibration structure 211 (or vibration portion 211a) of the first vibration generator 210 can be aligned on the first virtual extension line VL1 or can be arranged at the first virtual extension line VL1. The second part (or end, 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 first virtual extension line VL1, or can be precisely set at the first virtual extension line VL1. The second part (or end, 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 aligned on the first virtual extension line VL1, or can be set at the first virtual extension line VL1. The second part (or end, 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 first virtual extension line VL1, or can be set at the first virtual extension line VL1.

[0526] According to an embodiment 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 interlacing. 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 interlacing within the error range of the manufacturing process. According to an embodiment 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 on or disposed at the second virtual extension line VL2 without interlacing. 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 disposed at the second virtual extension line VL2 within the error range of the manufacturing process. Therefore, in the vibration device 200 according to an embodiment of the present disclosure, the vibration portion 211a of the first vibration generator 210 and the vibration portion 211a of the second vibration generator 230 can be displaced in the same direction, thereby maximizing or increasing the displacement amount or amplitude displacement of the vibration device 200, and thus increasing (or maximizing) the displacement amount (or bending force or flexure force) or amplitude displacement of the display panel 100.

[0527] The first electrode portion 211b may be disposed at the first surface (or top surface) of the vibration portion 211a. For example, the first electrode portion 211b may be disposed jointly or coupled 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 at the entire first surface of the vibration 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 vibration portion 211a, but embodiments of the present disclosure are not limited thereto. The first electrode portion 211b according to an embodiment of the present disclosure may be formed of a transparent conductive material, a translucent 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 at a second surface (or rear surface) opposite to or different from the first surface of the vibration portion 211a. The second electrode portion 211c may be disposed jointly or coupled 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 on the entire second surface of the vibration portion 211a. The second electrode portion 211c may have a single electrode type. For example, the second electrode portion 211c may have substantially the same shape as the vibration portion 211a, but embodiments of the present disclosure are not limited thereto. The second electrode portion 211c according to an embodiment 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.

[0529] The first electrode portion 211 b may be covered by the above-mentioned first protective member 213 . The second electrode portion 211 c may be covered by the above-mentioned 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 the present 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 be alternately and repeatedly contracted and extended 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, thereby vibrating. For example, the vibration portion 211a of each of the first vibration generator 210 and the second vibration generator 230 can be vibrated based on the vertical direction (or thickness direction Z) vibration d33 and the horizontal direction (or plane direction) vibration d31 according to the vibration drive signal applied to the first electrode portion 211b and the second electrode portion 211c. The vibration portion 211 a may increase the displacement of the vibration device 200 by contracting and expanding in the horizontal direction, thereby further improving the vibration of the vibration device 200 or the display panel.

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

[0532] Reference 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 provided on 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 provided 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 provided on the rear surface of the first protective member 213 directly 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 provided on the rear surface of the first protective member 213 directly facing the first electrode portion 211b and can be 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 provided on the second protective member 215 and can be electrically connected to the second electrode portion 211c. For example, the second power line PL2 can be provided on the rear surface of the second protective member 215 facing the second electrode portion 211c and can be electrically connected to the second electrode portion 211c. For example, the second power line PL2 may be provided at a rear surface of the second protective member 215 directly facing the second electrode portion 211 c and may be electrically connected to the second electrode portion 211 c. For example, the second power line PL2 may be provided at a rear surface of the second protective member 215 directly facing the second electrode portion 211 c and may be directly electrically connected to the second electrode portion 211 c.

[0534] Reference Figure 12B ,and Figure 12A In contrast, the first power lines PL1 of the first and second vibration generators 210 and 230 may be moved rightward and disposed relative to the first direction X. The second power lines PL2 of the first and second vibration generators 210 and 230 may be moved leftward and disposed relative to the first direction X.

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

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

[0537] According to another embodiment of the present 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. 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 disconnection caused by the overlapping of the power lines can be solved, and the problem that the thickness of the vibration device becomes thicker due to the increase in thickness caused by the overlapping of the power lines can be solved. Such a 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 vibration device according to another embodiment of the present disclosure is shown. Figures 10 to 12C Therefore, in the following description, repeated descriptions of elements other than the vibration part will be omitted or briefly given.

[0539] Reference Figure 13 In a vibration device 200 according to another embodiment of the present disclosure, a vibration portion 211a of a vibration structure 211 included in each of the vibration generators 210 and 230 may include a plurality of first portions 211a1 and a second portion 211a2 disposed between the plurality of first portions 211a1. The plurality of first portions 211a1 may be disposed 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 may be disposed to be spaced apart from each other along each of the first direction X and the second direction Y. For example, each of the plurality of first portions 211a1 may have a hexahedral shape (or a hexagonal object shape) having the same size and may be disposed in a lattice shape. Each of the plurality of first portions 211a1 may include the same Figure 3 and Figure 4 The vibration portion 211a described above and the Figures 10 to 12C The first portion 211 a 1 is described as being made of substantially the same material, and thus, the same reference numerals denote the same elements, and their repeated descriptions may be omitted.

[0541] The second portion 211a2 may be disposed between a 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 a gap or space between two adjacent first portions 211a1 or surround each of the plurality of first portions 211a1, and thus may be connected or attached to the adjacent first portions 211a1. According to an embodiment 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 portion 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 portion 211a1. The second portion 211a2 may include the same width as described above with reference to Figures 10 to 12C The second portion 211 a 2 is described as being made of substantially the same material, and thus, the same reference numerals denote the same elements, and their repeated descriptions may be omitted.

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

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

[0544] Figure 14 A vibration device according to another embodiment of the present disclosure is shown, and a modified Figures 10 to 12C Therefore, hereinafter, repeated descriptions of elements other than the vibration part may be omitted or will be briefly given.

[0545] Reference Figure 14 In a vibration device 200 according to another embodiment of the present disclosure, a vibration portion 211a of a vibration structure 211 included in each of the vibration generators 210 and 230 may include a plurality of first portions 211a1 and a second portion 211a2 disposed between the plurality of first portions 211a1. The plurality of first portions 211a1 may be spaced apart from each other along the first direction X and the 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 in 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 polygonal shape, or a ring shape. Each of the plurality of first portions 211a1 may include the same as described above with reference to Figure 3 and Figure 4 The vibration portion 211a described above and the Figures 10 to 12C The first portion 211 a 1 is described as being made of substantially the same material, and thus, the same reference numerals denote the same elements, and their repeated descriptions may 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 a 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 the same Figures 10 to 12CThe second portion 211 a 2 is described as being made of substantially the same material, and thus, the same reference numerals denote the same elements, and their repeated descriptions may be omitted.

[0548] In the vibration part 211a of each of the vibration generators 210 and 230 according to another embodiment of the present disclosure, each of the plurality of first parts 211a1 may have a flat structure in a triangular shape instead of a circular shape. For example, each of the plurality of first parts 211a1 may have a triangular plate shape.

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

[0550] According to another embodiment of the present disclosure, six adjacent first portions 211a1 among the 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 portion) of the hexagonal shape.

[0551] exist Figure 14In the description related thereto, the vibration device 200 according to another embodiment of the present disclosure has been described as including the first vibration generator 210 and the second vibration generator 230, but embodiments of the present disclosure are not limited thereto. For example, the vibration device 200 according to another embodiment of the present disclosure may include multiple (e.g., three or more) vibration generators 210 and 230. In this case, in order to maximize or increase the displacement or amplitude shift of the vibration device 200, multiple vibration generators 210 and 230 may have the same size and may overlap or stack. According to embodiments of the present disclosure, the first part 211a1 of the vibration generator 210 on the upper layer and the first part 211a1 of the vibration generator 230 on the lower layer in three or more vibration generators 210 and 230 may substantially overlap or stack without interlacing. For example, the first portion 211a1 of the vibration generator 210 that is closer to the front surface of the display panel 100 (or the vibration member) can overlap, while the first portion 211a1 of the vibration generator 230 that is less close to the front surface of the display panel 100 (or the vibration member) can overlap. For example, the first portion 211a1 of the vibration generator 210 that is arranged on the upper layer among three or more vibration generators 210 and 230 and the first portion 211a1 of the vibration generator 230 that is arranged on the lower layer among three or more vibration generators 210 and 230 can basically overlap or stack without interlacing within the error range of the manufacturing process. In addition, the second portion 211a2 of the vibration generator 210 that is arranged on the upper layer among three or more vibration generators 210 and 230 and the second portion 211a2 of the vibration generator 230 that is arranged on the lower layer among three or more vibration generators 210 and 230 can basically overlap or stack without interlacing. For example, the second portions 211a2 of the vibration generators 210 disposed in the upper layer among the three or more vibration generators 210 and 230 and the second portions 211a2 of the vibration generators 230 disposed in the lower layer among the three or more vibration generators 210 and 230 may substantially overlap or stack without being staggered within the error range of the manufacturing process. For example, the second portions 211a2 of the vibration generators 210 disposed closer to the front surface of the display panel 100 (or the vibration member) may overlap, while the second portions 211a2 of the vibration generators 230 disposed less close to the front surface of the display panel 100 (or the vibration member) may overlap.

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

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

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

[0555] The plurality of vibration structures 200A to 200D may be spaced apart from one another in each of the first direction X and the second direction Y. For example, the plurality of vibration structures 200A to 200D may be electrically separated and arranged while being spaced apart from one another along each of the first direction X and the second direction Y. For example, each of the plurality of 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 vibration membrane, a displacement generator, a vibration membrane, a displacement structure, a sound generating structure, a sound generator, a tiled vibration array, a tiled vibration array module, or a tiled vibration membrane, but embodiments of the present disclosure are not limited thereto.

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

[0557] Each of the plurality of vibration structures 200A to 200D according to an embodiment of the present disclosure may have a quadrangular shape. For example, each of the plurality of vibration structures 200A to 200D may have a quadrangular shape with a width of approximately 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 vibration structures 200A to 200D can be arranged or tiled at a certain interval (or distance), and thus can be implemented as a vibration device (or a single vibration device or a vibration device) that is driven as a complete unit rather than being driven independently. For example, multiple vibration structures 200A to 200D can be electrically separated and spaced a distance apart from each other. According to an embodiment of the present disclosure, relative to the first direction X, the first separation distance D1 between the multiple vibration structures 200A to 200D can be 0.1 mm or greater and less than 3 cm, but the embodiments of the present disclosure are not limited thereto. In addition, relative to the second direction Y, the second separation distance D2 between the multiple vibration structures 200A to 200D can be 0.1 mm or greater and less than 3 cm, but the embodiments of the present 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 an embodiment of the present disclosure, the plurality of vibration structures 200A to 200D can be arranged or tiled with separation distances (or intervals) D1 and D2 of 0.1 mm or greater and less than 3 cm, and thus can be driven as a vibration device, thereby increasing the reproduction frequency band and sound pressure level characteristics of the sound generated based on a single vibration of the plurality of vibration structures 200A to 200D. For example, the plurality of vibration 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 vibration structures 200A to 200D and increase the sound pressure level characteristics of the low-pitched vocal range (for example, the sound pressure level characteristics in 500 Hz or lower).

[0560] According to an embodiment of the present disclosure, in the case where a plurality of vibration structures 200A to 200D are arranged with intervals (or distances) D1 and D2 less than 0.1 mm or are arranged without intervals (or distances) 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 an embodiment of the present disclosure, when multiple vibration structures 200A to 200D are arranged at intervals (or distances) D1 and D2 of 3 cm or more, the multiple vibration structures 200A to 200D can be driven independently of each other due to the independent vibration of each of the multiple vibration structures 200A to 200D. Therefore, the reproduction frequency band and sound pressure level characteristics of the sound generated by the vibration of the multiple vibration structures 200A to 200D can be reduced. For example, when the multiple vibration 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 vocal range (e.g., 500 Hz or less) can be reduced.

[0562] According to an embodiment of the present disclosure, when a plurality of vibration structures 200A to 200D are arranged at intervals (or distances) of 5 mm, each of the plurality of vibration structures 200A to 200D may not be perfectly driven as a vibration device, and therefore, each of the sound characteristics and sound pressure level characteristics of a low-pitched vocal band (e.g., 200 Hz or less) may be reduced.

[0563] According to another embodiment of the present disclosure, when multiple vibration structures 200A to 200D are arranged at intervals (or distances) of 1 mm, each of the multiple vibration structures 200A to 200D can be driven as a vibration device, thereby increasing the reproduction frequency band of the sound and increasing the sound of the low-pitched vocal band (e.g., a sound pressure level characteristic of 500 Hz or less). For example, when multiple vibration 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 optimization of the separation distance between the multiple vibration 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 a single vibration of the multiple vibration structures 200A to 200D. Therefore, both the sound characteristics and the sound pressure level characteristics may be increased in the low-pitched vocal range and the reproduced vocal range of the sound generated based on the large-area vibration of each of the first vibration generator 210 and the second vibration generator 230 .

[0564] Therefore, in order to achieve a single vibration of the multiple vibration structures 200A to 200D (or a vibration device), the separation distance between the multiple vibration structures 200A to 200D can be adjusted to 0.1 mm or more and less than 3 cm. In addition, in order to achieve a single vibration of the multiple vibration structures 200A to 200D (or a vibration device) and increase the sound pressure level characteristics of the sound of the low-pitched vocal range, the separation distance between the multiple vibration structures 200A to 200D can be adjusted to 0.1 mm or more and less than 5 mm.

[0565] Each of the first vibration generator 210 and the second vibration generator 230 according to an embodiment of the present disclosure may include first to fourth vibration structures 200A to 200D that are electrically disconnected from each other and disposed spaced apart from each other along each of the first direction X and the second direction Y. For example, the first to fourth vibration structures 200A to 200D may be arranged or tiled in a 2×2 form.

[0566] According to an embodiment of the present disclosure, the first vibration structure 200A and the second vibration structure 200B may be spaced apart from each other along the 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 the 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 to fourth vibration structures 200A to 200D according to the embodiment of the present disclosure may include a vibration portion 211 a , a first electrode portion 211 b , and a second electrode portion 211 c .

[0568] The vibration portion 211a may include a ceramic-based material capable of achieving relatively high vibration. For example, the vibration portion 211a may include a 1-3 composite structure having piezoelectric characteristics of a 1-3 vibration mode or a 2-2 composite structure having piezoelectric characteristics of a 2-2 vibration mode. For example, the vibration portion 211a may include a first portion 211a1 and a second portion 211a2, similar to the above reference Figure 3 The vibration portion 211a described, or similar to that of reference Figures 10 to 14 The vibration portion 211 a described in any one of the preceding claims, therefore, the same reference numerals denote the same elements and their repeated description may be omitted.

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

[0570] The first electrode portion 211b may be provided at the first surface of the vibration portion 211a and may be electrically connected to the first surface of the vibration portion 211a. For example, the first electrode portion 211b may be connected to the first surface of the vibration portion 211a. Figures 2 to 14 The first electrode portion 211 b described in any one of the preceding claims is substantially the same, and thus, the same reference numerals denote the same elements, and repeated descriptions thereof may be omitted.

[0571] The second electrode portion 211c may be provided at the second surface of the vibration portion 211a and may be electrically connected to the second surface of the vibration portion 211a. For example, the second electrode portion 211c may be connected to the second surface of the vibration portion 211a. Figures 2 to 14 The second electrode portion 211 c described in any one of the preceding claims is substantially the same, and thus, the same reference numerals denote the same elements, and repeated descriptions thereof 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 provided at 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 provided at the first surface of each of the plurality of vibration structures 200A to 200D. Thus, 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. Thus, 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] The first protective member 1213 according to an embodiment of the present disclosure can be provided at the first surface of each of the plurality of vibration structures 200A to 200D by the first adhesive layer 1212. For example, the first protective member 1213 can be provided at the first surface of each of the plurality of vibration structures 200A to 200D by a film lamination process using the first adhesive layer 1212. For example, the first protective member 1213 can be directly provided at the first surface of each of the plurality of vibration structures 200A to 200D by a film lamination process using the first adhesive layer 1212. Therefore, the plurality of vibration structures 200A to 200D can be integrated (or provided) or tiled with the first protective member 1213 to have specific intervals D1 and D2. Therefore, the plurality of vibration structures 200A to 200D can be implemented as a single film or a single structure.

[0575] The second protective member 1215 may be provided at 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 provided at the second surface of each of the plurality of vibration structures 200A to 200D. Thus, 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 an embodiment of the present disclosure, the second protective member 1215 can be provided at the second surface of each of the plurality of vibration structures 200A to 200D via the second adhesive layer 1214. For example, the second protective member 1215 can be provided at the second surface of each of the plurality of vibration 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 provided at the second surface of each of the plurality of vibration 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 coupled to each other to surround the plurality of vibration structures 200A to 200D. Therefore, the plurality of vibration structures 200A to 200D can be integrated (or provided) or tiled with the second protective member 1215 to have specific intervals D1 and D2. Therefore, the plurality of vibration structures 200A to 200D can be implemented as a single film or a single structure.

[0577] Each of the first protective member 1213 and the second protective member 1215 according to an embodiment of the present disclosure may be formed of a plastic material, a fiber material, or a wood material, but the embodiment of the present disclosure is 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 via a connecting member (or a second connecting member).

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

[0579] The second adhesive layer 1214 may be provided between the second surfaces of each of the plurality of vibration structures 200A to 200D and between the plurality of vibration 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 that faces the second surface of each of the first vibration generator 210 and the second vibration generator 230. For example, the second adhesive layer 1214 may be provided on the second surface of each of the plurality of vibration structures 200A to 200D and fill the space between the plurality of vibration structures 200A to 200D.

[0580] The first adhesive layer 1212 and the second adhesive layer 1214 can be connected to each other between the multiple vibration structures 200A to 200D. Therefore, each of the multiple vibration 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 multiple vibration structures 200A to 200D. For example, the first adhesive layer 1212 and the second adhesive layer 1214 can be referred to as a cover member, but the embodiments of the present disclosure are not limited thereto. When the first adhesive layer 1212 and the second adhesive layer 1214 are both cover members, the first protective member 1213 can be provided at the first surface of the cover member, and the second protective member 1215 can be provided at the second surface of the cover member.

[0581] Each of the first adhesive layer 1212 and the second adhesive layer 1214 according to an embodiment of the present disclosure may include an electrically insulating material having adhesive properties and may include a material that can be compressed and decompressed. For example, each of the first adhesive layer 1212 and the second adhesive layer 1214 may include an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane resin, but the 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 and second vibration generators 210 and 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 and second power lines PL1 and PL2 .

[0583] The first power line PL1 can be provided on the first surface of the first protective member 1213 facing the first surface of each of the first vibration generator 210 and the second vibration generator 230. For example, in the first protective member 1213, the first surface can be the front surface or the opposite surface of the electrode. The first power line PL1 can 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 can 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 can 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 can 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] The first power line PL1 according to an embodiment of the present disclosure may include a (1-1)th power line PL11 and a (1-2)th power line PL12 arranged along the second direction Y. For example, the (1-1)th 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) among 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 among the plurality of vibration structures 200A to 200D. The (1-2)th 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 among the plurality of vibration structures 200A to 200D. For example, the second vibration structure 200B and the fourth vibration structure 200D may be arranged at a second column parallel to the second direction Y among the plurality of vibration structures 200A to 200D.

[0585] The second power line PL2 can be provided on the first surface of the second protective member 1215 facing the second surface of each 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 via 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 via a conductive material (or particles) included in the second adhesive layer 1214.

[0586] The second power line PL2 according to an embodiment of the present disclosure may include a (2-1)th power line PL21 and a (2-2)th power line PL22 arranged along the second direction Y. For example, the (2-1)th 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) among 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 among the plurality of vibration structures 200A to 200D. The (2-2)th 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 the second column parallel to the second direction Y among the plurality of vibration structures 200A to 200D. For example, the second vibration structure 200B and the fourth vibration structure 200D may be arranged at a second column parallel to the second direction Y among the plurality of vibration structures 200A to 200D.

[0587] The pad portion 1217 may be provided at each of the first vibration generator 210 and the second vibration generator 230 to be electrically connected to a portion (or end) of at least one or more of the first power line PL1 and the second power line PL2. The pad portion 1217 according to an embodiment of the present disclosure 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 may be commonly connected to a portion (or one end) of each of the (1-1)th power line PL11 and the (1-2)th power line PL12 of the first power line PL1. For example, a portion (or one end) of each of the (1-1)th power line PL11 and the (1-2)th power line PL12 may branch from the first pad electrode.

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

[0590] According to an embodiment of the present disclosure, each of the first power line PL1, the second power line PL2, and the pad portion 1217 may 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 the pad portion 1217 provided 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 by the vibration drive circuit to each of the first vibration generator 210 and the second vibration generator 230. The flexible cable 1219 according to an embodiment of the present disclosure may include a first terminal electrically connected to the first pad electrode of the pad portion 1217 and a second terminal electrically connected to the 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 the present disclosure may include a plurality of vibration structures 200A to 200D, which are implemented as a single vibrator when not independently driven, and can therefore be driven as a large-area vibrator based on the single vibration of the plurality of vibration structures 200A to 200D. For example, the plurality of vibration structures 200A to 200D can be a single vibrator arranged (or tiled) at specific intervals D1 and D2. Therefore, the vibration device 200 can vibrate a large area of ​​a display panel or a vibrating object (or a vibrating member), or can vibrate itself in a large area, thereby increasing or enhancing the sound characteristics and sound pressure level characteristics in the low-pitched vocal cords and the reproduced vocal cords of the sound output from the display panel or the vibrating object (or vibrating member).

[0594] Reference 16A to 16D, the 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 first vibration generator 210 located at the upper layer among the plurality of vibration generators and the first electrode portion 211b of the second vibration generator 230 located at the lower layer among the plurality of vibration generators can be connected to the first power line PL1. The second electrode portion 211c of the first vibration generator 210 located at the upper layer among the plurality of vibration generators and the second electrode portion 211c of the second vibration generator 230 located at the lower layer among the plurality of vibration generators can be connected to the second power line PL2. For example, the first electrode portion 211b of the vibration generator 210 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 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 among the plurality of vibration generators and the first electrode portion 211b provided at the second vibration generator 230 among the plurality of vibration generators may be connected to the first power line PL1. The second electrode portion 211c provided at the first vibration generator 210 among the plurality of vibration generators and the second electrode portion 211c provided at the second vibration generator 230 among the plurality of vibration generators may be connected to the second power line PL2.

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

[0596] Reference 16B to 16D, the first power line PL1 connected to the first electrode portion 211b of the first vibration generator 210 disposed in the upper layer among the multiple vibration generators may not overlap with the second power line PL2 connected to the second electrode portion 211c of the first vibration generator 210 disposed in the upper layer among the multiple vibration generators. For example, the first power line PL1 connected to the first electrode portion 211b of the first vibration generator 210 disposed in the multiple vibration generators may not overlap with the second power line PL2 connected to the second electrode portion 211c of the first vibration generator 210 disposed in the multiple vibration generators. The first power line PL1 connected to the first electrode portion 211b of the second vibration generator 230 disposed in the lower layer 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 disposed in the lower layer among the multiple vibration generators. For example, a first power line PL1 connected to a first electrode portion 211b of a second vibration generator 230 among the plurality of vibration generators may not overlap with a second power line PL2 connected to a second electrode portion 211c of a second vibration generator 230 among the plurality of vibration generators. For example, the first electrode portion 211b of a vibration generator 210 positioned 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 positioned 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. 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 disconnection caused by the overlapping of the power lines can be solved, and the problem of the thickness of the vibration device becoming thicker due to the increased thickness caused by the overlapping of the power lines can be solved.

[0598] Reference Figure 16C, the first power line PL1 of the first vibration generator 210 may 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. Figure 16A In comparison, the second power lines PL2 of the first vibration generator 210 and the second power lines PL2 of the second vibration generator 230 can be arranged to move leftward and rightward relative to the first direction X. Therefore, all the first power lines PL1 and the second power lines PL2 of each of the first vibration generator 210 and the second vibration generator 230 can be arranged to not overlap. This can prevent disconnection caused by overlapping power lines, and can also solve the problem of the vibration device becoming thicker due to the increased thickness caused by overlapping power lines.

[0599] Reference Figure 16D , the first power line PL1 of the first vibration generator 210 may 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. 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 arranged to move leftward and rightward relative to the first direction X. 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 arranged to not overlap. This can prevent disconnection caused by overlapping power lines, and can also solve the problem of the vibration device becoming thicker due to the increased thickness caused by overlapping power lines.

[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 arranged 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 arranged 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 zigzag shape. For example, the first electrode portion 211b of the first vibration structure 200A of the first vibration generator 210 can be arranged on the surface facing the first protective member 1213. For example, the first electrode portion 211b of the second vibration structure 200B can be arranged 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 may be connected to the first power line PL1, and the first electrode portion 211b of the second vibration structure 200B of the first vibration generator 210 may be connected to the second power 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 arranged 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 arranged 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 zigzag shape. For example, the first electrode portion 211b of the first vibration structure 200A of the second vibration generator 230 can be arranged 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 arranged 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 may be connected to the first power line PL1, and the first electrode portion 211b of the second vibration structure 200B of the second vibration generator 230 may be connected to the second power line PL2.

[0602] According to another embodiment of the present disclosure, the first electrode portion 211b of the first vibration structure 200A of the first vibration generator 210 may 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 may be connected to the first power line PL1. The first electrode portion 211b of the first vibration structure 200A of the second vibration generator 230 may 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 may be connected to the first power line PL1.

[0603] According to another embodiment of the present disclosure, 16B to 16D The description of the first power line PL1 and / or the second power line PL2 in the same manner may also apply to Figure 16E .

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

[0605] Figure 17 Shown is a device according to another embodiment of the present disclosure, and is along Figure 1 A cross-sectional view taken along line II' shown in FIG. Figure 17 An embodiment of the present disclosure is shown wherein the plate is further configured in Figures 2 to 16E In the device shown in FIG.

[0606] Reference Figure 17 The device according to another embodiment of the present disclosure may include a display panel 100 for displaying an image and a vibration device 200 for vibrating the display panel 100 on a rear surface (or backside surface) of the display panel 100. The device according to another embodiment of the present disclosure may further 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 may be the same as that described above with reference to Figures 2 to 16E Each of the described display panel 100 and the vibration device 200 is substantially the same, and thus, repeated descriptions thereof may be omitted or will be briefly given.

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

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

[0610] The plate 170 according to an embodiment of the present disclosure may include a plurality of opening portions. The plurality of opening portions may be configured to have a predetermined size and a predetermined interval (or distance). For example, the plurality of opening portions 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 opening portions, the 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 the vibration caused by the plate 170 may be minimized, thereby increasing the sound pressure characteristics of the sound generated by the vibration of the display panel 100. For example, the plate 170 including a plurality of openings may have a grid shape. For example, the plate 170 including a plurality of openings may be a grid plate.

[0611] According to an embodiment of the present disclosure, the board 170 may be connected or coupled to the rear surface of the display panel 100. For example, when the display panel 100 is a light-emitting display panel, the board 170 may be provided at the rear surface of the encapsulation portion of the light-emitting display panel. The board 170 may be configured as a structure provided at the rear surface of the encapsulation portion or coupled to the rear surface of the encapsulation portion. The board 170 may dissipate heat generated in the display panel 100. For example, the board 170 may be referred to as a heat dissipation member, a heat dissipation plate, or a radiator, but the embodiments of the present disclosure are not limited thereto. For example, when the board 170 is configured as a structure provided at the rear surface of the encapsulation portion or coupled to the rear surface of the encapsulation portion, the first support member 310 may be omitted.

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

[0613] According to an embodiment of the present disclosure, based on the rigidity of the board 170, the displacement amount (or bending force or flexure) or amplitude displacement (or vibration width) of the display panel 100 in which the board 170 is provided can be reduced as the thickness of the board 170 increases. Therefore, it is possible to reduce the sound pressure level characteristics and sound characteristics of the low-pitched vocal range of the sound generated based on the displacement (or vibration) of the display panel 100.

[0614] According to an embodiment of the present disclosure, the displacement amount of the display panel 100 may be affected by the contact area between the vibration device 200 and the plate 170 in addition to the thickness of the plate 170. For example, Figure 18 As shown in FIG. 1 , when the same force is applied based on the thickness of the plate 170, as the contact area between the vibration device 200 and the plate 170 or the attachment area of ​​the vibration device 200 gradually decreases, the displacement amount of the display panel 100 may increase. For example, when the thickness of the plate 170 is 0.25 mm, based on the displacement of the vibration device 200 having the first size ( Figure 18 The amplitude shift (or shift amount) of the display panel 100 based on the thick solid line in FIG. 1 may be greater than the shift (or shift amount) based on the vibration device 200 having a second size greater than the first size. Figure 18). Therefore, the vibration device 200 according to an embodiment 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. In addition, the vibration device 200 according to an embodiment of the present disclosure may include a plurality of vibration generators 210 and 230 having a first size and overlapping each other, thereby increasing or maximizing the displacement of the display panel 100, thereby increasing or enhancing the sound pressure level characteristics of the sound generated based on the displacement of the display panel 100 and the sound characteristics of the low-pitched vocal cords. Therefore, in a device according to another embodiment of 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 stacking 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, the plate 170 may have a thickness of 0.1 mm to 0.75 mm, but embodiments of the present disclosure are not limited thereto.

[0615] The board 170 according to an embodiment of the present disclosure may be coupled or connected to the rear surface of the display panel 100 through a board connection member (or fourth connection member) 190 .

[0616] According to an embodiment of the present disclosure, the board connecting member 190 may include a material including an adhesive layer that has good adhesion or adhesion to the rear surfaces of the display panel 100 and the vibration device 200, respectively. For example, the board connecting member 190 may include a foam pad, double-sided tape, double-sided foam pad, double-sided foam tape, or adhesive, but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the board connecting member 190 may include an epoxy group, an acrylic group, a silicone group, or a polyurethane group, but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the board connecting member 190 may be the same as the adhesive layer of the connecting member 150, but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the board connecting member 190 may include an acrylic material, which has relatively better adhesion and hardness than polyurethane, thereby effectively transmitting the vibration of the vibration device 200 to the display panel 100 or the vibrating object. As another embodiment of the present disclosure, the adhesive layer of the board connecting member 190 may be different from the adhesive layer of the connecting member 150.

[0617] The vibration device 200 may be connected or coupled to the rear surface of the plate 170 through the above-described connection member 150 , and thus may be supported by or suspended at the rear surface of the plate 170 .

[0618] The plate 170 according to the embodiment of the present disclosure can be connected or coupled to the front surface of the vibration device 200 through the above-mentioned connecting member 150. For example, the plate 170 can be set at the topmost vibration generator among the multiple vibration generators 210 and 230. For example, the plate 170 can be connected or coupled to the topmost vibration generator among the multiple vibration generators 210 and 230 of the vibration device 200 through 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 through the connecting member 150. The plate 170 according to the embodiment of the present disclosure can be integrated into the vibration device 200, or can be provided as an element of the vibration device 200. For example, the plate 170 and the vibration device 200 can be configured as a structure or a component (or module) that is provided as one body. Therefore, when the board 170 is disposed between the rear surface of the display panel 100 and the vibration device 200 , an assembly process between the display panel 100 and the vibration device 200 may be easily performed based on component integration (or modularization) between the board 170 and the vibration device 200 .

[0619] In the case where the plate 170 and the vibration device 200 according to an embodiment of the present disclosure are configured as a structure or are provided as an integrated component (or module), the vibration object may be configured as a vibration plate. The plate 170 and the vibration device 200 may be provided at a non-display panel. The plate 170 and the vibration device 200 may be connected or coupled to each other by a connecting member 150. For example, the vibration object may include a display panel including pixels configured to display an image, or may include a non-display panel. For example, the vibration object may include a display panel including pixels configured to display an image, or may be one or more of wood, plastic, glass, cloth, paper, leather, vehicle interior materials, vehicle glass windows, building interior ceilings, building glass windows, building interior materials, aircraft interior materials, aircraft glass windows, etc., but the embodiments of the present disclosure are not limited thereto. For example, the vibration object may include one or more of the following: a display panel including pixels configured to display an image, a screen panel onto which an image is projected from a display device, a lighting panel, a signage panel, a vehicle interior material, a vehicle glass window, a vehicle exterior material, a building ceiling material, a building interior material, a building glass window, an aircraft interior material, an aircraft glass window, and a reflector, but the embodiments of the present disclosure are not limited thereto. For example, the 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 the embodiments of the present disclosure are not limited thereto. For example, the vibration object may include a display panel including pixels configured to display an image, or 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 the embodiments of the present disclosure are not limited thereto.

[0620] According to an embodiment of the present disclosure, the board 170 and the vibration device 200 may be provided at the non-display panel. The board 170 may be coupled or connected to the module (or structure) of the vibration device 200 through the connection member 150. Therefore, the board 170 and the module (or structure) of the vibration device 200 may vibrate the non-display panel to achieve sound and / or tactile feedback.

[0621] According to another embodiment of the present disclosure, when the plate 170 and the vibration device 200 are configured as a structure or are provided as an integrated component (or module), the plate 170 can be implemented as a vibration object (or vibration plate). Therefore, sound 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 include one or more materials of stainless steel, aluminum (Al), magnesium (Mg), Mg alloy, Mg-Li alloy and Al alloy, but the embodiments of the present 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 include a single non-metallic material or a composite non-metallic material of one or more of wood, plastic, glass, cloth, paper and leather.

[0622] Therefore, in a device according to another embodiment of the present disclosure, as described above with reference to Figures 2 to 16E As described above, based on the stacked structure of the vibration generators 210 and 230, the sound pressure level characteristics of the sound generated based on the displacement of the display panel 100 and the sound characteristics of the low-pitched vocal cords can be increased or enhanced. In addition, in a device according to another embodiment of the present disclosure, the resonant frequency of the vibration device 200 can be lowered by the plate 170, and the heat of the display panel 100 can be dissipated by the plate 170.

[0623] Figure 19 Shown is a device according to another embodiment of the present disclosure, and is along Figure 1 Another cross-sectional view taken along line II' shown in FIG.

[0624] Reference Figure 19 , an apparatus according to another embodiment of the present disclosure may include a display panel 100 and a vibration apparatus 200. The apparatus according to another embodiment of the present disclosure may further include a spacer member 700 between the display panel 100 and the vibration apparatus 200.

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

[0626] The vibration device 200 may be fixed to the support member 300 by the spacer member 700. For example, the center of the vibration device 200 may be fixed to the support member 300 by the spacer member 700. Therefore, the tilt phenomenon in the frequency of 3 kHz to 4 kHz may be more 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 metal layer and the second metal layer may include a material with high thermal conductivity or high thermal conductivity. For example, the first metal layer and the second metal layer may include aluminum (Al), but the embodiments of the present disclosure are not limited thereto. The core layer may be disposed between the first metal layer and the second metal layer. The core layer may include a plastic material. For example, the core layer may include polyethylene and polypropylene, etc., but the embodiments of the present disclosure are not limited thereto. As another example, the core layer may include a mixed material of magnesium hydroxide (Mg(OH)2), ethylene vinyl acetate, and polyethylene, etc. Adhesive layers are respectively disposed between the first metal layer and the core layer and between the second metal layer and the core layer. The adhesive layers may include an adhesive, a hot melt adhesive, or a double-sided tape, but the embodiments of the present disclosure are not limited thereto. When the second support member 330 includes the first metal layer, the core layer, and the 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 spacer member 700 may be configured such that the spacer member 700 can contact the thickness of the support member 300 .

[0629] The spacer member 700 may be configured to have a size that is less than or equal to the size of the vibration device 200. For example, the spacer member 700 may overlap with the vibration device 200. Therefore, the spacer member 700 may be fixed between the vibration device 200 and the support member 300, and thus the tilting phenomenon caused by the vibration of the vibration device 200 may be reduced. For example, the spacer member 700 may overlap with the vibration device 200. For example, the spacer member 700 may be configured to correspond to the center of the vibration device 200. For example, the spacer member 700 may have a size of 20 mm × 20 mm, but embodiments of the present disclosure are not limited thereto. For example, the spacer member 700 may have a quadrangular shape (or a square shape) or a rectangular shape, but embodiments of the present disclosure are not limited thereto.

[0630] The spacer member 700 may include a material for absorbing or adjusting vibrations. For example, the spacer member 700 may include one or more materials of silicon-based polymers, polyolefins, paraffin wax, and acrylic polymers, but the embodiments of the present disclosure are not limited thereto.

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

[0632] For example, the spacer member 700 may be formed of the same material as the vibration device 200. When the spacer member 700 is formed of the same material as the vibration device 200, the level of a signal applied to the spacer member 700 may be adjusted, and thus, the resonance of the vibration device 200 may be easily adjusted.

[0633] For example, the plurality of second portions may be provided at the periphery of the vibration device 200. The spacer member 700 provided at a position corresponding to the vibration device 200 may be provided at a position corresponding to the plurality of first portions. For example, the spacer member 700 may be provided to correspond to the plurality of first portions rather than to the plurality of second portions. For example, the end portion of the spacer member 700 may be provided to correspond to the plurality of first portions.

[0634] Figure 20 A vibration device according to another embodiment of the present disclosure is shown. Figure 21 It is along Figure 20 A cross-sectional view taken along line VI-VI' shown in FIG. Figure 20 and Figure 21 Shown by Figures 2 to 4 Therefore, in the following, the description of the elements other than the spacer member will be omitted or briefly given below. In addition, the description of the spacer member can be compared with the above reference Figure 19 Descriptions given are the same or similar and thus are omitted or will be briefly given below.

[0635] Reference Figure 20 and Figure 21A vibration device 200 according to another embodiment of the present disclosure 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 the rear surface of the display panel 100 by a connecting member 150 (or a second connecting member) or disposed at the rear surface of the display panel 100. The second vibration generator 230 may be connected to the first vibration generator 210 by an adhesive member 250 (or a first connecting member) or disposed at the first vibration generator 210.

[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 provided between the vibration structure 211 and the first protective member 213. For example, the first adhesive layer 212 may be provided 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 provided between the vibration structure 211 and the second protective member 215. For example, the second adhesive layer 214 may be provided between the second electrode portion 211c of the vibration structure 211 and the second protective member 215.

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

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

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

[0641] The device according to another embodiment of the present disclosure may further include a plate. For example, as described above with reference to Figure 17 As mentioned above, 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 an apparatus according to another embodiment of the present disclosure, a spacer member may be further provided in the vibration apparatus, thereby providing the apparatus 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 sectional view taken along line VII-VII' shown in FIG. Figure 22 and Figure 23 By adding a spacer member to the above reference Figures 10 to 12C Therefore, in the following, the description of the elements other than the spacer member will be omitted or briefly given below. In addition, the description of the spacer member can be the same as that of the above reference Figure 19 Descriptions given are the same or similar and thus are omitted or will be briefly given below.

[0644] Reference Figures 22 to 23 In a vibration device 200 according to another embodiment of 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 spacer member 700 may be positioned at the lowest vibration generator among the plurality of vibration generators. For example, the spacer member 700 may be positioned at the second vibration generator 230. The spacer member 700 may further be positioned at the center of the vibration device 200. For example, the spacer member 700 may be positioned at the center of the first vibration generator 210 and the center of the second vibration generator 230. For example, the spacer member 700 may overlap with the plurality of vibration generators 210 and 230. For example, the spacer member 700 may overlap with the vibration structure 211. For example, the spacer member 700 may be positioned entirely above the plurality of first portions 211a1 rather than above the plurality of second portions 211a2. For example, the spacer member 700 may be positioned entirely above the plurality of first portions 211a1. For example, the ends of the spacer member 700 may correspond to the plurality of first portions 211a1. Because the spacer member 700 is positioned 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 tilt phenomenon can be more 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 A cross-sectional view taken along line VIII-VIII' shown in FIG. Figure 24 and Figure 25 By adding a spacer member to the above reference Figures 15 to 16E Therefore, in the following, the description of the elements other than the spacer member will be omitted or briefly given below. In addition, the description of the spacer member can be the same as that of the above reference Figure 19 Descriptions given are the same or similar and thus are omitted or will be briefly given below.

[0647] Reference Figure 24 and Figure 25 In the vibration device 200 according to another embodiment of 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 a plurality of vibration structures 200A to 200D. Figure 24 and Figure 25 , an example in which four vibration structures are provided is shown, and each of the first vibration generator 210 and the second vibration generator 230 according to an embodiment 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 first to fourth vibration structures 200A to 200D. For example, the first to fourth vibration structures 200A to 200D may be electrically disconnected from each other and may be separated from each other in the first direction X and the 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 to fourth vibration structures 200A to 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 part 211 a included in each of the first vibration generator 210 and the second vibration generator 230 may include a plurality of first parts 211 a 1 and a second part 211 a 2 disposed between the plurality of first parts 211 a 1 .

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

[0651] The first spacer member 701 may be disposed at the first vibration structure 200A. For example, the first spacer 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 spacer member 701 may be disposed at the center of the first vibration structure 200A. For example, the first spacer member 701 may be disposed at the plurality of first portions 211a1 of the vibration structure 211 of the first vibration structure 200A. For example, the first spacer member 701 may be disposed entirely above the plurality of first portions 211a1. For example, the first spacer member 701 may be disposed entirely above the plurality of first portions 211a1, rather than being disposed on the plurality of second portions 211a2. For example, the ends of the first spacer member 701 may correspond to the plurality of first portions 211a1.

[0652] For example, the second spacer member 702 may be disposed at the second vibration structure 200B. For example, the second spacer 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 spacer member 702 may be disposed at the center of the second vibration structure 200B. For example, the second spacer member 702 may be disposed at the plurality of first portions 211a1 of the vibration structure 211 of the second vibration structure 200B. For example, the second spacer member 702 may be disposed entirely above the plurality of first portions 211a1. For example, the second spacer member 702 may be disposed entirely above the plurality of first portions 211a1, rather than being disposed on the plurality of second portions 211a2. For example, the ends of the second spacer member 702 may correspond to the plurality of first portions 211a1.

[0653] For example, the third spacer member 703 may be disposed at the third vibration structure 200C. For example, the third spacer 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 spacer member 703 may be disposed at the center of the third vibration structure 200C. For example, the third spacer member 703 may be disposed at the plurality of first portions 211a1 of the vibration structure 211 of the third vibration structure 200C. For example, the fourth spacer member 704 may be disposed at the fourth vibration structure 200D of each of the first vibration generator 210 and the second vibration generator 230. The fourth spacer member 704 may be disposed at the center of the fourth vibration structure 200D. For example, the fourth spacer member 704 may be disposed at the plurality of first portions 211a1 of the vibration structure 211 of the fourth vibration structure 200D. For example, the third spacer member 703 and the fourth spacer member 704 may be disposed entirely above the plurality of first portions 211a1. For example, the third and fourth spacer members 703 and 704 may be disposed entirely above the plurality of first portions 211a1 rather than above the plurality of second portions 211a2. For example, the ends of the third and fourth spacer members 703 and 704 may correspond to the plurality of first portions 211a1. According to an embodiment of the present disclosure, a spacer member may be disposed at each of the first to fourth vibration structures 200A to 200D. Thus, each of the first to fourth vibration structures 200A to 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 to fourth vibration structures 200A to 200D moves to a free end. Therefore, because the spacer member is disposed in each of the first to fourth vibration structures 200A to 200D, a device having enhanced sound characteristics and / or enhanced sound pressure level characteristics may be provided, thereby providing 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 A cross-sectional view taken along line IX-IX' shown in FIG. Figure 26 and Figure 27 Shown by different modifications Figure 25 and Figure 26 Therefore, in the following, the description of the elements other than the spacer member will be omitted or briefly given below. In addition, the description of the spacer member can be the same as that of the above reference Figure 19 Descriptions given are the same or similar and thus are omitted or will be briefly given below.

[0655] Reference Figure 26 and ...

Claims

1. A vibration generating device, comprising: a display panel configured to display an image; a vibration device provided at a rear surface of the display panel and configured to vibrate the display panel; a supporting member located at a rear surface of the display panel; as well as a spacer member located between the vibration device and the support member, wherein the spacer member is made of the same material as the vibration device, and Wherein, the resonance of the vibration device is adjusted by adjusting the level of the signal applied to the spacer member. 2 . The vibration generating device according to claim 1 , further comprising a connection member provided between the display panel and the vibration device.

3. The vibration generating device according to claim 1, wherein The size of the spacer member is equal to or smaller than the size of the vibration device. 4 . The vibration generating device of claim 1 , further comprising a plate between the display panel and the vibration device.

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

6. The vibration generating device according to claim 5, wherein The vibration device further includes a bonding member located between the plurality of vibration generators.

7. The vibration generating device according to claim 5, wherein Each of the plurality of vibration generators is configured to vibrate in the same direction.

8. The vibration generating device according to claim 5, wherein Each of the plurality of vibration generators has the same size, and the plurality of vibration generators completely overlap one another in a plan view.

9. The vibration generating device according to claim 5, wherein An end portion of each of the plurality of vibration generators is aligned in a direction perpendicular to a front surface of the display panel.

10. The vibration generating device according to claim 5, wherein Each of the plurality of vibration generators further includes a plurality of vibration structures arranged along a first direction and a second direction crossing the first direction.

11. The vibration generating device according to claim 5, wherein Each of the plurality of vibration generators includes a plurality of vibration structures; and The spacer member is disposed between the plurality of vibration structures.

12. The vibration generating device according to claim 5, wherein Each of the plurality of vibration generators includes a plurality of vibration structures; and The spacer member is provided at each of the plurality of vibration structures.

13. The vibration generating device according to claim 5, wherein Each of the plurality of vibration generators includes a plurality of vibration structures; and The spacer member is provided on each of the plurality of vibration structures and is provided between adjacent spacer members provided at each of the plurality of vibration structures.

14. The vibration generating device according to claim 5, wherein Each of the plurality of vibration generators includes a plurality of vibration structures; and The spacer member overlaps at least one of the plurality of vibrating structures.

15. The vibration generating device according to claim 5, wherein Each of the plurality of vibration generators includes a plurality of vibration structures; The spacer member is provided in plurality; and One of the spacer members overlaps with at least two or more of the plurality of vibration structures.

16. The vibration generating device according to claim 5, wherein Each of the plurality of vibration generators includes a plurality of vibration structures; and The spacer member is disposed adjacent to the plurality of vibrating structures.

17. The vibration generating device according to claim 5, wherein Each of the plurality of vibration generators includes a plurality of vibration structures; and The spacer member overlaps two adjacent vibrating structures.

18. The vibration generating device according to claim 1, wherein The vibration device includes at least two or more vibration structures; and The spacer member is disposed between the at least two or more vibration structures.

19. The vibration generating device according to claim 1, wherein The vibration device includes a plurality of vibration structures; and The spacer member is provided at each of the plurality of vibration structures and between adjacent spacer members provided at each of the plurality of vibration structures.

20. The vibration generating device according to claim 1, wherein The vibration device includes at least two or more vibration structures; and The spacer member is provided at each of the at least two or more vibration structures.

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

22. The vibration generating device according to any one of claims 1 to 9, wherein The vibration device comprises: Vibrating structures; a first protective member provided at a first surface of the vibration structure; and A second protective member is provided at a second surface of the vibration structure that is different from the first surface of the vibration structure.

23. The vibration generating device according to claim 22, wherein The vibration device also includes: a first adhesive layer provided between the vibration structure and the first protective member; and A second adhesive layer is provided between the vibration structure and the second protection member.

24. The vibration generating device according to claim 22, wherein The vibration structure comprises: Vibration part; a first electrode portion provided between the vibration portion and the first protection member; and A second electrode portion is provided between the vibration portion and the second protection member.

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

26. A vibration generating device, comprising: a display panel configured to display an image; a vibration device located at a rear surface of the display panel; a plate positioned between the display panel and the vibration device; a supporting member disposed at a rear surface of the display panel; as well as a spacer member located between the vibration device and the support member, wherein the spacer member is made of the same material as the vibration device, and Wherein, the resonance of the vibration device is adjusted by adjusting the level of the signal applied to the spacer member. 27 . The vibration generating device of claim 26 , further comprising a connection member provided between the display panel and the vibration device.

28. The vibration generating device according to claim 26, wherein The display panel includes a first area and a second area; and The vibration device includes a first vibration device provided at the first area and a second vibration device provided at the second area. 29 . The vibration generating apparatus of claim 28 , further comprising a spacer disposed between the rear surface of the display panel and the supporting member and between the first area and the second area.

30. The vibration generating device of claim 28, wherein The spacer member is provided at each of the first vibration device and the second vibration device.

31. The vibration generating device of claim 28, wherein The vibration device also includes: a third vibration device provided at the first region; and A fourth vibrating device is provided at the second region.

32. The vibration generating device according to claim 31, 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 vibrating element and the fourth vibrating element are arranged parallel to or staggered with each other in the second region.

33. The vibration generating device of claim 31, wherein The spacer member is provided at each of the third vibration device and the fourth vibration device.

34. A vibration generating device according to any one of claims 26 to 33, wherein The vibration device comprises: Vibrating structures; a first protective member provided at a first surface of the vibration structure; and A second protective member is provided at a second surface of the vibration structure that is different from the first surface of the vibration structure.

35. The vibration generating device of claim 34, wherein: The vibration device also includes: a first adhesive layer provided between the vibration structure and the first protective member; and A second adhesive layer is provided between the vibration structure and the second protection member.

36. The vibration generating device of claim 34, further comprising: a first vibration driving line configured to transmit a first vibration driving signal to the vibration structure; as well as A second vibration driving line is configured to transmit a second vibration driving signal to the vibration structure.

37. The vibration generating device of claim 34, wherein: The vibration structure comprises: Vibration part; a first electrode portion provided between the vibration portion and the first protection member; and A second electrode portion is provided between the vibration portion and the second protection member.

38. The vibration generating device of claim 37, wherein: The vibration portion includes a plurality of first portions and a second portion disposed between the plurality of first portions.

39. The vibration generating device of claim 37, further comprising: a first power line connected to one of the first electrode portion and the second electrode portion; as well as A second power line connected to the other of the first electrode portion and the second electrode portion and spaced apart from the first power line in a plane parallel to the front and rear surfaces of the display panel.

40. The vibration generating device of claim 28, wherein: Each of the first vibration device and the second vibration device includes: a plurality of vibration generators; and A bonding member is located between the plurality of vibration generators.

41. The vibration generating device according to claim 28, in, The vibration device also includes: a third vibration device provided at the first region; and a fourth vibrating device disposed at the second region, and Wherein, each of the third vibration device and the fourth vibration device includes: a plurality of vibration generators; and A bonding member is located between the plurality of vibration generators.

42. A vibration generating device according to claim 40 or 41, wherein Each of the plurality of vibration generators comprises: a vibration portion including a plurality of inorganic material portions having piezoelectric properties and an organic material portion located between the plurality of inorganic material portions; a first electrode portion provided at a first surface of the vibration portion; and A second electrode portion is provided at a second surface of the vibration portion that is different from the first surface.

43. A vibration generating device according to claim 40 or 41, wherein Each of the plurality of vibration generators comprises: a vibration portion including a plurality of inorganic material portions having piezoelectric properties and an organic material portion located between the plurality of inorganic material portions; a first electrode portion provided at a first surface of the vibration portion; and A second electrode portion is provided at a second surface of the vibration portion that is different from the first surface.

44. The vibration generating device of claim 43, 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.

45. The vibration generating device of claim 43, wherein: some of the plurality of vibration generators overlap in a direction perpendicular to the front surface of the display panel; an inorganic material portion of a vibration generator disposed closer to the front surface of the display panel overlaps an inorganic material portion of another vibration generator disposed less close to the front surface of the display panel; and / or An organic material portion of the vibration generator disposed closer to the front surface of the display panel overlaps an organic material portion of the other vibration generator disposed less close to the front surface of the display panel.

46. ​​The vibration generating device of claim 43, further comprising: a first power line and a second power line, wherein some of the plurality of vibration generators overlap in a direction perpendicular to the front surface of the display panel, wherein a first electrode portion disposed closer to the front surface of the display panel and a first electrode portion disposed less close to the front surface of the display panel are connected to the first power line, and The second electrode portion disposed closer to the front surface of the display panel and the second electrode portion disposed less close to the front surface of the display panel are connected to the second power line.

47. A vibration generating device according to claim 40 or 41, wherein The adhesive member includes a first adhesive layer and a second adhesive layer, and Wherein, each of the plurality of vibration generators comprises: a plurality of vibration structures, the plurality of vibration structures being arranged along a first direction and a second direction intersecting the first direction; a first protective member provided at a first surface of each of the plurality of vibration structures through the first adhesive layer; and A second protective member is provided at the second surface of each of the plurality of vibration structures through the second adhesive layer.

48. The vibration generating device of claim 47, wherein: The plurality of vibration structures are arranged at intervals of 0.1 mm or more and less than 5 mm.

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

50. The vibration generating device of claim 47, wherein: The spacer member is disposed between the plurality of vibration structures included in each of the plurality of vibration generators.

51. The vibration generating device of claim 47, wherein: The spacer member is provided at the plurality of vibration structures included in each of the plurality of vibration generators.

52. The vibration generating device of claim 47, wherein: The spacer member is provided at each of the plurality of vibration structures included in each of the plurality of vibration generators and between adjacent spacer members provided on each of the plurality of vibration structures.

53. The vibration generating device of claim 26, wherein: The vibration device further includes a plurality of vibration structures; and The spacer member is disposed adjacent to a plurality of vibrating structures.

54. The vibration generating device of claim 26, wherein: The vibration device further includes a plurality of vibration structures; and The spacer member overlaps two adjacent vibrating structures.

55. The vibration generating device of claim 26, wherein: The vibration device further includes a plurality of vibration structures; and The spacer member overlaps at least one of the plurality of vibrating structures.

56. The vibration generating device of claim 26, wherein: The vibration device also includes a plurality of vibration structures; The spacer member is provided in plurality; and One of the spacer members overlaps with at least two or more of the plurality of vibration structures.

57. The vibration generating device of claim 47, wherein: Each of the plurality of vibrating structures comprises: Vibration part; a first electrode portion provided between the vibration portion and the first protection member; and A second electrode portion is provided between the vibration portion and the second protection member.

58. The vibration generating device of claim 57, wherein: The vibration part includes: a plurality of inorganic material portions; and An organic material portion is located between the plurality of inorganic material portions.

59. The vibration generating device of claim 47, wherein: Each of the plurality of vibration generators comprises: Vibration part; a first electrode portion provided at a first surface of the vibration portion; and a second electrode portion provided at a second surface of the vibration portion different from the first surface, and The first electrode portion of each of the plurality of vibration generators is disposed closer to the display panel than the second electrode portion.

60. The vibration generating device according to claim 59, further comprising a vibration driving circuit, the vibration driving circuit comprising a plurality of amplifiers respectively connected to the plurality of vibration generators, in, The plurality of vibration generators include a first group and a second group, The plurality of amplifiers include a first amplifier group and a second amplifier group, wherein the amplifier of the first amplifier group includes a first output terminal connected to the first electrode portion of the vibration generator of the first group and a second output terminal connected to the second electrode portion of the vibration generator of the first group, and The amplifier of 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.

61. The vibration generating device according to claim 47, in, Each of the plurality of vibration generators comprises: Vibration part; a first electrode portion provided at a first surface of the vibration portion; and a second electrode portion provided at a second surface of the vibration portion different from the first surface, wherein the plurality of vibration generators include a first group and a second group, wherein, in the vibration generator of the first group, the first electrode portion is arranged closer to the display panel than the second electrode portion, and In the vibration generator of the second group, the second electrode portion is arranged closer to the display panel than the first electrode portion.

62. The vibration generating device according to claim 61, further comprising a vibration driving circuit, the vibration driving circuit comprising a plurality of amplifiers respectively connected to the plurality of vibration generators, in, Each of the plurality of amplifiers comprises: a first output terminal connected to a first electrode portion of a corresponding vibration generator among the plurality of vibration generators; and A second output terminal is connected to a second electrode portion of a corresponding vibration generator among the plurality of vibration generators.

63. A vibration device, comprising: a plurality of vibration generators stacked on each other and configured to vibrate in the same direction; a bonding member located between the plurality of vibration generators; as well as a spacer member, the spacer member being located at the plurality of vibration generators, wherein the spacer member is made of the same material as the vibration generator, and Wherein, the resonance of the vibration device is adjusted by adjusting the level of the signal applied to the spacer member.

64. The vibration device of claim 63, wherein Each of the plurality of vibration generators is configured to vibrate in the same direction and / or is configured to have the same size.

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

66. The vibration device of claim 63, further comprising: a plate disposed at an uppermost vibration generator among the plurality of vibration generators, Wherein, the spacer member is arranged at the lowest vibration generator among the plurality of vibration generators.

67. The vibration device of claim 66, wherein The plate and each of the plurality of vibration generators have the same size.

68. The vibration device of claim 63, further comprising: Another spacer member is provided between adjacent spacer members located at the plurality of vibration generators.

69. A vibration generating device, comprising: vibrating components; a vibration device, the vibration device being located at the vibration member; as well as a spacer member, the spacer member being located at the vibration device, wherein the spacer member is made of the same material as the vibration device, and Wherein, the resonance of the vibration device is adjusted by adjusting the level of the signal applied to the spacer member.

70. The vibration generating device of claim 69, wherein: The vibration member includes a plate; and The plate includes a metal material, or a single non-metal material or a composite non-metal material including one or more of wood, plastic, glass, cloth, paper, and leather.

71. The vibration generating device of claim 70, wherein: Each of the vibration member and the plate has the same size.

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

73. The vibration generating device of claim 72, wherein: Each of the plurality of vibration generators further comprises a plurality of vibration structures; and The spacer member is provided at each of the plurality of vibration structures.

74. The vibration generating device of claim 72, wherein: Each of the plurality of vibration generators further comprises a plurality of vibration structures; and The spacer member is disposed between the plurality of vibration structures.

75. The vibration generating device of claim 72, wherein: Each of the plurality of vibration generators further comprises a plurality of vibration structures; and The spacer member is provided at each of the plurality of vibration structures and between adjacent spacer members provided at each of the plurality of vibration structures.

76. The vibration generating device of claim 72, wherein: Each of the plurality of vibration generators further comprises a plurality of vibration structures; and The spacer member is located at each of a plurality of vibration structures included in a lowermost vibration generator among the plurality of vibration generators.

77. The vibration generating device of claim 72, wherein: Each of the plurality of vibration generators further comprises a plurality of vibration structures; and The spacer member is located between a plurality of vibration structures included in a lowermost vibration generator among the plurality of vibration generators.

78. The vibration generating device of claim 72, wherein: Each of the plurality of vibration generators further comprises a plurality of vibration structures; and The spacer member is located at each of a plurality of vibration structures included in a lowermost vibration generator among the plurality of vibration generators and is provided at each of the plurality of vibration structures.

79. The vibration generating device of claim 72, wherein: Each of the plurality of vibration generators further comprises a plurality of vibration structures; and The spacer member is disposed adjacent to the plurality of vibrating structures.

80. The vibration generating device of claim 69, wherein: The vibration device includes at least two or more vibration structures; and The spacer member overlaps the at least two or more vibration structures.

81. The vibration generating device of claim 69, wherein: The vibration device includes at least two or more vibration structures; and The spacer member is provided at each of the at least two or more vibration structures and between adjacent spacer members provided at each of the at least two or more vibration structures.

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

83. The vibration generating device of claim 69, wherein: The vibration device includes at least two or more vibration structures; and The spacer member overlaps the at least two or more vibration structures.

84. The vibration generating device of claim 69, wherein: The vibration device includes at least two or more vibration structures; The spacer member is provided in plurality; and One of the spacer members overlaps with the at least two or more of the vibration structures.

85. The vibration generating device of claim 69, wherein: The vibration member includes a display panel including a plurality of pixels configured to display an image, or the vibration member includes one or more non-display panels among a light emitting diode lighting panel, an organic light emitting lighting panel, and an inorganic light emitting lighting panel.

86. The vibration generating device of claim 69, wherein: The vibration member includes one or more of a screen panel, a lighting panel, a sign panel, a vehicle interior material, a vehicle glass window, a vehicle exterior material, a building roof material, a building interior material, a building glass window, an aircraft interior material, an aircraft glass window, and a reflector, on which an image is projected from a display device.

87. A vibration generating device according to any one of claims 72 to 79, wherein Each of the plurality of vibration generators comprises: a vibration portion including a plurality of inorganic material portions having piezoelectric properties and an organic material portion located between the plurality of inorganic material portions; a first electrode portion provided at a first surface of the vibration portion; and A second electrode portion is provided at a second surface of the vibration portion that is different from the first surface.

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

89. The vibration generating device of claim 88, wherein: A first power line connected to a first electrode portion of the vibration generator disposed near the front surface of the vibration member does not overlap with a second power line connected to a second electrode portion of the vibration generator disposed near the front surface of the vibration member.

90. The vibration generating device of claim 88, wherein: A first power line connected to a first electrode portion of the vibration generator disposed less close to the front surface of the vibration member does not overlap a second power line connected to a second electrode portion of the vibration generator disposed less close to the front surface of the vibration member.

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

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

93. A vibration generating device according to any one of claims 69 to 86, wherein The vibration device comprises: 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 vibrating structures and a second electrode portion located on a surface different from the first surface; a third electrode portion located on a 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.

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