Device for outputting sound and vibration generating device

Abstract

A device for outputting sound and a vibration generating device. The device for outputting sound includes a vibration member, a first cover provided at a rear surface of the vibration member, a vibration device provided at a rear surface of the first cover, a first member provided at the rear surface of the first cover and provided at the rear surface of the vibration member, and a rear vibration member provided at the first member.

Description

[0001] This application is a divisional application of the original application with the application number 202111641951.3 (application date: December 29, 2021, and the invention name: Electronic device and vibration generation device) for an invention patent application. TECHNICAL FIELD

[0002] The present disclosure relates to an electronic device and a vibration generation device. BACKGROUND

[0003] A device (or electronic device), such as a display device, can include a display panel for displaying an image and a speaker for providing sound. When a separate speaker is located in the display device, the speaker occupies space. Accordingly, the design and spatial arrangement of the display device can be limited.

[0004] In addition, because sound output from the speaker can be propagated in a backward or downward direction of the display device, sound quality can be degraded due to interference between sound waves reflected from a wall and a floor. Accordingly, it can be difficult to deliver accurate sound, and the immersion of a viewer can be reduced. SUMMARY

[0005] The inventors have recognized the above problems and have conducted various experiments to implement an electronic device for improving sound quality and sound pressure characteristics. Accordingly, through various experiments, the inventors have invented an electronic device and a vibration generation device having a new structure for improving sound quality and sound pressure characteristics. Accordingly, the present disclosure exemplary embodiments propose an electronic device and a vibration generation device that substantially eliminate one or more problems resulting from limitations and drawbacks of the prior art.

[0006] One aspect of the present disclosure is to provide an electronic device and a vibration generation device that can vibrate a vibration member to generate sound in a forward direction of the device and can enhance one or both of sound characteristics and / or sound pressure level characteristics.

[0007] Another aspect of the present disclosure is to provide an electronic device and a vibration generation device that can vibrate a display member (or a vibration member) to generate haptic feedback and can enhance vibration characteristics, intensity, and response time of the haptic feedback.

[0008] Additional features and aspects will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the invention provided herein. The features and aspects of the invention can be realized and attained by means of the instruments and combinations pointed out in the appended claims and their equivalents, and in various embodiments of the invention.

[0009] To achieve these and other aspects of the inventive concept, and in accordance with the purposes of the present disclosure, an electronic device according to an exemplary embodiment of the present disclosure includes a vibration member, a first cover disposed at a rear surface of the vibration member, a vibration device disposed at a rear surface of the first cover, a first member disposed at the rear surface of the first cover and a rear surface of the vibration member, and a rear vibration member disposed at the first member, as embodied and broadly described herein.

[0010] In another aspect, a vibration generating device includes a first member including a first hole and a second hole, a first vibration device disposed at the first hole, a second vibration device disposed at the second hole, a second member connected to a rear surface of the vibration member to cover the first member, the first vibration device, and the second vibration device, and a rear vibration member disposed at the second member.

[0011] The electronic device according to an exemplary embodiment of the present disclosure can output sound in a forward direction of a display panel or a vibration member, and can output sound having improved sound quality, sound performance, and / or sound pressure level characteristics, thereby increasing immersion of a viewer (or a user).

[0012] The electronic device according to an exemplary embodiment of the present disclosure can generate haptic feedback based on vibration of a display panel or a vibration member, and can enhance vibration characteristics, intensity, and response time of the haptic feedback.

[0013] The vibration generating device according to an exemplary embodiment of the present disclosure can output sound in a forward direction of a vibration member (or a vibration object), and can output sound having improved sound quality and sound performance, and / or sound pressure level characteristics.

[0014] The vibration generating device according to an exemplary embodiment of the present disclosure can generate haptic feedback based on vibration of a vibration member (or a vibration object).

[0015] Other systems, methods, features, and advantages will be or will become apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features, and advantages be included within this description, be within the scope of the present disclosure, and be protected by the accompanying claims. Nothing in this section should be taken as a limitation on the claims. Additional aspects and advantages are discussed below in conjunction with the embodiments of the present disclosure.

[0016] It is to be understood that the above 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.

[0017] Paragraph 1. An electronic device, the electronic device comprising:

[0018] a vibration member;

[0019] a first cover disposed at a rear surface of the vibration member;

[0020] a vibration device disposed at a rear surface of the first cover;

[0021] a first member disposed at a rear surface of the first cover and disposed at a rear surface of the vibration member; and

[0022] a rear vibration member disposed at the first member.

[0023] Paragraph 2. The electronic device of paragraph 1, wherein the vibration device includes:

[0024] a plate disposed at a rear surface of the first cover and configured to cover a hole; and

[0025] a vibration generator disposed at a rear surface of the plate.

[0026] Paragraph 3. The electronic device of paragraph 2, wherein the plate has a second thickness that is thinner than a first thickness of a rear portion of the first cover.

[0027] Paragraph 4. The electronic device of paragraph 2, wherein the plate has a shape that is curved toward the vibration device or has a shape that is curved in a direction opposite to the vibration device.

[0028] Paragraph 5. The electronic device of paragraph 1, wherein the rear vibration member is disposed at a front surface of the first member opposite to the first cover or is disposed at a rear surface of the first member opposite to the front surface of the first member.

[0029] Paragraph 6. The electronic device of paragraph 1,

[0030] wherein the first member includes an accommodation portion, and

[0031] wherein the rear vibration member is disposed into the accommodation portion.

[0032] Paragraph 7. The electronic device of paragraph 6, wherein the accommodation portion is a portion of the first member that protrudes toward the first cover or protrudes in a direction opposite to the first cover.

[0033] Note 8. The electronic device of note 6, wherein the accommodation portion is a groove formed at a portion of a front surface of the first member, or a groove formed at a portion of a rear surface of the first member.

[0034] Note 9. The electronic device of note 6, wherein the accommodation portion includes a hole or a slit that overlaps the rear vibration member.

[0035] Note 10. The electronic device of note 1,

[0036] wherein the first cover includes a first peripheral region and a second peripheral region with respect to a first center line in a width direction, and

[0037] wherein the first member is disposed at at least one or more of the first peripheral region and the second peripheral region of the first cover.

[0038] Note 11. The electronic device of note 10,

[0039] wherein the first cover includes a first region and a second region with respect to a second center line in a length direction, and

[0040] wherein the first member is disposed above the first region and the second region of the first cover.

[0041] Note 12. The electronic device of note 11,

[0042] wherein the first member includes a first portion corresponding to the first region of the first cover and a second portion corresponding to the second region of the first cover,

[0043] wherein the vibration device is disposed at the first portion or the second portion of the first member, and

[0044] wherein the rear vibration member is disposed at the first portion or the second portion of the first member.

[0045] Note 13. The electronic device of note 11,

[0046] wherein the first member includes a first (1-1) member disposed at a rear surface of the first peripheral region of the first cover and a second (1-2) member disposed at a rear surface of the second peripheral region of the first cover,

[0047] wherein each of the first (1-1) member and the second (1-2) member includes a first portion corresponding to the first region of the first cover and a second portion corresponding to the second region of the first cover, and

[0048] wherein the rear vibration member includes:

[0049] a first rear vibration member disposed at the first portion or the second portion of the first (1-1) member, and

[0050] a second rear vibration member disposed at the first portion or the second portion of the first (1-2) member.

[0051] Clause 14. The electronic device of clause 13, wherein the first (1-1) member has a structure symmetrical with the first (1-2) member with respect to a center line of the vibration member.

[0052] Clause 15. The electronic device of clause 13, wherein the first (1-1) member includes a bottom portion disposed at a rear surface of the first vibration device and covering the rear surface of the first vibration device, and a lateral portion disposed at a lateral surface of the first vibration device and covering the lateral surface of the first vibration device, the lateral portion of the first (1-1) member connected to one side of the bottom portion of the first (1-1) member and disposed along a periphery of the bottom portion of the first (1-1) member, and

[0053] wherein the first (1-2) member includes a bottom portion disposed at a rear surface of the second vibration device and covering the rear surface of the second vibration device, and a lateral portion disposed at a lateral surface of the second vibration device and covering the lateral surface of the second vibration device, the lateral portion of the first (1-2) member connected to one side of the bottom portion of the first (1-2) member and disposed along a periphery of the bottom portion of the first (1-2) member.

[0054] Clause 16. The electronic device of clause 13, wherein the first rear vibration member includes a first vibration plate and a first connection member interposed between the first (1-1) member and the first vibration plate, and

[0055] wherein the second rear vibration member includes a second vibration plate and a second connection member interposed between the first (1-2) member and the second vibration plate.

[0056] Clause 17. The electronic device of clause 13,

[0057] wherein the vibration device includes a first vibration device disposed at a rear surface of a first peripheral area of the first cover,

[0058] wherein the first vibration device is disposed at the first portion or the second portion of the first (1-1) member, and

[0059] The first rear vibration member is disposed at the first portion or the second portion of the first (1-1) member.

[0060] Embodiment 18: The electronic device of Embodiment 13,

[0061] The vibration device includes a second vibration device disposed at a rear surface of a second peripheral area of the first cover,

[0062] The second vibration device is disposed at the first portion or the second portion of the first (1-2) member, and

[0063] The second rear vibration member is disposed at the first portion of the first (1-2) member or the second portion of the first (1-2) member.

[0064] Embodiment 19: The electronic device of Embodiment 13,

[0065] Embodiment 20: The electronic device of Embodiment 19,

[0066] Embodiment 21: The electronic device of Embodiment 19,

[0067] The first cover includes a first (1-1) hole disposed at the first peripheral area and a first (1-2) hole disposed at the second peripheral area,

[0068] The first vibration device covers the first (1-1) hole, and

[0069] The second vibration device covers the first (1-2) hole.

[0070] Embodiment 22: The electronic device of Embodiment 21,

[0071] The first vibration device includes a first (1-1) vibration device disposed at a rear surface of a first peripheral area of the first cover and a first (1-2) vibration device disposed adjacent to the first (1-1) vibration device to cover the first (1-1) hole, and

[0072] The second vibration device includes a first (2-1) vibration device disposed at a rear surface of a second peripheral area of the first cover, and a first (2-2) vibration device disposed adjacent to the first (2-1) vibration device to cover the first (1-2) hole.

[0073] Clause 23. The electronic device of Clause 22,

[0074] Each of the first (1-1) vibration device and the first (2-1) vibration device includes a film-type vibration device, and

[0075] Each of the first (1-2) vibration device and the first (2-2) vibration device includes a coil-type vibration device.

[0076] Clause 24. The electronic device of Clause 22, wherein each of the first (1-1) vibration device and the first (2-1) vibration device includes:

[0077] a vibration portion including a piezoelectric material;

[0078] a first electrode layer disposed at a first surface of the vibration portion; and

[0079] a second electrode layer disposed at a second surface of the vibration portion different from the first surface of the vibration portion.

[0080] Clause 25. The electronic device of Clause 24, wherein each of the first (1-1) vibration device and the first (2-1) vibration device further includes:

[0081] a first protection member disposed over and covering the first electrode layer; and

[0082] a second protection member disposed under and covering the second electrode layer.

[0083] Clause 26. The electronic device of Clause 25, wherein each of the first (1-1) vibration device and the first (2-1) vibration device further includes:

[0084] a first power supply line disposed at a rear surface of the first protection member facing the vibration portion and electrically connected to the first electrode layer;

[0085] a second power supply line disposed at a front surface of the second protection member facing the vibration portion and electrically connected to the second electrode layer; and

[0086] a pad portion electrically connected to the first power supply line and the second power supply line.

[0087] Clause 27. The electronic device of Clause 22,

[0088] wherein the first (1-1) vibration device includes a first vibration generator and a first plate disposed at a rear surface of the first peripheral area of the first cover, and

[0089] wherein the first (1-1) vibration device includes a first vibration generator and a first plate disposed at a rear surface of the first peripheral area of the first cover, and

[0090] Clause 28. The electronic device of Clause 27,

[0091] wherein the first plate includes a first (2-1) hole overlapping the first (1-1) hole, and

[0092] wherein the second plate includes a first (2-2) hole overlapping the first (1-2) hole.

[0093] Clause 29. The electronic device of Clause 28,

[0094] wherein the first cover includes a first (3-1) hole disposed at the first area of the first cover and a first (3-2) hole disposed at the second area of the first cover, and

[0095] wherein the first vibration device is disposed at the first area of the first cover and covers the first (3-1) hole, and the second vibration device is disposed at the second area of the first cover and covers the first (3-2) hole.

[0096] Clause 30. The electronic device of Clause 27,

[0097] wherein the first plate has a shape curved toward the first (1-1) hole or has a shape curved in a direction opposite to the first (1-1) hole, and

[0098] wherein the second plate has a shape curved toward the first (1-2) hole or has a shape curved in a direction opposite to the first (1-2) hole.

[0099] Clause 31. The electronic device of Clause 27,

[0100] wherein the first plate is disposed at a rear surface of the first peripheral area of the first cover,

[0101] wherein the first vibration generator is disposed at a rear surface of the first plate or at a rear surface of the first peripheral area of the first cover, and

[0102] wherein the first plate is disposed at a rear surface of the first vibration generator.

[0103] Clause 32. The electronic device of Clause 27,

[0104] wherein the second plate is disposed at a rear surface of a second peripheral region of the first cover,

[0105] wherein the second vibration generator is disposed at a rear surface of the second plate or at a rear surface of the second peripheral region of the first cover, and

[0106] wherein the second plate is disposed at a rear surface of the second vibration generator.

[0107] Clause 33. The electronic device of Clause 27, wherein each of the first vibration generator and the second vibration generator includes:

[0108] a vibration portion including a plurality of first portions including an inorganic material and a plurality of second portions disposed between the plurality of first portions and including an organic material;

[0109] a first electrode layer disposed at a first surface of the vibration portion; and

[0110] a second electrode layer disposed at a second surface of the vibration portion different from the first surface of the vibration portion.

[0111] Clause 34. The electronic device of Clause 27, wherein each of the first vibration generator and the second vibration generator includes:

[0112] a vibration portion including a piezoelectric material;

[0113] a first electrode layer disposed at a first surface of the vibration portion; and

[0114] a second electrode layer disposed at a second surface of the vibration portion different from the first surface of the vibration portion.

[0115] Clause 35. The electronic device of Clause 22,

[0116] wherein the first vibration device includes a second member disposed at a rear surface of a first peripheral region of the first cover, and

[0117] wherein the second vibration device includes a third member disposed at a rear surface of a second peripheral region of the first cover.

[0118] Embodiment 36. The electronic device of Embodiment 35,

[0119] wherein the first (1-1) vibration device and the first (1-2) vibration device are disposed at a rear surface of the second member, and

[0120] wherein the first (2-1) vibration device and the first (2-2) vibration device are disposed at a rear surface of the third member.

[0121] Embodiment 37. The electronic device of Embodiment 36,

[0122] wherein the second member includes a fourth (4-1) hole corresponding to the first (1-1) vibration device and a fourth (4-2) hole corresponding to the first (1-2) vibration device, and

[0123] wherein the third member includes a fifth (5-1) hole corresponding to the first (2-1) vibration device and a fifth (5-2) hole corresponding to the first (2-2) vibration device.

[0124] Embodiment 38. The electronic device of Embodiment 37, wherein the third member further includes a portion disposed between the fifth (5-1) hole and the fifth (5-2) hole, the portion for acoustically separating a space in which the first (2-1) vibration device is disposed from a space in which the first (2-2) vibration device is disposed.

[0125] Embodiment 39. The electronic device of Embodiment 37,

[0126] wherein the fourth (4-2) hole corresponds to the first (1-1) hole, and

[0127] wherein the fifth (5-2) hole corresponds to the first (1-2) hole.

[0128] Embodiment 40. The electronic device of any one of Embodiments 1 to 39, wherein the vibration member includes one or more of a display panel including a plurality of pixels configured to display an image, a light emitting diode illumination panel, an organic light emitting illumination panel, and an inorganic light emitting illumination panel.

[0129] Embodiment 41. The electronic device of any one of Embodiments 1 to 39, wherein the vibration member includes one or more of a material of metal, wood, rubber, plastic, glass, fiber, cloth, paper, and leather.

[0130] Note 42. The electronic device of any of notes 1-39, wherein the vibration member comprises one or more of a display panel including a plurality of pixels configured to display an image, a screen panel that projects an image from a display device, an illumination panel, a signage panel, a vehicle interior material, a vehicle glazing, a vehicle exterior material, a building ceiling material, a building interior material, a building glazing, an aircraft interior material, an aircraft glazing, and a mirror.

[0131] Note 43. The electronic device of any of notes 1-39, further comprising a display member including a display panel configured to display an image,

[0132] wherein the display member includes a backlight component disposed at a rear surface of the display panel, and a guide member between the display panel and the backlight component.

[0133] Note 44. The electronic device of note 43, wherein the display panel is further configured to sense a touch applied to the display member, or output sound in accordance with a vibration of the vibration device, or generate haptic feedback in response to a touch.

[0134] Note 45. The electronic device of any of notes 1-39, further comprising:

[0135] a display member including a display panel configured to display an image;

[0136] a front member disposed at a front surface of the display member; and

[0137] a second cover disposed at a rear surface of the first cover to house the display member, the first cover, the vibration device, and the first member having the rear vibration member disposed thereon.

[0138] Note 46. The electronic device of note 45, wherein the second cover includes a cover housing to provide an enclosed space between a rear portion of the first cover and a rear structure of the second cover.

[0139] Note 47. The electronic device of note 1, wherein the vibration device is a film-type vibration device.

[0140] Note 48. The electronic device of note 1, further comprising an air gap disposed between the first cover and the vibration device.

[0141] Note 49. A vibration generating device, comprising:

[0142] a first member including a first hole and a second hole;

[0143] a first vibration device disposed at the first hole;

[0144] a second vibration device disposed at the second hole;

[0145] a second member connected to a rear surface of the vibration member and configured to cover the first member, the first vibration device, and the second vibration device; and

[0146] a rear vibration member disposed at the second member.

[0147] Note 50. The vibration generating apparatus of Note 49, wherein the rear vibration member vibrates based on vibration of at least one or more of the first vibration device and the second vibration device.

[0148] Note 51. The vibration generating apparatus of Note 49,

[0149] wherein the second member includes an accommodation portion, and

[0150] wherein the rear vibration member is disposed into the accommodation portion.

[0151] Note 52. The vibration generating apparatus of Note 51, wherein the accommodation portion includes a groove formed at a portion of a front surface of the second member or a groove formed at a portion of a rear surface of the second member.

[0152] Note 53. The vibration generating apparatus of Note 51, wherein the accommodation portion includes a hole overlapping with the rear vibration member.

[0153] Note 54. The vibration generating apparatus of any one of Notes 51 to 53, wherein the rear vibration member further includes a vibration plate disposed at the accommodation portion, and

[0154] wherein the vibration plate is configured to vibrate by vibration of the second member based on vibration of at least one or more of the first vibration device and the second vibration device.

[0155] Note 55. The vibration generating apparatus of any one of Notes 49 to 53,

[0156] wherein the first vibration device outputs a first sound pressure level to the vibration member through the first hole,

[0157] wherein the second vibration device outputs a second sound pressure level different from the first sound pressure level to the vibration member through the second hole, and

[0158] wherein the rear vibration member outputs a haptic vibration based on a vibration of at least one or more of the first vibration device and the second vibration device.

[0159] Clause 56. The vibration generating apparatus of any one of clauses 49-53,

[0160] wherein the first vibration device includes a vibration generator including a piezoelectric device, and

[0161] wherein the second vibration device includes a coil type vibration generator.

[0162] Clause 57. The vibration generating apparatus of any one of clauses 49-53,

[0163] wherein the first vibration device is disposed between the first member and the second member and covers the first hole, and

[0164] wherein the second vibration device is disposed between the first member and the second member and covers the second hole.

[0165] Clause 58. The vibration generating apparatus of clause 49, wherein the second member includes:

[0166] a bottom portion covering a rear surface of each of the first member, the first vibration device, and the second vibration device; and

[0167] a lateral portion connected to the vibration member and disposed at a periphery of the bottom portion to cover a lateral surface of each of the first member, the first vibration device, and the second vibration device.

[0168] Clause 59. The vibration generating apparatus of clause 58, wherein the second member further includes a through hole disposed at the bottom portion and overlapping the first vibration device.

[0169] Clause 60. The vibration generating apparatus of clause 56,

[0170] wherein the first vibration device further includes a plate covering the first hole, and

[0171] wherein the vibration generator is disposed between the plate and the second member.

[0172] Paragraph 61. The vibration generation device according to Paragraph 55, wherein the plate has a shape bent toward the first hole or has a shape bent in a direction opposite to the first hole.

[0173] Paragraph 62. The vibration generation device according to Paragraph 49, wherein the first vibration device is a membrane type vibration device. BRIEF DESCRIPTION OF DRAWINGS

[0174] The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

[0175] Figure 1 An apparatus according to exemplary embodiments of the present disclosure is shown.

[0176] Figure 2 is an exploded perspective view of the apparatus shown in Figure 1

[0177] is a cross-sectional view taken along line I-I' shown in Figure 3 Figure 1 is a cross-sectional view taken along line II-II' shown in

[0178] Figure 4 Figure 3 is a magnified view of the region "A" shown in

[0179] Figure 5 is a magnified view of the region "B" shown in Figure 3

[0180] is a magnified view of the region "C" shown in Figure 6 Figure 3

[0181] Figure 7 A vibration generator according to exemplary embodiments of the present disclosure is shown.

[0182] Figure 8 is a cross-sectional view taken along line II-II' shown in Figure 7

[0183] A vibration portion of a vibration generator according to exemplary embodiments of the present disclosure is shown. Figures 9A-9F

[0184] is another magnified view of the region "B" shown in Figure 10 Figure 3 is another magnified view of the region "B" shown in

[0185] Figure 11 Figure 3 is another magnified view of the region "B" shown in

[0186] ​​​​​​Figure 12 yes Figure 3 Another enlarged view of region "B" shown.

[0187] Figure 13 yes Figure 3 Another enlarged view of region "C" shown.

[0188] Figure 14 This is an exploded view of a device according to another exemplary embodiment of the present disclosure.

[0189] Figure 15 It is relative to Figure 14 The connection structure of the device shown is along Figure 1 An exemplary cross-sectional view taken by line I-I' as shown.

[0190] Figure 16 yes Figure 15 An enlarged view of region "D" shown.

[0191] Figure 17 It shows Figure 14 An exemplary vibration generator is shown.

[0192] Figure 18 It is relative to Figure 14 The connection structure of the device shown follows Figure 1 Another exemplary cross-sectional view taken by line I-I' shown.

[0193] Figure 19 yes Figure 18 An enlarged view of region "E" shown in the image.

[0194] Figure 20 It is a graph showing the sound pressure level characteristics of a device according to an exemplary embodiment of the present disclosure.

[0195] Figure 21 This is a graph illustrating another sound pressure level characteristic of the device according to an exemplary embodiment of this disclosure.

[0196] Figure 22 The rear surface of a device according to another exemplary embodiment of this disclosure is shown.

[0197] Figure 23 yes Figure 22 An exploded perspective view of the device shown.

[0198] Figure 24 Measurement points in a display component for measuring vibration acceleration in a device according to an exemplary embodiment of the present disclosure are shown.

[0199] Throughout the drawings and detailed description, unless otherwise described, like reference characters should be understood to refer to like elements, features, and structures. The relative dimensions and depiction of these elements can be exaggerated for clarity, illustration, and convenience. DETAILED DESCRIPTION

[0200] Reference will now be made in detail embodiments of the present disclosure, examples of which can be illustrated in the accompanying drawings.

[0201] In the following description, the progress of the processing steps or operations described herein is not limited to that set forth here, and can be changed as known in the art unless otherwise specified. The same reference numbers denote the same elements throughout the text unless otherwise specified. The names of the corresponding elements used in the following description are selected only for the convenience of writing the specification, and thus can be different from those used in the actual product.

[0202] The advantages and features of the present disclosure and methods of accomplishing the same will be described in detail by referring to the following exemplary embodiments. However, the present disclosure can be implemented in various forms, and should not be considered limited to the exemplary embodiments set forth herein. Rather, the exemplary embodiments are provided so that the present disclosure can be sufficiently thorough and complete to enable one of ordinary skill in the art to completely understand the scope of the present disclosure. Furthermore, the scope of protection of the present disclosure is defined by the claims and their equivalents.

[0203] The shapes, sizes, ratios, angles, and numbers, etc. shown in the drawings to describe various exemplary embodiments of the present disclosure are given by way of example only. Thus, the present disclosure is not limited to what is shown in the drawings.

[0204] In the following description, detailed descriptions of related known functions or configurations can be omitted when it can unnecessarily obscure the focus of the present disclosure.

[0205] In the case where the terms "include", "have", "comprise" or the like are used, one or more other elements can be added unless the context clearly indicates otherwise. An element described in the singular form can be intended to include a plurality of elements unless the context clearly indicates otherwise.

[0206] In explaining an element, the element is to be interpreted as including an error or tolerance range even if no explicit description of the error or tolerance range is provided.

[0207] In describing a position relationship, for example, in describing a position relationship between two components using "on", "above", "below", "upper", "lower", "next to", "near", or the like, one or more other components can be positioned between the two components unless a more restrictive term such as "immediately", "directly", or "adjacent" is used. For example, when an element and a layer are disposed "on" another element or layer, a third element or layer can be interposed therebetween.

[0208] In describing a time relationship, when a time sequence is described as, for example, "after", "subsequently", "next", or "before", unless a more restrictive term such as "only", "immediately", or "directly" is used, discontinuous cases can be included.

[0209] Although the terms "first", "second", "first (1-1)", "first (1-2)", "second (2-1)", "second (2-2)", "A", "B", "(a)", "(b)", and the like can be used herein to describe various elements, these elements should not be construed as being limited by these terms since these terms are not used to define a particular order or priority. These terms are used only to distinguish one element from another. For example, a first element can be referred to as a second element, and similarly, a second element can be referred to as a first element, without departing from the scope of the disclosure.

[0210] Unless otherwise specified, the expression that one element or layer is "connected", "coupled", or "attached" to another element or layer means that the element or layer can be directly connected or attached to the other element or layer, or indirectly connected or attached to the other element or layer with one or more intervening elements or layers "disposed" or "interposed" therebetween.

[0211] When an element or layer is referred to as "on" or "connected to" another element or layer, it should be understood that the element or layer can be directly on or connected to the other element or layer, or there can be an intervening element or layer. In addition, when an element is referred to as being disposed "on" or "under" another element, it should be understood that the element can be so disposed that it is in direct contact with each other, or can be so disposed that it is not in direct contact with each other.

[0212] 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, the meaning of "at least one of a first element, a second element, and a third element" includes a combination of all three listed elements, a combination of any two of the three elements, and each of the first element, the second element, and the third element alone.

[0213] In the disclosure, the device can include a display device 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. Further, the device can include a package (or a package device) such as a notebook, a laptop, or a portable computer, a television, a computer monitor, a kit electronic device including an automotive device for a vehicle or another type of device, or a mobile electronic device such as a smart phone or an electronic pad, which is a finished product (or an end product) including the LCM or the OLED module.

[0214] Accordingly, in the disclosure, examples of the device can include the display device itself such as the LCM or the OLED module, and the package device as the end product or the application product including the LCM or the OLED module.

[0215] In some embodiments, the LCM or the OLED module including the display panel and the driver can be referred to as a display device, and the electronic device as the end product including the LCM or the OLED module can be referred to as a package device. For example, the display device can include a display panel such as an LCD panel or an OLED panel and a source printed circuit board (PCB) as a controller for driving the display panel. The package device can further include a package PCB which is a package controller electrically connected to the source PCB to control the overall operation of the package device.

[0216] In some embodiments of the disclosure, the device including the vibration device can be applied to a vehicle as a user interface module, for example, a central control panel for an automobile. For example, the device can be disposed between occupants seated in two front seats so as to transmit the vibration of the device to the inside of the vehicle. Accordingly, the audio experience in the vehicle can be improved compared to the case where the speaker is disposed inside the vehicle.

[0217] Features of various embodiments of the disclosure can be partially or wholly coupled or combined with each other, and can interoperate and be technically driven in various ways as can be sufficiently understood by those skilled in the art. The exemplary embodiments of the disclosure can be executed independently of each other, or can be executed together in a dependent relationship.

[0218] The accompanying drawings are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate exemplary embodiments of the disclosure, and together with the description serve to explain the principles of the disclosure. However, the technical features of the disclosure are not limited to specific drawings, and features disclosed in the drawings can be combined with each other to form new embodiments.

[0219] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In addition, the ratio of each element shown in the drawings can be different from the actual ratio for convenience of description. Therefore, the illustrated elements are not limited to the specific ratio shown in the drawings.

[0220] Figure 1 A device according to an exemplary embodiment of the present disclosure is illustrated.

[0221] Referring to Figure 1 , a device according to an exemplary embodiment of the present disclosure can include a display member 200. For example, the display member 200 can display an image, such as an electronic image, a digital image, a still image, or a video image. The device can generate sound and / or haptic feedback (or haptic vibration) based on vibration of the display member 200. For example, the device can generate a first sound and / or a first haptic feedback in one region thereof, and can generate a second sound and / or a second haptic feedback in another region thereof.

[0222] According to an exemplary embodiment of the present disclosure, a device can output sounds S1 and S2 (or vibration sounds or display vibration sounds) based on vibration of a display member 200 configured to display an image. For example, in the device, the display member 200 can be vibrated by a vibration device to generate the sounds S1 and S2. Accordingly, the device according to an exemplary embodiment of the present disclosure can use the display member 200 as a vibration plate for generating sound and / or haptic feedback.

[0223] A device according to an exemplary embodiment of the present disclosure can output sounds S1 and S2 in a forward direction FD of a screen by using a display member 200 as a vibration plate for generating sound. Accordingly, sound can be accurately delivered, sound quality can be improved, and the immersion of a viewer or a user can be improved. For example, the display member 200 can be a vibration member, a passive vibration member, a vibration object, a display panel, or a vibration plate, but exemplary embodiments of the present disclosure are not limited thereto.

[0224] Figure 2 is an exploded perspective view of the device illustrated in Figure 1 Figure 3 is a cross-sectional view taken along line I-I' illustrated in Figure 1 Figure 4 is an enlarged view of the region "A" illustrated in Figure 3

[0225] Referring to Figures 1-4 , a device according to an exemplary embodiment of the present disclosure can include a front member 100, a display member 200, a guide member 300, a first cover 400, one or more vibration devices 500, a first member 600, and a second cover 700. The configuration of the device is not limited to the illustrated example. ​​​

[0226] The front member 100 can constitute a frontmost structure of the device. For example, the front member 100 can be disposed at a front surface of the display member 200 and can protect a screen of the display member 200. For example, the front member 100 can cover a front surface of the display member 200 to protect the display member 200 from external impact. Also, the front member 100 can vibrate together with vibration of the display member 200 to generate sound S and / or haptic feedback. For example, the front member 100 can generate different sounds S1 and S2 and / or haptic feedback in different regions.

[0227] For example, the front member 100 can include a transparent plastic material, a glass material, or a tempered glass material. According to an example embodiment of the disclosure, the front member 100 can include one of sapphire glass and strengthened glass or a stacked structure thereof. According to another example embodiment of the disclosure, the front member 100 can include a transparent plastic material, such as polyethylene terephthalate (PET) or the like. The front member 100 can include tempered glass having scratch resistance and transparency. For example, the front member 100 can be a front structure, a front window, a cover window, a glass window, a cover screen, a screen cover, a window glass, or the like, but example embodiments of the disclosure are not limited thereto.

[0228] For example, the front member 100 can cover a non-display area other than a display area of the display member 200. For example, the front member 100 can include a transparent area overlapping the display area of the display member 200 and a non-transparent area (or light-shielding area) overlapping the non-display area of the display member 200. For example, the non-transparent area can cover not only the non-display area of the display member 200 but also a non-display area in which no image is displayed in the device.

[0229] The front member 100 can have a shape corresponding to an external shape or an outer periphery of the display member 200 or the display panel 210. For example, the front member 100 can have a polygonal shape including a rectangular shape or a square shape, or can have a non-polygonal shape including at least one side having a curved shape, but example embodiments of the disclosure are not limited thereto.

[0230] The device according to an example embodiment of the disclosure can further include a first connection member 110.

[0231] The first connecting member 110 can be disposed at the side surface of the front member 100. For example, the first connecting member 110 can be disposed to surround the side surface of the front member 100. The first connecting member 110 can be disposed to cover at least one or a plurality of the side surface and the corner portion of the front member 100. The first connecting member 110 can be disposed between the front member 100 and the second cover 700. The first connecting member 110 can be disposed along an area between the upper inner surface of the front member 100 and the second cover 700. The first connecting member 110 can connect or couple the front member 100 to the second cover 700, and can fill a space between the front member 100 and the second cover 700, thereby preventing light from leaking to the area between the front member 100 and the second cover 700 (lateral light leakage).

[0232] According to an exemplary embodiment of the disclosure, the first connecting member 110 can include a silicone-based or UV-cured based sealant (or resin). The first connecting member 110 can include a UV-cured based sealant in consideration of process interval time (or interval time). The first connecting member 110 can have a color (for example, blue, red, cyan, or black), but exemplary embodiments of the disclosure are not limited thereto. For example, the first connecting member 110 can include a colored resin or a light-shielding resin for preventing lateral light leakage.

[0233] The display member 200 can be disposed at the rear surface (or back surface) of the front member 100, and can be configured to display an image. For example, the image can include an electronic image, a digital image, or the like. For example, the display member 200 can be a liquid crystal display device, but the type of the display member 200 is not limited thereto. For example, the display member 200 can be another type of display device such as a light-emitting display device, an electrophoretic display device, a micro light-emitting diode display device, an electro wetting display device, a quantum dot light-emitting display device.

[0234] According to an exemplary embodiment of the disclosure, the rear surface (or back surface) of the display member 200 can include a central portion CP and a peripheral portion EP. For example, the rear surface of the display member 200 can be divided into the central portion CP and two peripheral portions EP parallel to each other, the central portion CP being located therebetween.

[0235] The central portion CP of the display member 200 can be divided into a first central portion CP1 and a second central portion CP2. For example, the first central portion CP1 can be a left portion (or left central portion) of the central portion CP, and the second central portion CP2 can be a right portion (or right central portion) of the central portion CP. With respect to the first direction X (or width direction) of the display member 200, the first central portion CP1 and the second central portion CP2 can be left-right symmetrical (or horizontally symmetrical) with respect to a center line (or width direction center line) CL1 of the display member 200.

[0236] The first central portion CP1 and the first peripheral portion EP1 can constitute a first portion (or a left portion) P1 of the display member 200. The second central portion CP2 and the second peripheral portion EP2 can constitute a second portion (or a right portion) P2 of the display member 200.

[0237] The display member 200 according to an exemplary embodiment of the present disclosure can include a display panel 210 and a backlight part 230. The configuration of the display member 200 is not limited thereto.

[0238] The display panel 210 can be disposed at a rear surface of the front member 100 and can be configured to display an image. For example, the image can include an electronic image, a digital image, a still image, a video image, etc.

[0239] The display panel 210 according to an exemplary embodiment of the present disclosure can be configured to display an image using light irradiated from the backlight part 230. Furthermore, the display panel 210 can function as a touch sensor that senses a touch (e.g., by a user) applied to the front member 100. The display panel 210 can output a sound S according to a vibration of the vibration device 500, or can generate haptic feedback (or haptic vibration) in response to a touch. The display panel 210 can be disposed at a rear surface of the front member 100 by using a bonding process of a panel bonding member (or an adhesive member). The panel bonding member can include a pressure sensitive adhesive (PSA), an optical clear adhesive (OCA), or an optical clear resin (OCR), but exemplary embodiments of the present disclosure are not limited thereto.

[0240] The display panel 210 according to an exemplary embodiment of the present disclosure can have a polygonal shape including a rectangular shape or a square shape, or can have a non-polygonal shape including at least one side having a curved shape, but exemplary embodiments of the present disclosure are not limited thereto. The display panel 210 can have the same or different shape as the front member 100. For example, the front member 100 can have a rectangular shape, and the display panel 210 can have a rectangular shape having a size smaller than the front member 100. For another example, the front member 100 can have a non-polygonal shape, and the display panel 210 can have a non-polygonal shape or a rectangular shape having a size smaller than the front member 100.

[0241] The display panel 210 can function as a vibrating plate that vibrates based on the vibration (or driving) of the vibration device 500 to output the sounds S1 and S2 to the forward direction FD. For example, the display panel 210 can output the first sound S1 of the first tonal sound band and the second sound S2 of the second tonal sound band to the forward direction FD of the display panel 210 simultaneously or sequentially based on the vibration device 500. According to an exemplary embodiment of the disclosure, the first tonal sound band can be the same as or different from the second tonal sound band. For example, the first sound S1 having the first tonal sound band can be output to the forward direction FD from the first portion (or left portion) P1 of the display panel 210, and the second sound S2 having the second tonal sound band can be output to the forward direction FD from the second portion (or right portion) P2 of the display panel 210.

[0242] The display panel 210 can be a vibrating plate that vibrates based on the vibration of the vibration device 500 to generate haptic feedback. For example, the display panel 210 can generate first haptic feedback at the first portion (or left portion) P1 based on the vibration of the vibration device 500, and can generate second haptic feedback at the second portion (or right portion) P2. For example, the display panel 210 can generate first haptic feedback at the first peripheral portion EP1, and can generate second haptic feedback at the second peripheral portion EP2.

[0243] Referring to Figure 4 The display panel 210 according to an exemplary embodiment of the disclosure can include a first substrate 211, a second substrate 213, a first polarization member 215, and a second polarization member 217. The configuration of the display panel 210 is not limited thereto.

[0244] The first substrate 211 can be a lower substrate or a thin film transistor (TFT) array substrate. The first substrate 211 can include a pixel array including a plurality of pixels respectively disposed in a plurality of pixel regions formed at intersections between a plurality of gate lines and a plurality of data lines. Each of the plurality of pixels can include a TFT connected with the gate line and the data line, a pixel electrode connected with the TFT, and a common electrode disposed adjacent to the pixel electrode and provided with a common voltage.

[0245] The first substrate 211 can further include a pad portion disposed at a first periphery thereof and a gate driving circuit disposed at a second periphery thereof. The pad portion can transfer signals provided from an external source to the pixel array and the gate driving circuit. For example, the pad portion can include a plurality of data pads connected with the plurality of data lines through a plurality of data link lines, and can further include a plurality of gate input pads connected with the gate driving circuit through a gate control signal line.

[0246] The gate driving circuit according to the exemplary embodiment of the disclosure can be embedded (or integrated) into the second periphery of the first substrate 211, and can be connected to the plurality of gate lines in a one-to-one relationship. For example, the gate driving circuit can be implemented with a shift register including transistors formed through the same process as the TFTs disposed in the pixel area. Alternatively, the gate driving circuit can be implemented in the form of an integrated circuit (IC), and can be disposed at the driving circuit part without being embedded into the first substrate 211.

[0247] The second substrate 213 can be a top substrate or a color filter array substrate. For example, the second substrate 213 can include a pixel pattern including an opening area overlapping each of the pixel areas formed at the first substrate 211, and can include a color filter layer formed at the opening area. The size of the second substrate 213 can be smaller than that of the first substrate 211, but the exemplary embodiment of the disclosure is not limited thereto. For example, the second substrate 213 can overlap the remaining portion of the first substrate 211 except for the first periphery. The second substrate 213 can be bonded to the remaining portion of the first substrate 211 except for the first periphery using a sealant, and the liquid crystal layer is located between the second substrate 213 and the first substrate 211.

[0248] The liquid crystal layer can be disposed between the first substrate 211 and the second substrate 213. For example, the liquid crystal layer can include liquid crystal containing liquid crystal molecules, in which the arrangement direction of the liquid crystal molecules changes based on an electric field generated by a common voltage and a data voltage applied to the pixel electrode of each pixel.

[0249] The first polarizing member 215 can be attached on the rear surface of the first substrate 211, and can polarize light incident from the backlight part 230 and propagating to the liquid crystal layer. The second polarizing member 217 can be attached on the top surface of the second substrate 213, and can polarize light passing through the second substrate 213 and incident on the second substrate 213 to release polarized light to the front surface of the device.

[0250] The display panel 210 can drive the liquid crystal layer based on an electric field generated in each pixel by a data voltage and a common voltage applied to each pixel. Accordingly, the display panel 210 can display an image based on light passing through the liquid crystal layer.

[0251] The display panel 210 according to the exemplary embodiment of the disclosure can further include a touch electrode layer for sensing a touch (e.g., by a user) applied to the front member 100.

[0252] The touch electrode layer can include a plurality of touch electrodes for sensing a touch. Each of the plurality of touch electrodes can function as a touch sensor for sensing a touch based on a mutual capacitance type or a self-capacitance type. For example, the touch electrode layer can be implemented as a touch panel including a plurality of touch electrodes. For example, the touch panel can be an add-on type touch panel or an in-cell type touch panel.

[0253] In the display panel 210 according to another exemplary embodiment of the disclosure, the first substrate 211 can be implemented as a color filter array substrate, and the second substrate 213 can be implemented as a TFT array substrate. For example, the display panel 210 according to another exemplary embodiment of the disclosure can have a type in which the upper and lower parts of the above-described exemplary embodiment display panel 210 are reversed. For example, the pad part of the display panel 210 according to another exemplary embodiment of the disclosure can be covered by a separate mechanism or structure.

[0254] The display panel 210 according to another exemplary embodiment of the disclosure can include a curved part that can be bent or curved to have a curved shape or a specific radius of curvature.

[0255] The curved part of the display panel 210 can be implemented as at least one of the first and second perimeters of the display panel 210 that are parallel to each other. The first and / or second perimeters of the display panel 210 (when the curved part is implemented) can include only a non-display area, or alternatively can include a perimeter of a display area as well as a non-display area. The display panel 210 including a curved part implemented by curving a non-display area can have a single-sided bezel bending structure or a double-sided bezel bending structure. Further, the display panel 210 including a curved part implemented by curving a perimeter of a display area and a non-display area can have a single-sided active bending structure or a double-sided active bending structure.

[0256] The backlight part 230 can be disposed at the rear surface of the display panel 210 and can irradiate light onto the rear surface of the display panel 210. For example, the backlight part 230 can be disposed between the display panel 210 and the first cover 400 and can be supported by the first cover 400.

[0257] The backlight part 230 according to an exemplary embodiment of the disclosure can include a light guide plate 231, a light source part 233, a reflective sheet 235, and an optical sheet part 237. The configuration of the backlight part 230 is not limited thereto.

[0258] The light guide plate 231 can include a light incident surface disposed at the first cover 400 to overlap with the display panel 210, and the light incident surface is disposed in at least one sidewall of the light guide plate 231. For example, the light guide plate 231 can include a light-transmissive plastic or glass material. The light guide plate 231 can deliver (or output) light incident on the light incident surface from the light source part 233 to the display panel 210. For example, the light guide plate 231 can be referred to as a light guide member or a planar light source, etc., but the exemplary embodiments of the present disclosure are not limited thereto.

[0259] The light source part 233 can irradiate light on the light incident surface disposed at the light guide plate 231. The light source part 233 can be disposed at one side surface of the light guide plate 231 to overlap with the first perimeter of the display panel 210. For example, the light source part 233 can be disposed between the guide member 300 and the first cover 400. For example, the light source part 233 can be disposed between the support part 310 of the guide member 300 and the first cover 400. For example, the light source part 233 can include a plurality of light emitting diode (LED) devices mounted at a light source printed circuit board and irradiating light on the light incident surface of the light guide plate 231. For example, the guide member 300 can be a panel guide or a guide panel, but the exemplary embodiments of the present disclosure are not limited thereto.

[0260] The reflective sheet 235 can be disposed at the rear surface of the light guide plate 231. For example, the reflective sheet 235 can be disposed between the first cover 400 and the rear surface of the light guide plate 231. The reflective sheet 235 can reflect light incident from the light guide plate 231 back to the light guide plate 231 to minimize or reduce loss of light.

[0261] The optical sheet part 237 can be disposed at the front surface of the light guide plate 231. For example, the optical sheet part 237 can enhance the brightness characteristic of light output from the light guide plate 231. For example, the optical sheet part 237 can include a lower diffusion sheet, a lower prism sheet, and an upper first prism sheet, but the exemplary embodiments of the present disclosure are not limited thereto. For example, the optical sheet part 237 can be composed of a stack combination of one or more sheets of a diffusion sheet, a prism sheet, a dual brightness enhancement film (DBEF), and a lenticular lens sheet, or can be composed of one composite sheet having a light diffusion function and a light condensing function.

[0262] The display member 200 according to the exemplary embodiments of the present disclosure can further include a driving circuit part.

[0263] The driving circuit part can be connected to a pad portion disposed at the first peripheral portion of the display panel 210, and can be configured to display an image corresponding to video data provided from a display host system on each pixel of the display panel 210. For example, the driving circuit part can be connected to a pad portion disposed at the first peripheral portion of the first substrate 211 of the display panel 210. For example, the driving circuit part can sense a touch (e.g., by a user) through a plurality of touch electrodes disposed at a touch electrode layer of the display panel 210.

[0264] According to an exemplary embodiment of the disclosure, the driving circuit part can be disposed at the first cover 400. For example, the driving circuit part can extend from the first peripheral portion of the display panel 210 along the side surface and the rear surface of the first cover 400. For example, the driving circuit part can be fixed to or connected to the rear surface of the first cover 400. For example, the driving circuit part can include at least one flexible circuit film, at least one data driving integrated circuit (IC), a printed circuit board (PCB), a control circuit, and a connector, but the configuration of the driving circuit part is not limited thereto. The connector can be a user connector, but an exemplary embodiment of the disclosure is not limited thereto.

[0265] Each of the at least one flexible circuit film can be attached at a pad portion disposed at the first peripheral portion of the first substrate 211 of the display panel 210 using a film attachment process. Each of the at least one flexible circuit film can be bent to surround a side surface (or a first side surface) of one or both of the display panel 210 and the backlight part 230, and can be connected to the PCB at one peripheral portion (or a first rear peripheral portion) of the rear surface of the first cover 400.

[0266] The at least one data driving IC can be individually mounted at each of the at least one flexible circuit film. The data driving IC can receive pixel data and a data control signal provided from the control circuit, convert the pixel data into a pixel-based analog data signal based on the data control signal, and provide an analog data voltage to a corresponding data line. Alternatively, each of the at least one data driving IC can be directly mounted at the first peripheral portion of the first substrate 211 through a chip bonding process, and can be connected to a plurality of data lines. In this exemplary configuration, the at least one flexible circuit film can be omitted.

[0267] The PCB can be commonly connected to the at least one flexible circuit film. For example, the PCB can be connected to the display panel 210 through the at least one flexible circuit film. For example, the PCB can be electrically connected to the other side of the at least one flexible circuit film through a film attachment process using an anisotropic conductive film, and can be disposed at the first rear peripheral portion of the first cover 400 based on the bending of the at least one flexible circuit film.

[0268] The control circuit can be provided (or mounted) at the PCB. For example, the control circuit can receive a timing synchronization signal and video data provided from a display host system through a connector. For example, the timing synchronization signal can include a vertical synchronization signal, a horizontal synchronization signal, a data enable signal, a main clock signal, and the like, but the example embodiments of the present disclosure are not limited thereto.

[0269] The control circuit can generate a gate control signal for controlling a driving timing of the gate driving circuit and a data control signal for controlling a driving timing of the at least one data driving IC based on the timing synchronization signal. For example, the gate control signal can include at least one gate start signal and a plurality of gate shift clocks, and the like. The data control signal can include a source start signal, a source shift clock, and a source output enable signal, and the like.

[0270] The connector can receive various signals including a sound signal from the display host system, and can provide the received signals to the control circuit.

[0271] According to the example embodiments of the present disclosure, the driving circuit part can further include a touch driving circuit connected to a touch electrode layer of the display panel 210.

[0272] The touch driving circuit can sense a touch (e.g., by a user) through each of a plurality of touch electrodes provided at the touch electrode layer to generate touch raw data, and can transmit coordinate information about the user touch to the display host system based on the generated touch raw data.

[0273] The display host system (or host system) can include a main board, various circuits mounted on the main board, various storage media, peripheral devices, a keyboard, and a power supply device, and the like. The various circuits mounted on the main board can include a central control circuit for processing various information, an image processing circuit for processing data according to the control of the central control circuit, and a sound processing circuit for processing sound according to the control of the central control circuit. The display host system can process various information, can generate a timing synchronization signal and video data and provide them to the control board, and can generate a driving signal including a sound signal or a haptic feedback signal and provide it to the control board. For example, the sound signal can be synchronized with the video data, or can not be synchronized with the video data.

[0274] The display host system can execute an application program associated with a touch coordinate corresponding to the coordinate information about the touch provided from the touch driving circuit, or can execute a user interface based on a touch input of a user. In addition, the display host system can generate a driving signal including a haptic feedback signal corresponding to the coordinate information about the touch provided from the touch driving circuit.

[0275] The guide member 300 according to an exemplary embodiment of the disclosure can be disposed between the display panel 210 and the backlight member 230. For example, the guide member 300 can be disposed between the rear peripheral portion EP of the display panel 210 and the front peripheral portion of the backlight member 230. For example, the guide member 300 can support the rear peripheral portion EP of the display panel 210. For example, the guide member 300 can cover one or both of the front peripheral portion and the side surface (or lateral surface) of the backlight member 230. For example, the guide member 300 can cover and support the side surface of the first cover 400.

[0276] According to an exemplary embodiment of the disclosure, the guide member 300 can maintain a gap between the display panel 210 and the backlight member 230, and can provide a sound transmission space STS between the display panel 210 and the backlight member 230.

[0277] According to an exemplary embodiment of the disclosure, the guide member 300 can have a quadrangular frame shape including an open portion overlapping the central portion CP of the display panel 210 except for the rear peripheral portion EP. The configuration of the guide member 300 is not limited thereto.

[0278] According to an exemplary embodiment of the disclosure, because the guide member 300 has a quadrangular frame shape including an open portion, the guide member 300 can provide a sound transmission space STS between the last surface of the display panel 210 and the foremost surface of the backlight member 230 facing each other, with the open portion therebetween, thereby preventing or minimizing leakage (or loss) of a sound pressure level transmitted to the sound transmission space STS. The sound transmission space STS can have a function of a sound pressure generation space in which a sound pressure is generated based on vibration of the backlight member 230. The sound transmission space STS can additionally or optionally have a function of a panel vibration space that enables vibration of the display panel 210 to be smoothly vibrated based on a sound pressure level.

[0279] Referring to Figure 3 and Figure 4 The second connection member 350 according to an exemplary embodiment of the disclosure can be disposed between the rear surface of the display panel 210 and the guide member 300. The third connection member 370 can be disposed between the front surface of the backlight member 230 and the guide member 300.

[0280] According to an exemplary embodiment of the disclosure, the guide member 300 can be disposed at or positioned at the rear peripheral portion EP of the display panel 210 by the second connection member 350. For example, the guide member 300 can be disposed at or positioned at the front peripheral portion of the backlight member 230 by the third connection member 370.

[0281] According to the exemplary embodiment of the present disclosure, a front surface of the second connecting member 350 can be disposed at or connected to the rear peripheral portion EP of the first substrate 211 of the display panel 210, and a rear surface of the second connecting member 350 can be disposed on or connected to the front surface of the guide member 300. Accordingly, the display panel 210 and the guide member 300 can be connected to the second connecting member 350. Accordingly, the display panel 210 can be fixed or connected to the guide member 300 using the second connecting member 350.

[0282] The second connecting member 350 can be disposed at the rear peripheral portion EP of the first substrate 211 to surround the lateral surface of the first polarizing member 215, thereby preventing lateral light leakage from occurring in the first polarizing member 215. The second connecting member 350 can provide a sound transmission space STS between the display panel 210 and the guide member 300. For example, the sound transmission space STS can be formed in a quad-seal type or a closed loop type through one or both of the guide member 300 and the second connecting member 350, but the exemplary embodiment of the present disclosure is not limited thereto.

[0283] According to the exemplary embodiment of the present disclosure, a front surface of the third connecting member 370 can be disposed at or connected to the rear surface of the guide member 300. A rear surface of the third connecting member 370 can be disposed at the front surface of the backlight part 230, and thus the guide member 300 and the backlight part 230 can be connected to the third connecting member 370. Accordingly, the backlight part 230 can be fixed or connected to the guide member 300 through the third connecting member 370.

[0284] According to an exemplary embodiment of the present disclosure, the guide member 300 can further include a groove 390 into which the third connecting member 370 can be inserted (or accommodated), and the third connecting member 370 can be inserted (or accommodated) into the groove 390. For example, the groove 390 can be formed at a rear surface of the guide member 300 overlapping with a front surface of the backlight part 230. For example, the third connecting member 370 can have a thickness (or height) enabling the backlight part 230 to be connected to the guide member (panel guide) 300, regardless of whether the third connecting member 370 is inserted (or accommodated) into the groove 390. For example, within an error range, the third connecting member 370 can be configured to have a thickness (or height) equal to or greater than that of the groove 390. According to an embodiment of the present disclosure, since the third connecting member 370 can be inserted or accommodated in the groove 390, an increase in the thickness of the device caused by the third connecting member 370 can be reduced or minimized. Further, in the case where the height of the sound transmission space STS is adjusted, the thickness or height of the third connecting member 370 can be excluded, and thus the height of the sound transmission space STS can be adjusted to the combined thickness or height of the guide member 300 and the second connecting member 350. Accordingly, the height of the sound transmission space STS can be controlled, thereby providing a device for outputting desired sound.

[0285] According to an exemplary embodiment of the present disclosure, the second connecting member 350 and the third connecting member 370 can include an acrylic-based or polyurethane-based adhesive member, but an exemplary embodiment of the present disclosure is not limited thereto. For example, the second connecting member 350 and the third connecting member 370 can include an acrylic-based adhesive member having relatively strong adhesive force and relatively high hardness, such that vibrations of the guide member 300 can be sufficiently transmitted to the display panel 210. In this case, the second connecting member 350 and the third connecting member 370 can include an acrylic-based adhesive layer, a double-sided foam adhesive pad, or an acrylic-based adhesive resin cured layer. However, an embodiment of the present disclosure is not limited to such examples.

[0286] According to an exemplary embodiment of the present disclosure, the guide member 300 can include a plastic material, a metal material, or a combination of a plastic material and a metal material, but the material of the guide member 300 is not limited thereto. For example, the guide member 300 can function as a vibration transmission member that transmits vibrations generated by the vibration device 500 to the rear peripheral portion EP of the display panel 210. Accordingly, the vibrations generated by the vibration device 500 can be transmitted from the guide member 300 to the display panel 210 without being lost, in a state where the rigidity of the display panel 210 is maintained. For example, the guide member 300 can include a metal material for transmitting the vibrations generated by the vibration device 500 to the display panel 210 in a state where the rigidity of the display panel 210 is maintained, but an exemplary embodiment of the present disclosure is not limited thereto.

[0287] The guide member 300 according to an exemplary embodiment of the disclosure can include a support portion 310 and a lateral portion 330. For example, the guide member 300 can have a cross-sectional structure having a gamma shape (┓) or a rotated L shape (┏) based on a coupling structure of the support portion 310 and the lateral portion 330.

[0288] The support portion 310 according to an exemplary embodiment of the disclosure can be disposed between the display panel 210 and the backlight member 230. For example, the support portion 310 can be disposed between the rear peripheral portion EP of the display panel 210 and the front peripheral portion of the backlight member 230, and can support the rear peripheral portion EP of the display panel 210.

[0289] According to an exemplary embodiment of the disclosure, the support portion 310 can maintain a gap between the display panel 210 and the backlight member 230. For example, the support portion 310 can provide a sound transmission space STS between the display panel 210 and the backlight member 230. For example, the support portion 310 can have a quadrangular frame shape including an opening portion overlapping the central portion CP of the display panel 210 except for the rear peripheral portion EP, and the configuration of the support portion 310 is not limited to this specific example.

[0290] According to an exemplary embodiment of the disclosure, the second connection member 350 can be disposed at a front surface of the support portion 310, and the third connection member 370 can be disposed at a rear surface of the support portion 310. For example, the groove 390 can be disposed at the rear surface of the support portion 310.

[0291] The lateral portion (or guide side wall) 330 according to an exemplary embodiment of the disclosure can be connected to the support portion 310, and can cover a side surface (or lateral surface) of the backlight member 230. For example, the lateral portion 330 can cover a side surface (or lateral surface) of the first cover 400. For example, the lateral portion 330 can be bent from the support portion 310 to the side surface of the first cover 400, and can cover and support the side surface of the first cover 400.

[0292] The first cover 400 can be configured to support the display member 200, and can be configured to cover a rear surface of the display member 200. In addition, the first cover 400 can be configured to support the vibration device 500. The first cover 400 can function as a vibration plate. The first cover 400 can include a metal material or a metal alloy material. For example, the first cover 400 can include any one or more of an aluminum (Al) material, a magnesium (Mg) material, a magnesium (Mg) alloy material, a magnesium-lithium (Mg-Li) alloy material, and an aluminum (Al) alloy material, but exemplary embodiments of the disclosure are not limited to this specific example.

[0293] The first cover 400 can be configured to include a rear portion 410 and a lateral portion 430. The rear portion 410 can be configured to support a rear surface of the display member 200. The lateral portion 430 can be connected to a peripheral portion of the rear portion 410, and can cover a lateral surface of the display member 200, but the configuration of the first cover 400 is not limited thereto.

[0294] The rear portion 410 can be disposed to cover a rear surface of the display member 200, and can be configured to support the display member 200. For example, the rear portion 410 can be formed in a plate structure. For example, the rear portion 410 can be configured to support the backlight part 230 of the display member 200, and can support the vibration device 500. For example, the rear portion 410 can directly contact a rear surface of the backlight part 230. For example, the rear portion 410 can directly contact a rear surface of the reflective sheet 235 of the backlight part 230. For example, the rear portion 410 can directly contact a rear surface of the backlight part 230, and thus can transmit a vibration generated based on the vibration of the vibration device 500 to the backlight part 230.

[0295] The rear portion 410 (or the first cover 400) can include a middle area (or a first cover area) MA and a peripheral area (or a second cover area) EA. For example, the middle area (or the first cover area) MA of the rear portion 410 (or the first cover 400) can correspond to (or overlap) the central portion CP of the display member 200. For example, the peripheral area (or the second cover area) EA of the rear portion 410 (or the first cover 400) can correspond to (or overlap) the peripheral portion EP of the display member 200.

[0296] The middle area MA of the rear portion 410 (or the first cover 400) can include a first middle area (or a left middle area) MA1 and a second middle area (or a right middle area) MA2. For example, the first middle area (or the left middle area) MA1 of the rear portion 410 (or the first cover 400) can correspond to (or overlap) the first central portion CP1 of the display member 200. For example, the second middle area (or the right middle area) MA2 of the rear portion 410 (or the first cover 400) can correspond to (or overlap) the second central portion CP2 of the display member 200.

[0297] The peripheral area EA of the rear portion 410 (or the first cover 400) can include a first peripheral area (or a left peripheral area) EA1 and a second peripheral area (or a right peripheral area) EA2. For example, the first peripheral area (or the left peripheral area) EA1 of the rear portion 410 (or the first cover 400) can correspond to (or overlap) the first peripheral portion EP1 of the display member 200. For example, the second peripheral area (or the right peripheral area) EA2 of the rear portion 410 (or the first cover 400) can correspond to (or overlap) the second peripheral portion EP2 of the display member 200.

[0298] According to an exemplary embodiment of the present disclosure, the first middle area MA1 and the first peripheral area EA1 can constitute a first area (or a left area) A1 of the rear portion 410 (or the first cover 400). For example, the second middle area MA2 and the second peripheral area EA2 can constitute a second area (or a right area) A2 of the rear portion 410 (or the first cover 400). For example, the first area A1 can correspond to (or overlap) the first portion P1 of the display member 200, and the second area A2 can correspond to (or overlap) the second portion P2 of the display member 200.

[0299] The lateral portion 430 can be disposed between the back light member 230 and the guide member 300. For example, the lateral portion 430 can be disposed between a lateral surface of the back light member 230 and the lateral portion 330 of the guide member 300.

[0300] According to an exemplary embodiment of the present disclosure, the lateral portion 430 can be connected to the back light member 230 by a fourth connecting member 430a. For example, the fourth connecting member 430a can be disposed between the lateral portion 430 and the back light member 230. For example, the lateral portion 430 can be connected to the guide member 300 by a fifth connecting member 430b. For example, the fifth connecting member 430b can be disposed between the lateral portion 430 of the first cover 400 and the lateral portion 330 of the guide member 300.

[0301] According to an exemplary embodiment of the present disclosure, the fourth connecting member 430a and the fifth connecting member 430b can include an acrylic-based or a polyurethane-based adhesive member, but exemplary embodiments of the present disclosure are not limited thereto. For example, the fourth connecting member 430a and the fifth connecting member 430b can include an acrylic-based adhesive material having relatively strong adhesive force and relatively high hardness, such that vibration of the guide member 300 can be sufficiently transmitted to the display panel 210.

[0302] Referring to Figures 2-4 , the first cover 400 according to an exemplary embodiment of the present disclosure can further include a first hole 411. For example, the first hole 411 can be disposed at the rear portion 410 of the first cover 400.

[0303] The first hole 411 can be provided at the first cover 400 overlapping the vibration device 500, and a rear surface of the backlight member 230 can be exposed through the first hole 411. For example, the first hole 411 can secure a vibration space of the first cover 400 through which a sound based on vibration of the vibration device 500 is propagated in a direction toward a front surface of the device. For example, the reflective sheet 235 of the backlight member 230 can be exposed in a direction toward a rear surface of the first cover 400 through the first hole 411. For example, the first hole 411 can be provided at each of the first area A1 and the second area A2 of the rear portion 410. For example, the first hole 411 can include a first (1-1) hole 411-1 provided at the first area A1 and a first (1-2) hole 411-2 provided at the second area A2. The first (1-1) hole 411-1 of the present disclosure embodiment can be a first hole, and the first (1-2) hole 411-2 of the present disclosure embodiment can be a second hole, but the present disclosure embodiment is not limited to the numbering.

[0304] According to the exemplary embodiment of the present disclosure, the first (1-1) hole 411-1 in or through the first cover 400 can be provided at or above the first middle area MA1 or the first peripheral area EA1. For example, the first (1-2) hole 411-2 in or through the first cover 400 can be provided at or above the second middle area MA2 or the second peripheral area EA2.

[0305] The first hole 411 can provide a first gap space between the display member 200 and the vibration device 500. For example, the first hole 411 can provide a first gap space between the backlight member 230 of the display member 200 and the vibration device 500. For example, the first hole 411 can provide a first gap space between the reflective sheet 235 of the backlight member 230 and the vibration device 500. For example, the first gap space can be a vibration space based on driving of the vibration device 500, a sound pressure level space (or a sound portion) in which a sound pressure level can be generated based on vibration of the vibration device 500, or a sound wave propagation path (or a sound energy incidence portion) through which a sound wave generated based on vibration of the vibration device 500 can be directly propagated to the display member 200, but the exemplary embodiment of the present disclosure is not limited thereto.

[0306] The size (or width) of the first hole 411 according to the exemplary embodiment of the present disclosure can be smaller than that of the vibration device 500. In the case where the total size (or total width) of the first hole 411 is greater than that of the corresponding vibration device 500, the vibration device 500 can be inserted (or accommodated) into the first hole 411, and thus, the vibration device 500 can be disposed at the rear portion 410 without using a separate mechanism. Accordingly, in the case where the total size (total width) of the first hole 411 is smaller than that of the corresponding vibration device 500, the vibration device 500 can be disposed at the rear portion 410 to overlap the first hole 411 even without a separate mechanism. For example, the first hole 411 according to the exemplary embodiment of the present disclosure can have the same shape as that of the vibration device 500, or can have a quadrangular shape or a circular shape, but the exemplary embodiment of the present disclosure is not limited thereto.

[0307] Referring to Figure 3 and Figure 4 The first cover 400 according to the exemplary embodiment of the present disclosure can further include a reinforcing portion 450. The reinforcing portion 450 can increase or supplement the rigidity of the first cover 400. For example, the reinforcing portion 450 can protrude a certain height rearward from the rear portion 410, thereby increasing or supplementing the rigidity of the first cover 400. For example, the reinforcing portion 450 can be a formed portion of the first cover 400.

[0308] According to the exemplary embodiment of the present disclosure, the reinforcing portion 450 can be formed along a peripheral area EA of the rear portion 410. For example, the reinforcing portion 450 can be formed at an area where the rear portion 410 is connected to the lateral portion 430. For example, the reinforcing portion 450 can protrude in a rearward direction from a rear surface of the rear portion 410 to include an inclined surface inclined from an end or a side of the rear portion 410. The lateral portion 430 can be connected to an end or a side of the reinforcing portion 450.

[0309] According to the exemplary embodiment of the present disclosure, the reinforcing portion 450 can include a first reinforcing portion (or inclined surface) 451 or a second reinforcing portion (or flat surface) 453. For example, the first reinforcing portion (or inclined surface) 451 can be disposed (or extended) to be inclined in a rearward direction from an end or a side of the rear portion 410. For example, the second reinforcing portion (or flat surface) 453 can be disposed (or extended) horizontally in a first direction X toward the lateral portion 430 from an end or a side of the first reinforcing portion 451. For example, an end or a side of the second reinforcing portion 453 can be connected to the lateral portion 430.

[0310] The vibration device 500 can be disposed at a rear surface of the first cover 400 and can vibrate the display member 200. For example, the vibration device 500 can be supported by the first cover 400. For example, the vibration device 500 can be disposed at the rear portion 410 to cover the first hole 411 disposed at the rear portion 410 of the first cover 400.

[0311] The vibration device 500 according to the example embodiments of the disclosure can be a membrane type vibration device. For example, the vibration device 500 can be referred to as a piezoelectric device, a flexible sound generator, a flexible actuator, a flexible speaker, a flexible piezoelectric speaker, a membrane actuator, a membrane type piezoelectric composite actuator, a membrane speaker, a membrane type piezoelectric speaker, or a membrane type piezoelectric composite speaker, etc., but the example embodiments of the disclosure are not limited thereto.

[0312] According to the example embodiments of the disclosure, the vibration device 500 can vibrate based on a driving signal including a haptic feedback signal or / and a sound signal to vibrate the display member 200. Accordingly, the vibration device 500 can generate a sound S based on the vibration of the display member 200, or can generate a haptic feedback (or haptic vibration) in response to a touch (e.g., by a user).

[0313] According to the example embodiments of the disclosure, the vibration device 500 can vibrate the first portion P1 of the display member 200 to generate a first sound S1 of a first tonal band based on the vibration of the first portion P1, or can generate a first haptic feedback (or haptic vibration) in response to a touch. For example, the vibration device 500 can vibrate the second portion P2 of the display member 200 to generate a second sound S2 of a second tonal band based on the vibration of the second portion P2, or can generate a second haptic feedback (or haptic vibration) in response to a touch.

[0314] The vibration device 500 according to the example embodiments of the disclosure can include a plurality of vibration devices, for example, a first vibration device 510 and a second vibration device 530, but the example embodiments of the disclosure are not limited thereto.

[0315] The first vibration device 510 can include at least one or more first (1-1) vibration devices 510-1. For example, the first vibration device 510 can include one first (1-1) vibration device 510-1. The first (1-1) vibration device 510-1 according to the example embodiments of the disclosure can be substantially the same as the first vibration device 510.

[0316] The second vibration device 530 can include at least one or more second (2-1) vibration devices 530-1. For example, the second vibration device 530 can include one second (2-1) vibration device 530-1. The second (2-1) vibration device 530-1 according to an exemplary embodiment of the present disclosure can be substantially the same as the second vibration device 530. Each of the first (1-1) vibration device 510-1, the first (1-2) vibration device 510-2, the second (2-1) vibration device 530-1, and the second (2-2) vibration device 530-2 of the present embodiment can be a first vibration device, a third vibration device, a second vibration device, and a fourth vibration device, but the present embodiment is not limited to the numbering.

[0317] According to an exemplary embodiment of the present disclosure, the first (1-1) vibration device 510-1 can include a plate 511 and a vibration generator 513, and the second (2-1) vibration device 530-1 can include a plate 531 and a vibration generator 533. The configuration of each of the first (1-1) vibration device 510-1 and the second (2-1) vibration device 530-1 is not limited thereto. The plate 511 of the present embodiment can be a first plate, and the plate 531 of the present embodiment can be a second plate, but the present embodiment is not limited to the numbering.

[0318] The first vibration device 510 can be disposed in the first area A1 of the first cover 400 (or the rear portion 410) and can cover the first (1-1) hole 411-1 disposed at the first area A1.

[0319] The first vibration device 510 can vibrate the first area A1 of the first cover 400 based on a first driving signal including a haptic feedback signal or / and a sound signal to vibrate the first portion P1 of the display member 200. Accordingly, the first vibration device 510 can generate the first sound S1 of the first tonal sound band based on the vibration of the first portion P1 of the display member 200, or can generate the first haptic feedback (or haptic vibration) in response to a touch (e.g., by a user).

[0320] The first vibration device 510 according to an exemplary embodiment of the present disclosure can vibrate the first area A1 of the first cover 400 in response to the first driving signal to generate a sound pressure level in an inner area (or a first gap space) of the first (1-1) hole 411-1 located in the first cover 400 or passing through the first cover 400. Accordingly, the first vibration device 510 can vibrate the first portion P1 of the display member 200 to generate the first sound S1 of the first tonal sound band or to generate the first haptic feedback.

[0321] According to the example embodiment of the disclosure, when the first vibration device 510 vibrates based on the first driving signal, a sound pressure level can be generated in an inner region of the (1-1)th hole 411-1 by vibration of the first area A1 of the first cover 400 based on the vibration of the first vibration device 510. A sound pressure level can be generated in the sound transmission space STS by vibration of the backlight member 230 based on the sound pressure level. Based on the vibration of the first portion P1 of the display panel 210 by the sound pressure level generated in the sound transmission space STS, a first sound S1 of a first tonal band can be output in the forward direction FD of the display panel 210, or a first haptic feedback can be generated. For example, a sound wave generated based on the vibration of the first vibration device 510 can be transmitted (or propagated) to the display member 200 through the (1-1)th hole 411-1. Accordingly, a sound pressure level characteristic and / or sound quality of the first sound S1 can be enhanced. According to the example embodiment of the disclosure, a sound wave generated based on the vibration of the first vibration device 510 can be directly transmitted (or propagated) to the display member 200 through the (1-1)th hole 411-1. Accordingly, a sound pressure level characteristic and / or sound quality of the first sound S1 can be enhanced.

[0322] The second vibration device 530 can vibrate the second area A2 of the first cover 400 based on a second driving signal including a haptic feedback signal or / and a sound signal to vibrate the second portion P2 of the display member 200. Accordingly, the second vibration device 530 can generate a second sound S2 of a second tonal band based on the vibration of the second portion P2 of the display member 200, or can generate a second haptic feedback (or haptic vibration) in response to a touch. For example, the second vibration device 530 can vibrate the second area A2 of the first cover 400 so that the second portion P2 of the display member 200 is directly vibrated, and thus can generate a second sound S2 of a second tonal band, or can generate a second haptic feedback (or haptic vibration) in response to a touch (e.g., by a user).

[0323] The second vibration device 530 according to the example embodiment of the disclosure can vibrate the second area A2 of the first cover 400 in response to the second driving signal to generate a sound pressure level in an inner region (or a first gap space) of a (1-2)th hole 411-2 located in the first cover 400 or passing through the first cover 400. Accordingly, the second vibration device 530 can vibrate the second portion P2 of the display member 200 to generate a second sound S2 of a second tonal band or to generate a second haptic feedback.

[0324] According to the example embodiment of the disclosure, when the second vibration device 530 vibrates based on the second driving signal, a sound pressure level can be generated in the inner region of the (1-2) hole 411-2 by the vibration of the second region A2 of the first cover 400 based on the vibration of the second vibration device 530. The sound pressure level can be generated in the sound transmission space STS by the vibration of the backlight part 230 based on the sound pressure level. Based on the vibration of the second portion P2 of the display panel 210 by the sound pressure level generated in the sound transmission space STS, the second sound S2 of the second tonal sound band can be output in the forward direction FD of the display panel 210, or the second haptic feedback can be generated. For example, the sound wave generated based on the vibration of the second vibration device 530 can be transmitted (or propagated) to the display member 200 through the (1-2) hole 411-2. Accordingly, the sound pressure level characteristic and / or the sound quality of the second sound S2 can be enhanced. According to the example embodiment of the disclosure, the sound wave generated based on the vibration of the second vibration device 530 can be directly transmitted (or propagated) to the display member 200 through the (1-2) hole 411-2. Accordingly, the sound pressure level characteristic and / or the sound quality of the second sound S2 can be enhanced.

[0325] The plates 511 and 531 according to the example embodiment of the disclosure can be disposed at the rear portion 410 of the first cover 400 through the sixth connection members 515 and 535, respectively. For example, the plates 511 and 531 can cover the first holes 411-1 and 411-2 located in or passing through the rear portion 410 of the first cover 400, respectively. For example, the sizes (widths) of the plates 511 and 531 can be greater than those of the first holes 411-1 and 411-2, respectively. The sixth connection member 515 of the embodiment of the disclosure can be a sixth connection member, and the sixth connection member 535 of the embodiment of the disclosure can be a seventh connection member, but the embodiment of the disclosure is not limited to the numbering.

[0326] According to the example embodiment of the disclosure, the plate (or first plate) 511 of the (1-1) vibration device 510-1 can be disposed at the rear portion 410 of the first cover 400. For example, the plate (or first plate) 511 of the (1-1) vibration device 510-1 can be disposed at the rear portion 410 of the first cover 400 through the (6-1) connection member 515. For example, the plate (or first plate) 511 of the (1-1) vibration device 510-1 can cover the (1-1) hole 411-1 of the rear portion 410. For example, the size of the plate (or first plate) 511 of the (1-1) vibration device 510-1 can be greater than or equal to the size of the vibration generator 513.

[0327] According to the example embodiment of the disclosure, the plate (or second plate) 531 of the (2-1)th vibration device 530-1 can be disposed at the rear portion 410 of the first cover 400. For example, the plate (or second plate) 531 of the (2-1)th vibration device 530-1 can be disposed at the rear portion 410 of the first cover 400 through the (6-2)th connecting member 535. For example, the plate (or second plate) 531 of the (2-1)th vibration device 530-1 can cover the (1-2)th hole 411-2 of the rear portion 410. For example, the plate (or second plate) 531 of the (2-1)th vibration device 530-1 can have a size greater than or equal to a size of the vibration generator 533.

[0328] The plate (or first plate) 511 can be a vibration plate that generates a sound pressure level in an inner region of the (1-1)th hole 411-1 of the rear portion 410 of the first cover 400. The plate (or second plate) 531 can be a vibration plate that generates a sound pressure level in an inner region of the (1-2)th hole 411-2 of the rear portion 410. The plates 511 and 531 according to the example embodiment of the disclosure can include any one or more metal materials such as stainless steel, aluminum (Al), magnesium (Mg), a magnesium alloy, a magnesium-lithium (Mg-Li) alloy, and an aluminum alloy, but the example embodiment of the disclosure is not limited thereto.

[0329] The (6-1)th connecting member 515 can be disposed between the plate 511 and the rear portion 410 near the (1-1)th hole 411-1 and can connect (or fix) the vibration generator 513 to the rear portion 410. The (6-1)th connecting member 515 can include a double-sided tape or a double-sided foam tape including an adhesive layer. The adhesive layer of the (6-1)th connecting member 515 according to the example embodiment of the disclosure can include an acrylic-based or a polyurethane-based adhesive member. For example, the adhesive layer of the (6-1)th connecting member 515 can include a polyurethane-based adhesive material having a relatively ductile property compared to an acrylic-based adhesive material having a relatively high hardness, thereby minimizing vibration of the vibration generator 513 transmitted to the rear portion 410, but the example embodiment of the disclosure is not limited thereto.

[0330] The (6-2) connection member 535 can be disposed between the plate 531 and the rear portion 410 near the (1-2) hole 411-2. Accordingly, the (6-2) connection member 535 can connect (or fix) the vibration generator 533 to the rear portion 410. The (6-2) connection member 535 can include a double-sided tape or a double-sided foam tape including an adhesive layer. The adhesive layer of the (6-2) connection member 535 according to an exemplary embodiment of the present disclosure can include an acrylic-based or a polyurethane-based adhesive member. For example, the adhesive layer of the (6-2) connection member 535 can include a polyurethane-based adhesive material having a relatively ductile property compared to an acrylic-based adhesive material having a relatively high hardness, thereby minimizing the vibration of the vibration generator 533 transmitted to the rear portion 410, but exemplary embodiments of the present disclosure are not limited thereto.

[0331] The vibration generators 513 and 533 can be disposed at the rear surfaces of the plates 511 and 531. The vibration generators 513 and 533 can be disposed at the plates 511 and 531 and can vibrate the plates 511 and 531. The vibration generators 513 and 533 can overlap the first holes 411-1 and 411-2 of the rear portion 410. For example, the vibration generators 513 and 533 can be disposed at the rear surfaces of the plates 511 and 531 to overlap the first holes 411-1 and 411-2 of the rear portion 410. For example, the vibration generators 513 and 533 can be disposed at the plates 511 and 531 by seventh connection members 517 and 537. The seventh connection member 517 of the present disclosure embodiment can be an eighth connection member, and the seventh connection member 537 of the present disclosure embodiment can be a ninth connection member, but the present disclosure embodiment is not limited to the numbering.

[0332] According to the example embodiment of the disclosure, the vibration generator (or first vibration generator) 513 of the first (1-1) vibration device 510-1 can be disposed at the rear surface of the first plate 511. For example, the vibration generator (or first vibration generator) 513 of the first (1-1) vibration device 510-1 can be disposed at the rear surface of the first plate 511 through the (7-1) connection member 517. For example, the vibration generator (or first vibration generator) 513 of the first (1-1) vibration device 510-1 can overlap the (1-1) hole 411-1 of the rear portion 410 of the first cover 400. According to the example embodiment of the disclosure, the vibration generator (or second vibration generator) 533 of the second (2-1) vibration device 530-1 can be disposed at the rear surface of the second plate 531. For example, the vibration generator (or second vibration generator) 533 of the second (2-1) vibration device 530-1 can be disposed at the rear surface of the second plate 531 through the (7-2) connection member 537. For example, the vibration generator (or second vibration generator) 533 of the second (2-1) vibration device 530-1 can overlap the (1-2) hole 411-2 of the rear portion 410.

[0333] According to the example embodiment of the disclosure, the second cover 700 can be disposed at the rear surface of the first cover 400. The second cover 700 can accommodate (or house) the display member 200 to which one or more vibration devices 500 are disposed (or coupled), and can cover the rear surface of the first cover 400, the lateral surface of the first cover 400, and the lateral surface of the display member 200. For example, the second cover 700 can be referred to as a back cover, a rear back cover, an outermost cover, an outermost back cover, a product cover, or an outermost product cover, etc., but the example embodiment of the disclosure is not limited thereto.

[0334] The second cover 700 according to the example embodiment of the disclosure can include a rear structure 710 and a lateral structure 730.

[0335] The rear structure 710 can be an outermost rear structure disposed at the rear surface of the device. For example, the rear structure 710 can support the display member 200 to which the vibration device 500 is disposed, and can cover the rear surface of the display member 200.

[0336] The lateral structure 730 can be an outermost lateral structure disposed at the lateral surface of the device. For example, the lateral structure 730 can be connected to the periphery of the rear structure 710, and can cover at least one or more of the rear surface of the first cover 400, the lateral surface of the second cover 700, and the lateral surface of the display member 200.

[0337] Referring to Figure 2The second cover 700 according to the exemplary embodiments of the disclosure can further include a cover case 750. For example, the cover case 750 can completely accommodate (or house) the vibration device 500, and can be implemented at the rear structure 710 to completely cover the vibration device 500.

[0338] For example, the cover case 750 can provide an enclosed space between the rear portion 410 of the first cover 400 and the rear structure 710, thereby enhancing the characteristics of the sound generated by the vibration device 500. For example, the enclosed space provided by the cover case 750 can function as a space for a resonance effect, and can amplify the sound pressure level generated by the vibration device 500 based on the resonance effect in the cover case 750. For example, the cover case 750 can be referred to as a sound box, a sound member, or a resonance portion, but the exemplary embodiments of the disclosure are not limited thereto.

[0339] According to the exemplary embodiments of the disclosure, the device can include a first member 600. For example, the first member 600 can be disposed at the rear surface of the first cover 400. For example, the first member 600 can be disposed at the rear surface of the first cover 400 by the eighth connecting member 650. For example, the first member 600 can be disposed between the first cover 400 and the second cover 700. For example, the first member 600 can be disposed to cover all of the vibration device 500. For example, the first member 600 can cover the first hole 411 disposed at the first cover 400. For example, the first member 600 can acoustically seal or partition the space in which the vibration device 500 is disposed. For example, the first member 600 can acoustically seal or partition the space in which the first vibration device 510 is disposed and the space in which the second vibration device 530 is disposed. The first member 600 can prevent or reduce interference between the sound generated in the space in which the first vibration device 510 is disposed and the sound generated in the space in which the second vibration device 530 is disposed, thereby preventing or reducing a decrease in the sound characteristics. The first member 600 can be referred to as a housing, a rear housing, a vibration module case, a vibration module cover, a vibration case, or a sound box, but the exemplary embodiments of the disclosure are not limited thereto. For example, the first member 600 can be a module frame member or a second member, and can be commonly used, but the exemplary embodiments of the disclosure are not limited thereto.

[0340] According to the exemplary embodiments of the disclosure, the eighth connecting member 650 can include a double-sided tape or a double-sided foam tape including an adhesive layer. The adhesive layer of the eighth connecting member 650 according to the exemplary embodiments of the disclosure can include an acrylic-based or a polyurethane-based adhesive member.

[0341] The first member 600 can include a first (1-1) member 610 and a first (1-2) member 630. The first (1-1) member 610 and the first (1-2) member 630 can be disposed at a rear surface of the rear portion 410 of the first cover 400. The first (1-1) member 610 of the present disclosure embodiment can be a first member (a first housing member), and the first (1-2) member 630 of the present disclosure embodiment can be a second member (a second housing member), but the present disclosure embodiment is not limited to the numbering.

[0342] According to an exemplary embodiment of the present disclosure, the first (1-1) member 610 can be disposed at the first area A1 of the rear portion 410 of the first cover 400. For example, the first (1-1) member 610 can cover the first vibration device 510. For example, the first (1-1) member 610 can cover the first (1-1) hole 411-1 disposed at the rear portion 410 of the first cover 400.

[0343] The first (1-1) member 610 according to an exemplary embodiment of the present disclosure can have a quadrangular shape covering the first vibration device 510, but the present disclosure exemplary embodiment is not limited thereto. For example, the first (1-1) member 610 can have the same shape or a different shape from that of the first vibration device 510. For example, in the case where the first vibration device 510 has a square shape, the first (1-1) member 610 can have a square shape having a size (width) greater than that of the first vibration device 510, or can have a circular shape or an elliptical shape. However, the present disclosure embodiment is not limited thereto.

[0344] The first (1-1) member 610 can limit (or define) a vibration area (or a vibration region) of the display member 200 based on the first vibration device 510. For example, in the first portion P1 of the display member 200, as the size of the first (1-1) member 610 increases, the vibration area of the first portion P1 can increase. Accordingly, the bass band characteristic of the left sound can be enhanced. As another exemplary embodiment of the present disclosure, in the first portion P1 of the display member 200, as the size of the first (1-1) member 610 decreases, the vibration area of the first portion P1 can decrease. Accordingly, the treble band characteristic of the left sound can be enhanced. Accordingly, the size of the first (1-1) member 610 can be set according to a desired characteristic of a tone band based on vibration of the display member 200 based on vibration of the first vibration device 510.

[0345] According to an exemplary embodiment of the present disclosure, the first (1-2) member 630 can be disposed at the second area A2 of the rear portion 410 of the first cover 400. For example, the first (1-2) member 630 can cover the second vibration device 530. For example, the first (1-2) member 630 can cover the first (1-2) hole 411-2 disposed at the rear portion 410 of the first cover 400.

[0346] The (1-2) member 630 according to an exemplary embodiment of the present disclosure can have a quadrangular shape covering the second vibration device 530, but exemplary embodiments of the present disclosure are not limited thereto. For example, the (1-2) member 630 can have a shape identical to or different from that of the second vibration device 530. For example, when the second vibration device 530 has a square shape, the (1-2) member 630 can have a square shape having a size (width) greater than that of the second vibration device 530, or can have a circular shape or an elliptical shape. However, exemplary embodiments of the present disclosure are not limited thereto.

[0347] The (1-2) member 630 according to an exemplary embodiment of the present disclosure can have a shape identical to that of the (1-1) member 610 for symmetry between left sound and right sound. The (1-2) member 630 can have a structure symmetrical to the (1-1) member 610 with respect to the first center line CL1 of the display member 200.

[0348] The (1-2) member 630 can limit (or define) a vibration region (or a vibration area) of the display member 200 based on vibration of the second vibration device 530. For example, in the second portion P2 of the display member 200, as the size of the (1-2) member 630 increases, the vibration region of the second portion P2 can increase. Accordingly, a bass sound band characteristic of the right sound can be enhanced. As another exemplary embodiment of the present disclosure, in the second portion P2 of the display member 200, as the size of the (1-2) member 630 decreases, the vibration region of the second portion P2 can decrease, and thus a treble sound band characteristic of the right sound can be enhanced. Accordingly, the size of the (1-2) member 630 can be set according to a desired characteristic of a sound band based on vibration of the display member 200 based on vibration of the second vibration device 530.

[0349] The (1-1) member 610 and the (1-2) member 630 can limit a vibration region (or a vibration area) of the first vibration device 510 and a vibration region (or a vibration area) of the second vibration device 530. Accordingly, horizontal symmetry between left sound and right sound generated based on vibration of the display member 200 can be enhanced, and a sound pressure level characteristic and / or a reproduction sound band of each of the left sound and the right sound can be optimized.

[0350] According to an exemplary embodiment of the present disclosure, the plates 511 and 531, the vibration generators 513 and 533, and the first members 610 and 630 can constitute vibration generation devices. For example, the first plate 511, the first vibration generator 513, and the (1-1) member 610 can constitute a first vibration generation device. For example, the second plate 531, the second vibration generator 533, and the (1-2) member 630 can constitute a second vibration generation device.

[0351] According to an exemplary embodiment of this disclosure, because the first component 600 is provided, the air impedance of the corresponding vibrating device 500 can be controlled, thereby providing a device that allows the vocal cords to extend. Furthermore, the device according to an exemplary embodiment of this disclosure may include a diaphragm-type vibrating device, providing sound characteristics with enhanced sound pressure level and / or including high-pitched vocal cords. Additionally, the thickness of the device can be reduced, thereby providing a device with a compact structure.

[0352] Figure 5 yes Figure 3 An enlarged view of region "B" shown in the image. Figure 6 yes Figure 3 An enlarged view of region "C" shown in the diagram.

[0353] Reference Figure 5 and Figure 6 Plates 511 and 531 may have a second thickness T2 that is smaller than the first thickness T1 of the rear portion 410 of the first cover 400. Therefore, the vibration devices 510 and 530 can enhance the sound S of the mid-to-high pitch vocal bands in which the sound pressure level characteristics and / or sound quality can at least be suitable. When the second thickness T2 of plates 511 and 531 is thicker than the first thickness T1 of the rear portion 410, the vibration of vibration generators 513 and 533 may not propagate sufficiently into the internal regions of the first holes 411-1 and 411-2 of the rear portion 410 of the first cover 400. Plates 511 and 531 may vibrate based on the vibration of vibration generators 513 and 533 to generate the sound (or sound pressure level) of the mid-to-high pitch vocal bands at 3 kHz or higher, and the generated sound can propagate into the internal regions of the first holes 411-1 and 411-2.

[0354] According to an exemplary embodiment of this disclosure, the (1-1)th component 610 can individually cover the first vibration device 510. Figure 5 In the first cover 400, the (1-1) vibration device 510-1 can cover the (1-1) hole 411-1 located at the rear portion 410 of the first cover 400. Therefore, the first air gap AG1 can be located at the (1-1) member 610. For example, the internal portion of the (1-2) member 630 can include a single space and can include two or more divided spaces. In the case where the (1-2) member 630 includes two or more divided spaces, the internal area of ​​the device can be used. In the case where the (1-2) member 630 includes two or more divided spaces, the two or more spaces can be connected (or communicate) with each other through channels. For example, the (1-2) member 630 can have a sealing structure or a structure including ventilation holes (e.g., a ventilation structure).

[0355] According to an example embodiment of the disclosure, the (1-1) member 610 can be disposed at a rear surface of the rear portion 410 of the first cover 400. For example, the (1-1) member 610 can be disposed at the rear surface of the rear portion 410 of the first cover 400 by the (8-1) connecting member 651.

[0356] The (1-1) member 610 according to an example embodiment of the disclosure can include a bottom portion 611 and a lateral portion 613.

[0357] According to an example embodiment of the disclosure, the bottom portion 611 of the (1-1) member 610 can be disposed at a rear surface of the first vibration device 510( Figure 5 , the (1-1) vibration device 510-1), and can cover the rear surface of the first vibration device 510. For example, the lateral portion 613 of the (1-1) member 610 can be disposed at a lateral surface of the first vibration device 510, and can cover the lateral surface of the first vibration device 510. For example, the lateral portion 613 can be connected to one side (or end) of the bottom portion 611, and can be disposed along a periphery of the bottom portion 611. For example, one side (or one end) of the lateral portion 613 can be disposed at the rear surface of the rear portion 410 of the first cover 400 by the (8-1) connecting member 651. For example, the bottom portion 611 of the (1-1) member 610 can be referred to as a first bottom frame or a first bottom member, but example embodiments of the disclosure are not limited thereto. For example, the lateral portion 613 of the (1-1) member 610 can be referred to as a side wall portion, a first lateral frame, a first side wall frame, or a first side wall member, but example embodiments of the disclosure are not limited thereto.

[0358] The (1-1) member 610 can limit (or define) a vibration region (or a vibration area) of the display member 200 based on the first vibration device 510. For example, in the first portion P1 of the display member 200, as the size of the (1-1) member 610 increases, the vibration region of the first portion P1 can increase. Accordingly, the bass band characteristic of the left sound can be enhanced. As another example embodiment of the disclosure, in the first portion P1 of the display member 200, as the size of the (1-1) member 610 decreases, the vibration region of the first portion P1 can decrease. Accordingly, the treble band characteristic of the left sound can be enhanced. For example, the size of the (1-1) member 610 can be set according to a desired characteristic of a tone band based on vibration of the display member 200 based on vibration of the first vibration device 510.

[0359] According to an example embodiment of the disclosure, the (1-2) member 630 can individually cover the second vibration device 530( Figure 6In the middle, the (2-1)th vibration device 530-1), and can cover the (1-2)th hole 411-2 disposed at the rear portion 410 of the first cover 400. Accordingly, the second air gap AG2 can be disposed at the (1-2)th member 630. For example, the inner portion of the (1-2)th member 630 can include a single space, and can include two or more partitioned spaces. In the case where the (1-2)th member 630 includes two or more partitioned spaces, an inner region of the device can be used. When the (1-2)th member 630 includes two or more partitioned spaces, the two or more spaces can be connected (or communicated) to each other through a passage. For example, the (1-2)th member 630 can have a sealed structure or a structure including a vent hole (e.g., a vent structure).

[0360] According to an exemplary embodiment of the disclosure, the (1-2)th member 630 can be disposed at the rear surface of the rear portion 410 of the first cover 400. For example, the (1-2)th member 630 can be disposed at the rear surface of the rear portion 410 of the first cover 400 by using the (8-2)th connecting member 653.

[0361] The (1-2)th member 630 according to an exemplary embodiment of the disclosure can have the same shape as that of the (1-1)th member 610 for symmetry between left sound and right sound, and can have a structure symmetrical to the (1-1)th member 610 with respect to the first center line CL1 of the display member 200.

[0362] The (1-2)th member 630 according to an exemplary embodiment of the disclosure can include a bottom portion 631 and a lateral portion 633.

[0363] According to an exemplary embodiment of the disclosure, the bottom portion 631 of the (1-2)th member 630 can be disposed at the second vibration device 530( Figure 6For example, the lateral portion 633 of the (1-2) member 630 can be disposed at the lateral surface of the second vibration device 530, and can cover the lateral surface of the second vibration device 530. For example, the lateral portion 633 can be connected to one side (or end) of the bottom portion 631, and can be disposed along the periphery of the bottom portion 631. For example, one side (or end) of the lateral portion 633 can be disposed at the rear surface of the rear portion 410 of the first cover 400 by the (8-2) connecting member 653. For example, the bottom portion 631 of the (1-2) member 630 can be referred to as a second bottom frame or a second bottom member, but the exemplary embodiments of the present disclosure are not limited thereto. For example, the lateral portion 633 of the (1-2) member 630 can be referred to as a side wall portion, a second lateral frame, a second side wall frame, or a second side wall member, but the exemplary embodiments of the present disclosure are not limited thereto.

[0364] The (1-2) member 630 can limit (or define) a vibration region (or a vibration area) of the display member 200 based on the vibration of the second vibration device 530. Figure 6 For example, in the second portion P2 of the display member 200, as the size of the (1-2) member 630 increases, the vibration region of the first portion P1 can increase. Accordingly, the bass band characteristic of the right sound can be enhanced. As another exemplary embodiment of the present disclosure, in the second portion P2 of the display member 200, as the size of the (1-2) member 630 decreases, the vibration region of the second portion P2 can decrease. Accordingly, the treble band characteristic of the right sound can be enhanced. For example, the size of the (1-2) member 630 can be set according to a desired characteristic of the tone band based on the vibration of the display member 200 based on the vibration of the second vibration device 530.

[0365] The (1-1) member 610 and the (1-2) member 630 can limit the vibration region (or the vibration area) of the first vibration device 510 and the vibration region (or the vibration area) of the second vibration device 530. Accordingly, the horizontal symmetry between the left sound and the right sound generated based on the vibration of the display member 200 can be enhanced, and the sound pressure level characteristic and / or the reproduction tone band of each of the left sound and the right sound can be optimized.

[0366] According to an exemplary embodiment of the present disclosure, the plates 511 and 531, the vibration generators 513 and 533, and the first members 610 and 630 can constitute vibration generation devices. For example, the first plate 511, the first vibration generator 513, and the (1-1) member 610 can constitute a first vibration generation device. For example, the second plate 531, the second vibration generator 533, and the (1-2) member 630 can constitute a second vibration generation device.

[0367] Figure 7 A vibration generator according to an exemplary embodiment of the present disclosure is illustrated. Figure 8 is a cross-sectional view taken along Figure 7 line II-II' shown in FIG. 1.

[0368] Referring to Figure 7 and Figure 8 , each of the vibration generators 513 and 533 according to an exemplary embodiment of the present disclosure can alternately and / or repeatedly contract and expand based on a piezoelectric effect (or piezoelectric property) to vibrate. For example, each of the vibration generators 513 and 533 can alternately and / or repeatedly contract and expand based on a converse piezoelectric effect to vibrate in the thickness direction Z, thereby directly vibrating the display member 200. For example, each of the vibration generators 513 and 533 can have a quadrangular shape or a square shape, but exemplary embodiments of the present disclosure are not limited thereto.

[0369] Each of the vibration generators 513 and 533 according to an exemplary embodiment of the present disclosure can include a vibration portion (or vibration layer) PCL, a first electrode layer E1, and a second electrode layer E2. For example, a structure including the vibration portion PCL, the first electrode layer E1, and the second electrode layer E2 can be referred to as a vibration device (or vibrator) PCM.

[0370] The vibration portion PCL can include a piezoelectric material, a composite piezoelectric material, or an electroactive material, and the piezoelectric material, the composite piezoelectric material, and the electroactive material can have a piezoelectric effect. The vibration portion PCL can be referred to as a vibration layer, a piezoelectric material layer, a piezoelectric composite layer, an electroactive layer, a piezoelectric material portion, a piezoelectric composite material layer, an electroactive portion, a piezoelectric structure, a piezoelectric composite, or a piezoelectric ceramic composite, but exemplary embodiments of the present disclosure are not limited thereto.

[0371] The vibration portion PCL according to an exemplary embodiment of the present disclosure can include a ceramic-based material capable of achieving a relatively high vibration. For example, the vibration portion PCL can include a 1-3 composite structure or a 2-2 composite structure. For example, a piezoelectric deformation coefficient "d 33 " of the vibration portion PCL in the thickness direction Z can have 1000 pC / N or more, but exemplary embodiments of the present disclosure are not limited thereto.

[0372] The first electrode layer E1 can be disposed at a first surface (or an upper or front surface) of the vibration portion PCL and can be electrically connected to the first surface of the vibration portion PCL. For example, the first electrode layer E1 can have a single electrode shape (or a common electrode shape) disposed at the entire first surface of the vibration portion PCL. The first electrode layer E1 according to an exemplary embodiment of the present disclosure can include a transparent conductive material, a semi-transparent (or semi-translucent) conductive material, or an opaque conductive material. For example, examples of the transparent conductive material or the semi-transparent conductive material can include indium tin oxide (ITO) or indium zinc oxide (IZO), but the exemplary embodiment of the present disclosure is not limited thereto. The opaque conductive material can include aluminum (Al), copper (Cu), gold (Au), silver (Ag), molybdenum (Mo), magnesium Mg, etc., or an alloy of any of these materials, but the exemplary embodiment of the present disclosure is not limited thereto.

[0373] The second electrode layer E2 can be at a second surface (or a lower or rear surface) opposite the first surface of the vibration portion PCL and can be electrically connected to the second surface of the vibration portion PCL. For example, the second electrode layer E2 can have a single electrode shape (or a common electrode shape or a single electrode shape) disposed at the entire second surface of the vibration portion PCL. The second electrode layer E2 according to an exemplary embodiment of the present disclosure can include a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material. For example, the second electrode layer E2 can include the same material as that of the first electrode layer E1, but the exemplary embodiment of the present disclosure is not limited thereto. As another exemplary embodiment of the present disclosure, the second electrode layer E2 can include a different material from that of the first electrode layer E1.

[0374] The vibration portion PCL can be polarized (or polarized) in a specific temperature gas or in a temperature gas that can change from a high temperature to a room temperature by a specific voltage applied to the first electrode layer E1 and the second electrode layer E2, but the exemplary embodiment of the present disclosure is not limited thereto.

[0375] Each of the vibration generators 513 and 533 according to an exemplary embodiment of the present disclosure can further include a first protective member 501 and a second protective member 502.

[0376] The first protective member 501 can be disposed at a first surface of the vibration device PCM. For example, the first protective member 501 can cover the first electrode layer E1 disposed at the first surface of the vibration device PCM. Accordingly, the first protective member 501 can support the first surface of the vibration device PCM and can protect the first surface of the vibration device PCM or the first electrode layer E1.

[0377] The first protection member 501 according to the exemplary embodiment of the disclosure can be disposed at the first surface of the vibration device PCM by the first adhesive layer 503. For example, the first protection member 501 can be connected or attached to the first surface of the vibration device PCM by a film lamination process using the first adhesive layer 503.

[0378] The second protection member 502 can be disposed at the second surface of the vibration device PCM. For example, the second protection member 502 can cover the second electrode layer E2 disposed at the second surface of the vibration device PCM. Accordingly, the second protection member 502 can support the second surface of the vibration device PCM, and can protect the second surface or the second electrode layer E2 of the vibration device PCM.

[0379] The second protection member 502 can be disposed at the second surface of the vibration device PCM by the second adhesive layer 504. For example, the second protection member 502 can be connected or attached to the second surface of the vibration device PCM by a film lamination process using the second adhesive layer 504.

[0380] Each of the first protection member 501 and the second protection member 502 according to the exemplary embodiment of the disclosure can include a plastic film. For example, each of the first protection member 501 and the second protection member 502 can be a polyimide (PI) film or a polyethylene terephthalate (PET) film, but the exemplary embodiment of the disclosure is not limited thereto.

[0381] The first adhesive layer 503 can be disposed at the first surface of the vibration device PCM. For example, the first adhesive layer 503 can be formed at a rear surface (or an inner surface) of the first protection member 501 facing the first surface of the vibration device PCM, and can be disposed at the first surface of the vibration device PCM.

[0382] The second adhesive layer 504 can be disposed at the second surface of the vibration device PCM. For example, the second adhesive layer 504 can be formed at a front surface (or an inner surface) of the second protection member 502 facing the second surface of the vibration device PCM, and can be disposed at the second surface of the vibration device PCM.

[0383] The vibration device PCM can be surrounded by the first adhesive layer 503 and the second adhesive layer 504. For example, the first adhesive layer 503 and the second adhesive layer 504 can completely surround the entire vibration device PCM. For example, the first adhesive layer 503 and the second adhesive layer 504 can be referred to as a cover member or the like, but the exemplary embodiments of the present disclosure are not limited thereto. When each of the first adhesive layer 503 and the second adhesive layer 504 collectively forms a cover member, the first protective member 501 can be disposed at a first surface of the cover member, and the second protective member 502 can be disposed at a second surface of the cover member. For example, for convenience of description, the first adhesive layer 503 and the second adhesive layer 504 are illustrated as the first adhesive layer 503 and the second adhesive layer 504, but the exemplary embodiments of the present disclosure are not limited thereto, and they can be disposed as one adhesive layer.

[0384] Each of the first adhesive layer 503 and the second adhesive layer 504 according to the exemplary embodiments of the present disclosure can include an electrically insulating material having adhesiveness, and can include a material capable of compression and decompression. For example, each of the first adhesive layer 503 and the second adhesive layer 504 can include an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane resin, but the exemplary embodiments of the present disclosure are not limited thereto.

[0385] Each of the vibration generators 513 and 533 according to the exemplary embodiments of the present disclosure can further include a first power line PL1, a second power line PL2, and a pad portion 505.

[0386] The first power line PL1 can be disposed at the first protective member 501. For example, the first power line PL1 can be disposed at a rear surface of the first surface of the first protective member 501 facing the vibration device PCM. The first power line PL1 can be electrically connected to the first electrode layer E1 of the vibration device PCM. For example, the first power line PL1 can be directly electrically connected to the first electrode layer E1 of the vibration device PCM. For example, the first power line PL1 can be electrically connected to the first electrode layer E1 of the vibration device PCM through an anisotropic conductive film. As another exemplary embodiment of the present disclosure, the first power line PL1 can be electrically connected to the first electrode layer E1 of the vibration device PCM through a conductive material (or particles) included in the first adhesive layer 503.

[0387] The second power line PL2 can be provided at the second protective member 502. For example, the second power line PL2 can be provided at a front surface of a second surface of the second protective member 502 facing the vibration device PCM. The second power line PL2 can be electrically connected to the second electrode layer E2 of the vibration device PCM. For example, the second power line PL2 can be directly electrically connected to the second electrode layer E2 of the vibration device PCM. For example, the second power line PL2 can be electrically connected to the second electrode layer E2 of the vibration device PCM through an anisotropic conductive film. As another example embodiment of the present disclosure, the second power line PL2 can be electrically connected to the second electrode layer E2 of the vibration device PCM through a conductive material (or particles) included in the second adhesive layer 504.

[0388] The pad portion 505 can be electrically connected to the first power line PL1 and the second power line PL2. For example, the pad portion 505 can be provided at each of the vibration generators 513 and 533 to be electrically connected to a portion (or one end) of each of the first power line PL1 and the second power line PL2. The pad portion 505 according to an example embodiment of the present disclosure can include a first pad electrode and a second pad electrode. The first pad electrode can be electrically connected to a portion of the first power line PL1. The second pad electrode can be electrically connected to a portion of the second power line PL2.

[0389] Each of the vibration generators 513 and 533 according to an example embodiment of the present disclosure can further include a flexible cable 506.

[0390] The flexible cable 506 can be electrically connected to the pad portion 505 provided at the vibration generators 513 and 533, and can provide a driving signal (or a sound signal) provided from the sound processing circuit to the vibration device PCM. The flexible cable 506 according to an example embodiment of the present disclosure can include a first terminal and a second terminal. The first terminal can be electrically connected to the first pad electrode of the pad portion 505. The second terminal can be electrically connected to the second pad electrode of the pad portion 505. For example, the flexible cable 506 can be configured as a flexible printed circuit cable or a flexible flat cable, but example embodiments of the present disclosure are not limited thereto.

[0391] The sound processing circuit (or vibration driving circuit) can generate an alternating current (AC) vibration driving signal including a first polarity driving signal and a second polarity driving signal based on a sound source. The first polarity driving signal can be one of a positive (+) driving signal and a negative (-) driving signal, and the second polarity driving signal can be one of a positive (+) driving signal and a negative (-) driving signal. For example, the first polarity driving signal can be provided to the first electrode layer E1 of each of the vibration generators 513 and 533 through the first terminal of the flexible cable 506, the first pad electrode of the pad portion 505, and the first power line PL1. The second polarity driving signal can be provided to the second electrode layer E2 of each of the vibration generators 513 and 533 through the second terminal of the flexible cable 506, the second pad electrode of the pad portion 505, and the second power line PL2.

[0392] Figures 9A-9F A vibration portion of a vibration generator according to an exemplary embodiment of the present disclosure is illustrated.

[0393] The vibration portion PCL according to an exemplary embodiment of the present disclosure can include a plurality of first portions PCLa and a plurality of second portions PCLb located between the plurality of first portions PCLa. The first portions PCLa can include an inorganic material, and the second portions PCLb can include an organic material. The first portions PCLa and the second portions PCLb can be connected to each other in a planar direction, and thus the first vibration device 510 and the second vibration device 530 can be implemented as one membrane. Based on such a configuration, since the vibration devices 510 and 530 can be implemented as one membrane, the vibration devices 510 and 530 having a smaller thickness can be implemented compared to a structure in which a plurality of piezoelectric elements are stacked. Accordingly, an increase in the thickness of a display device caused by the arrangement of the vibration devices 510 and 530 can be reduced.

[0394] Each of the plurality of first portions PCLa according to an exemplary embodiment of the present disclosure can include an inorganic material or a piezoelectric material, and can vibrate based on a piezoelectric effect (or piezoelectric property) caused by an electric field. For example, each of the plurality of first portions PCLa can be referred to as an electroactive portion, an inorganic material portion, a piezoelectric material portion, or a vibration portion, etc., but exemplary embodiments of the present disclosure are not limited thereto.

[0395] According to the exemplary embodiments of the present disclosure, each of the plurality of first portions PCLa can include a ceramic-based material configured to generate a relatively high vibration, or can include a piezoelectric ceramic having a perovskite-based crystal structure. The peroviskite crystal structure can have a piezoelectric effect and a converse piezoelectric effect, and can be a structure having a directionality. The peroviskite crystal structure can be represented by a chemical formula "ABO3". In the chemical formula, "A" can include a divalent metal element, and "B" can include a tetravalent metal element. For example, 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 lead titanate (II) (PbTiO3), lead zirconate (PbZrO3), barium titanate (BaTiO3), and strontium titanate (SrTiO3), but the exemplary embodiments of the present disclosure are not limited thereto.

[0396] In an example in which the peroviskite crystal structure includes a central ion (e.g., PbTiO3, e.g., lead titanate (II), lead titanium oxide, or lead titanate having a peroviskite structure), the position of a titanium (Ti) ion can be changed by an external stress or a magnetic field. Accordingly, polarization can be changed, thereby generating a piezoelectric effect. For example, in the peroviskite crystal structure, a cubic shape corresponding to a symmetric structure can be changed to a tetragonal (or tetartohedral), orthorhombic, or rhombohedral structure corresponding to an asymmetric structure. Accordingly, a piezoelectric effect can be generated. In the tetragonal, orthorhombic, or rhombohedral structure corresponding to the asymmetric structure, the polarization rate at the morphotropic phase boundary can be relatively high, and the polarization rate can be relatively easily rearranged, and thus the peroviskite crystal structure can have a higher piezoelectric property.

[0397] For example, the inorganic material included in each of the plurality of first portions PCLa can include one or more materials of lead (Pb), zirconium (Zr), titanium (Ti), zinc (Zn), nickel (Ni), niobium (Nb), magnesium (Mg), manganese (Mn), and indium (In), but the exemplary embodiments of the present disclosure are not limited thereto. For another example, the inorganic material included in each of the plurality of first portions PCLa can include a lead zirconium titanate (PZT)-based material including lead (Pb), zirconium (Zr), and titanium (Ti), or can include a lead zirconate nickel niobate (PZNN)-based material including lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but the exemplary embodiments of the present disclosure are not limited thereto. According to another exemplary embodiment of the present disclosure, the inorganic material included in each of the plurality of first portions PCLa can include a lead magnesium niobate (PMN)-based material, a lead nickel niobate (PNN)-based material, a lead zirconate niobate (PZN)-based material, or a lead indium niobate (PIN)-based material, but the exemplary embodiments of the present disclosure are not limited thereto. The PMN-based material can include Pb, Mg, and Nb, and for example, can include Pb(Mg,Nb)O3. The PNN-based material can include Pb, Ni, and Nb, and for example, can include Pb(Ni,Nb)O3. The PIN-based material can include Pb, In, and Nb, and for example, can include Pb(In,Nb)O3. According to another exemplary embodiment of the present disclosure, the inorganic material can include at least one or more of calcium titanate (CaTiO3), BaTiO3, SrTiO3, which do not have Pb, but the exemplary embodiments of the present disclosure are not limited thereto.

[0398] The plurality of second portions PCLb according to the exemplary embodiments of the present disclosure can have a modulus (or Young's modulus) and a viscoelasticity lower than those of the first portions PCLa. Accordingly, the second portions PCLb can enhance the reliability of the first portions PCLa, which are vulnerable to impact due to the fragile characteristics. In order to make the first vibration device 510 and the second vibration device 530 have impact resistance and high stiffness, each of the plurality of second portions PCLb can include a material having a relatively high damping factor (tan δ) and a relatively high stiffness. For example, each of the plurality of second portions PCLb can include a material having a damping factor (tan δ) of about 0.1 GPa (giga pascal) to about 1 GPa (giga pascal) and a relatively high stiffness of about 0 GPa (giga pascal) to about 10 GPa (giga pascal). Further, the damping factor (tan δ) and the stiffness characteristics can be described based on a correlation between a loss coefficient and a modulus. For example, the plurality of second portions PCLb can include a material having a loss coefficient of about 0.01 to about 1.0 and a modulus of about 0.1 GPa (giga pascal) to about 10 GPa (giga pascal).

[0399] The organic material in each of the plurality of second portions PCLb can include an organic material or an organic polymer having a flexible property compared to the inorganic material of each of the first portions PCLa. For example, each of the plurality of second portions PCLb can include an organic material, an organic polymer, an organic piezoelectric material, or an organic non-piezoelectric material. For example, each of the plurality of second portions PCLb can be referred to as a flexible adhesive portion, an elastic portion, a bending portion, a damping portion, or a flexible portion, but the example embodiments of the present disclosure are not limited thereto.

[0400] The organic material according to the example embodiments of the present disclosure can include at least one of an organic piezoelectric material and an organic non-piezoelectric material.

[0401] The organic material including the organic piezoelectric material can absorb an impact applied to the inorganic material (or the first portion PCLa). Accordingly, the organic material portion can enhance the total durability of the first vibration device 510 and the second vibration device 530, and can provide a piezoelectric property corresponding to a certain level or higher. The organic piezoelectric material according to the example embodiments of the present disclosure can be an organic material having an electroactive property. The organic material including the organic non-piezoelectric material can be configured to include a curable resin composition and an adhesive including the curable resin composition. Accordingly, the organic material can absorb an impact applied to the inorganic material (or the first portion PCLa), thereby enhancing the total durability of the first vibration device 510 and the second vibration device 530. The organic non-piezoelectric material according to the example embodiments of the present disclosure can include at least one or more of an epoxy-based polymer, an acryl-based polymer, and a silicon-based polymer, but the example embodiments of the present disclosure are not limited thereto.

[0402] According to the example embodiments of the present disclosure, the organic material including the organic non-piezoelectric material can include an adhesion promoter or an adhesion enhancer for adhesion between the epoxy resin and the inorganic material portion, for high stiffness properties of the first vibration device 510 and the second vibration device 530. For example, the adhesion promoter can be a phosphate or the like, but the example embodiments of the present disclosure are not limited thereto. The organic material can be cured by at least one of a thermal curing process and a photo-curing process. In the process of curing the organic material, a solvent-free type epoxy resin can be used to avoid or prevent a decrease in thickness uniformity of the first vibration device 510 and the second vibration device 530 due to shrinkage of the organic material caused by volatilization of a solvent.

[0403] According to another exemplary embodiment of the disclosure, in addition to the high rigidity of the first vibration device 510 and the second vibration device 530, the organic material including the organic non-piezoelectric material can further include, for example, a reinforcing agent for damping characteristics. For example, the reinforcing agent can be a methyl methacrylate-butadiene-styrene (MBS) or the like having a core-shell type, and the content thereof can be about 5 wt% to about 40 wt%. The reinforcing agent can be an elastomer having a core-shell type, and the shell portion can have a high coupling force with an epoxy resin such as an acrylic-based polymer. Accordingly, the reinforcing agent can enhance the impact resistance or damping characteristics of the first vibration device 510 and the second vibration device 530.

[0404] The plurality of first portions PCLa and the plurality of second portions PCLb of the vibration portion PCL according to the exemplary embodiment of the disclosure can be alternately and repeatedly arranged in the first direction X (or the second direction Y). For example, the first direction X can be a width direction of the vibration portion PCL, and the second direction Y can be a length direction of the vibration portion PCL, but the exemplary embodiment of the disclosure is not limited thereto. For example, the first direction X can be a length direction of the vibration portion PCL, and the second direction Y can be a width direction of the vibration portion PCL.

[0405] Referring to Figure 9A and Figure 9B each of the plurality of first portions PCLa can be disposed between two adjacent second portions PCLb of the plurality of second portions PCLb. For example, each of the plurality of first portions PCLa can have a first width parallel to the first direction X, and can have a length parallel to the second direction Y. Each of the plurality of second portions PCLb can have a second width parallel to the first direction X and a length parallel to the second direction Y. For example, the first width can be greater than the second width. For example, the plurality of first portions PCLa and the plurality of second portions PCLb can have the same size (or width) or different sizes (or widths), can be alternately and repeatedly arranged in the first direction X (or the second direction Y), and can have a linear shape or a stripe shape. Accordingly, Figure 9A and Figure 9B The vibration portion PCL shown in

[0406] According to the exemplary embodiment of the present disclosure, the plurality of first portions PCLa can be disposed spaced apart from each other along the first direction X and the second direction Y, and each of the plurality of second portions PCLb can be disposed to fill a gap between adjacent first portions PCLa or to surround each of the plurality of first portions PCLa (see, for example, Figure 9C 、 Figure 9D 、 Figure 9E and Figure 9F ). For example, the plurality of first portions PCLa can be disposed in a lattice shape to have the same size ( Figure 9C ). For example, the plurality of first portions PCLa can have a planar structure including a circular shape ( Figure 9D ). For example, the plurality of first portions PCLa can have a circular shape, but the exemplary embodiment of the present disclosure is not limited thereto. For example, the plurality of first portions PCLa can have a planar structure including an elliptical shape, a polygonal shape, or a ring shape. For example, the plurality of first portions PCLa can have a planar structure including a triangular shape ( Figure 9E and Figure 9F ).

[0407] The plurality of first portions PCLa and the plurality of second portions PCLb can be disposed in (or connected to) the same plane. Accordingly, the vibration portion PCL according to various embodiments of the present disclosure can have a single thin film type. For example, the vibration portion PCL can vibrate in a vertical direction (or an up-down direction or a thickness direction) by the first portion PCLa having a vibration characteristic, and can be bent in a curved shape by the second portion PCLb having flexibility or elasticity. Further, in the vibration portion PCL according to various embodiments of the present disclosure, the size of the first portion PCLa and the size of the second portion PCLb can be adjusted based on a piezoelectric characteristic and flexibility required for the vibration portion PCL. For example, in a case where the vibration portion PCL requires a piezoelectric characteristic more than flexibility, the size of the first portion PCLa can be adjusted to be greater than the size of the second portion PCLb. As another exemplary embodiment of the present disclosure, in a case where the vibration portion PCL requires flexibility more than a piezoelectric characteristic, the size of the second portion PCLb can be adjusted to be greater than the first portion PCLa. Accordingly, the size of the vibration portion PCL can be adjusted based on a characteristic required for the vibration portion PCL. Accordingly, the design of the vibration portion PCL can be easily adjusted based on a specific requirement or application.

[0408] Figure 10 and Figure 11 are another enlarged view of the area "B" shown in Figure 3 .

[0409] Figure 10 and Figure 11 show Figure 3The first plate 511 of the first vibration device 510 shown in FIG. 10 is modified. The following description can focus more on the modified and related elements, and redundant descriptions for the same or similar elements described above can be given briefly or can be omitted. The description given above with reference to Figure 10 and Figure 11 The description given above with reference to the first plate 511 can be applied equally or similarly to the second plate 531 of the second vibration device 530.

[0410] With reference to Figure 10 and Figure 11 The first plate 511 according to another exemplary embodiment of the disclosure can have a convex-concave curved shape. The curved direction of the first plate 511 can be one or more of a long axis direction, a short axis direction, and a diagonal direction. For example, a portion of the first plate 511 corresponding to (or overlapping) the (1-1)th hole 411-1 can have a convex shape or a concave shape. For example, as shown in Figure 10 , a portion of the first plate 511 corresponding to (or overlapping) the (1-1)th hole 411-1 can be curved toward the (1-1)th hole 411-1. Alternatively, as shown in Figure 11 , a portion of the first plate 511 corresponding to (or overlapping) the (1-1)th hole 411-1 can be curved away from the (1-1)th hole 411-1 or in a direction opposite to the (1-1)th hole 411-1.

[0411] The second plate 531 according to another exemplary embodiment of the disclosure can have the same shape as the first plate 511. For example, similar to the first plate 511, the second plate 531 can have a convex-concave curved shape. For example, the curved direction of the second plate 531 can be one or more of a long axis direction, a short axis direction, and a diagonal direction. For example, a portion of the second plate 531 corresponding to (or overlapping) the (1-2)th hole 411-2 can have a convex shape or a concave shape. As another example, a portion of the second plate 531 corresponding to (or overlapping) the (1-2)th hole 411-2 can be curved toward the (1-2)th hole 411-2. For example, a portion of the second plate 531 corresponding to (or overlapping) the (1-2)th hole 411-2 can be curved away from the (1-2)th hole 411-2 or in a direction opposite to the (1-2)th hole 411-2.

[0412] Figure 12 is another exemplary enlarged view of the region "B" shown in Figure 3 is another exemplary enlarged view of the region "C" shown in Figure 13 shows an exemplary embodiment in which the first plate 511 of the first vibration device 510 shown in FIG. 10 is modified, and Figure 3 Figure 12 Figure 3 Figure 13 ​​​An exemplary embodiment in which the first plate 511 of the second vibration device 530 is modified is shown. Figure 3 The following description can focus more on the modified and related elements, and redundant descriptions of the same or similar elements described above can be given briefly or can be omitted.

[0413] Referring to Figure 12 and Figure 13 , the first plate 511 and the second plate 531 according to another exemplary embodiment of the disclosure can include second holes 511a and 531a, respectively. For example, Figure 12 the second hole 511a of the first plate 511 shown in Figure 10 may be applied to the first plate 511 in Figure 13 and Figure 11 the second hole 531a of the first plate 531 shown in may be applied to the second plate 531 shown in

[0414] According to an exemplary embodiment of the disclosure, the second holes 511a and 531a can be provided at the plates 511 and 531 corresponding to (or overlapping) the first holes 411-1 and 411-2. For example, the second holes 511a and 531a can increase the amount of displacement of the vibration devices 510 and 530. For example, the second holes 511a and 531a can be set based on sound characteristics required for the first vibration device 510 and the second vibration device 530. For example, the number, shape, length, and width of the second holes 511a and 531a can be changed based on sound characteristics required for the first vibration device 510 and the second vibration device 530. The second hole 511a of the disclosure embodiment can be a third hole, and the second hole 511a of the disclosure embodiment can be a fourth hole, but the disclosure embodiment is not limited to the numbering.

[0415] According to an exemplary embodiment of the disclosure, the total area of the second hole (or the (2-1) hole) 511a provided at the first plate 511 of the first vibration device 510 can be the same as or different from the total area of the second hole (or the (2-2) hole) 531a provided at the second plate 531 of the second vibration device 530.

[0416] According to an exemplary embodiment of the disclosure, the number, shape, length, and width of the (2-1) hole 511a provided at the first plate 511 can be the same as the number, shape, length, and width of the (2-2) hole 531a provided at the second plate 531. For example, at least one or more of the number, shape, length, and width of the (2-1) hole 511a can be different from the number, shape, length, and width of the (2-2) hole 531a.

[0417] The second holes 511a and 531a can adjust the amount of displacement of the plates 511 and 531. Accordingly, the second holes 511a and 531a can be disposed in the plates 511 and 531 based on sound characteristics required by the first and second vibration devices 510 and 530, and thus the device can generate sound having desired sound characteristics.

[0418] According to an exemplary embodiment of the present disclosure, the seventh connecting members 517 and 537 can overlap or not overlap the second holes 511a and 531a.

[0419] Figure 14 is an exploded view of a device according to another exemplary embodiment of the present disclosure. Figure 15 is a cross-sectional view taken along the line I-I' of Figure 14 the connecting structure of the exemplary device shown in Figure 1 is another cross-sectional view taken along the line I-I' of Figure 16 is a cross-sectional view taken along the line I-I' of Figure 15 is a magnified view of the area "D" shown in

[0420] Figures 14-16 The device according to another exemplary embodiment of the present disclosure shown in Figures 1-13 The device according to another exemplary embodiment of the present disclosure shown in

[0421] Referring to Figures 14-16 , the first cover 400 according to another exemplary embodiment of the present disclosure can include a third hole 413 disposed at the rear portion 410 thereof. For example, the third hole 413 can increase the amount of sound generated based on the vibration of the vibration devices 510 and 530 and transmitted to the front surface of the device. For example, the third hole 413 can be disposed at the first cover 400 overlapping the vibration devices 500, and the rear surface of the backlight member 230 can be exposed through the third hole 413. For example, the rear surface of the backlight member 230 can be exposed to the vibration devices 510 and 530 through the third hole 413. For example, the reflective sheet 235 of the backlight member 230 can be exposed in a direction toward the rear surface of the first cover 400 through the third hole 413. For example, the reflective sheet 235 of the backlight member 230 can be exposed to the vibration devices 510 and 530 through the third hole 413. For example, the third hole 413 can be disposed at or above each of the first and second areas A1 and A2 of the rear portion 410 of the first cover 400.

[0422] According to an example embodiment of the disclosure, the third hole 413 can include a first (3-1) hole 413-1 and a second (3-2) hole 413-2. For example, the first (3-1) hole 413-1 can be disposed at the first area A1. For example, the second (3-2) hole 413-2 can be disposed at the second area A2. For example, the first (3-1) hole 413-1 can be disposed at or above the first middle area MA1 or the first peripheral area EA1. For example, the second (3-2) hole 413-2 can be disposed at or above the second middle area MA2 or the second peripheral area EA2. The first (3-1) hole 413-1 of the example embodiment of the disclosure can be a first hole, and the second (3-2) hole 413-2 of the example embodiment of the disclosure can be a second hole, but the example embodiment of the disclosure is not limited to the numbering.

[0423] The third hole 413 can provide a second gap space between the display member 200 and the corresponding vibration device 500. For example, the third hole 413 can provide a second gap space between the backlight part 230 of the display member 200 and the vibration device 500. For example, the second gap space can be referred to as a sound pressure level space (or a sound portion) on which a sound pressure level based on vibration of the vibration device 500 is generated based on vibration driven by the vibration device 500, or a vibration space on which a sound wave propagates based on vibration driven by the vibration device 500 through a sound wave propagation path (or a sound energy incidence portion) through which a sound wave generated based on vibration of the vibration device 500 is directly propagated to the display member 200, but the example embodiment of the disclosure is not limited thereto.

[0424] The vibration device 500 according to another example embodiment of the disclosure can include a first vibration device 510 (including, for example, a first (1-1) vibration device 510-1 in the first area A1) and a second vibration device 530 (including, for example, a second (2-1) vibration device 530-1 in the second area A2), but the example embodiment of the disclosure is not limited thereto.

[0425] The first vibration device 510 according to an example embodiment of the disclosure can be disposed at a rear surface of the rear part 410 of the first cover 400. For example, the first vibration device 510 can be disposed at the first area A1 of the first cover 400 and can vibrate the first area A1 of the first cover 400 in response to a first driving signal to vibrate the first part P1 of the display member 200. Accordingly, the first vibration device 510 can generate a first sound S1 of a first tonal sound band based on vibration of the first part P1 of the display member 200, or can generate a first haptic feedback (or a first haptic vibration) in response to a touch (for example, by a user).

[0426] The first vibration device 510 can include a first (1-1) vibration device 510-1, a second (1-2) vibration device 510-2, and a second member 510-3, but the example embodiments of the present disclosure are not limited thereto. For example, the first (1-1) vibration device 510-1 and the second (1-2) vibration device 510-2 can be disposed adjacent to each other. For example, the second member 510-3 can be a first support member or a first guide member or a first member, and can be commonly used. However, the example embodiments of the present disclosure are not limited thereto. According to another example embodiment of the present disclosure, the first (1-1) vibration device 510-1 and the second (1-2) vibration device 510-2 can be applied to be compatible with each other. For example, the second (1-2) vibration device 510-2 can be disposed at the rear surface of the first cover 400.

[0427] The first (1-1) vibration device 510-1 can be disposed at the rear surface of the first cover 400. For example, the first (1-1) vibration device 510-1 can be disposed at the first area A1 of the rear portion 410 of the first cover 400. For example, the first (1-1) vibration device 510-1 can vibrate the first area A1 of the first cover 400 based on the first (1-1) driving signal including a haptic feedback signal or / and a sound signal to vibrate the first portion P1 of the display member 200. Accordingly, the first (1-1) vibration device 510-1 can generate the first sound S1 of the first tonal sound band based on the vibration of the first portion P1 of the display member 200, or can generate the first haptic feedback (or first haptic vibration) in response to a touch (e.g., by a user). For example, the first (1-1) vibration device 510-1 can vibrate the first area A1 of the first cover 400 to directly vibrate the first portion P1 of the display member 200, and thus, can generate the first sound S1 of the first tonal sound band based on the vibration of the first portion P1 of the display member 200, or can generate the first haptic feedback (or first haptic vibration) in response to a touch.

[0428] According to an example embodiment of the present disclosure, the first (1-1) vibration device 510-1 can be a membrane type vibration device. For example, the first (1-1) vibration device 510-1 can be referred to as a flexible sound generator, a flexible actuator, a flexible speaker, a flexible piezoelectric speaker, a membrane actuator, a membrane type piezoelectric composite actuator, a membrane speaker, a membrane type piezoelectric speaker, or a membrane type piezoelectric composite speaker, etc., but the example embodiments of the present disclosure are not limited thereto.

[0429] Compared to the first vibration device 510 according to an exemplary embodiment of the present disclosure, where the (1-1) vibration device 510-1 is configured to cover the (1-1) hole 411-1 disposed at the rear portion 410 of the first cover 400, the (1-1) vibration device 510-1 of the first vibration device 510 according to another exemplary embodiment of the present disclosure may have the same configuration as the (1-1) vibration device 510-1 of the first vibration device 510 according to the exemplary embodiment of the present disclosure, except that the (1-1) vibration device 510-1 disposed at the rear portion 410 of the first cover 400. Therefore, redundant repetitive descriptions may be omitted or briefly provided below.

[0430] According to exemplary embodiments of this disclosure, such as Figure 15 and Figure 16 As shown, the (1-1) vibration device 510-1 may include a first plate 511 and a first vibration generator 513. The first plate 511 is disposed on the rear surface of the rear portion 410 of the first cover 400 via a (6-1) connecting member 515, and the first vibration generator 513 is disposed on the rear surface of the first plate 511 via a (7-1) connecting member 517. For example, the positions of the first plate 511 and the first vibration generator 513 may be changed. For example, the (1-1) vibration device 510-1 may include a first vibration generator 513 disposed on the rear surface of the rear portion 410 of the first cover 400 via a (6-1) connecting member 515 and a first plate 511 disposed on the rear surface of the first vibration generator 513 via a (7-1) connecting member 517.

[0431] The (1-2) vibration device 510-2 can be disposed at the rear portion 410 of the first cover 400. For example, the (1-2) vibration device 510-2 can be disposed on the rear surface of the rear portion 410 of the first cover 400 to cover the (3-1) hole 413-1 (or the (1-1) hole). For example, when a second member 510-3 according to an exemplary embodiment of the present disclosure is configured, the (1-2) vibration device 510-2 can be disposed on the rear surface of the second member 510-3. For example, the (1-2) vibration device 510-2 can be disposed on the rear surface of the second member 510-3 via the (9-1) connecting member 510-3c. For example, the (1-2) vibration device 510-2 can be a coil-type vibration device (or vibration generator), and can be a vibration device (or vibration generator) including a magnet, a spool, and a coil wound on the spool. For example, the (9-1) connecting member 510-3c may be disposed between the rear surface of the second member 510-3 and the (1-2) vibrating device 510-2.

[0432] The coil type vibration device according to an exemplary embodiment of the present disclosure can further include a frame (or plate), a center pole, and a damper. A magnet (or a permanent magnet) can be disposed at the frame so as to be accommodated in a hollow portion of the bobbin. A coil can be wound around an outer circumference of the bobbin. For example, the coil can be provided with a sound signal (or a voice signal) from an external source. The coil can be raised and lowered with a height of the bobbin. When the sound signal is applied to the coil, the bobbin can vibrate (e.g., perform a vertical reciprocating motion) according to Fleming's left-hand rule based on an applied electric field generated around the coil and an external magnetic field formed around the magnet. The center pole can be disposed on the magnet and can guide the vibration of the bobbin. For example, the center pole can be inserted (or accommodated) into the hollow portion of the bobbin and thus can be surrounded by the bobbin. For example, the center pole can be disposed on the magnet so as to be accommodated in the hollow portion of the bobbin. For example, the damper can be disposed between the frame and the bobbin. The damper can have a creased structure between one side and the other side thereof and can contract or relax based on the vibration of the bobbin. For example, the damper can limit a vibration distance (e.g., a vertical movement distance) of the bobbin with its restoring force. For example, in a case where the bobbin vibrates a certain distance or more or a certain distance or less, the bobbin can be restored to an original position by the restoring force of the damper. However, the configuration of the coil type vibration device is not limited thereto.

[0433] According to an exemplary embodiment of the present disclosure, the displacement amount of the (1-2)th vibration device 510-2 can increase in a low-pitch sound, and thus the third hole 413 can secure a vibration space between the vibration device 510 and the optical sheet member 237. For example, in order to reduce a height of a device based on the (1-2)th vibration device 510-2, the first members 610 and 630 can be configured to be implemented such that the bobbin of the (1-2)th vibration device 510-2 is exposed at the third hole 413 or inserted (or accommodated) into the third hole 413.

[0434] According to an exemplary embodiment of the present disclosure, the (1-2)th vibration device 510-2 can vibrate the first area A1 of the first cover 400 based on the (1-2)th driving signal including a haptic feedback signal or / and a sound signal. Thus, the (1-2)th vibration device 510-2 can vibrate the first area A1 of the display member 200 to vibrate the first portion P1 of the display member 200. Thus, the (1-2)th vibration device 510-2 can generate a first sound S1 of a first-pitch sound band based on the vibration of the first portion P1 of the display member 200, or can generate a first haptic feedback (or haptic vibration) in response to a touch (e.g., by a user).

[0435] The first (1-2) vibration device 510-2 according to the exemplary embodiment of the disclosure can vibrate the first area A1 of the first cover 400 in response to the first (1-2) driving signal, thereby generating a sound pressure level in an inner area (or a second gap space) of the first (3-1) hole 413-1. Accordingly, the first sound S1 of the first tonal band can be generated by vibrating the first portion P1 of the display member 200.

[0436] According to the exemplary embodiment of the disclosure, when the first (1-2) vibration device 510-2 vibrates based on the first (1-2) driving signal, a sound pressure level can be generated in the inner area of the first (3-1) hole 413-1 by the vibration of the first area A1 of the first cover 400 based on the vibration of the first (1-2) vibration device 510-2. A sound pressure level can be generated in the sound transmission space STS by the vibration of the backlight member 230 based on the sound pressure level. Based on the sound pressure level generated in the sound transmission space STS, the first sound S1 of the first tonal band generated by the vibration of the first portion P1 of the display panel 210 can be output in the forward direction FD of the display panel 210. Accordingly, a sound wave generated based on the vibration of the first (1-2) vibration device 510-2 can be directly transmitted (or propagated) to the display member 200 through the first (3-1) hole 413-1. Accordingly, the sound pressure level characteristic and / or the sound quality of the first sound S1 can be enhanced.

[0437] The second member 510-3 can be disposed between the rear portion 410 of the first cover 400 and the first vibration device 510. For example, the second member 510-3 can support the first (1-2) vibration device 510-2. For example, the second member 510-3 can be disposed at the rear surface of the rear portion 410 of the first cover 400 by the first (10-1) connecting member 510-3d. The first (10-1) connecting member 510-3d of the exemplary embodiment of the disclosure can be a fourteenth connecting member, and the first (10-2) connecting member 510-3d of the exemplary embodiment of the disclosure can be a fifteenth connecting member, but the exemplary embodiment of the disclosure is not limited to the numbering.

[0438] The second member 510-3 according to the exemplary embodiment of the disclosure can include a first (4-1) hole 510-3a and a first (4-2) hole 510-3b. The first (4-1) hole 510-3a of the exemplary embodiment of the disclosure can be a fifth hole, and the first (4-2) hole 510-3b of the exemplary embodiment of the disclosure can be a sixth hole, but the exemplary embodiment of the disclosure is not limited to the numbering.

[0439] The (4-1)th hole 510-3a according to the exemplary embodiment of the present disclosure can correspond to (or overlap) the (1-1)th vibration device 510-1. For example, the (4-1)th hole 510-3a can have the same shape as the (1-1)th vibration device 510-1, but the exemplary embodiment of the present disclosure is not limited thereto. For example, the size (or width) of the (4-1)th hole 510-3a can be the same as that of the (1-1)th vibration device 510-1, or can be greater than that of the (1-1)th vibration device 510-1. For example, the (4-1)th hole 510-3a can provide a displacement space of the (1-1)th vibration device 510-1, and thus the amount of displacement of the (1-1)th vibration device 510-1 can increase. For example, the (4-1)th hole 510-3a can be covered by the first plate 511 of the (1-1)th vibration device 510-1. For example, the vibration generator 513 of the (1-1)th vibration device 510-1 can be disposed at the first plate 511. For example, the vibration generator 513 of the (1-1)th vibration device 510-1 can be disposed at the rear surface of the first plate 511.

[0440] The (4-2)th hole 510-3b according to the exemplary embodiment of the present disclosure can correspond to (or overlap) the (3-1)th hole 413-1 of the first cover 400. For example, the (4-2)th hole 510-3b can correspond to (or overlap) the (1-2)th vibration device 510-2. For example, the (4-2)th hole 510-3b can have the same or similar shape as the (3-1)th hole 413-1 of the first cover 400, but the exemplary embodiment of the present disclosure is not limited thereto. For example, the size (or width) of the (4-2)th hole 510-3b can be the same as or different from that of the (3-1)th hole 413-1 of the first cover 400. For example, the size of the (4-2)th hole 510-3b can be smaller or greater than that of the (3-1)th hole 413-1.

[0441] According to the exemplary embodiment of the present disclosure, the (4-2)th hole 510-3b can be covered by the (1-2)th vibration device 510-2. For example, the (1-2)th vibration device 510-2 can be disposed at the rear surface of the second member 510-3 and can cover the (4-2)th hole 510-3b. For example, the (1-2)th vibration device 510-2 can output a second sound pressure level through the (4-2)th hole 510-3b. For example, the (1-2)th vibration device 510-2 can output a sound of a low-pitched sound band through the (4-2)th hole 510-3b, but the exemplary embodiment of the present disclosure is not limited thereto.

[0442] According to the example embodiment of the disclosure, the second member 510-3 can be accommodated (or received) into the first (1-1) member 610 and can support at least one or more of the first (1-1) vibration device 510-1 and the first (1-2) vibration device 510-2. For example, the second member 510-3 can be connected or coupled to at least a portion of the first (1-1) member 610. For example, the second member 510-3 can be referred to as a first support member, a first support frame, a first support panel, a first guide panel, or a first guide member, etc., but the example embodiment of the disclosure is not limited thereto.

[0443] According to the example embodiment of the disclosure, the portion of the second member 510-3 disposed between the first (4-1) hole 510-3a and the first (4-2) hole 510-3b can acoustically separate a space in which the first (1-1) vibration device 510-1 is disposed and a space in which the first (1-2) vibration device 510-2 is disposed. Accordingly, interference between a first sound pressure level (or sound wave) generated based on vibration of the first (1-1) vibration device 510-1 and a second sound pressure level (or sound wave) generated based on vibration of the first (1-2) vibration device 510-2 and different from the first sound pressure level can be prevented or reduced, thereby preventing or reducing a decrease in sound characteristics.

[0444] The first vibration device 510 according to the example embodiment of the disclosure can be disposed at a rear surface of the rear portion 410 of the first cover 400. For example, the second vibration device 530 can be disposed at the second area A2 of the first cover 400 and can vibrate the second area A2 of the first cover 400 in response to a second driving signal to vibrate the second portion P2 of the display member 200. Accordingly, the second vibration device 530 can generate a second sound S2 of a second tonal band based on vibration of the second portion P2 of the display member 200, or can generate a second haptic feedback (or a second haptic vibration) in response to a touch (e.g., by a user).

[0445] The second vibration device 530 can include a first (2-1) vibration device 530-1, a first (2-2) vibration device 530-2, and a third member 530-3, but the example embodiment of the disclosure is not limited thereto. For example, the first (2-1) vibration device 530-1 and the first (2-2) vibration device 530-2 can be disposed adjacent to each other. For example, the third member 530-3 can be a second guide member or a first member and can be commonly used. However, the example embodiment of the disclosure is not limited thereto.

[0446] The first (2-1) vibration device 530-1 can be disposed at the rear surface of the first cover 400. For example, the first (2-1) vibration device 530-1 can be disposed at the second area A2 of the rear portion 410 of the first cover 400. For example, the first (2-1) vibration device 530-1 can vibrate the second area A2 of the first cover 400 based on the first (2-1) driving signal including the tactile feedback signal or / and the sound signal to vibrate the second portion P2 of the display member 200. Accordingly, the first (2-1) vibration device 530-1 can generate the second sound S2 of the second tonal sound band based on the vibration of the second portion P2 of the display member 200, or can generate the second tactile feedback (or the second tactile vibration) in response to the touch. For example, the first (2-1) vibration device 530-1 can vibrate the second area A2 of the first cover 400 to directly vibrate the second portion P2 of the display member 200. Accordingly, the first (2-1) vibration device 530-1 can generate the second sound S2 of the second tonal sound band based on the vibration of the second portion P2 of the display member 200, or can generate the second tactile feedback (or the second tactile vibration) in response to the touch.

[0447] The first (2-1) vibration device 530-1 can be configured to be substantially the same as the first (1-1) vibration device 510-1.

[0448] According to an exemplary embodiment of the present disclosure, as Figure 15 and Figure 16 shown in FIGS. 10A and 10B, the first (2-1) vibration device 530-1 can include a second plate 531 disposed at the rear surface of the rear portion 410 of the first cover 400 by using the first (6-2) connecting member 535 and a second vibration generator 533 disposed at the rear surface of the second plate 511 by using the first (7-2) connecting member 537. For example, the positions of the second plate 531 and the second vibration generator 533 can be changed. For example, the first (2-1) vibration device 530-1 can include the second vibration generator 533 disposed at the rear surface of the rear portion 410 of the first cover 400 by using the first (6-2) connecting member 535 and the second plate 531 disposed at the rear surface of the second vibration generator 533 by using the first (7-2) connecting member 537.

[0449] The (2-2)th vibration device 530-2 can be disposed at the rear portion 410 of the first cover 400. For example, the (2-2)th vibration device 530-2 can be disposed at a rear surface of the rear portion 410 of the first cover 400 to cover the (3-2)th hole 413-2. For example, the third member 530-3 according to an exemplary embodiment of the present disclosure is configured such that the (2-2)th vibration device 530-2 can be disposed at a rear surface of the third member 530-3. For example, the (2-2)th vibration device 530-2 can be disposed at a rear surface of the third member 530-3 through the (9-2)th connecting member 530-3c. For example, the (2-2)th vibration device 530-2 can be a coil type vibration device (or vibration generator), and can be a vibration device (or vibration generator) including a magnet, a bobbin, and a coil wound around the bobbin. For example, the (9-2)th connecting member 530-3c can be disposed between the rear surface of the third member 530-3 and the (2-2)th vibration device 530-2. The (9-1)th connecting member 510-3c according to an exemplary embodiment of the present disclosure can be a twelfth connecting member, and the (9-2)th connecting member 510-3c according to an exemplary embodiment of the present disclosure can be a thirteenth connecting member, but exemplary embodiments of the present disclosure are not limited to the numbering.

[0450] According to an exemplary embodiment of the present disclosure, the (2-2)th vibration device 530-2 can vibrate the second area A2 of the first cover 400 based on the (2-2)th driving signal including a haptic feedback signal or / and a sound signal. Accordingly, the (2-2)th vibration device 530-2 can vibrate the first area A1 of the display member 200. Accordingly, the (2-2)th vibration device 530-2 can generate the second sound S2 of the second tonal sound band based on the vibration of the second portion P2 of the display member 200, or can generate the second haptic feedback (or haptic vibration) in response to a touch (e.g., by a user). For example, the (2-2)th vibration device 530-2 can directly vibrate the first portion P1 of the display member 200. Accordingly, the (2-2)th vibration device 530-2 can generate the second sound S2 of the second tonal sound band based on the vibration of the second portion P2 of the display member 200, or can generate the second haptic feedback (or haptic vibration) in response to a touch.

[0451] The (2-2)th vibration device 530-2 according to an exemplary embodiment of the present disclosure can vibrate the second area A2 of the first cover 400 in response to the (2-2)th driving signal, thereby generating a sound pressure level in an inner area (or a second gap space) of the (3-2)th hole 413-2. Accordingly, the second sound S2 of the second tonal sound band can be generated by vibrating the second portion P2 of the display member 200.

[0452] According to the exemplary embodiment of the disclosure, when the (2-2)th vibration device 530-2 vibrates based on the (2-2)th driving signal, a sound pressure level can be generated in an inner region of the (3-2)th hole 413-2 by vibration of the second region A2 of the first cover 400 based on vibration of the (2-2)th vibration device 530-2. A sound pressure level can be generated in the sound transmission space STS by vibration of the backlight part 230 based on the sound pressure level. Based on the sound pressure level generated in the sound transmission space STS, a second sound S2 of a second tonal band generated by vibration of the second portion P2 of the display panel 210 can be output in the forward direction FD of the display panel 210. Accordingly, a sound wave generated based on vibration of the (2-2)th vibration device 530-2 can be directly transmitted (or propagated) to the display member 200 through the (3-2)th hole 413-2. Accordingly, a sound pressure level characteristic and / or a sound quality of the second sound S2 can be enhanced.

[0453] A third member 530-3 can be disposed between the rear portion 410 of the first cover 400 and the second vibration device 530. For example, the third member 530-3 can support the (2-2)th vibration device 530-2. For example, the third member 530-3 can be disposed at a rear surface of the rear portion 410 of the first cover 400 by a (10-2)th connecting member 530-3d.

[0454] The third member 530-3 according to the exemplary embodiment of the disclosure can include a (5-1)th hole 530-3a and a (5-2)th hole 530-3b. The (5-1)th hole 530-3a of the embodiment of the disclosure can be a seventh hole, and the (5-2)th hole 530-3b of the embodiment of the disclosure can be an eighth hole, but the embodiment of the disclosure is not limited to the numbering.

[0455] The (5-1)th hole 530-3a according to the exemplary embodiment of the disclosure can correspond to (or overlap) the (2-1)th vibration device 530-1. For example, the (5-1)th hole 530-3a can have the same shape as the (2-1)th vibration device 530-1, but the exemplary embodiment of the disclosure is not limited thereto. For example, the (5-1)th hole 530-3a can have the same size as the (2-1)th vibration device 530-1, or can be larger than the (2-1)th vibration device 530-1. For example, the (5-1)th hole 530-3a can provide a displacement space of the (2-1)th vibration device 530-1, and thus the amount of displacement of the (2-1)th vibration device 530-1 can increase. For example, the (5-1)th hole 530-3a can be covered by the second plate 531 of the (2-1)th vibration device 530-1. For example, the vibration generator 533 of the (2-1)th vibration device 530-1 can be disposed at the second plate 531. For example, the vibration generator 533 of the (2-1)th vibration device 530-1 can be disposed at the rear surface of the second plate 531.

[0456] The (5-2)th hole 530-3b according to the exemplary embodiment of the disclosure can correspond to (or overlap) the (3-2)th hole 413-2 of the first cover 400. For example, the (5-2)th hole 530-3b can correspond to (or overlap) the (2-2)th vibration device 530-2. For example, the (5-2)th hole 530-3b can have the same shape as the (3-2)th hole 413-2 of the first cover 400, but the exemplary embodiment of the disclosure is not limited thereto. For example, the (5-2)th hole 530-3b can have the same size as or a different size from the (3-2)th hole 413-2 of the first cover 400. For example, the (5-2)th hole 530-3b can have a size smaller than or larger than the (3-2)th hole 413-2.

[0457] According to the exemplary embodiment of the disclosure, the (5-2)th hole 530-3b can be covered by the (2-2)th vibration device 530-2. For example, the (2-2)th vibration device 530-2 can be disposed at the rear surface of the third member 530-3 and can cover the (5-2)th hole 530-3b. For example, the (2-2)th vibration device 530-2 can output a second sound pressure level through the (5-2)th hole 530-3b. For example, the (2-2)th vibration device 530-2 can output a sound of a low-pitched sound band through the (5-2)th hole 530-3b, but the exemplary embodiment of the disclosure is not limited thereto.

[0458] According to an example embodiment of the disclosure, the third member 530-3 can be accommodated (or received) into the first (1-2) member 630 and can support one or more of the second (2-1) vibration device 530-1 and the second (2-2) vibration device 530-2. For example, the third member 530-3 can be connected or coupled to at least a portion of the first (1-2) member 630. For example, the third member 530-3 can be referred to as a second support member, a second support frame, a second support panel, a second guide panel, or a second guide member, but example embodiments of the disclosure are not limited thereto.

[0459] According to an example embodiment of the disclosure, the portion 530-3e of the third member 530-3 disposed between the second (5-1) hole 530-3a and the second (5-2) hole 530-3b can acoustically separate a space in which the second (2-1) vibration device 530-1 is disposed and a space in which the second (2-2) vibration device 530-2 is disposed. Accordingly, interference between a sound pressure level (or a sound wave) generated based on vibration of the second (2-1) vibration device 530-1 and a sound pressure level (or a sound wave) generated based on vibration of the second (2-2) vibration device 530-2 can be prevented or reduced, thereby preventing or reducing a decrease in sound quality or characteristics.

[0460] The first member 600 according to another example embodiment of the disclosure can be implemented by modifying the first member 600 according to an example embodiment of the disclosure. Except that the first member 600 according to another example embodiment of the disclosure includes the through hole 670, the first member 600 according to another example embodiment of the disclosure can be the same as or similar to the first member 600 according to the above-described example embodiment of the disclosure. Accordingly, the following can omit or briefly provide redundant descriptions.

[0461] The first member 600 according to another example embodiment of the disclosure can be disposed at a rear surface of the first cover 400. For example, the first member 600 can overlap each of the second (4-1) hole 510-3a and the second (4-2) hole 510-3b, and can overlap each of the second (5-1) hole 530-3a and the second (5-2) hole 530-3b. The first member 600 according to another example embodiment of the disclosure can include the first (1-1) member 610 and the first (1-2) member 630.

[0462] The (1-1)th member 610 can cover all of the first vibration devices 510. For example, the (1-1)th member 610 can cover the (1-1)th vibration device 510-1 and the (1-2)th vibration device 510-2. For example, the (1-1)th member 610 can be disposed at the first area A1 of the rear portion 410 of the first cover 400 by the (8-1)th connecting member 651. For example, the (1-1)th member 610 can cover the (3-1)th hole 413-1 disposed at the rear portion 410 of the first cover 400. The (8-1)th connecting member 651 of the disclosure embodiment can be a tenth connecting member, and the (8-2)th connecting member 653 of the disclosure embodiment can be an eleventh connecting member, but the disclosure embodiment is not limited to the numbering.

[0463] The (1-1)th member 610 according to another example embodiment of the disclosure can include a bottom portion 611, a lateral portion 613, and a first through hole (or first hole) 671.

[0464] According to the disclosure example embodiment, the bottom portion 611 can be disposed at a rear surface of the first vibration device 510. For example, the bottom portion 611 can overlap each of the (4-1)th hole 510-3a and the (4-2)th hole 510-3b. For example, the bottom portion 611 can cover the rear surface of the first vibration device 510. For example, the bottom portion 611 can be disposed on a rear surface of the (1-1)th vibration device 510-1 and a rear surface of the (1-2)th vibration device 510-2. For example, the bottom portion 611 can cover the rear surface of the (1-1)th vibration device 510-1 and the rear surface of the (1-2)th vibration device 510-2.

[0465] According to the disclosure example embodiment, the lateral portion 613 can be disposed at a lateral surface of the first vibration device 510 and can cover the lateral surface of the first vibration device 510. For example, the lateral portion 613 can be connected to one side (or end) of the bottom portion 611. For example, the lateral portion 613 can be disposed along a periphery of the bottom portion 611. For example, one side (or one end) of the lateral portion 613 can be disposed at a rear surface of the rear portion 410 of the first cover 400 by the (8-1)th connecting member 651.

[0466] According to another exemplary embodiment of the disclosure, the first through-hole 671 can be provided at the bottom portion 611. For example, the first through-hole 671 can correspond to (or overlap) the (1-2)th vibration device 510-2. For example, the first through-hole 671 can provide a displacement space of the (1-2)th vibration device 510-2, and thus, a displacement amount of the (1-2)th vibration device 510-2 can be increased. The first through-hole 671 can be a path through which a portion of the (1-2)th vibration device 510-2 can pass. For example, a central portion of the (1-2)th vibration device 510-2 can be exposed to or protrude to the outside of the (1-1) member 610 through the first through-hole 671. According to another exemplary embodiment of the disclosure, the first through-hole 671 can correspond to (or overlap) the (1-1)th vibration device 510-1. For example, the first through-hole 671 can be a path through which a portion of the (1-1)th vibration device 510-1 can pass. For example, a central portion of the (1-1)th vibration device 510-1 can be exposed to or protrude to the outside of the (1-1) member 610 through the first through-hole 671.

[0467] The (1-2) member 630 can cover all of the second vibration devices 530. For example, the (1-2) member 630 can cover the (2-1)th vibration device 530-1 and the (2-2)th vibration device 530-2. For example, the (1-2) member 630 can be disposed at the second area A2 of the rear portion 410 of the first cover 400 by the (8-2) connecting member 653. For example, the (1-2) member 630 can cover the (3-2) hole 413-2 disposed at the rear portion 410 of the first cover 400.

[0468] The (1-2) member 630 according to another exemplary embodiment of the disclosure can include a bottom portion 631, a lateral portion 633, and a second through-hole (or second hole) 673.

[0469] According to an exemplary embodiment of the disclosure, the bottom portion 631 can be disposed at a rear surface of the second vibration device 530. For example, the bottom portion 631 can overlap each of the (5-1) hole 530-3a and the (5-2) hole 530-3b. For example, the bottom portion 631 can cover a rear surface of the first vibration device 530. For example, the bottom portion 611 can be disposed at a rear surface of the (2-1)th vibration device 530-1 and a rear surface of the (2-2)th vibration device 530-2. For example, the bottom portion 611 can cover the rear surface of the (2-1)th vibration device 530-1 and the rear surface of the (2-2)th vibration device 530-2.

[0470] According to an example embodiment of the disclosure, the lateral portion 613 can be provided at a lateral surface of the second vibration device 530 and can cover the lateral surface of the second vibration device 530. For example, the lateral portion 613 can be connected to one side (or end) of the bottom portion 611. For example, the lateral portion 613 can be provided along a periphery of the bottom portion 611. For example, one side (or end) of the lateral portion 613 can be provided at a rear surface of the rear portion 410 of the first cover 400 by the (8-2) connecting member 653.

[0471] According to another example embodiment of the disclosure, the second through-hole 673 can be provided at the bottom portion 611. For example, the second through-hole 673 can correspond to (or overlap) the (2-2) vibration device 530-2. For example, the second through-hole 673 can provide a displacement space of the (1-2) vibration device 510-2, and thus, can increase the amount of displacement of the (1-2) vibration device 510-2. For example, the first through-hole 671 can be a path through which a portion of the (2-2) vibration device 530-2 can pass. For example, a central portion of the (2-2) vibration device 530-2 can be exposed outside the (1-2) member 630 or protrude outside the (1-1) member 610 through the second through-hole 673. According to another example embodiment of the disclosure, the second through-hole 673 can correspond to (or overlap) the (2-1) vibration device 530-1. For example, the second through-hole 673 can be a path through which a portion of the (2-1) vibration device 530-1 can pass. For example, a central portion of the (2-1) vibration device 530-1 can be exposed outside the (1-2) member 630 or protrude outside the (1-1) member 610 through the second through-hole 673.

[0472] According to Figures 14-16 According to an example embodiment of the disclosure shown in FIG. 8, the (1-1) vibration device 510-1, the (1-2) vibration device 510-2, the second member 510-3, and the (1-1) member 610 can constitute a first vibration generation device. The (2-1) vibration device 530-1, the (2-2) vibration device 530-2, the third member 530-3, and the (1-2) member 630 can constitute a second vibration generation device. The (3-1) hole can be the (1-1) hole, and the (3-2) hole can be the (1-2) hole.

[0473] According to an example embodiment of the disclosure, a vibration generating device corresponding to the first vibration generating device or / and the second vibration generating device can be connected to a vibration object (or a vibration member) to vibrate the vibration object (or the vibration member) to thereby output sound. For example, the vibration object can include a vibration plate, and the vibration plate can include a metal material or can include one or more pieces or layers of a non-metal or a composite non-metal material among wood, plastic, glass, cloth, fiber, paper, rubber, and leather. For example, the vibration object can include a display panel including a plurality of pixels configured to display an image, or can include a non-display panel among a light emitting diode lighting panel, an organic light emitting lighting panel, or an inorganic light emitting lighting panel. For example, the vibration object can include one or more among a display panel including a plurality of pixels configured to display an image, a screen panel projecting an image from a display device, a lighting panel, a signboard panel, a vehicle exterior material, a building ceiling material, a building interior material, a building glass window, an aircraft interior material, an aircraft glass window, metal, wood, rubber, plastic, glass, fiber, cloth, paper, leather, and a mirror.

[0474] According to an example embodiment of the disclosure, because the first member 600 is provided, the air impedance of the corresponding vibration device 500 can be controlled, thereby providing a device that enables the extension of a tonal sound band. Further, the device according to an example embodiment of the disclosure can include a film type vibration device. A device having enhanced sound pressure level characteristics and / or sound characteristics including a high tonal sound band can be provided. In addition, the thickness of the device can be reduced, thereby providing a device having a compact structure.

[0475] Figure 17 An example of a vibration generator is shown Figure 14 An example of a vibration generator is shown

[0476] Referring to Figure 17 The first vibration generator 513 of the device according to another example embodiment of the disclosure can include a vibration portion (or a vibration layer) PE, a first electrode layer E1, and a second electrode layer E2. For example, the vibration portion PE can be a piezoelectric device.

[0477] According to an example embodiment of the disclosure, the first vibration generator 513 can be disposed on the plate 511. According to another example embodiment of the disclosure, the first vibration generator 513 can be attached at the plate 511 including a metal material.

[0478] The vibration portion PE can include a piezoelectric material having a piezoelectric effect. For example, the piezoelectric material can have a characteristic in which, in the case where a pressure or a twist is applied to a crystal structure by an external force, a potential difference occurs due to dielectric polarization caused by a change in 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 portion PE can be a vibration layer, a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a piezoelectric vibration portion, a piezoelectric material portion, an electroactive portion, a piezoelectric structure, an inorganic material layer, or an inorganic material portion, etc., but the exemplary embodiments of the present disclosure are not limited thereto.

[0479] The vibration portion PE can be formed of a transparent, semi-transparent, or opaque piezoelectric material, and can be transparent, semi-transparent, or opaque. The vibration portion PE can include a ceramic-based material configured to generate a relatively high vibration, or can include a piezoelectric ceramic having a perovskite-based crystal structure. The peroviskite crystal structure can have a piezoelectric effect and a converse piezoelectric effect, and can be a plate-like structure having a direction. The peroviskite crystal structure can be represented by a chemical formula "ABO3". In the chemical formula, "A" can include a divalent metal element, and "B" can include a tetravalent metal element. For example, 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 lead (II) titanate (PbTiO3), lead zirconate (PbZrO3), lead zirconate titanate (PbZrTiO3), barium titanate (BaTiO3), and strontium titanate (SrTiO3), but the exemplary embodiments of the present disclosure are not limited thereto.

[0480] The vibration portion PE according to an exemplary embodiment of the present disclosure can include one or more materials among lead (Pb), zirconium (Zr), titanium (Ti), zinc (Zn), nickel (Ni), niobium (Nb), magnesium (Mg), manganese (Mn), and indium (In), but exemplary embodiments of the present disclosure are not limited thereto. The vibration portion PE according to another exemplary embodiment of the present disclosure can include a zirconium titanate lead (PZT)-based material including lead (Pb), zirconium (Zr), and titanium (Ti), or a zirconium niobate lead nickel (PZNN)-based material including lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but exemplary embodiments of the present disclosure are not limited thereto. According to another exemplary embodiment of the present disclosure, the vibration portion PE can include a lead magnesium niobate (PMN)-based material, a lead nickel niobate (PNN)-based material, a lead zirconate niobate (PZN)-based material, or a lead indium niobate (PIN)-based material, but exemplary embodiments of the present disclosure are not limited thereto. The PMN-based material can include Pb, Mg, and Nb, and for example, can include Pb(Mg,Nb)O3. The PNN-based material can include Pb, Ni, and Nb, and for example, can include Pb(Ni,Nb)O3. The PIN-based material can include Pb, In, and Nb, and for example, can include Pb(In,Nb)O3. According to another exemplary embodiment of the present disclosure, the vibration portion PE can include at least one or more of CaTiO3, BaTiO3, SrTiO3, which do not include Pb, but exemplary embodiments of the present disclosure are not limited thereto.

[0481] The vibration portion PE according to an exemplary embodiment of the present disclosure is not limited to Figure 17 The vibration portion PE according to an exemplary embodiment of the present disclosure is not limited to

[0482] The first electrode layer E1 can be disposed at a first surface (or an upper surface) of the vibration portion PE and can be electrically connected to the first surface of the vibration portion PE. For example, the first electrode layer E1 can have a single electrode shape (or a common electrode shape) disposed at the entire first surface of the vibration portion PE. The first electrode layer E1 according to an exemplary embodiment of the present disclosure can include a transparent conductive material, a semi-transparent (semi-translucent) conductive material, or an opaque conductive material. For example, examples of the transparent conductive material or the semi-transparent conductive material can include indium tin oxide (ITO) or indium zinc oxide (IZO), but exemplary embodiments of the present disclosure are not limited thereto. The opaque conductive material can include aluminum (Al), copper (Cu), gold (Au), silver (Ag), molybdenum (Mo), magnesium Mg, or the like, or any alloy thereof, but exemplary embodiments of the present disclosure are not limited thereto.

[0483] The second electrode layer E2 may be located on a second surface (or rear surface) opposite to the first surface of the vibrating portion PE, and may be electrically connected to the second surface of the vibrating portion PE. For example, the second electrode layer E2 may have a single electrode shape (or a common electrode shape) disposed across the entire second surface of the vibrating portion PE. According to exemplary embodiments of this disclosure, the second electrode layer E2 may include a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material. For example, the second electrode layer E2 may include the same material as the first electrode layer E1, but exemplary embodiments of this disclosure are not limited thereto. As another exemplary embodiment of this disclosure, the second electrode layer E2 may include a material different from the first electrode layer E1.

[0484] The vibrating portion PE can be polarized (or polarized) in a gas at a specific temperature or in a gas at a temperature that can be changed from high temperature to room temperature by applying a specific voltage to the first electrode layer E1 and the second electrode layer E2, but the embodiments disclosed herein are not limited thereto. For example, the vibrating portion PE can alternately and repeatedly contract and expand based on the inverse piezoelectric effect according to a driving signal (or sound signal or voice signal) applied to the first electrode layer E1 and the second electrode layer E2 from an external source. Thus, displacement or vibration (or driving) can be performed.

[0485] Figure 18 It is relative to Figure 14 The connection structure of the device shown follows Figure 1 Another cross-sectional view taken by line I-I' shown. Figure 19 yes Figure 18 An enlarged view of region "E" shown in the image.

[0486] Figure 18 and Figure 19 The device shown in another exemplary embodiment of this disclosure can be used in Figures 14-16 The device shown in the exemplary embodiment of this disclosure is implemented by adding a connecting member. The following description will focus more on the modifications and related elements, and may give brief or omit redundant descriptions of the same or similar elements.

[0487] Reference Figure 18 and Figure 19According to another exemplary embodiment of the present disclosure, a first (1-1) vibration device 510-1 can include a first plate 511 and a vibration generator 513. For example, the vibration generator (or a first vibration generator) 513 of the first (1-1) vibration device 510-1 can be disposed at a rear surface of the first plate 511 by a first (7-1) connecting member 517. According to another exemplary embodiment of the present disclosure, a second (2-1) vibration device 530-1 can include a second plate 531 and a vibration generator 533. For example, the vibration generator (or a second vibration generator) 533 of the second (2-1) vibration device 530-1 can be disposed at a rear surface of the second plate 531 by a second (7-2) connecting member 537.

[0488] According to another exemplary embodiment of the present disclosure, the device can further include eleventh connecting members 519 and 539. For example, according to another exemplary embodiment of the present disclosure, the device can include a first (11-1) connecting member 519 and a second (11-2) connecting member 539. The first (11-1) connecting member 519 of the present disclosure embodiment can be a sixteenth connecting member, and the second (11-2) connecting member 539 of the present disclosure embodiment can be a seventeenth connecting member, but the present disclosure embodiment is not limited to the numbering.

[0489] The first (11-1) connecting member 519 can be disposed between the second member 510-3 and the first plate 511. Accordingly, the first plate 511 can be disposed at the second member 510-3 by the first (11-1) connecting member 519. For example, the first (11-1) connecting member 519 can be disposed at one side (or edge or periphery) of the second member 510-3. For example, the first (11-1) connecting member 519 can overlap one side (or edge or periphery) of the second member 510-3. For example, the first (11-1) connecting member 519 can be disposed at one side (or edge or periphery) of the first plate 511. For example, the first (11-1) connecting member 519 can overlap one side (or edge or periphery) of the first plate 511. For example, the first (11-1) connecting member 519 can be disposed between one side (or edge or periphery) of the second member 510-3 and one side (or edge or periphery) of the first plate 511. For example, the first (11-1) connecting member 519 can overlap the first member 600. For example, the first (11-1) connecting member 519 can overlap the first (1-1) member 610. For example, the first (11-1) connecting member 519 can overlap the bottom portion 611 of the first (1-1) member 610. For example, the first (11-1) connecting member 519 can overlap the first (4-1) hole 510-3a, but the present disclosure exemplary embodiment is not limited thereto. For example, the first (11-1) connecting member 519 can not overlap the first (4-1) hole 510-3a.

[0490] The (11-2)th connecting member 539 can be disposed between the third member 530-3 and the second plate 531. Accordingly, the second plate 531 can be disposed at the third member 530-3 by the (11-2)th connecting member 539. For example, the (11-2)th connecting member 539 can be disposed at one side (or edge or periphery) of the third member 530-3. For example, the (11-2)th connecting member 539 can overlap one side (or edge or periphery) of the third member 530-3. For example, the (11-2)th connecting member 539 can be disposed at one side (or edge or periphery) of the second plate 531. For example, the (11-2)th connecting member 539 can overlap one side (or edge or periphery) of the second plate 531. For example, the (11-2)th connecting member 539 can be disposed between one side (or edge or periphery) of the third member 530-3 and one side (or edge or periphery) of the second plate 531. For example, the (11-2)th connecting member 539 can overlap the first member 600. For example, the (11-2)th connecting member 539 can overlap the (1-2)th member 630. For example, the (11-2)th connecting member 539 can overlap the bottom portion 631 of the (1-2)th member 630. For example, the (11-2)th connecting member 539 can overlap the (5-1)th hole 530-3a, but the exemplary embodiments of the present disclosure are not limited thereto. For example, the (11-2)th connecting member 539 can not overlap the (5-1)th hole 530-3a.

[0491] The device according to another exemplary embodiment of the present disclosure can further include a third air gap AG3.

[0492] The third air gap AG3 can be disposed between the first cover 400 and each of the first (1-1) vibration device 510-1 and the second (2-1) vibration device 530-1. For example, the third air gap AG3 can be disposed between the rear portion 410 of the first cover 400 and each of the first (1-1) vibration device 510-1 and the second (2-1) vibration device 530-1. For example, the third air gap AG3 can be disposed between the rear portion 410 of the first cover 400 and each of the first vibration generator 513 and the second vibration generator 533. The third air gap AG3 can transmit sound generated by the first (1-1) vibration device 510-1 to the front surface of the device and can secure a vibration space of the first (1-1) vibration device 510-1. Also, the third air gap AG3 can transmit sound generated by the second (2-1) vibration device 530-1 to the front surface of the device and can secure a vibration space of the second (2-1) vibration device 530-1. The third air gap AG3 according to the embodiment of the disclosure can include a first (3-1) air gap AG3a and a second (3-2) air gap AG3b. The first (3-1) air gap AG3a according to the embodiment of the disclosure can be a third air gap, and the second (3-2) air gap AG3b according to the embodiment of the disclosure can be a fourth air gap, but the embodiment of the disclosure is not limited to the numbering.

[0493] The first (3-1) air gap AG3a can be disposed between the first (1-1) vibration device 510-1 and the first cover 400. For example, the first (3-1) air gap AG3a can be disposed between the first (1-1) vibration device 510-1 and the rear portion 410 of the first cover 400. For example, the first (3-1) air gap AG3a can be disposed between the rear portion 410 of the first cover 400 and the first vibration generator 513. For example, the first (3-1) air gap AG3a can transmit sound generated by the first vibration generator 513 to the front surface of the device and can secure a vibration space of the first vibration generator 513.

[0494] The second (3-2) air gap AG3b can be disposed between the second (2-1) vibration device 530-1 and the first cover 400. For example, the second (3-2) air gap AG3b can be disposed between the second (2-1) vibration device 530-1 and the rear portion 410 of the first cover 400. For example, the second (3-2) air gap AG3b can be disposed between the rear portion 410 of the first cover 400 and the second vibration generator 533. For example, the second (3-2) air gap AG3b can transmit sound generated by the second vibration generator 533 to the front surface of the device and can secure a vibration space of the second (2-1) vibration device (the second (2-1) vibration generator) 530-1.

[0495] According to an exemplary embodiment of the present disclosure, a third air gap AG3 can be provided between the first cover 400 and the vibration device 500, thereby providing a device having more enhanced sound pressure level characteristics and / or sound characteristics. According to an exemplary embodiment of the present disclosure, because the first member 600 is provided, air impedance of the corresponding vibration device 500 can be controlled, thereby providing a device enabling extension of a high-pitched sound band. Further, the device according to an exemplary embodiment of the present disclosure can include a film-type vibration device. A device having enhanced sound pressure level characteristics and / or sound characteristics including a high-pitched sound band can be provided. Further, a thickness of the device can be reduced, thereby providing a device having a compact structure.

[0496] Figure 20 is a graph showing sound pressure level characteristics of a device according to an exemplary embodiment of the present disclosure. Figure 21 is a graph showing another sound pressure level characteristics of a device according to an exemplary embodiment of the present disclosure.

[0497] In Figure 20 and Figure 21 , the horizontal axis represents frequency (Hz), and the vertical axis represents sound pressure level (dB). In Figure 20 , a dotted line represents sound pressure level characteristics measured in a device not including a member, and a solid line represents sound pressure level characteristics measured in a device including a member. In Figure 21 , a dotted line represents sound pressure level characteristics measured in a device including a member and not including a second cover, and a solid line represents sound pressure level characteristics measured in a device including a member and a second cover.

[0498] Referring to Figure 20 , it can be seen that a sound pressure level of a low frequency band (about 300 Hz or less) measured in a case where the first member 600 is included (solid line) is higher than a sound pressure level measured in a case where the first member 600 is not included (dotted line). Thus, as in an exemplary embodiment of the present disclosure, the first member 600 can be provided in a device. Thus, sound pressure level characteristics and sound characteristics of a low-pitched sound band can be enhanced.

[0499] Referring to Figure 21 , in an overall region of a measured frequency range, it can be seen that sound pressure level characteristics measured in a case where the first member 600 and the second cover 700 are included (solid line) are similar to sound pressure level characteristics measured in a case where the first member 600 is included and the second cover 700 is not included (dotted line). Thus, as in an exemplary embodiment of the present disclosure, the first member 600 can be provided in a device. Thus, a sound having uniform sound pressure level can be produced regardless of whether the second cover 700 is incorporated.

[0500] Figure 22 a rear surface of an exemplary device according to another exemplary embodiment of the present disclosure is illustrated.Figure 23 is Figure 22 an exploded perspective view of the device shown in FIG. 1.

[0501] Figure 22 and Figure 23 The device according to another exemplary embodiment of the disclosure shown in FIG. 2 can be implemented by modifying one or more members 600 and adding a rear vibration member 800 in the exemplary device described above with reference to FIG. 1. The description of the first member 600 and the rear vibration member 800 applicable to FIG. 1 can be identically applied to FIG. 2. The following description can focus more on the modified and related elements, and the repeated description of the same or similar elements can be given briefly or can be omitted. Figures 14-19 Figure 22 Figure 23 Figures 1-13 The description of the first member 600 and the rear vibration member 800 applicable to FIG. 1 can be identically applied to FIG. 2. The following description can focus more on the modified and related elements, and the repeated description of the same or similar elements can be given briefly or can be omitted.

[0502] With reference to Figure 14 and Figure 15 (or Figure 18 and Figure 19 ), Figure 22 and Figure 23 , the device according to another exemplary embodiment of the disclosure can further include one or more rear vibration members 800. For example, the rear vibration member 800 can be disposed at a rear surface of the first member 600. The first member 600 (e.g., the (1-1) member 610 or the (1-2) member 630) can include a receiving portion 690 to which the rear vibration member 800 can be disposed. For example, the receiving portion 690 can be implemented to have a shape in which a portion of the first member 600 protrudes from the first member 600 toward the first cover 400 or protrudes in the opposite direction away from the first cover 400. For example, the portion protruding from the first member 600 (the (1-1) member 610) can be implemented at a bottom portion (e.g., 611) or a lateral portion (e.g., 613) of the (1-1) member 610 of the first member 600. For example, the receiving portion 690 can be a groove formed at a portion of the front surface of the first member 600, or can be a groove formed at a portion of the rear surface of the first member 600. For example, the portion in which the groove can be formed can be located at a bottom portion (611) or a lateral portion (e.g., 613) of the member (e.g., the (1-1) member 610). For example, the receiving portion 690 can include a hole or a slit. For example, the receiving portion 690 can have a shape corresponding to a shape of the rear vibration member 800. For example, the receiving portion 690 can include a hole or a slit overlapping the rear vibration member 800.

[0503] ​​​The (1-1)th member 610 can be disposed in the first area A1 of the rear portion 410 of the first cover 400, and can include one or more first accommodation portions 691. The number and shape of the first accommodation portions 691 can be determined or adjusted based on sound characteristics or haptic feedback characteristics to be implemented.

[0504] According to an example embodiment of the disclosure, the first cover 400 can include a first peripheral area EA1 and a second peripheral area EA2 with respect to a first center line CL1 in the first direction X (or the width direction). For example, the first member 600 can be disposed at one or more areas of the first peripheral area EA1 and the second peripheral area EA2 of the first cover 400. For example, the (1-1)th member 610 can be disposed at the first area A1 of the rear portion 410 of the first cover 400. For example, the (1-1)th member 610 can be formed in the first area A1 of the rear portion 410 of the first cover 400 in the second direction Y (or the length direction) of the rear portion 410 of the first cover 400.

[0505] According to an example embodiment of the disclosure, the first cover 400 can include a first area UA and a second area LA with respect to a second center line CL2 in the second direction Y (or the length direction). For example, one or more first members 600 can be disposed over the first area UA and the second area LA of the first cover 400.

[0506] For example, the (1-1)th member 610 can be disposed over the first area UA and the second area LA of the first cover 400 with respect to the second center line (or the length center line) CL2 in the second direction Y (or the length direction) of the first cover 400.

[0507] According to an example embodiment of the disclosure, the first member 600 can include a first portion (e.g., UA1 and UA2) and a second portion (e.g., LA1 and LA2). For example, the first portions UA1 and UA2 can correspond to or be disposed at the first area UA of the first cover 400. For example, the second portions LA1 and LA2 can correspond to or be disposed at the second area LA of the first cover 400.

[0508] For example, the (1-1)th member 610 can include a first portion UA1 disposed at or overlapping the first area UA of the first cover 400, and a second portion LA1 disposed at or overlapping the second area LA of the first cover 400. For example, the first area UA can be an upper area, but the embodiments of the disclosure are not limited thereto. For example, the second area LA can be a lower area, but the embodiments of the disclosure are not limited thereto. For example, the first portion UA1 can be in the upper area, but the embodiments of the disclosure are not limited thereto. For example, the second portion LA1 can be in the lower area, but the embodiments of the disclosure are not limited thereto.

[0509] For example, the first vibration device 510 can be disposed at the first portion UA1 or UA2 or the second portion LA1 or LA2 of the first member 600. For example, the first vibration device 510 can be disposed between the first area UA of the first peripheral area EA1 of the first cover 400 and the first portion UA1 of the (1-1)th member 610. In this case, the first accommodation portion 691 can be disposed at the second portion LA1 of the (1-1)th member 610. For example, the first vibration device 510 can be disposed at the first portion UA1 of the (1-1)th member 610, and the first accommodation portion 691 can be disposed at the second portion LA1 of the (1-1)th member 610. The first portion UA1 of the (1-1)th member 610 can correspond to or be disposed at the first area UA of the first peripheral area EA1 of the first cover 400. The second portion LA1 of the (1-1)th member 610 can correspond to or be disposed at the second area LA of the first peripheral area EA1 of the first cover 400.

[0510] For example, the first vibration device 510 can be disposed between the second area LA of the first peripheral area EA1 of the first cover 400 and the second portion LA1 of the (1-1)th member 610. In this case, the first accommodation portion 691 can be disposed at the first portion UA1 of the (1-1)th member 610. For example, the first vibration device 510 can be disposed at the second portion LA1 of the (1-1)th member 610, and the first accommodation portion 691 can be disposed at the first portion UA1 of the (1-1)th member 610.

[0511] The (1-2)th member 630 can be disposed in the second area A2 of the rear portion 410 of the first cover 400, and can include one or more second accommodation portions 693. The number and shape of the second accommodation portions 693 can be determined or adjusted based on sound characteristics or haptic feedback characteristics to be implemented.

[0512] For example, the first (1-2) member 630 can be disposed at the second peripheral area EA2 of the rear portion 410 of the first cover 400. For example, the first (1-2) member 630 can be formed in the second direction Y (or the length direction) of the rear portion 410 of the first cover 400 in the second peripheral area EA2 of the rear portion 410 of the first cover 400. For example, the first (1-2) member 630 can be disposed above the first area UA and the second area LA of the first cover 400 with respect to the second center line (or the length center line) CL2 in the second direction Y (or the length direction) of the first cover 400. For example, the first (1-2) member 630 can include a first portion UA1 disposed at or overlapping the first area UA of the first cover 400, and a second portion LA1 disposed at or overlapping the second area LA of the first cover 400. For example, the first area UA can be an upper area, but the disclosure embodiments are not limited thereto. For example, the second area LA can be a lower area, but the disclosure embodiments are not limited thereto. For example, the first portion UA2 can be in the upper area, but the disclosure embodiments are not limited thereto. For example, the second portion LA2 can be in the lower area, but the disclosure embodiments are not limited thereto.

[0513] For example, the second vibration device 530 can be disposed between the first area UA of the second peripheral area EA2 of the first cover 400 and the first portion UA2 of the first (1-2) member 630. In this case, the second accommodation portion 693 can be disposed at the second portion LA2 of the first (1-2) member 630. For example, the second vibration device 530 can be disposed at the first portion UA2 of the first (1-2) member 630, and the second accommodation portion 693 can be disposed at the second portion LA2 of the first (1-2) member 630. The first portion UA2 of the first (1-2) member 630 can correspond to or be disposed at the first area UA of the second peripheral area EA2 of the first cover 400. The second portion LA2 of the first (1-2) member 630 can correspond to or be disposed at the second area LA of the second peripheral area EA2 of the first cover 400.

[0514] For example, the second vibration device 530 can be disposed between the second area LA of the second peripheral area EA2 of the first cover 400 and the second portion LA2 of the first (1-2) member 630. In this case, the second accommodation portion 693 can be disposed at the first portion UA2 of the first (1-2) member 630. For example, the second vibration device 530 can be disposed at the second portion LA2 of the first (1-2) member 630, and the second accommodation portion 693 can be disposed at the first portion UA2 of the first (1-2) member 630.

[0515] The device according to another embodiment of the disclosure can include a first member 600 and a second member 700. The first member 600 can be disposed at the second member 700. For example, the first member 600 can be disposed in a receiving portion 690 formed at the second member 700. For example, the first member 600 can be disposed at a first portion UA1 or UA2 or a second portion LA1 or LA2 of the second member 700. For example, the first member 600 can be disposed at a front surface of the second member 700 opposite to the first cover 400, or can be disposed at a rear surface of the second member 700 facing the front surface of the second member 700.

[0516] The first member 600 can vibrate based on the vibration of the corresponding vibration device 500 due to the vibration of the second member 700, to enhance the sound characteristics of the low-pitched sound band. The first member 600 can vibrate based on the vibration of the vibration device 500 through the vibration of the second member 700. The first member 600 can serve as an additional vibration source separated from the vibration device 500, thereby enhancing the intensity of the haptic feedback and the vibration sensation (or vibration characteristics). Accordingly, the first member 600 can be referred to as a radiation member, a front radiation member, a sound radiation member, a primary vibration member, a haptic member, a haptic feedback member, a front vibration member, or a reaction vibration member. However, embodiments of the disclosure are not limited thereto.

[0517] The first member 600 according to an exemplary embodiment of the disclosure can include a first (1-1) member 610 and a second (1-2) member 620.

[0518] The first (1-1) member 610 can be disposed at the second (1-2) member 620. For example, the first (1-1) member 610 can be disposed in a receiving portion 690 formed at the second (1-2) member 620. For example, the first (1-1) member 610 can be disposed at a first portion UA1 or a second portion LA1 of the second (1-2) member 620. For example, the first (1-1) member 610 can be disposed at a front surface of the second (1-2) member 620 opposite to the first cover 400, or can be disposed at a rear surface of the second (1-2) member 620 facing the front surface of the second (1-2) member 620.

[0519] The first (1-1) member 610 can be disposed at the first portion UA1 or the second portion LA1 of the second (1-2) member 620. For example, the first (1-1) member 610 can be disposed at a portion of the second (1-2) member 620 different from a portion of the second (1-2) member 620 at which the first vibration device 510 is disposed. For example, the first (1-1) member 610 can be disposed at the second portion LA1 of the second (1-2) member 620, and the first vibration device 510 can be disposed at the first portion UA1 of the second (1-2) member 620. For example, the first (1-1) member 610 can be disposed at the first portion UA1 of the second (1-2) member 620, and the first vibration device 510 can be disposed at the second portion LA1 of the second (1-2) member 620.

[0520] The first rear vibration member 810 according to an exemplary embodiment of the present disclosure can further include a first vibration plate. The first rear vibration member 810 can further include the first vibration plate and a first connection member interposed between the bottom portion 611 of the first (1-1) member 610 and the first vibration plate. For example, the first vibration plate can be disposed at a rear surface of the first accommodation portion 691. For example, the first vibration plate can vibrate by reacting to vibration of the first (1-1) member 610 based on vibration of at least one or more of the first vibration device 510-1 and the third vibration device 510-2 of the first vibration device 510, thereby outputting a haptic vibration. For example, the first rear vibration member 810 can be referred to as a first radiation member, a first rear radiation member, a first sound radiation member, a first secondary vibration member, a first haptic member, a first haptic feedback member, a first rear vibration member, or a first reaction vibration member, etc., but embodiments of the present disclosure are not limited thereto.

[0521] To secure sufficient vibration characteristics of the first rear vibration member 810 and match an acoustic phase between the first rear vibration member 810 and the first vibration device 510, the first rear vibration member 810 and the first vibration device 510 can be spaced apart from each other at a certain rate distance (first distance) L1.

[0522] For example, the first distance L1 can be a distance between a center of the first rear vibration member 810 and a center of an area (or exposed area) 510-2a of the first (1-2) vibration device 510-2 exposed through the first through-hole 671 formed at the first (1-1) member 610, but a reference position of the first distance L1 is not limited thereto. For example, the first distance L1 can be a distance between a center of the first rear vibration member 810 and a center of the first (1-2) vibration device 510-2 of the first vibration device 510, the two centers being located at areas opposite to each other with respect to the second center line CL2.

[0523] The second rear vibration member 830 can be disposed at the first (1-2) member 630. For example, the second rear vibration member 830 can be disposed at the bottom portion 631 of the first (1-2) member 630. For example, the second rear vibration member 830 can be disposed at a front surface or a rear surface of the bottom portion 631 of the first (1-2) member 630. For example, the second rear vibration member 830 can be disposed at the second accommodation portion 693 of the first (1-2) member 630.

[0524] The second rear vibration member 830 can be disposed at the first portion UA2 or the second portion LA2 of the first (1-2) member 630. For example, the second rear vibration member 830 can be disposed at a region different from a region in which the second vibration device 530 is disposed. For example, the second rear vibration member 830 can be disposed at the second portion LA2 of the first (1-2) member 630, and the second vibration device 530 can be disposed at the first portion UA2 of the first (1-2) member 630. For example, the second rear vibration member 830 can be disposed at the first portion UA2 of the first (1-2) member 630, and the second vibration device 530 can be disposed at the second portion LA2 of the first (1-2) member 630.

[0525] The second rear vibration member 830 according to the embodiments of the disclosure can further include a second vibration plate. The second rear vibration member 830 can further include the second vibration plate and a second rear connecting member interposed between the bottom portion 631 of the first (1-2) member 630 and the second vibration plate. For example, the second vibration plate can be disposed at a rear surface of the accommodation portion 693. For example, the second vibration plate can vibrate by reacting to vibration of the first (1-2) member 630 based on vibration of one or more of the first vibration device 510 and the second vibration device 530, thereby outputting a haptic vibration. For example, the second rear vibration member 830 can be referred to as a second radiation member, a second rear radiation member, a second sound radiation member, a second secondary vibration member, a second haptic member, a second haptic feedback member, a second rear vibration member, or a second reaction vibration member, etc., but the embodiments of the disclosure are not limited thereto.

[0526] In order to secure sufficient vibration characteristics of the second rear vibration member 830 and match an acoustic phase between the second rear vibration member 830 and the second vibration device 530, the second rear vibration member 830 and the second vibration device 530 can be spaced apart from each other at a certain rate distance (second distance) L2.

[0527] For example, the second distance L2 can be a distance between a center of the second rear vibration member 830 and a center of an area (or exposed area) 530-2a of the second (2-2) vibration device 530-2 exposed through the second through-hole 673 formed at the first (1-2) member 630, but a reference position of the second distance L2 is not limited thereto. For example, the second distance L2 can be a distance between a center of the second rear vibration member 830 and a center of the second (2-2) vibration device 530-2 of the second vibration device 530, the two centers being located at regions opposite to each other with respect to the second center line CL2. For example, the first distance L1 between the first rear vibration member 810 and the first vibration device 510 can be the same as or different from the second distance L2 between the second rear vibration member 830 and the second vibration device 530.

[0528] According to an exemplary embodiment of this disclosure, the (1-1) vibration device 510-1, the (1-2) vibration device 510-2, the second component 510-3, the (1-1) component 610, and the first rear vibration component 810 can constitute a first vibration generating device. According to an embodiment of this disclosure, the (2-1) vibration device 530-1, the (2-2) vibration device 530-2, the third component 530-3, the (1-2) component 630, and the second rear vibration component 830 can constitute a second vibration generating device.

[0529] Figure 24 Exemplary measurement points in a display component for measuring vibration acceleration in a device according to an exemplary embodiment of the present disclosure are shown. Figure 24 This is a diagram showing the front surface of an exemplary device.

[0530] exist Figure 24 In Figure 22 In the exemplary device shown, the first to third measuring points MP1, MP2, and MP3 may be positions corresponding to (or overlapping with) the (1-1) member 610 or corresponding to (or overlapping with) the first peripheral region EA1 of the rear portion 410 of the first cover 400. The first measuring point MP1 may be a position corresponding to (or overlapping with) the first vibration device 510 (or the (1-2) vibration device 510-2 of the first vibration device 510). The third measuring point MP3 may be a position corresponding to (or overlapping with) the first rear vibration member 810, and the second measuring point MP2 may be the center position between the first measuring point MP1 and the third measuring point MP3.

[0531] Table 1 below shows the results obtained through... Figure 24 The results are obtained by measuring vibration acceleration at the first to third measurement points MP1, MP2, and MP3 shown. The comparison values ​​are the vibration accelerations measured at the first to third measurement points MP1, MP2, and MP3 of the exemplary device without the application of the first component 600 and the rear vibration component 800. The experimental values ​​are the vibration accelerations measured at the first to third measurement points MP1, MP2, and MP3 of the device with the application of the first component 600 and the rear vibration component 800. The comparison and experimental values ​​are measured by applying a 5-volt sine wave with a frequency of 200 Hz to the second vibration device 530.

[0532] [Table 1]

[0533]

[0534] Referring to Table 1, it can be seen that the experimental value measured at the first measurement point MP1 corresponding to (overlapping with) the first vibration device 510 is the same as the comparative value. However, the experimental value measured at each of the second measurement point MP2 and the third measurement point MP3 is greater than the corresponding comparative value. Thus, in the device including the first member 600 and the rear vibration member 800 as in another exemplary embodiment of the disclosure, the vibration acceleration can increase compared to the exemplary device not including the first member 600 and the rear vibration member 800. Thus, the response time of the haptic feedback can be improved. Thus, because the vibration is transmitted upward at a high speed to an area not corresponding to (overlapping with) the first vibration device 510, the vibration characteristics or the vibration feeling of the haptic feedback can be improved.

[0535] The vibration device according to an exemplary embodiment of the disclosure can be applied to a vibration device provided in a device. The device according to an exemplary embodiment of the disclosure can be applied to a mobile device, a video phone, a smart watch, a watch phone, a wearable device, a foldable device, a rollable device, a bendable device, a flexible device, a curved device, a variable device, a sliding device, an electronic device, an electronic organizer, an electronic book, a portable multimedia player (PMP), a personal digital assistant (PDA), an MP3 player, a mobile medical device, a desktop personal computer (PC), a laptop PC, a netbook computer, a workstation, a navigation device, a car navigation device, a car display device, a car device, a theater display device, a theater device, a TV, a wallpaper device, a signage device, a game console, a notebook computer, a monitor, a camera, a camcorder, a home appliance, etc. Further, the vibration device according to an exemplary embodiment of the disclosure can be applied to an organic light emitting illumination device or an inorganic light emitting illumination device. When the vibration device is applied to the illumination device, the vibration device according to an exemplary embodiment of the disclosure can be used as an illumination and a speaker. Further, when the vibration device of the disclosure is applied to a mobile device, the vibration device according to an exemplary embodiment of the disclosure can be used as one or more of a speaker, a receiver, and a haptic, but the disclosure is not limited thereto.

[0536] An electronic device and a vibration generating device according to an embodiment of the disclosure will be described below.

[0537] An electronic device according to an embodiment of the disclosure can include a vibration member, a first cover disposed at a rear surface of the vibration member, a vibration device disposed at a rear surface of the first cover, a first member disposed at the rear surface of the first cover and at a rear surface of the vibration member, and a rear vibration member disposed at the first member.

[0538] According to some embodiments of the disclosure, the vibration device can include a plate disposed at a rear surface of the first cover and configured to cover the hole, and a vibration generator disposed at a rear surface of the plate.

[0539] According to some embodiments of the disclosure, the plate can have a second thickness that is thinner than a first thickness of the rear portion of the first cover.

[0540] According to some embodiments of the disclosure, the plate can be curved away from or in a direction opposite to the vibration device.

[0541] According to some embodiments of the disclosure, the rear vibration member can be disposed at a front surface of the first member opposite to the first cover, or can be disposed at a rear surface of the first member opposite to the front surface of the first member.

[0542] According to some embodiments of the disclosure, the first member can include an accommodation portion, and the rear vibration member can be disposed in the accommodation portion.

[0543] According to some embodiments of the disclosure, the accommodation portion can be a portion of the first member that protrudes toward the first cover or protrudes in a direction opposite to the first cover.

[0544] According to some embodiments of the disclosure, the accommodation portion can be a groove formed at a portion of the front surface of the first member, or can be a groove formed at a portion of the rear surface of the first member.

[0545] According to some embodiments of the disclosure, the accommodation portion can include a hole or a slit that overlaps the rear vibration member.

[0546] According to some embodiments of the disclosure, the first cover can include a first peripheral area and a second peripheral area with respect to a first center line in the width direction, and the first member can be disposed at at least one or more of the first peripheral area and the second peripheral area of the first cover.

[0547] According to some embodiments of the disclosure, the first cover can include a first area and a second area with respect to a second center line in the length direction, and the first member can be disposed above the first area and the second area of the first cover.

[0548] According to some embodiments of the disclosure, the first member can include a first portion corresponding to the first area of the first cover and a second portion corresponding to the second area of the first cover, and the vibration device can be disposed at the first portion or the second portion of the first member, and the rear vibration member can be disposed at the first portion or the second portion of the first member.

[0549] According to some embodiments of the disclosure, the first member can include a first (1-1) member disposed at the rear surface of the first peripheral area of the first cover, and a second (1-2) member disposed at the rear surface of the second peripheral area of the first cover, each of the first (1-1) member and the second (1-2) member can include a first portion corresponding to the first area of the first cover and a second portion corresponding to the second area of the first cover, and the rear vibration member can include a first rear vibration member disposed at the first portion or the second portion of the first (1-1) member and a second rear vibration member disposed at the first portion of the second (1-2) member or the second portion of the second (1-2) member.

[0550] According to some embodiments of the disclosure, the first (1-1) member can have a structure symmetrical about a center line of the vibration member with the second (1-2) member.

[0551] According to some embodiments of the disclosure, the first (1-1) member can include a bottom portion disposed at the rear surface of the first vibration device and covering the rear surface of the first vibration device and a lateral portion disposed at the lateral surface of the first vibration device and covering the lateral surface of the first vibration device, the lateral portion of the first (1-1) member being connected to one side of the bottom portion of the first (1-1) member and disposed along a periphery of the bottom portion of the first (1-1) member. The second (1-2) member can include a bottom portion disposed at the rear surface of the second vibration device and covering the rear surface of the second vibration device and a lateral portion disposed at the lateral surface of the second vibration device and covering the lateral surface of the second vibration device, the lateral portion of the second (1-2) member being connected to one side of the bottom portion of the second (1-2) member and disposed along a periphery of the bottom portion of the second (1-2) member.

[0552] According to some embodiments of the disclosure, the first rear vibration member can include a first vibration plate and a first connection member interposed between the first (1-1) member and the first vibration plate, and the second rear vibration member can include a second vibration plate and a second connection member interposed between the second (1-2) member and the second vibration plate.

[0553] According to some embodiments of the disclosure, the vibration device can include a first vibration device disposed at the rear surface of the first peripheral area of the first cover, the first vibration device can be disposed at the first portion or the second portion of the first (1-1) member, and the first rear vibration member can be disposed at the first portion or the second portion of the first (1-1) member.

[0554] According to some embodiments of the disclosure, the vibration device can include a second vibration device disposed at a rear surface of the second peripheral area of the first cover, the second vibration device can be disposed at the first portion or the second portion of the first (1-2) member, and the second rear vibration member can be disposed at the first portion or the second portion of the first (1-2) member.

[0555] According to some embodiments of the disclosure, the vibration device can include a first vibration device disposed at a rear surface of the first peripheral area of the first cover and a second vibration device disposed at a rear surface of the second peripheral area of the first cover.

[0556] According to some embodiments of the disclosure, a first distance between the first vibration device and the first rear vibration member can be the same as or different from a second distance between the second vibration device and the second rear vibration member.

[0557] According to some embodiments of the disclosure, the first cover can include a first (1-1) hole disposed at the first peripheral area and a first (1-2) hole disposed at the second peripheral area, the first vibration device can cover the first (1-1) hole, and the second vibration device can cover the first (1-2) hole.

[0558] According to some embodiments of the disclosure, the first vibration device can include a first (1-1) vibration device disposed at a rear surface of the first peripheral area of the first cover and a first (1-2) vibration device disposed adjacent to the first (1-1) vibration device to cover the first (1-1) hole, and the second vibration device can include a second (2-1) vibration device disposed at a rear surface of the second peripheral area of the first cover and a second (2-2) vibration device disposed adjacent to the second (2-1) vibration device to cover the first (1-2) hole.

[0559] According to some embodiments of the disclosure, each of the first (1-1) vibration device and the second (2-1) vibration device can include a membrane type vibration device, and each of the first (1-2) vibration device and the second (2-2) vibration device can include a coil type vibration device.

[0560] According to some embodiments of the disclosure, each of the first (1-1) vibration device and the second (2-1) vibration device can include a vibration portion including a piezoelectric material, a first electrode layer disposed at a first surface of the vibration portion, and a second electrode layer disposed at a second surface of the vibration portion different from the first surface of the vibration portion.

[0561] According to some embodiments of the disclosure, each of the first (1-1) vibration device and the second (2-1) vibration device can further include a first protection member disposed above and covering the first electrode layer, and a second protection member disposed below and covering the second electrode layer.

[0562] According to some embodiments of the disclosure, each of the first (1-1) vibration device and the second (2-1) vibration device can further include: a first power line disposed at a rear surface of the first protection member facing the vibration portion and electrically connected to the first electrode layer; a second power line disposed at a front surface of the second protection member facing the vibration portion and electrically connected to the second electrode layer; and a pad part electrically connected to the first power line and the second power line.

[0563] According to some embodiments of the disclosure, the first (1-1) vibration device can include the first vibration generator and the first plate disposed at the rear surface of the first peripheral area of the first cover, and the second (2-1) vibration device can include the second vibration generator and the second plate disposed at the rear surface of the second peripheral area of the first cover.

[0564] According to some embodiments of the disclosure, the first plate can include the (2-1) hole overlapping the (1-1) hole, and the second plate can include the (2-2) hole overlapping the (1-2) hole.

[0565] According to some embodiments of the disclosure, the first cover can include a (3-1) hole disposed at a first area of the first cover and a (3-2) hole disposed at a second area of the first cover. The first vibration device can be disposed at the first area of the first cover and cover the (3-1) hole, and the second vibration device can be disposed at the second area of the first cover and cover the (3-2) hole.

[0566] According to some embodiments of the disclosure, the first plate can be curved away from or in a direction opposite to the (1-1) hole, and the second plate can be curved away from or in a direction opposite to the (1-2) hole.

[0567] According to some embodiments of the disclosure, the first plate can be disposed at a rear surface of the first peripheral area of the first cover, the first vibration generator can be disposed at the rear surface of the first plate or at the rear surface of the first peripheral area of the first cover, and the first plate can be disposed at a rear surface of the first vibration generator.

[0568] According to some embodiments of the disclosure, the second plate can be disposed at a rear surface of the second peripheral area of the first cover, the second vibration generator can be disposed at the rear surface of the second plate or at the rear surface of the second peripheral area of the first cover, and the second plate can be disposed at a rear surface of the second vibration generator.

[0569] According to some embodiments of the disclosure, each of the first vibration generator and the second vibration generator can include a vibration portion including a plurality of first portions including an inorganic material and a plurality of second portions between the plurality of first portions and including an organic material, a first electrode layer disposed at a first surface of the vibration portion, and a second electrode layer disposed at a second surface of the vibration portion different from the first surface of the vibration portion.

[0570] According to some embodiments of the disclosure, each of the first vibration generator and the second vibration generator can include a vibration portion including a piezoelectric material, a first electrode layer disposed at a first surface of the vibration portion, and a second electrode layer disposed at a second surface of the vibration portion different from the first surface of the vibration portion.

[0571] According to some embodiments of the disclosure, the first vibration device can include a second member disposed at a rear surface of a first peripheral area of the first cover, and the second vibration device can include a third member disposed at a rear surface of a second peripheral area of the first cover.

[0572] According to some embodiments of the disclosure, the (1-1)th vibration device and the (1-2)th vibration device can be disposed at the rear surface of the second member, and the (2-1)th vibration device and the (2-2)th vibration device can be disposed at the rear surface of the third member.

[0573] According to some embodiments of the disclosure, the second member can include a (4-1)th hole corresponding to the (1-1)th vibration device and a (4-2)th hole corresponding to the (1-2)th vibration device, and the third member can include a (5-1)th hole corresponding to the (2-1)th vibration device and a (5-2)th hole corresponding to the (2-2)th vibration device.

[0574] According to some embodiments of the disclosure, the third member can further include a portion disposed between the (5-1)th hole and the (5-2)th hole, the portion for acoustically separating a space in which the (2-1)th vibration device is disposed and a space in which the (2-2)th vibration device is disposed.

[0575] According to some embodiments of the disclosure, the (4-2)th hole can correspond to the (1-1)th hole, and the (5-2)th hole can correspond to the (1-2)th hole.

[0576] According to some embodiments of the disclosure, the vibration member can include one or more of a display panel including a plurality of pixels configured to display an image, a light emitting diode illumination panel, an organic light emitting illumination panel, and an inorganic light emitting illumination panel.

[0577] According to some embodiments of the disclosure, the vibration member can include one or more materials among metal, wood, rubber, plastic, glass, fiber, cloth, paper, and leather.

[0578] According to some embodiments of the disclosure, the vibration member can include one or more among a display panel including a plurality of pixels configured to display an image, a screen panel projecting an image from a display device, an illumination 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 mirror.

[0579] According to some embodiments of the disclosure, the electronic device can further include a display member including a display panel configured to display an image, the display member can include a back light unit disposed at a rear surface of the display panel, and a guide member between the display panel and the back light unit.

[0580] According to some embodiments of the disclosure, the display panel can be further configured to sense a touch applied to the display member, or output a sound according to a vibration of the vibration device, or generate haptic feedback in response to the touch.

[0581] According to some embodiments of the disclosure, the electronic device can further include a display member including a display panel configured to display an image, a front member disposed at a front surface of the display member, and a second cover disposed at a rear surface of the first cover to accommodate the display member, the first cover, the vibration device, and the first member on which the rear vibration member is disposed.

[0582] According to some embodiments of the disclosure, the second cover can include a cover case for providing an enclosed space between a rear portion of the first cover and a rear structure of the second cover.

[0583] According to some embodiments of the disclosure, the vibration device can be a membrane type vibration device.

[0584] According to some embodiments of the disclosure, the electronic device can further include an air gap disposed between the first cover and the vibration device.

[0585] A vibration generation device according to some embodiments of the disclosure can include a first member including a first hole and a second hole, a first vibration device disposed at the first hole, a second vibration device disposed at the second hole, a second member connected to a rear surface of the vibration member and configured to cover the first member, the first vibration device, and the second vibration device, and a rear vibration member disposed at the second member.

[0586] According to some embodiments of the present disclosure, the rear vibration member can vibrate based on vibrations of at least one or more of the first vibration device and the second vibration device.

[0587] According to some embodiments of the present disclosure, the second member can include a receiving portion, and the rear vibration member can be disposed in the receiving portion.

[0588] According to some embodiments of the present disclosure, the receiving portion can include a groove formed at a portion of a front surface of the second member, or a groove formed at a portion of a rear surface of the second member.

[0589] According to some embodiments of the present disclosure, the receiving portion can include a hole overlapping the rear vibration member.

[0590] According to some embodiments of the present disclosure, the rear vibration member can further include a vibration plate disposed at the receiving portion, and the vibration plate can be configured to vibrate by vibrations of the second member based on vibrations of at least one or more of the first vibration device and the second vibration device.

[0591] According to some embodiments of the present disclosure, the first vibration device can output a first sound pressure level to the vibration member through the first hole, the second vibration device can output a second sound pressure level different from the first sound pressure level to the vibration member through the second hole, and the rear vibration member can output a haptic vibration based on vibrations of at least one or more of the first vibration device and the second vibration device.

[0592] According to some embodiments of the present disclosure, the first vibration device can include a vibration generator including a piezoelectric device, and the second vibration device can include a coil type vibration generator.

[0593] According to some embodiments of the present disclosure, the first vibration device can be disposed between the first member and the second member and cover the first hole, and the second vibration device can be disposed between the first member and the second member and cover the second hole.

[0594] According to some embodiments of the present disclosure, the second member can include a bottom portion covering a rear surface of each of the first member, the first vibration device, and the second vibration device, and a lateral portion connected to the vibration member and disposed at a periphery of the bottom portion to cover a lateral surface of each of the first member, the first vibration device, and the second vibration device.

[0595] According to some embodiments of the present disclosure, the second member can further include a through-hole disposed at the bottom portion and overlapping the first vibration device.

[0596] According to some embodiments of the disclosure, the first vibration device can further include a plate covering the first hole, and the vibration generator can be disposed between the plate and the second member.

[0597] According to some embodiments of the disclosure, the plate can be curved away from or in a direction opposite to the first hole.

[0598] According to some embodiments of the disclosure, the first vibration device can be a membrane type vibration device.

[0599] It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the spirit or scope of the disclosure. Thus, it is intended that the present disclosure cover the modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalents.

[0600] CROSS-REFERENCE TO RELATED APPLICATIONS

[0601] This application claims the benefit of and priority to Korean Patent Application No. 10-2020-0190065, filed December 31, 2020, and Korean Patent Application No. 10-2021-0189239, filed December 28, 2021, which are incorporated by reference herein as if fully set forth herein in their entirety.

Claims

1. A device for outputting sound, the device comprising: Vibrating components; A first cover is disposed on the rear surface of the vibrating member; A vibration device disposed on the rear surface of the first cover and configured to cause the vibration member to vibrate; A first component is disposed on the rear surface of the first cover and on the rear surface of the vibrating component, wherein the first component includes a bottom portion covering the rear surface of the vibrating device and a lateral portion spaced apart from the vibrating device and covering the lateral surface of the vibrating device. A rear vibration member, wherein the rear vibration member is disposed at the first member; and The second cover is disposed on the rear surface of the first cover.

2. The device according to claim 1, wherein, The rear vibration member is disposed on the front surface of the first member opposite to the first cover, or the rear vibration member is disposed on the rear surface of the first member opposite to the front surface of the first member.

3. The device according to claim 1, wherein, The first component includes a receiving portion, and The rear vibration member is disposed in the receiving portion.

4. The device according to claim 3, wherein, The receiving portion is a part of the first member that protrudes toward the first cover or in the opposite direction to the first cover.

5. The device according to claim 3, wherein, The receiving portion is a groove formed on a portion of the front surface of the first member, or the receiving portion is a groove formed on a portion of the rear surface of the first member.

6. The device according to claim 1, in, The first cover includes a first peripheral region and a second peripheral region relative to a first centerline in the width direction, and The first component is disposed at at least one or more locations in the first peripheral region and the second peripheral region of the first cover.

7. The device according to claim 6, in, The first cover includes a first region and a second region relative to a second centerline in the length direction, and The first component is disposed above the first and second regions of the first cover.

8. The device according to claim 7, in, The first component includes a first portion corresponding to a first region of the first cover and a second portion corresponding to a second region of the first cover. The vibration device is installed at the first part or the second part of the first component, and The rear vibration component is disposed at the first part or the second part of the first component.

9. The device according to claim 7, in, The first component includes a first (1-1) component disposed on the rear surface of the first peripheral region of the first cover and a first (1-2) component disposed on the rear surface of the second peripheral region of the first cover. Each of the (1-1)th component and the (1-2)th component includes a first portion corresponding to a first region of the first cover and a second portion corresponding to a second region of the first cover. The rear vibration component includes: A first rear vibration member is disposed at a first or second portion of the (1-1) member; and The second rear vibration member is disposed at the first or second part of the (1-2) member.

10. The device according to claim 9, in, The vibration device includes a first vibration device disposed on the rear surface of the first peripheral region of the first cover. Wherein, the first vibration device is disposed at the first or second part of the (1-1)th component, and The first rear vibration member is disposed at the first or second part of the (1-1) member.

11. The device according to claim 9, in, The vibration device includes a second vibration device disposed on the rear surface of the second peripheral region of the first cover. The second vibration device is disposed at the first or second part of the (1-2) component, and The second rear vibration member is disposed at the first part of the (1-2) member or the second part of the (1-2) member.

12. The device according to claim 9, wherein, The vibration device includes a first vibration device disposed on the rear surface of the first peripheral region of the first cover, and a second vibration device disposed on the rear surface of the second peripheral region of the first cover.

13. The device according to claim 12, wherein, The first distance between the first vibrating device and the first rear vibrating component is the same as or different from the second distance between the second vibrating device and the second rear vibrating component.

14. The device according to claim 12, in, The first cover includes a first hole (1-1) disposed in the first peripheral region and a second hole (1-2) disposed in the second peripheral region. Wherein, the first vibration device covers the (1-1)th hole, and The second vibration device covers the (1-2)th hole.

15. The device according to claim 14, in, The first vibration device includes a first (1-1) vibration device disposed on the rear surface of the first peripheral region of the first cover, and a second (1-2) vibration device disposed adjacent to the first (1-1) vibration device to cover the first (1-1) hole. The second vibration device includes a (2-1) vibration device disposed on the rear surface of the second peripheral region of the first cover, and a (2-2) vibration device disposed adjacent to the (2-1) vibration device to cover the (1-2) hole.

16. The device according to claim 15, in, Each of the (1-1)th vibration device and the (2-1)th vibration device includes a diaphragm vibration device, and Each of the (1-2) vibration devices and the (2-2) vibration devices includes a coil-type vibration device.

17. The device according to claim 15, wherein, Each of the (1-1)th vibration device and the (2-1)th vibration device includes: The vibrating component includes a piezoelectric material; A first electrode layer is disposed on a first surface of the vibrating portion; and The second electrode layer is disposed on a second surface of the vibrating portion that is different from the first surface of the vibrating portion.

18. The device according to claim 15, in, The (1-1)th vibration device includes a first vibration generator and a first plate disposed on the rear surface of the first peripheral region of the first cover, and The (2-1) vibration device includes a second vibration generator and a second plate disposed on the rear surface of the second peripheral region of the first cover.

19. The device according to claim 18, in, The first plate is disposed on the rear surface of the first peripheral region of the first cover. The first vibration generator is disposed on the rear surface of the first plate or on the rear surface of the first peripheral area of ​​the first cover. The first plate is disposed on the rear surface of the first vibration generator.

20. The device according to claim 18, in, The second plate is disposed on the rear surface of the second peripheral region of the first cover. The second vibration generator is disposed on the rear surface of the second plate or on the rear surface of the second peripheral region of the first cover. The second plate is disposed on the rear surface of the second vibration generator.

21. The device according to claim 18, wherein, Each of the first vibration generator and the second vibration generator includes: The vibrating part includes a plurality of first parts and a plurality of second parts, the plurality of first parts comprising inorganic materials, and the plurality of second parts disposed between the plurality of first parts and comprising organic materials; A first electrode layer is disposed on a first surface of the vibrating portion; and The second electrode layer is disposed on a second surface of the vibrating portion that is different from the first surface of the vibrating portion.

22. The device according to claim 18, wherein, Each of the first vibration generator and the second vibration generator includes: The vibrating component includes a piezoelectric material; A first electrode layer is disposed on a first surface of the vibrating portion; and The second electrode layer is disposed on a second surface of the vibrating portion that is different from the first surface of the vibrating portion.

23. The device according to claim 15, in, The first vibration device includes a second component disposed on the rear surface of the first peripheral region of the first cover, and The second vibration device includes a third component disposed on the rear surface of the second peripheral region of the first cover.

24. The device according to claim 23, in, The (1-1)th vibration device and the (1-2)th vibration device are disposed on the rear surface of the second component, and The (2-1) vibration device and the (2-2) vibration device are disposed on the rear surface of the third component.

25. The device according to claim 24, in, The second component includes a fourth hole corresponding to the first (1-1) vibration device and a fourth hole corresponding to the first (1-2) vibration device, and The third component includes a (5-1) hole corresponding to the (2-1) vibration device and a (5-2) hole corresponding to the (2-2) vibration device.

26. The device according to claim 25, in, The (4-2)th hole corresponds to the (1-1)th hole, and Wherein, the (5-2)th hole corresponds to the (1-2)th hole.

27. The device according to any one of claims 1 to 26, wherein, The vibrating component includes one or more of a display panel containing a plurality of pixels configured to display an image, a light-emitting diode illumination panel, an organic light-emitting illumination panel, and an inorganic light-emitting illumination panel.

28. The device according to any one of claims 1 to 26, wherein, The vibrating component includes one or more materials selected from metal, wood, rubber, plastic, glass, fiber, cloth, paper, and leather.

29. The device according to any one of claims 1 to 26, wherein, The vibrating component includes one or more of the following: a display panel containing a plurality of pixels configured to display an image; a screen panel for projecting an image from a display device; a lighting panel; a sign panel; vehicle interior material; vehicle window; vehicle exterior material; building ceiling material; building interior material; building window; aircraft interior material; aircraft window; and a reflector.

30. The device according to any one of claims 1 to 26, further comprising a display component including a display panel configured to display an image. in, The display component includes a backlight disposed on the rear surface of the display panel and a guide component located between the display panel and the backlight.

31. The apparatus according to any one of claims 1 to 26, further comprising: The display component includes a display panel configured to display an image; as well as A front component is disposed on the front surface of the display component; The second cover is configured to accommodate the display component, the first cover, the vibration device, and the first component on which the rear vibration component is disposed.

32. A vibration generating device, the vibration generating device comprising: A first component, the first component including a first hole and a second hole; A first vibration device is disposed at the first hole; The second vibration device is installed at the second hole; A second component is connected to the rear surface of the vibrating component and is configured to cover the first component, the first vibrating device, and the second vibrating device. A rear vibration component, wherein the rear vibration component is disposed at the second component; as well as The second cover is disposed on the rear surface of the second member.

33. The vibration generating device according to claim 32, wherein, The rear vibration member is configured to vibrate based on the vibration of at least one or more of the first vibration device and the second vibration device.

34. The vibration generating device according to claim 32, in, The second component includes a receiving portion, and The rear vibration member is disposed in the receiving portion.

35. The vibration generating device according to claim 34, wherein, The receiving portion includes a groove formed on a portion of the front surface of the second member or a groove formed on a portion of the rear surface of the second member.

36. The vibration generating device according to claim 34, wherein, The receiving portion includes a hole that overlaps with the rear vibration member.

37. The vibration generating device according to any one of claims 34 to 36, wherein, The rear vibration component also includes a vibration plate disposed at the receiving portion, and The vibrating plate is configured to vibrate by vibrations of the second component based on at least one or more of the vibrations of the first vibration device and the second vibration device.

38. The vibration generating device according to any one of claims 32 to 36, in, The first vibration device outputs a first sound pressure level to the vibrating component through the first hole. The second vibration device outputs a second sound pressure level, different from the first sound pressure level, to the vibrating component through the second hole, and The rear vibration component outputs tactile vibrations based on the vibrations of at least one or more of the first vibration device and the second vibration device.

39. The vibration generating device according to any one of claims 32 to 36, in, The first vibration device includes a vibration generator comprising piezoelectric elements, and The second vibration device includes a coil-type vibration generator.

40. The vibration generating device according to any one of claims 32 to 36, wherein, The first vibration device is disposed between the first component and the second component and covers the first hole, and The second vibration device is disposed between the first component and the second component and covers the second hole.

Images