Vibration device and vibration generating device including the vibration device

Abstract

A vibration device and a vibration generating device including the vibration device are disclosed. The vibration generating device includes a display panel configured to display an image, a vibration device disposed on a rear surface of the display panel to vibrate the display panel, and a spacer member disposed outside or inside the vibration device, wherein the vibration device includes a plurality of vibration structures.

Description

Technical Field

[0001] The present disclosure relates to a vibration device and a vibration generating device including the vibration device. Background Art

[0002] Generally, in a display device, a display panel displays an image, and a separate speaker should be installed to provide sound. When the speaker is located in the display device, the speaker occupies space, and due to this, the design and spatial layout of the display device are restricted.

[0003] A speaker applied to a display device may be, for example, an actuator including a magnet and a coil. However, when the actuator is applied to a display device, its thickness is large. A piezoelectric element capable of achieving thinness has received wide attention.

[0004] Because a piezoelectric element has fragility, the piezoelectric element is easily damaged by an external impact, and thus the reliability of sound reproduction is low. In addition, when a speaker such as a piezoelectric element is applied to a flexible display device, there is a problem of damage due to its fragile characteristics. Summary of the Invention

[0005] The inventors of the present disclosure have recognized the above problems and have conducted various experiments to implement a vibration device for improving sound quality and sound pressure level characteristics. Therefore, through various experiments, the inventors of the present disclosure have invented a vibration generating device having a new structure, the vibration generating device including a vibration device for improving sound quality and sound pressure level characteristics. Accordingly, embodiments of the present disclosure relate to a vibration generating device that substantially eliminates one or more problems caused by limitations and disadvantages of the prior art.

[0006] One aspect of the present disclosure is to provide a vibration device and a vibration generating device including the vibration device, the vibration device vibrating a vibration member (or a vibration object) to generate sound and enhancing sound pressure level characteristics.

[0007] Additional features and aspects will be set forth in part in the description that follows and, in part, will be apparent from the description, or may be learned by practice of the inventive concepts presented herein. Other features and aspects of the inventive concepts may be realized and obtained by means of the structures particularly pointed out in the written description or derived therefrom, their claims, and the drawings.

[0008] To achieve these and other aspects of the inventive concepts as embodied and broadly described herein, a vibration generating device includes a display panel configured to display an image, a vibration device disposed on a rear surface of the display panel to vibrate the display panel, and a spacer member disposed outside or inside the vibration device, the vibration device including a plurality of vibration modules.

[0009] In another aspect of the present disclosure, a vibration generating device includes a vibration part and a cushion member outside or inside the vibration part, and the vibration part includes a plurality of vibration modules.

[0010] In another aspect of the present disclosure, a vibration generating device includes a vibration member and a vibration device provided at the vibration member, and the vibration device includes a vibration part including a plurality of vibration modules and a cushion member outside or inside the vibration part.

[0011] The vibration generating device according to an embodiment of the present disclosure may include a vibration device that vibrates a vibration member (or a vibration object), and thus may generate sound such that a traveling direction of the sound of the vibration generating device is a direction toward a front region in front of the display panel or the vibration member (or the vibration object).

[0012] According to an embodiment of the present disclosure, the cushion member may be provided outside or inside the vibration device, thereby providing a vibration generating device having enhanced sound output characteristics.

[0013] Other systems, methods, features, and advantages will be or will become apparent to those skilled in the art upon viewing the following drawings and detailed description. All such additional systems, methods, features, and advantages are intended to be included within this specification, within the scope of the present disclosure, and are protected by the following claims. Any content in this section should not be construed as a limitation on these claims. Other aspects and advantages are discussed in conjunction with the embodiments of the present disclosure below.

[0014] It should be understood that the above summary and the following detailed description of the present disclosure are both exemplary and explanatory and are intended to provide further explanation of the inventive concept claimed.

[0015] Note 1. A vibration generating device, the vibration generating device comprising:

[0016] A display panel configured to display an image;

[0017] A vibration device provided on a rear surface of the display panel to vibrate the display panel, the vibration device including a plurality of vibration structures; and

[0018] A cushion member provided outside or inside the vibration device.

[0019] Note 2. The vibration generating device according to Note 1, wherein the cushion member is provided between the plurality of vibration structures.

[0020] Supplementary Note 3. The vibration generating device according to Supplementary Note 2, wherein the pad member includes a plurality of pad members, and each of the plurality of pad members is configured to be equal to each of the plurality of vibration structures.

[0021] Supplementary Note 4. The vibration generating device according to Supplementary Note 1, wherein the pad member includes a material that is the same as the material of the plurality of vibration structures.

[0022] Supplementary Note 5. The vibration generating device according to Supplementary Note 1, the vibration generating device further comprising:

[0023] a support member disposed at the rear surface of the display panel,

[0024] wherein the pad member is disposed between the support member and the vibration device.

[0025] Supplementary Note 6. The vibration generating device according to Supplementary Note 5, wherein the support member is spaced apart from the rear surface of the display panel, and there is a gap space between the support member and the rear surface of the display panel.

[0026] Supplementary Note 7. The vibration generating device according to Supplementary Note 5, the vibration generating device further comprising:

[0027] a separator disposed between the display panel and the support member and configured to separate the plurality of vibration structures from each other.

[0028] Supplementary Note 8. The vibration generating device according to Supplementary Note 5, wherein the region between the plurality of vibration structures overlaps with the pad member.

[0029] Supplementary Note 9. The vibration generating device according to Supplementary Note 1, wherein the vibration device includes N or more vibration structures, where N is a natural number of 2 or greater.

[0030] Supplementary Note 10. The vibration generating device according to Supplementary Note 9, wherein the vibration structures are arranged to be spaced apart from each other in the width direction of the display panel or in the length direction of the display panel that intersects with the width direction.

[0031] Supplementary Note 11. The vibration generating device according to Supplementary Note 10, wherein the separation distance between the vibration structures is 0.1 mm or greater and less than 3 cm with respect to the width direction.

[0032] Supplementary Note 12. The vibration generating device according to Supplementary Note 1, the vibration generating device further comprising:

[0033] a support member disposed at the rear surface of the display panel; and

[0034] A separator disposed between the display panel and the support member, wherein the separator is configured to separate the plurality of vibration structures from each other.

[0035] Supplementary Note 13. The vibration generating device according to Supplementary Note 1, wherein each of the plurality of vibration structures includes a first portion and a second portion between adjacent first portions.

[0036] Supplementary Note 14. The vibration generating device according to Supplementary Note 13, wherein the arrangement direction of the first portion and the arrangement direction of the second portion are the same as the width direction of the display panel, the length direction of the display panel, or a combination of the width direction of the display panel and the length direction of the display panel.

[0037] Supplementary Note 15. The vibration generating device according to Supplementary Note 13, wherein the first portion includes an inorganic material and the second portion includes an organic material.

[0038] Supplementary Note 16. The vibration generating device according to Supplementary Note 13, wherein the cushion member is disposed corresponding to the first portion.

[0039] Supplementary Note 17. The vibration generating device according to Supplementary Note 1, wherein the vibration device includes a plurality of vibration generators each including the plurality of vibration structures.

[0040] Supplementary Note 18. The vibration generating device according to Supplementary Note 17, wherein each of the plurality of vibration generators is stacked and shifted in the same direction.

[0041] Supplementary Note 19. The vibration generating device according to Supplementary Note 1, wherein the vibration device includes:

[0042] A vibration portion;

[0043] A first electrode layer disposed at a first surface of the vibration portion; and

[0044] A second electrode layer disposed at a second surface of the vibration portion different from the first surface of the vibration portion.

[0045] Supplementary Note 20. The vibration generating device according to Supplementary Note 19, wherein the vibration device includes:

[0046] A first protective member disposed on the first electrode layer; and

[0047] A second protective member disposed below the second electrode layer.

[0048] Supplementary Note 21. The vibration generating device according to Supplementary Note 20, wherein the vibration device further comprises:

[0049] A first adhesive layer disposed between the first electrode layer and the first protective member and between the vibration structures; and

[0050] A second adhesive layer disposed between the second electrode layer and the second protective member and between the vibration structures.

[0051] Supplementary Note 22. The vibration generating device according to Supplementary Note 20, wherein the vibration device further comprises:

[0052] A first power line disposed at the first protective member;

[0053] A second power line disposed at the second protective member; and

[0054] A pad portion electrically connected to each of the first power line and the second power line.

[0055] Supplementary Note 23. The vibration generating device according to Supplementary Note 20, wherein the spacer member comprises:

[0056] A vibration layer;

[0057] A first electrode layer disposed on a first surface of the vibration layer; and

[0058] A second electrode layer disposed on a second surface of the vibration layer different from the first surface of the vibration layer.

[0059] Supplementary Note 24. The vibration generating device according to Supplementary Note 23, wherein for the display panel, the polarity of the first electrode layer of each vibration structure among the plurality of vibration structures is different from the polarity of the second electrode layer of the spacer member.

[0060] Supplementary Note 25. The vibration generating device according to Supplementary Note 23, wherein,

[0061] The first electrode layer of each vibration structure among the plurality of vibration structures is disposed closer to the display panel than the second electrode layer of each vibration structure among the plurality of vibration structures, and

[0062] The second electrode layer of the spacer member is disposed closer to the display panel than the first electrode layer of the spacer member.

[0063] Supplementary Note 26. The vibration generating device according to Supplementary Note 19, wherein the first protective member and the second protective member of each of the plurality of vibration structures share the cushion member.

[0064] Supplementary Note 27. The vibration generating device according to Supplementary Note 1, wherein the vibration generating device further comprises:

[0065] A plate, which is between the display panel and the vibration device.

[0066] Supplementary Note 28. A vibration device, which comprises:

[0067] A vibration part, which comprises a plurality of vibration structures; and

[0068] A cushion member, which is located outside or inside the vibration part.

[0069] Supplementary Note 29. The vibration device according to Supplementary Note 28, wherein the cushion member comprises the same material as that of the vibration structure.

[0070] Supplementary Note 30. The vibration device according to Supplementary Note 28, wherein the cushion member is arranged between the plurality of vibration structures.

[0071] Supplementary Note 31. The vibration device according to Supplementary Note 30, wherein the cushion member comprises a plurality of cushion members, and

[0072] wherein each of the vibration structures has a corresponding cushion member.

[0073] Supplementary Note 32. The vibration device according to Supplementary Note 30, wherein the cushion member is arranged parallel to the vibration structure of the vibration device.

[0074] Supplementary Note 33. The vibration device according to Supplementary Note 30, wherein the vibration device further comprises:

[0075] A plurality of vibration generators, each of the plurality of vibration generators comprising the plurality of vibration structures,

[0076] wherein the vibration generator and the cushion member are arranged in a stacked layout.

[0077] Supplementary Note 34. The vibration device according to Supplementary Note 28, wherein the vibration part comprises:

[0078] A vibration layer;

[0079] A first electrode layer, which is arranged at a first surface of the vibration layer; and

[0080] A second electrode layer, which is disposed at a second surface of the vibrating layer different from a first surface of the vibrating layer.

[0081] Supplementary Note 35. The vibrating device according to Supplementary Note 34, wherein the vibrating device further comprises:

[0082] A first protective member, which is disposed at a first surface of the first electrode layer; and

[0083] A second protective member, which is disposed at a second surface of the first electrode layer opposite to the first surface of the first electrode layer.

[0084] Supplementary Note 36. The vibrating device according to Supplementary Note 35, wherein the first protective member and the second protective member of the vibrating part share the cushion member.

[0085] Supplementary Note 37. The vibrating device according to Supplementary Note 34, wherein the cushion member comprises:

[0086] A vibrating layer;

[0087] A first electrode layer, which is disposed at a first surface of the vibrating layer; and

[0088] A second electrode layer, which is disposed at a second surface of the vibrating layer different from the first surface of the vibrating layer.

[0089] Supplementary Note 38. The vibrating device according to Supplementary Note 37, wherein the polarity of the first electrode layer of the vibrating part is different from the polarity of the second electrode layer of the cushion member.

[0090] Supplementary Note 39. The vibrating device according to Supplementary Note 37, wherein:

[0091] The cushion member is disposed in a partition area between the vibrating structures,

[0092] The first electrode layer of the vibrating structure corresponds to the second electrode layer of the cushion member, and the second electrode layer of the vibrating structure corresponds to the first electrode layer of the cushion member, and

[0093] The polarity of the first electrode layer of the vibrating structure is different from the polarity of the second electrode layer of the cushion member.

[0094] Supplementary Note 40. A vibration generating device, comprising:

[0095] A vibrating member; and

[0096] A vibrating device, which is disposed at the vibrating member,

[0097] Among them, the vibration device includes:

[0098] A vibration part, the vibration part includes a plurality of vibration structures; and

[0099] A spacer member, the spacer member is outside or inside the vibration part.

[0100] Note 41. The vibration generating device according to Note 40, wherein,

[0101] The vibration member includes a plate, and

[0102] The plate includes a metal material, or a single non-metal material or a composite non-metal material including one or more of wood, plastic, glass, cloth, and leather.

[0103] Note 42. The vibration generating device according to Note 40, wherein the vibration member includes a display panel including a plurality of pixels configured to display an image, or a non-display panel among a light-emitting diode lighting panel, an organic light-emitting lighting panel, and an inorganic light-emitting lighting panel.

[0104] Note 43. The vibration generating device according to Note 40, wherein the vibration member includes a display panel including a plurality of pixels configured to display an image, or one or more of vehicle interior materials, vehicle glass windows, building ceilings, building glass windows, building interior materials, aircraft interior materials, and aircraft glass windows.

[0105] Note 44. The vibration generating device according to Note 40, wherein the vibration part includes:

[0106] A vibration layer;

[0107] A first electrode layer, the first electrode layer is provided at a first surface of the vibration layer; and

[0108] A second electrode layer, the second electrode layer is provided at a second surface of the vibration layer different from the first surface of the vibration layer.

[0109] Note 45. The vibration generating device according to Note 44, wherein the vibration layer includes a first part including an inorganic material and a second part between adjacent first parts, and the second part includes an organic material.

[0110] Note 46. The vibration generating device according to Note 44, wherein the spacer member includes the same material as the material of the vibration layer.

[0111] Note 47. The vibration generating device according to Note 44, wherein the first electrode layer is provided closer to the vibration member than the second electrode layer.

[0112] Supplementary Note 48. The vibration generating device according to Supplementary Note 44, wherein the cushion member includes:

[0113] A vibration layer;

[0114] A first electrode layer disposed at a first surface of the vibration layer; and

[0115] A second electrode layer disposed at a second surface of the vibration layer different from the first surface of the vibration layer.

[0116] Supplementary Note 49. The vibration generating device according to Supplementary Note 48, wherein the second electrode layer of the cushion member is disposed closer to the vibration member than the first electrode layer of the cushion member.

[0117] Supplementary Note 50. The vibration generating device according to Supplementary Note 48, wherein the polarity of the first electrode layer of the vibration portion is different from the polarity of the second electrode layer of the cushion member.

[0118] Supplementary Note 51. The vibration generating device according to Supplementary Note 40, wherein,

[0119] The vibration portion includes a plurality of vibration generators, and

[0120] Each of the plurality of vibration generators includes the plurality of vibration structures.

[0121] Supplementary Note 52. The vibration generating device according to Supplementary Note 40, wherein the cushion member includes a plurality of cushion members, and each of the plurality of cushion members is configured to correspond to each of the plurality of vibration structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0122] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0123] Figure 1 An apparatus according to an embodiment of the present disclosure is shown.

[0124] Figure 2 is a cross-sectional view taken along line I-I' shown in Figure 1 FIG.

[0125] Figure 3 A vibration device according to an embodiment of the present disclosure is shown.

[0126] Figure 4 is a cross-sectional view taken along line Figure 3Cross-sectional view taken along line II-II' shown in

[0127] FIG. 5A to FIG. 5F shows Figure 4 the vibration structure shown in

[0128] Figure 6 shows a device according to another embodiment of the present disclosure.

[0129] Figure 7 shows a vibration device according to another embodiment of the present disclosure.

[0130] Figure 8 is along Figure 7 Cross-sectional view taken along line III-III' shown in

[0131] Fig. 9 is along Figure 3 Another cross-sectional view taken along line II-II' shown in

[0132] Fig.10 shows Figure 7 the vibration layer of the vibration generator shown in

[0133] Fig.11 shows a device according to another embodiment of the present disclosure.

[0134] Fig.12 is along Fig.11 Cross-sectional view taken along line IV-IV' shown in

[0135] Fig.13 is along Fig.11 Another cross-sectional view taken along line IV-IV' shown in

[0136] Fig.14 is along Fig.11 Another cross-sectional view taken along line IV-IV' shown in

[0137] Fig.15 is along Fig.11 Another cross-sectional view taken along line IV-IV' shown in

[0138] Fig.16 shows a device according to another embodiment of the present disclosure.

[0139] Fig.17 shows a device according to another embodiment of the present disclosure.

[0140] Fig.18 is along Fig.17 Cross-sectional view taken along line V-V' shown in

[0141] Fig.19 is along Fig.17 Another cross-sectional view taken along line V-V' shown in

[0142] Fig. 20 is along Fig.17 Another cross-sectional view taken along line V-V' shown in

[0143] Fig.21 is along Fig.17 Another cross-sectional view taken along line V-V' shown in

[0144] Fig. 22 is along Fig.17 Another cross-sectional view taken along line V-V' shown in

[0145] Fig.23 is along Fig.17 Another cross-sectional view taken along line V-V' shown in

[0146] Fig.24A is a front view showing a vibration device according to another embodiment of the present disclosure.

[0147] Fig. 24B is a rear view showing a vibration device according to another embodiment of the present disclosure.

[0148] Fig.25A is a front view showing a vibration device according to another embodiment of the present disclosure.

[0149] Fig.25B is a rear view showing a vibration device according to another embodiment of the present disclosure.

[0150] Fig.26A shows a device according to another embodiment of the present disclosure.

[0151] Fig.26B shows a device according to another embodiment of the present disclosure.

[0152] Fig. 27 shows the sound output characteristics of a device according to another embodiment of the present disclosure.

[0153] Fig.28 shows the sound output characteristics of a device according to another embodiment of the present disclosure.

[0154] Throughout the drawings and the detailed description, unless otherwise described, the same reference numerals should be understood to refer to the same elements, features, and structures. For clarity, illustration, and convenience, the relative dimensions of these elements may be exaggerated and depicted. Detailed Description

[0155] The advantages, features, and methods for realizing the present disclosure will be clarified by the following embodiments described with reference to the accompanying drawings. However, the present disclosure may be implemented in different forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art. Furthermore, the present disclosure is only defined by the scope of the claims.

[0156] The shapes, sizes, ratios, angles, and quantities disclosed in the drawings used to describe the embodiments of the present disclosure are merely examples, and thus, the present disclosure is not limited to the details shown. The same reference numerals denote the same elements throughout the specification. In the following description, when a detailed description of related known functions or configurations would unnecessarily obscure the focus of the present disclosure, such detailed descriptions will be omitted. When using "comprising", "having", and "including" described in this specification, another part may be added unless "only" is used. Unless otherwise indicated, terms in the singular form may include the plural form.

[0157] When interpreting an element, the element is interpreted as including an error or tolerance range, although there is no explicit description of such error or tolerance range.

[0158] When describing a positional relationship, for example, when the positional relationship between two components is described as, for example, "above", "on", "below", and "near", one or more other components may be provided between the two components unless more restrictive terms such as "only" or "directly" are used.

[0159] When describing a temporal relationship, for example, when a time sequence is described as, for example, "after", "subsequently", "next", and "before", discontinuous cases may be included unless more restrictive terms such as "only", "immediately", or "directly" are used.

[0160] It should be understood that although terms such as "first" and "second" may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of the present disclosure, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element.

[0161] When describing the elements of the present disclosure, terms such as "first", "second", "A", "B", "(a)", "(b)", etc. may be used. These terms are intended to distinguish the corresponding elements from other elements, and the basis, order, or quantity of the corresponding elements should not be limited by these terms. Unless otherwise specified, the statement that an element "is connected", "is coupled", or "is attached" to another element or layer means that the element or layer can not only be directly connected or attached to another element or layer, but also be indirectly connected or attached to another element or layer and "there is" one or more intermediate elements or layers between the elements or layers.

[0162] 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 the first item, the second item, and the third item" means all combinations of two or more of the first item, the second item, and the third item and the first item or the second item or the third item.

[0163] In the present disclosure, examples of display devices may include a display device in a narrow sense, such as an organic light-emitting display (OLED) module or a liquid crystal module (LCM) including a display panel and a driver for driving the display panel. In addition, examples of display devices may include a set (or kit) or a set of electronic devices as a complete product (or end product) including an LCM or an OLED module, such as a laptop computer, a TV, a computer monitor, a component including automotive equipment or other types of equipment for a vehicle, or a mobile electronic device such as a smart phone or a tablet computer.

[0164] Therefore, in the present disclosure, examples of display devices may include a display device in a narrow sense itself, such as an LCM or an OLED module, and a set (kit) as a final consumer device or an application product including an LCM or an OLED module.

[0165] In some embodiments, an LCM or an OLED module including a display panel and a driver may be referred to as a display device in a narrow sense, and an electronic device as a final product including an LCM or an OLED module may be referred to as a set. For example, a display device in a narrow sense may include a display panel such as an LCD or an OLED and a source printed circuit board (PCB) as a controller for driving the display panel. The kit may also include a kit PCB, which is a kit controller electrically connected to the source PCB to overall control the kit.

[0166] The display panel applied to the embodiments of the present disclosure may use all types of display panels, such as liquid crystal display panels, organic light emitting diode (OLED) display panels, and electroluminescent display panels, but these terms are not limited to a specific display panel that vibrates by a vibration device according to the embodiments of the present disclosure to output sound. In addition, the shape or size of the display panel applied to the display device according to the embodiments of the present disclosure is not limited.

[0167] For example, when the display panel is a liquid crystal display panel, the display panel may include a plurality of gate lines, a plurality of data lines, and a plurality of pixels respectively disposed in a plurality of pixel regions defined by the intersections of the gate lines and the data lines. In addition, the display panel may include an array substrate, an upper substrate, and a liquid crystal layer between the array substrate and the upper substrate. The array substrate includes thin film transistors (TFTs), and the thin film transistors (TFTs) are switching elements for adjusting the light transmittance of each of the plurality of pixels. The upper substrate includes a color filter and / or a black matrix.

[0168] In addition, when the display panel is an organic light emitting display panel, the display panel may include a plurality of gate lines, a plurality of data lines, and a plurality of pixels respectively disposed in a plurality of pixel regions defined by the intersections of the gate lines and the data lines. In addition, the display panel may include an array substrate, an organic light emitting device layer, and a packaging substrate. The array substrate includes TFTs, and the TFTs are elements for selectively applying a voltage to each of the pixels. The organic light emitting device layer is located on the array substrate, and the packaging substrate is disposed on the array substrate to cover the organic light emitting device layer. The packaging substrate can protect the TFTs and the organic light emitting device layer from external impacts and can prevent moisture or oxygen from penetrating into the organic light emitting device layer. In addition, the layer disposed on the array substrate may include an inorganic light emitting layer (e.g., a nanomaterial layer, quantum dots, etc.). As another embodiment of the present disclosure, the layer disposed on the array substrate may include micro light emitting diodes.

[0169] The display panel may also include a backing (such as a metal plate) attached to the display panel. However, the embodiments of the present disclosure are not limited to a metal plate, and the display panel may include another structure.

[0170] The features of the various embodiments of the present disclosure may be partially or wholly coupled or combined with each other, and as can be fully understood by those skilled in the art, they can interoperate with each other in various ways and be technically driven. The embodiments of the present disclosure may be executed independently of each other, or may be executed together in an interdependent relationship.

[0171] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. For ease of description, the scale of each element shown in the drawings is different from the actual scale, and thus, it is not limited to the scale shown in the drawings.

[0172] In a case where a speaker is provided in a display device to implement sound in the display device, the speaker can be implemented as a film type, and thus, the thickness of the display device can be relatively thin. The film type vibrating device can be manufactured to have a large area and can be applied to a display device having a large area. However, since the piezoelectric characteristics of the film type vibrating device are low, it may be difficult to apply the film type vibrating device to a display device having a large area due to low vibration. When ceramics are used to enhance the piezoelectric characteristics, the durability of the film type vibrating device may be weak, and the size of the ceramics may be limited. When a vibrating device including a piezoelectric composite including piezoelectric ceramics is applied to a display device, since the piezoelectric composite vibrates in a horizontal direction with respect to the left and right directions (for example, a horizontal direction with respect to the left and right directions of the display device), it may not be able to vibrate the display device sufficiently in the vertical (or front and back) direction. Therefore, it may be difficult to apply the vibrating device to the display device, and it may not be possible to output desired sound to a forward area in front of the display device. In a case where a film type piezoelectric element is applied to a display device, there may be a problem that the sound pressure characteristics are lower than those of a speaker such as an exciter. In a case where a stacked type piezoelectric element in which a plurality of film type piezoelectric elements are stacked in multiple layers is applied to a display, the power consumption may increase, and the thickness of the display device may become thick. In addition, when one vibrating device is provided at the rear surface of a display panel (for example, the rear surface of a mobile device), monaural sound can be output, but the inventors have recognized a problem of difficulty in outputting sound including stereo. Therefore, a vibrating device can be further provided at the periphery of the display panel to implement sound including stereo, but the inventors of the present disclosure have recognized such a problem that it is difficult to place an exciter in a flexible device in which a bent portion is provided in the display panel, and when a speaker including piezoelectric ceramics is provided, the piezoelectric ceramics are fragile.

[0173] Accordingly, the inventors of the present disclosure have performed various experiments for implementing a vibrating device that can implement stereo characteristics, can be applied to a flexible device, and can vibrate in a vertical direction with respect to the width direction of a display panel. Through various experiments, the inventors of the present disclosure have invented a device including a vibrating device having a new structure, which can implement stereo characteristics and can be applied to a flexible device. This will be described in detail below.

[0174] Figure 1 FIG. shows a device according to an embodiment of the present disclosure, and Figure 2 is a cross-sectional view taken along line I-I' shown in Figure 1 FIG.

[0175] Referring to Figure 1 and Figure 2, the device according to an embodiment of the present disclosure may include a display panel 100 that displays an image and a vibration device 200 disposed at a rear surface (or back surface) of the display panel 100.

[0176] Note that directional indications are given with respect to a user viewing an image in front of the device, such as a rear surface or a front surface. That is, the front surface of the display panel (or the vibration member or the vibration object) may be the surface having the display area, that is, the surface on which an image can be displayed. Similarly, the rear surface of the display panel (or the vibration member or the vibration object) may be the surface opposite to the front surface, that is, the surface away from the user. In addition, the thickness direction may refer to a direction perpendicular to the front surface and / or the rear surface. Additionally, "spaced apart in a plane parallel to the front surface and / or the rear surface of the display panel" may mean that a distance parallel to the front surface and / or the rear surface of the display panel (or the vibration member or the vibration object) is provided between two elements. Further, "planarly" may mean in a plane and / or parallel to the front surface / rear surface of the display panel.

[0177] The display panel 100 may display an electronic image or a digital image. For example, the display panel 100 may output light to display an image. The display panel 100 may be a curved display panel, or may be any type of display panel, such as a liquid crystal display panel, an organic light emitting display panel, a quantum dot light emitting display panel, a micro light emitting diode display panel, and an electrophoretic display panel. The display panel 100 may be a flexible display panel. For example, the display panel 100 may be a flexible light emitting display panel, a flexible electrophoretic display panel, a flexible electro-wetting display panel, a flexible micro light emitting diode display panel, or a flexible quantum dot light emitting display panel, but embodiments of the present disclosure are not limited thereto.

[0178] The display panel 100 according to an embodiment of the present disclosure may include a display area AA (or an effective display area) for displaying an image according to the driving of a plurality of pixels. The display panel 100 may include a non-display area IA (or a non-effective display area) surrounding the display area AA, but embodiments of the present disclosure are not limited thereto.

[0179] The display panel 100 according to an embodiment of the present disclosure may be configured to display an image in a type such as a top emission type, a bottom emission type, a dual emission type, etc. according to the structure of a pixel array layer including an anode electrode, a cathode electrode, and a light emitting device. In the top emission type, an image may be displayed by outputting visible light generated from the pixel array layer to the frontward area of the substrate. In the bottom emission type, an image may be displayed by outputting visible light generated from the pixel array layer to the backward area of the substrate.

[0180] The display panel 100 according to an embodiment of the present disclosure may include a pixel array portion disposed at a pixel region configured by a plurality of gate lines and / or a plurality of data lines. The pixel array portion may include a plurality of pixels that display an image based on signals provided through signal lines. The signal lines may include gate lines, data lines, pixel driving power supply lines, etc., but embodiments of the present disclosure are not limited thereto.

[0181] Each of the plurality of pixels may include a pixel circuit layer including a driving thin film transistor (TFT) disposed at the pixel region, an anode electrode electrically connected to the driving TFT, a light emitting device formed above the anode electrode, and a cathode electrode electrically connected to the light emitting device.

[0182] The driving TFT may be disposed at a transistor region of each pixel region disposed on a substrate. The driving TFT may include a gate electrode, a gate insulating layer, a semiconductor layer, a source electrode, and a drain electrode. The semiconductor layer of the driving TFT may include silicon such as amorphous silicon (a-Si), polycrystalline silicon (p-Si), or low-temperature poly-Si, or may include an oxide such as indium-gallium-zinc-oxide (IGZO), but embodiments of the present disclosure are not limited thereto.

[0183] The anode electrode may be disposed at an opening region disposed at each pixel region and may be electrically connected to the driving TFT.

[0184] The light-emitting device according to an embodiment may include an organic light-emitting device layer formed above the anode electrode. The organic light-emitting device layer may be configured to emit light of the same color (e.g., white light) for each pixel, or may be configured to emit light of different colors (e.g., red, green, or blue) for each pixel. The cathode electrode (or common electrode) may be commonly connected to the organic light-emitting device layer provided in each pixel region. For example, the organic light-emitting device layer may have a stacked structure that includes a single structure or two or more structures of the same color for each pixel. As another embodiment of the present disclosure, the organic light-emitting device layer may have a stacked structure that includes two or more structures that include one or more different colors for each pixel. The two or more structures including one or more different colors may be configured with one or more or a combination of blue, red, yellow-green, and green, but embodiments of the present disclosure are not limited thereto. Examples of the combination may include blue and red, red and yellow-green, red and green, red / yellow-green / green, etc., but embodiments of the present disclosure are not limited thereto. In addition, the present disclosure may be applied regardless of the stacking order. The stacked structure including two or more structures having the same color or one or more different colors may further include a charge generation layer between the two or more structures. The charge generation layer may have a PN junction structure and may include an N-type charge generation layer and a P-type charge generation layer.

[0185] The light-emitting device according to another embodiment of the present disclosure may include a micro light-emitting diode device electrically connected to each of the anode electrode and the cathode electrode. The micro light-emitting diode device may be a light-emitting diode implemented as an integrated circuit (IC) or a chip type. The micro light-emitting diode device may include a first terminal electrically connected to the anode electrode and a second terminal electrically connected to the cathode electrode. The cathode electrode may be commonly connected to the second terminal of the micro light-emitting diode device provided in each pixel region.

[0186] The encapsulation part may be formed on the substrate to surround the pixel array part, thereby preventing oxygen or moisture from penetrating into the light-emitting devices in the pixel array part. The encapsulation part according to an embodiment of the present disclosure may be formed as a multi-layer structure in which an organic material layer and an inorganic material layer are alternately stacked, but embodiments of the present disclosure are not limited thereto. The inorganic material layer may prevent oxygen or moisture from penetrating into the light-emitting devices in the pixel array part. The organic material layer may be formed to have a relatively thicker thickness than the thickness of the inorganic material layer to cover particles that occur in the manufacturing process. For example, the encapsulation part may include a first inorganic layer, an organic layer above the first inorganic layer, and a second inorganic layer above the organic layer. The organic layer may be a particle covering layer, but embodiments of the present invention are not limited thereto. The touch panel may be provided above the encapsulation part or may be provided at the rear surface of the pixel array part.

[0187] The display panel 100 according to an embodiment of the present disclosure may include a first substrate, a second substrate, and a liquid crystal layer. The first substrate may be an upper substrate or a thin film transistor (TFT) array substrate. For example, the first substrate may include a pixel array (or a display portion or a display area), and the pixel array (or the display portion or the display area) includes a plurality of pixels respectively disposed in a plurality of pixel regions defined by intersections between a plurality of gate lines and / or a plurality of data lines. Each pixel of the plurality of pixels may include a TFT connected to the gate line and / or the data line, a pixel electrode connected to the TFT, and a common electrode disposed adjacent to the pixel electrode and supplied with a common voltage.

[0188] The first substrate may further include a pad portion disposed at a first periphery (or a first non-display portion) and a gate driving circuit disposed at a second periphery (or a second non-display portion).

[0189] The pad portion may supply signals provided from the outside to the pixel array and / or the gate driving circuit. For example, the pad portion may include a plurality of data pads connected to the plurality of data lines through a plurality of data link lines and / or a plurality of gate input pads connected to the gate driving circuit through a gate control signal line. For example, the size of the first substrate may be larger than that of the second substrate, but embodiments of the present disclosure are not limited thereto.

[0190] The gate driving circuit according to an embodiment of the present disclosure may be embedded (or integrated) into the second periphery of the first substrate so as to be connected to a plurality of gate lines. For example, the gate driving circuit may be implemented with a shift register including transistors formed by the same process as the TFTs disposed in the pixel regions. The gate driving circuit according to another embodiment of the present disclosure may be implemented as an integrated circuit (IC) and may be disposed in a panel driving circuit without being embedded in the first substrate.

[0191] The second substrate may be a lower substrate or a color filter array substrate. For example, the second substrate may include pixels and a color filter layer, and the pixels include opening regions overlapping with the pixel regions formed in the first substrate, and the color filter layer is formed at the opening regions. The second substrate may have a size smaller than that of the first substrate, but embodiments of the present disclosure are not limited thereto. For example, the second substrate may overlap with the remaining portion of the upper substrate except for the first periphery. The second substrate may be attached to the remaining portion of the first substrate except for the first periphery using a sealant, and the liquid crystal layer is located between the second substrate and the first substrate.

[0192] The liquid crystal layer may be disposed between the first substrate and the second substrate. The liquid crystal layer may include a liquid crystal containing liquid crystal molecules, and the alignment 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.

[0193] The second polarization member may be attached to the lower surface of the second substrate and may polarize light incident from the backlight unit and traveling to the liquid crystal layer. The first polarization member may be attached to the upper surface of the first substrate and may polarize light passing through the first substrate and output to the outside.

[0194] The display panel 100 according to an embodiment of the present disclosure may 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, and thus, may display an image based on light passing through the liquid crystal layer.

[0195] In the display panel 100 according to another embodiment of the present disclosure, the first substrate may be implemented as a color filter array substrate, and the second substrate may be implemented as a TFT array substrate. For example, the display panel 100 according to another embodiment of the present disclosure may have a type in which the upper and lower portions of the display panel 100 are inverted therebetween. For example, the pad portion of the display panel 100 according to another embodiment of the present disclosure may be covered by a separate mechanism or structure.

[0196] The display panel 100 according to another embodiment of the present disclosure may include a bent portion that may be bent or curved to have a curved shape or a specific radius of curvature.

[0197] The bent portion of the display panel 100 may be on at least one of a pair of opposite peripheries of the display panel 100 that are parallel to each other. One periphery and / or the other periphery of the display panel 100 having the bent portion may include only the non-display area IA, or may include the periphery of the display area AA and the non-display area IA. The display panel 100 including the bent portion implemented by bending the non-display area IA may have a single-sided border bending structure or a double-sided border bending structure. In addition, the display panel 100 including the bent portion implemented by bending the periphery of the display area AA and the non-display area IA may have a single-sided active bending structure or a double-sided active bending structure.

[0198] The vibration device 200 may vibrate the display panel 100. For example, the vibration device 200 may be implemented at the rear surface of the display panel 100 to directly vibrate the display panel 100. For example, the vibration device 200 may vibrate the display panel 100 at the rear surface of the display panel 100 to provide sound and / or haptic feedback based on the vibration of the display panel 100 to a user (or viewer). For example, the vibration device 200 may be a vibration generating device, a displacement device, a sound device, or a sound generating device, but the embodiments of the present disclosure are not limited thereto.

[0199] According to an embodiment of the present disclosure, the vibration device 200 may vibrate in accordance with a voice signal synchronized with an image displayed on the display panel 100 to vibrate the display panel 100. As another embodiment of the present disclosure, the vibration device 200 may vibrate in accordance with a haptic feedback signal (or tactile feedback signal) synchronized with a user touch applied to a touch panel (or touch sensor layer) provided at or embedded in the display panel 100, and may vibrate the display panel 100. Accordingly, the display panel 100 may vibrate based on the vibration of the vibration device 200 to provide at least one or more of sound and haptic feedback to a user (or viewer).

[0200] The vibration device 200 according to an embodiment of the present disclosure may be implemented to have a size corresponding to the display area AA of the display panel 100. The size of the vibration device 200 may be 0.9 to 1.1 times the size of the display area AA, but embodiments of the present disclosure are not limited thereto. For example, the size of the vibration device 200 may be the same as or smaller than the size of the display area AA. For example, the size of the vibration device 200 may be the same as or approximately the same as the display area AA of the display panel 100. Accordingly, the vibration device 200 may cover most of the display panel 100, and the vibration generated by the vibration device 200 may vibrate the entire portion of the display panel 100. Accordingly, the localization of sound may be high, and user satisfaction may be improved. In addition, the contact area (or panel coverage) between the display panel 100 and the vibration device 200 may be increased, so that the vibration area of the display panel 100 may be increased, thereby improving the sound of the mid- and low-pitched vocal cords generated based on the vibration of the display panel 100. In addition, the vibration device 200 applied to a large-sized display device may vibrate the entire display panel 100 having a large size (or large area). Accordingly, the localization of the sound based on the vibration of the display panel 100 may be further enhanced, thereby achieving an improved sound effect. Accordingly, the vibration device 200 according to an embodiment of the present disclosure may be provided at the rear surface of the display panel 100 to vibrate the display panel 100 sufficiently in the vertical (or front-rear) direction to output desired sound to a forward area in front of the device or the display device. For example, the vibration device 200 according to an embodiment of the present disclosure may be provided at the rear surface of the display panel 100 to vibrate the display panel 100 sufficiently in the vertical (or front-rear) direction with respect to a first direction (X) of the display panel 100 to output desired sound to a forward area in front of the device or the display device.

[0201] The vibration device 200 may include a vibration generator 210 disposed at or connected to the rear surface (or back surface) of the display panel 100. The vibration device 200 according to an embodiment of the present disclosure may be implemented as a film type. Since the vibration device 200 may be implemented as a film type, the vibration device 200 may have a thickness thinner than that of the display panel 100. Therefore, the thickness of the display device does not increase due to the arrangement of the vibration device 200. For example, the vibration device 200 may be referred to as a sound generation module, a sound generation device, a membrane actuator, a film type piezoelectric composite actuator, a film speaker, a film type piezoelectric speaker, a film type piezoelectric composite speaker, etc. that uses the display panel 100 as a vibration plate, but the embodiments of the present disclosure are not limited thereto. As another embodiment of the present disclosure, the vibration device 200 may not be disposed at the rear surface of the display panel 100, but may be applied to a non-display panel instead of the display panel. For example, the non-display panel may be one or more of wood, plastic, glass, cloth, paper, vehicle interior materials, building interior ceilings, aircraft interior materials, etc., but the embodiments of the present disclosure are not limited thereto. In this case, the non-display panel may be applied as a vibration plate, and the vibration device 200 may vibrate the non-display panel to output sound.

[0202] For example, a device according to an embodiment of the present disclosure may include a vibration member (or a vibrating object) and a vibration device 200 provided at the vibration member. For example, the vibration member may include a display panel including pixels configured to display an image, or may include a non-display panel. For example, the vibration member may include a display panel including pixels configured to display an image, or may include one or more of wood, plastic, glass, cloth, paper, vehicle interior material, vehicle glass window, building interior ceiling, building glass window, building interior material, aircraft interior material, aircraft glass window, but embodiments of the present disclosure are not limited thereto. For example, the vibration member may include one or more of the following: a display panel including pixels configured to display an image, a screen panel onto which an image is projected from a display device, a lighting panel, a sign panel, vehicle interior material, vehicle glass window, vehicle exterior material, building ceiling material, building interior material, building glass window, aircraft interior material, aircraft glass window, and a mirror, but embodiments of the present disclosure are not limited thereto. For example, the non-display panel may be a light-emitting diode lighting panel (or device), an organic light-emitting lighting panel (or device), an inorganic light-emitting lighting panel (or device), etc., but embodiments of the present disclosure are not limited thereto. For example, the vibration member may include a display panel including pixels configured to display an image, or may include one or more of a light-emitting diode lighting panel (or device), an organic light-emitting lighting panel (or device), an inorganic light-emitting lighting panel (or device), but embodiments of the present disclosure are not limited thereto.

[0203] According to another embodiment of the present disclosure, the vibration member may include a plate, and the plate may include a metal material, or may include one or more single non-metal materials or composite non-metal materials of wood, plastic, glass, cloth, paper, and leather. However, embodiments of the present disclosure are not limited thereto. According to another embodiment of the present disclosure, the vibration member may include one or more of wood, plastic, glass, cloth, paper, and leather, but embodiments of the present disclosure are not limited thereto. For example, the paper may be a cone (or paper cone) for a speaker. For example, the cone may be formed of pulp or foam plastic, but embodiments of the present disclosure are not limited thereto. For example, the vibration member may be a vibrating object, a vibrating plate, or a front member, but embodiments of the present disclosure are not limited thereto.

[0204] The vibration generator 210 may be provided at the rear surface of the display panel 100 to overlap with the display area of the display panel 100. For example, the vibration generator 210 may overlap with half or more of the display area of the display panel 100. As another embodiment of the present disclosure, the vibration generator 210 may overlap with the entire display area of the display panel 100.

[0205] When an alternating current (AC) voltage is applied, the vibration generator 210 according to an embodiment of the present disclosure may vibrate by alternately and repeatedly contracting and expanding based on the inverse piezoelectric effect, so as to directly vibrate the display panel 100 through its vibration. For example, the vibration generator 210 may vibrate according to a voice signal synchronized with the image displayed on the display panel 100 to vibrate the display panel 100. As another embodiment of the present disclosure, the vibration generator 210 may vibrate according to a haptic feedback signal (or tactile feedback signal) synchronized with a user touch applied to a touch panel (or touch sensor layer) disposed above or embedded in the display panel 100, and may vibrate the display panel 100. Therefore, the display panel 100 may vibrate based on the vibration of the vibration generator 210 to provide at least one or more of sound and haptic feedback to a user (or viewer).

[0206] Therefore, the device according to an embodiment of the present disclosure may output sound in a forward area in front of the display panel, and the sound is generated by the vibration of the display panel 100 based on the vibration of the vibration generator 210. In addition, in the device according to an embodiment of the present disclosure, most areas of the display panel 100 may be vibrated by the vibration generator 210 having a film type, thereby further enhancing the localization sense and sound pressure level characteristics of the sound based on the vibration of the display panel 100.

[0207] The device according to an embodiment of the present disclosure may further include a connection member (or first connection member) 150 disposed between the display panel 100 and the vibration device 200.

[0208] According to an embodiment of the present disclosure, the connection member 150 may be disposed between the display panel 100 and the vibration device 200, and may connect or couple the vibration device 200 to the rear surface of the display panel 100. For example, the vibration device 200 may be connected or coupled to the rear surface of the display panel 100 through the connection member 150. Therefore, the vibration device 200 may be supported by the rear surface of the display panel 100 or disposed at the rear surface of the display panel 100. For example, the vibration generator 210 may be disposed at the rear surface of the display panel 100 through the connection member 150.

[0209] The connection member 150 according to an embodiment of the present disclosure may include a material including an adhesive layer, which has good adhesion or adhesiveness to each of the rear surfaces of the display panel 100 and the vibration device 200. For example, the connection member 150 may include a foam pad, a double-sided tape, an adhesive, etc., but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the connection member 150 may include an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane, but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the adhesive member 250 may include an acrylic-based material, which is relatively better in terms of adhesiveness and hardness between the acrylic resin and the polyurethane. Therefore, the vibration of the vibration device 200 can be well transmitted to the display panel 100.

[0210] The adhesive layer of the connection member 150 may further include additives, such as tackifiers or adhesion enhancers, wax components, antioxidants, etc. The additives may prevent or reduce the separation (peeling) of the connection member 150 from the display panel 100 due to the vibration of the vibration device 200. For example, the tackifier may be a rosin derivative, etc., and the wax component may be paraffin, etc. For example, the antioxidant may be a phenol-based antioxidant, such as a thioester, but the embodiments of the present disclosure are not limited thereto.

[0211] The connection member 150 according to another embodiment of the present disclosure may further include a hollow portion between the display panel 100 and the vibration device 200. The hollow portion of the connection member 150 may provide an air gap between the display panel 100 and the vibration device 200. Due to the air gap, the sound wave (or sound pressure) based on the vibration of the vibration device 200 may not be dispersed by the connection member 150 and may be concentrated on the display panel 100. Therefore, the loss of vibration caused by the connection member 150 can be minimized, thereby increasing the sound characteristics and / or sound pressure characteristics of the sound generated based on the vibration of the display panel 100.

[0212] The device according to an embodiment of the present disclosure may further include a support member 300 disposed at the rear surface of the display panel 100.

[0213] The support member 300 may cover the rear surface of the display panel 100. For example, the support member 300 may cover the entire rear surface of the display panel 100 with a gap space GS therebetween. For example, the support member 300 may include at least one or more of a glass material, a metal material, and a plastic material. For example, the support member 300 may be a rear surface structure, a support structure, a support cover, a rear member, a housing, a case, or a group structure, but the embodiments of the present disclosure are not limited thereto. For example, the support member 300 may be referred to by other terms, such as a bottom cover, a bottom plate, a rear cover, a base frame, a metal frame, a metal chassis, a chassis base, or an m-chassis. For example, the support member 300 may be implemented as any type of frame or plate-like structure provided at the rear surface of the display panel 100.

[0214] The perimeter or sharp corners of the support member 300 may have an inclined shape or a curved shape by a chamfering process or a corner rounding process. For example, the support member 300 made of a glass material may be sapphire glass. As another embodiment of the present disclosure, the support member 300 made of a metal material may include one or more of aluminum (Al), an Al alloy, magnesium (Mg), a magnesium (Mg) alloy, and an iron (Fe)-nickel (Ni) alloy.

[0215] The support member 300 according to an embodiment of the present disclosure may include a first support member 310 and a second support member 330.

[0216] The first support member 310 may cover the rear surface of the display panel 100. For example, the first support member 310 may cover the entire rear surface of the first support member 310. For example, the first support member 310 may be a member that covers the entire rear surface of the first support member 310. For example, the first support member 310 may include one or more materials of a glass material, a metal material, and a plastic material. For example, the first support member 310 may be a first rear structure, a first support structure, a first support cover, a first rear cover, a first rear member, an inner plate, or an internal plate, but the embodiments of the present disclosure are not limited thereto.

[0217] The first support member 310 may be spaced apart from the rearmost surface of the display panel 100 with a gap space GS therebetween. For example, the gap space GS may be referred to as an air gap, a vibration space, a sound resonance box, etc., but the embodiments of the present disclosure are not limited thereto.

[0218] The second support member 330 may be disposed at the rear surface of the first support member 310. The second support member 330 may be a plate-like member that covers the entire rear surface of the first support member 310. For example, the second support member 330 may include at least one or more of a glass material, a metal material, and a plastic material. For example, the second support member 330 may be a second rear structure, a second support structure, a second support cover, a second rear cover, a second rear member, an outer plate, an exterior plate, a rear plate, a back plate, or a rear cover, but embodiments of the present disclosure are not limited thereto.

[0219] The support member 300 according to an embodiment of the present disclosure may further include a connection member (or a second connection member) 350.

[0220] The connection member 350 may be disposed between the first support member 310 and the second support member 330. For example, the first support member 310 and the second support member 330 may be coupled or connected to each other by the connection member 350. For example, the connection member 350 may be an adhesive resin, a double-sided tape, or a double-sided adhesive foam pad, but embodiments of the present disclosure are not limited thereto. For example, the connection member 350 may have elasticity for absorbing shock, but embodiments of the present disclosure are not limited thereto. For example, the connection member 350 may be disposed at the entire area between the first support member 310 and the second support member 330. As another embodiment of the present disclosure, the connection member 350 may be disposed between the first support member 310 and the second support member 330 in a mesh structure including an air gap.

[0221] The device according to an embodiment of the present disclosure may further include an intermediate frame 400. The intermediate frame 400 may be disposed between the rear periphery of the display panel 100 and the front periphery of the support member 300. The intermediate frame 400 may support at least one or more of the rear periphery of the display panel 100 and the front periphery of the support member 300. The intermediate frame 400 may surround one or more side surfaces of each of the display panel 100 and the support member 300. The intermediate frame 400 may provide a clearance space GS between the display panel 100 and the support member 300. The intermediate frame 400 may be referred to as a connection member, a frame, a frame member, an intermediate member, a side cover member, an intermediate housing, an intermediate cover, an intermediate chassis, etc., but embodiments of the present disclosure are not limited thereto.

[0222] The intermediate frame 400 according to an embodiment of the present disclosure may include a first support portion 410 and a second support portion 430. For example, the first support portion 410 may be a support portion, but embodiments of the present disclosure are not limited thereto. For example, the second support portion 430 may be a side wall portion, but embodiments of the present disclosure are not limited thereto.

[0223] The first support part 410 can be disposed between the rear periphery of the display panel 100 and the front periphery of the support member 300, so as to provide a clearance space GS between the display panel 100 and the support member 300. The front surface of the first support part 410 can be coupled or connected to the rear periphery of the display panel 100 through a first frame connection member 401. The rear surface of the first support part 410 can be coupled or connected to the front periphery of the support member 300 through a second frame connection member 403. For example, the first support part 410 can have a single picture frame structure including a square shape or a frame structure including a plurality of divided strip shapes, but the embodiments of the present disclosure are not limited thereto.

[0224] The second support part 430 can be disposed parallel to the thickness direction Z of the device. For example, the second support part 430 can be vertically coupled to the outer surface of the first support part 410 parallel to the thickness direction Z of the device. The second support part 430 can surround one or more of the outer surface of the display panel 100 and the outer surface of the support member 300, so as to protect the outer surfaces of each of the display panel 100 and the support member 300. The first support part 410 can protrude from the inner surface of the second support part 430 toward the clearance space GS between the display panel 100 and the support member 300.

[0225] The device according to an embodiment of the present disclosure can include a panel connection member instead of the intermediate frame 400.

[0226] The panel connection member can be disposed between the rear periphery of the display panel 100 and the front periphery of the support member 300, and can provide a clearance space GS between the display panel 100 and the support member 300. The panel connection member can be disposed between the rear periphery of the display panel 100 and the front periphery of the support member 300 to bond the display panel 100 and the support member 300. For example, the panel connection member can be a double-sided tape, a single-sided tape, or a double-sided adhesive foam pad, but the embodiments of the present disclosure are not limited thereto. For example, the panel connection member can include an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane, but the embodiments of the present disclosure are not limited thereto. For example, in order to minimize the vibration of the display panel 100 transmitted to the support member 300, the adhesive layer of the panel connection member can include a polyurethane-based material, which has relatively ductile characteristics compared with the acrylic acid in the acrylic resin and the polyurethane. Therefore, the vibration of the display panel 100 transmitted to the support member 300 can be minimized.

[0227] In a device according to an embodiment of the present disclosure, when the device includes a panel connection member instead of the intermediate frame 400, the support member 300 may include a bent sidewall that bends from an end (or ends) of the second support member 330 and surrounds one or more of the outer surfaces (or outer sidewalls) of each of the first support member 310, the panel connection member, and the display panel 100. The bent sidewall according to an embodiment of the present disclosure may have a single sidewall structure or a hemming structure. The hemming structure may be a structure in which ends of any member are bent into a bent shape and overlap each other or are separated from each other in parallel. For example, in order to enhance the design aesthetic, the bent sidewall may include a first bent sidewall that bends from one side of the second support member 330 and a second bent sidewall that bends from the first bent sidewall to an area between the first bent sidewall and the outer surface of the display panel 100. The second bent sidewall may be separated from the inner surface of the first bent sidewall. Accordingly, the second bent sidewall may prevent the outer surface of the display panel 100 from contacting the inner surface of the first bent sidewall, or may prevent an external impact in the lateral direction from being transmitted to the outer surface of the display panel 100.

[0228] According to another embodiment of the present disclosure, the intermediate frame 400 may be omitted. A device according to another embodiment of the present disclosure may include a panel connection member or an adhesive member instead of the intermediate frame 400. A device according to another embodiment of the present disclosure may include a separator instead of the intermediate frame 400.

[0229] Figure 3 A vibration device according to an embodiment of the present disclosure is shown. Figure 4 is a cross-sectional view taken along Figure 3 line II-II' shown in

[0230] Referring to Figures 2 to 4 , a vibration device 200 according to an embodiment of the present disclosure may include a vibration generator 210.

[0231] The vibration generator 210 according to an embodiment of the present disclosure may include a plurality of vibration structures 210A to 210D, which are electrically disconnected from each other and arranged at intervals in a first direction X (or width direction) and a second direction Y (or length direction) intersecting the first direction X. Each of the plurality of vibration structures 210A to 210D may alternately and / or repeatedly contract and expand based on the piezoelectric effect (or piezoelectric property), thereby vibrating. The vibration generator 210 according to an embodiment of the present disclosure may alternately and / or repeatedly contract and expand based on the inverse piezoelectric effect (or piezoelectric property) to vibrate in the thickness direction Z, thereby directly vibrating the display panel 100. The vibration generator 210 may include a plurality of vibration structures 210A to 210D arranged or tiled at regular intervals. For example, each of the plurality of vibration structures 210A to 210D may be a vibration array, a vibration generation array, a partitioned vibration array, a partial vibration array, a partitioned vibration structure, a partial vibration structure, a single vibration structure, a vibration module, a partial vibration module array, a vibration array structure, a vibration film, a shift generator, a vibration layer, a shift structure, a sound generation structure, a sound generator, a tiled vibration array, a tiled vibration array module, or a tiled vibration film, but the embodiments of the present disclosure are not limited thereto. The vibration generator 210 may be referred to as a vibration film, a shift generator, a shift film, a shift structure, a sound generation structure, a sound generator, a tiled vibration array, a tiled vibration array module, or a tiled vibration film, but the embodiments of the present disclosure are not limited thereto.

[0232] Each of the plurality of vibration structures 210A to 210D according to an embodiment of the present disclosure may have a quadrangular shape or a square shape. For example, each of the plurality of vibration structures 210A to 210D may have a quadrangular shape with a width of about 5 cm or more. For example, each of the plurality of vibration structures 210A to 210D may have a square shape with a size of 5 cm × 5 cm or more.

[0233] The plurality of vibration structures 210A to 210D may be arranged or tiled in an i×j form on the same plane. Therefore, the vibration generator 210 may have an enlarged area based on the tiling of the plurality of vibration structures 210A to 210D having relatively small sizes. For example, i may be the number of vibration structures arranged in the first direction X, or may be a natural number of 2 or more, and j may be the number of vibration structures arranged in the second direction Y, or may be a natural number of 1 or more that is the same as or different from i.

[0234] A plurality of vibration structures 210A to 210D may be arranged or tiled at a certain interval (or distance), and thus, may be implemented as one vibration device (or a single vibration device), which is driven as a complete single body without being independently driven. According to an embodiment of the present disclosure, with respect to the first direction X, the first interval distance D1 between the plurality of vibration structures 210A to 210D may be 0.1 mm or more and less than 3 cm, but the embodiments of the present disclosure are not limited thereto. In addition, with respect to the second direction Y, the second interval distance D2 between the plurality of vibration structures 210A to 210D may be 0.1 mm or more and less than 3 cm, but the embodiments of the present disclosure are not limited thereto. For example, the first separation distance D1 may be the same as the second separation distance D2. For example, within the process error range, the first separation distance D1 may be the same as the second separation distance D2.

[0235] According to an embodiment of the present disclosure, the plurality of vibration structures 210A to 210D may be arranged or tiled to have an interval distance (or interval) D1 and D2 of 0.1 mm or more and less than 3 cm, and thus, may be driven as one vibration device. Therefore, the reproduction frequency band and sound pressure level characteristics of the sound generated based on the single vibration of the plurality of vibration structures 210A to 210D may be increased. For example, the plurality of vibration structures 210A to 201D may be arranged at an interval of 0.1 mm or more and less than 5 mm to increase the reproduction frequency band of the sound generated based on the single vibration of the plurality of vibration structures 210A to 210D and increase the sound of the low-pitched vocal cords (e.g., the sound pressure level characteristics in 500 Hz or lower).

[0236] According to an embodiment of the present disclosure, in the case where the plurality of vibration structures 210A to 210D are arranged at an interval D1 and D2 of less than 0.1 mm or are arranged without an interval D1 and D2, the reliability of the vibration structures 210A to 210D or the vibration generator 210 may be reduced due to damage or cracks caused by physical contact therebetween when each of the vibration structures 210A to 210D vibrates.

[0237] According to an embodiment of the present disclosure, in the case where the plurality of vibration structures 210A to 210D are arranged at an interval D1 and D2 of 3 cm or more, due to the independent vibration of each of the plurality of vibration structures 210A to 210D, the plurality of vibration structures 210A to 210D may not be driven as one vibration device. Therefore, the reproduction frequency band and sound pressure level characteristics of the sound generated based on the vibration of the plurality of vibration structures 210A to 210D may be reduced. For example, in the case where the plurality of vibration structures 210A to 210D are arranged at an interval D1 and D2 of more than 3 cm, the sound characteristics and sound pressure level characteristics of the low-pitched vocal cords (e.g., 500 Hz or less) may be reduced respectively.

[0238] According to an embodiment of the present disclosure, when the plurality of vibration structures 210A to 210D are arranged at intervals of 5 mm, each of the plurality of vibration structures 210A to 210D may not be perfectly driven as a vibration device. Therefore, each of the sound characteristic and the sound pressure level characteristic of the low-pitched sound band (e.g., 200 Hz or less) may be reduced.

[0239] According to another embodiment of the present disclosure, when the plurality of vibration structures 210A to 210D are arranged at intervals of 1 mm, each of the plurality of vibration structures 210A to 210D can be driven as a vibration device. Therefore, the reproduction frequency band of the sound can be increased and the sound of the low-pitched sound band (e.g., the sound pressure level characteristic of 500 Hz or less) can be increased. For example, when the plurality of vibration structures 210A to 210D are arranged at intervals of 1 mm, the vibration generator 210 can be implemented as a large-area vibrator amplified based on the optimization of the interval distance between the plurality of vibration structures 210A to 210D. Therefore, the vibration generator 210 can be driven as a large-area vibrator based on the single vibration of the plurality of vibration structures 210A to 210D. Therefore, the sound characteristics and the sound pressure level characteristics in the low-pitched sound band and the reproduction frequency band of the sound generated based on the large-area vibration of the vibration generator 210 can be increased respectively.

[0240] Therefore, in order to achieve the single vibration (or one vibration device) of the plurality of vibration structures 210A to 210D, the interval distance between the plurality of vibration structures 210A to 210D can be adjusted to be 0.1 mm or more and less than 3 cm. In addition, in order to achieve the single vibration (or one vibration device) of the plurality of vibration structures 210A to 210D and increase the sound pressure level characteristic of the sound of the low-pitched sound band, the interval distance between the plurality of vibration structures 210A to 210D can be adjusted to be 0.1 mm or more and less than 5 mm.

[0241] The vibration generator 210 according to an embodiment of the present disclosure may include a first vibration structure 210A to a fourth vibration structure 210D, which are electrically disconnected from each other and are arranged at intervals of each other in each of the first direction X and the second direction Y. For example, the first to fourth vibration structures 210A to 210D may be arranged or tiled in a 2×2 form.

[0242] According to an embodiment of the present disclosure, the first vibration structure 210A and the second vibration structure 210B may be separated from each other along the first direction X. The third vibration structure 210C and the fourth vibration structure 210D may be spaced apart from each other in the first direction X and may be spaced apart from each of the first vibration structure 210A and the second vibration structure 210B in the second direction Y. The first vibration structure 210A and the third vibration structure 210C may be spaced apart from each other in the second direction Y to face each other. The second vibration structure 210B and the fourth vibration structure 210D may be spaced apart from each other in the second direction Y to face each other.

[0243] According to an embodiment of the present disclosure, the first vibration structure 210A to the fourth vibration structure 210D may be arranged (or tiled) at intervals D1 and D2 of 0.1 mm or more and less than 3 cm in each of the first direction X and the second direction Y, or may be arranged (or tiled) at an interval of 0.1 mm or more and less than 5 mm, such that the first vibration structure 210A to the fourth vibration structure 210D are driven as a vibration device, or are driven for single vibration or vibrations of a large-area vibrator of the vibration device 200.

[0244] Each of the first vibration structure 210A to the fourth vibration structure 210D according to an embodiment of the present disclosure may include a vibration part 211, a first electrode layer E1, and a second electrode layer E2.

[0245] The vibration part 211 may include a piezoelectric material, a composite piezoelectric material, or an electroactive material, and the piezoelectric material, the composite piezoelectric material, and the electroactive material may have a piezoelectric effect. The vibration part 211 may include an inorganic material and an organic material. For example, the vibration part 211 may include a plurality of inorganic material parts configured as piezoelectric materials and at least one organic material part configured as a flexible material. For example, the vibration part 211 may be referred to as a piezoelectric vibration part, a piezoelectric vibration layer, a piezoelectric displacement part, a piezoelectric displacement layer, an acoustic wave generation part, an acoustic wave generation layer, a piezoelectric composite layer, a piezoelectric composite, or a piezoelectric ceramic composite, but the embodiments of the present disclosure are not limited thereto. The vibration part 211 may be formed of a transparent, translucent, or opaque piezoelectric material, and the vibration part 211 may be transparent, translucent, or opaque.

[0246] The vibration part 211 according to an embodiment of the present disclosure may include a ceramic-based material capable of achieving relatively high vibrations. For example, the vibration part 211 may include a 1-3 composite structure or a 2-2 composite structure. For example, the piezoelectric deformation coefficient “d33” of the vibration part 211 in the thickness direction Z may be 1000 pC / N or more, but the embodiments of the present disclosure are not limited thereto.

[0247] The first electrode layer E1 may be disposed at the first surface (or upper surface) of the vibrating portion 211 and may be electrically connected to the first surface of the vibrating portion 211. For example, the first electrode layer E1 may have a monomer electrode type (or common electrode type) disposed at the entire first surface of the vibrating portion 211. The first electrode layer E1 according to an embodiment of the present disclosure may include a transparent conductive material, a translucent conductive material, or an opaque conductive material. For example, examples of the transparent conductive material or the translucent conductive material may include indium tin oxide (ITO) or indium zinc oxide (IZO), but embodiments of the present disclosure are not limited thereto. The opaque conductive material may include aluminum (Al), copper (Cu), gold (Au), silver (Ag), molybdenum (Mo), magnesium (Mg), etc. and alloys thereof, but embodiments of the present disclosure are not limited thereto.

[0248] The second electrode layer E2 may be at the second surface (or rear surface) of the vibrating portion 211 opposite to the first surface and may be electrically connected to the second surface of the vibrating portion 211. For example, the second electrode layer E2 may have a monomer electrode type (or common electrode type) disposed at the entire second surface of the vibrating portion 211. The second electrode layer E2 according to an embodiment of the present disclosure may include a transparent conductive material, a translucent 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 embodiments of the present disclosure are not limited thereto. As another embodiment of the present disclosure, the second electrode layer E2 may include a material different from the first electrode layer E1.

[0249] The vibrating portion 211 may be polarized by a specific voltage applied to the first electrode layer E1 and the second electrode layer E2 in a specific temperature atmosphere or in a temperature atmosphere that can change from a high temperature to room temperature, but embodiments of the present disclosure are not limited thereto.

[0250] The vibration generator 210 according to an embodiment of the present disclosure may further include a first protection member 213 and a second protection member 215.

[0251] The first protection member 213 may be disposed at the first surface of the vibration generator 210. For example, the first protection member 213 may cover the first electrode layer E1 disposed at the first surface of each of the plurality of vibration structures 210A to 210D. Therefore, it may be commonly connected to the first surface of each of the plurality of vibration structures 210A to 210D, or may commonly support the first surface of each of the plurality of vibration structures 210A to 210D. Therefore, the first protection member 213 may protect the first surface of each of the plurality of vibration structures 210A to 210D or may protect the first electrode layer E1.

[0252] The first protective member 213 may be disposed at the first surface of each of the plurality of vibration structures 210A to 210D through the first adhesive layer 212. For example, the first protective member 213 may be directly disposed at the first surface of each of the plurality of vibration structures 210A to 210D through a film lamination process using the first adhesive layer 212. Accordingly, the plurality of vibration structures 210A to 210D may be integrated (or disposed) or tiled with the first protective member 213 to have specific intervals D1 and D2.

[0253] The second protective member 215 may be disposed at the second surface of the vibration generator 210. For example, the second protective member 215 may cover the second electrode layer E2 disposed at the second surface of each of the plurality of vibration structures 210A to 210D. Accordingly, the second protective member 1215 may be commonly connected to the second surface of each of the plurality of vibration structures 210A to 210D, or may commonly support the second surface of each of the plurality of vibration structures 210A to 210D. Thus, the second protective member 215 may protect the second surface of each of the plurality of vibration structures 210A to 210D or may protect the second electrode layer E2.

[0254] The second protective member 215 may be disposed at the second surface of each of the plurality of vibration structures 210A to 210D through the second adhesive layer 214. For example, the second protective member 215 may be directly disposed at the second surface of each of the plurality of vibration structures 210A to 210D through a film lamination process using the second adhesive layer 214. Accordingly, the plurality of vibration structures 210A to 210D may be integrated (or disposed) or tiled with the second protective member 215 to have specific intervals D1 and D2.

[0255] Each of the first protective member 213 and the second protective member 215 according to an embodiment of the present disclosure may include a plastic film. For example, each of the first protective member 213 and the second protective member 215 may be a polyimide (PI) film or a polyethylene terephthalate (PET) film, but embodiments of the present disclosure are not limited thereto.

[0256] The first adhesive layer 212 may be disposed between the first surfaces of each of the plurality of vibration structures 210A to 210D and between the plurality of vibration structures 210A to 210D. For example, the first adhesive layer 212 may be formed at the rear surface (or inner surface) of the first surface of the first protective member 213 facing the vibration generator 210, disposed at the first surface of each of the plurality of vibration structures 210A to 210D, and filled between the plurality of vibration structures 210A to 210D.

[0257] The second adhesive layer 214 may be disposed between second surfaces of each of the plurality of vibration structures 210A to 210D and between the plurality of vibration structures 210A to 210D. For example, the second adhesive layer 214 may be formed at a front surface (or inner surface) of the second protective member 215 facing the second surface of the vibration generator 210, disposed at the second surface of each of the plurality of vibration structures 210A to 210D, and filled between the plurality of vibration structures 210A to 210D.

[0258] The first adhesive layer 212 and the second adhesive layer 214 may be connected to each other between the plurality of vibration structures 210A to 210D. Accordingly, each of the plurality of vibration structures 210A to 210D may be surrounded by the first adhesive layer 212 and the second adhesive layer 214. For example, the first adhesive layer 212 and the second adhesive layer 214 may completely surround all of the plurality of vibration structures 210A to 210D. For example, the plurality of vibration structures 210A to 210D may be embedded between the first adhesive layer 212 and the second adhesive layer 214. For example, the first adhesive layer 212 and the second adhesive layer 214 may be referred to as a cover member, but embodiments of the present disclosure are not limited thereto. When both the first adhesive layer 212 and the second adhesive layer 214 are cover members, the first protective member 213 may be disposed at a first surface of the cover member, and the second protective member 215 may be disposed at a second surface of the cover member. For example, for ease of description, the first adhesive layer 212 and the second adhesive layer 214 are shown as the first adhesive layer 212 and the second adhesive layer 214, but embodiments of the present disclosure are not limited thereto, and may be provided as one adhesive layer.

[0259] Each of the first adhesive layer 212 and the second adhesive layer 214 according to an embodiment of the present disclosure may include an electrically insulating material having adhesiveness and may include a material capable of being compressed and decompressed. For example, each of the first adhesive layer 212 and the second adhesive layer 214 may include an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane resin, but embodiments of the present disclosure are not limited thereto.

[0260] The vibration device 200 or the vibration generator 210 according to an embodiment of the present disclosure may further include a first power line PL1, a second power line PL2, and a pad portion 201.

[0261] The first power line PL1 may be disposed at the first protective member 213. For example, the first power line PL1 may be disposed at the rear surface of the first protective member 213 facing the first surface of the vibration generator 210. The first power line PL1 may be electrically connected to the first electrode layer E1 of each of the plurality of vibration structures 210A to 210D. For example, the first power line PL1 may be directly electrically connected to the first electrode layer E1 of each of the plurality of vibration structures 210A to 210D. For example, the first power line PL1 may be electrically connected to the first electrode layer E1 of each of the plurality of vibration structures 210A to 210D through an anisotropic conductive film. As another embodiment of the present disclosure, the first power line PL1 may be electrically connected to the first electrode layer E1 of each of the plurality of vibration structures 210A to 210D through a conductive material (or particles) included in the first adhesive layer 212.

[0262] The first power line PL1 according to an embodiment of the present disclosure may include a first upper power line 213a and a second upper power line 213b disposed in the second direction Y. For example, the first upper power line 213a may be electrically connected to the first electrode layer E1 of each of the first vibration structure 210A and the third vibration structure 210C (or the first group) parallel to the second direction Y among the plurality of vibration structures 210A to 210D. The second upper power line 213b may be electrically connected to the first electrode layer E1 of each of the second vibration structure 210B and the fourth vibration structure 210D (or the second group) parallel to the second direction Y among the plurality of vibration structures 210A to 210D.

[0263] The second power line PL2 may be disposed at the second protective member 215. For example, the second power line PL2 may be disposed at the front surface of the second protective member 215 facing the second surface of the vibration generator 210. The second power line PL2 may be electrically connected to the second electrode layer E2 of each of the plurality of vibration structures 210A to 210D. For example, the second power line PL2 may be directly electrically connected to the second electrode layer E2 of each of the plurality of vibration structures 210A to 210D. For example, the second power line PL2 may be electrically connected to the second electrode layer E2 of each of the plurality of vibration structures 210A to 210D through an anisotropic conductive film. As another embodiment of the present disclosure, the second power line PL2 may be electrically connected to the second electrode layer E2 of each of the plurality of vibration structures 210A to 210D through a conductive material (or particles) included in the second adhesive layer 214.

[0264] According to an embodiment of the present disclosure, the second power line PL2 may include a first lower power line 215a and a second lower power line 215b disposed in the second direction Y. For example, the first lower power line 215a may be electrically connected to the second electrode layer E2 of each of the first vibration structure 210A and the third vibration structure 210C (or the first group) parallel to the second direction Y among the plurality of vibration structures 210A to 210D. The second lower power line 215b may be electrically connected to the second electrode layer E2 of each of the second vibration structure 210B and the fourth vibration structure 210D (or the second group) parallel to the second direction Y among the plurality of vibration structures 210A to 210D.

[0265] The pad portion 201 may be electrically connected to each of the first power line PL1 and the second power line PL2. The pad portion 201 may be disposed in the vibration generator 210 so as to be electrically connected to a part (or one end or one side) of each of the first power line PL1 and the second power line PL2. The pad portion 201 according to an embodiment of the present disclosure may include a first pad electrode and a second pad electrode. The first pad electrode may be electrically connected to a part of the first power line PL1. The second pad electrode may be electrically connected to a part of the second power line PL2.

[0266] The first pad electrode may be commonly connected to a part of each of the first upper power line 213a and the second upper power line 213b of the first power line PL1. For example, a part of each of the first upper power line 213a and the second upper power line 213b may branch from the first pad electrode.

[0267] The second pad electrode may be commonly connected to a part of each of the first lower power line 215a and the second lower power line 215b of the second power line PL2. For example, a part of each of the first lower power line 215a and the second lower power line 215b may branch from the second pad electrode.

[0268] The vibration device 200 or the vibration generator 210 according to an embodiment of the present disclosure may further include a flexible cable 220.

[0269] The flexible cable 220 may be electrically connected to the pad portion 201 disposed in the vibration generator 210, and may supply a vibration driving signal (or a sound signal) provided from the sound processing circuit to the vibration generator 210. The flexible cable 220 according to an embodiment of the present disclosure may include a first terminal and a second terminal. The first terminal may be electrically connected to the first pad electrode of the pad portion 201. The second terminal may be electrically connected to the second pad electrode of the pad portion 201. For example, the flexible cable 220 may be a flexible printed circuit cable or a flexible flat cable, but the embodiments of the present disclosure are not limited thereto.

[0270] The sound processing circuit may generate an alternating current (AC) vibration driving signal including a first vibration driving signal and a second vibration driving signal based on a sound source. The first vibration driving signal may be either a positive (+) vibration driving signal or a negative (-) vibration driving signal, and the second vibration driving signal may be either a positive (+) vibration driving signal or a negative (-) vibration driving signal. For example, the first vibration driving signal may be provided to the first electrode layer E1 of each of the plurality of vibration structures 210A to 210D through the first terminal of the flexible cable 220, the first pad electrode of the pad portion 201, and the first power line PL1. The second vibration driving signal may be provided to the second electrode layer E2 of each of the plurality of vibration structures 210A to 210D through the second terminal of the flexible cable 220, the second pad electrode of the pad portion 201, and the second power line PL2.

[0271] The vibration generator 210 according to an embodiment of the present disclosure may further include a plate 216.

[0272] The plate 216 may be disposed at the first protection member 213 or the second protection member 215. For example, the plate 216 may have the same shape as the first protection member 213 (or the second protection member 215). The plate 216 may have a size greater than or equal to that of the first protection member 213 (or the second protection member 215). The plate 216 according to an embodiment of the present disclosure may include a metallic material, and for example, may include one or more materials among stainless steel, aluminum (Al), magnesium (Mg), magnesium alloy, magnesium-lithium (Mg-Li) alloy, and aluminum alloy, but the embodiments of the present disclosure are not limited thereto. The plate 216 may be disposed at the first protection member 213 (or the second protection member 215), and may increase the mass of the vibration generator 210 to lower the resonance frequency of the vibration generator 210 based on the increase in mass. Therefore, the sound characteristics and sound pressure level characteristics of the low-pitched vocal cords generated based on the vibration of the vibration generator 210 may be improved, and the flatness of the sound pressure level characteristics may be enhanced. For example, the flatness of the sound pressure level characteristics may be the magnitude of the deviation between the highest sound pressure level and the lowest sound pressure level.

[0273] The plate 216 according to an embodiment of the present disclosure may be disposed at the front surface (or the first surface) of the first protection member 213. The plate 216 may be disposed at the front surface of the first protection member 213 of the vibration generator 210 through the connection member 150. The plate 216 according to an embodiment of the present disclosure may be disposed between the display panel 100 and the vibration generator 210. For example, the plate 216 may be disposed at the rear surface of the display panel 100 through the connection member 150.

[0274] According to another embodiment of the present disclosure, the plate 216 may be disposed at the rear surface (or the second surface) of the second protection member 215. The plate 216 may be disposed at the rear surface of the second protection member 215 of the vibration generator 210 through a connecting member. According to another embodiment of the present disclosure, the plate 216 may be disposed between the vibration generator 210 and the support member 300.

[0275] Therefore, the vibration device 200 according to an embodiment of the present disclosure may include a vibration generator 210 including a plurality of vibration structures 210A to 210D arranged (or tiled) at regular intervals, thereby being realized as a single vibrator without independent driving. Therefore, it can be driven as a large-area vibrator based on the single vibration of the plurality of vibration structures 210A to 210D. Accordingly, the vibration device 200 can vibrate the entire area of the display panel 100. Therefore, the sound characteristics and the sound pressure level characteristics in the low-pitched sound band and the reproduction band of the sound generated based on the large-area vibration of the display panel 100 can be increased or improved respectively.

[0276] In addition, the vibration device 200 according to an embodiment of the present disclosure may further include a plate 216 disposed in the vibration generator 210. Therefore, the resonance frequency of the vibration generator 210 can be reduced by the plate 216. Accordingly, the vibration device 200 according to an embodiment of the present disclosure can improve the sound characteristics of the sound generated by the vibration of the display panel 100 based on the vibration of the vibration generator 210, the sound pressure level characteristics of the low-pitched sound band, and the flatness of the sound pressure level characteristics.

[0277] FIG. 5A to FIG. 5F is shown Figure 4 the vibration structure shown in

[0278] Referring to Figure 3 、 Figure 4 and Figure 5A, each of the plurality of vibration structures 210A to 210D arranged (or tiled) in the vibration generator 210 according to an embodiment of the present disclosure may include a vibration part 211. The vibration part 211 may include a plurality of first parts 211a and a plurality of second parts 211b. For example, the plurality of first parts 211a and the plurality of second parts 211b may be alternately and repeatedly arranged along the second direction Y. Each of the plurality of first parts 211a may be disposed between two adjacent second parts 211b of the plurality of second parts 211b. For example, each of the plurality of first parts 211a may have a first width W1 parallel to the second direction Y and a length parallel to the first direction X. Each of the plurality of second parts 211b may be disposed parallel to the second direction Y. For example, each of the plurality of second parts 211b may have a second width W2 and a length parallel to the first direction X. Each of the plurality of second parts 211b may have the same size, for example, the same width, area, or volume. For example, each of the plurality of second parts 211b may have the same size (e.g., the same width, area, or volume) within a process error range (or tolerance) occurring in the manufacturing process. The first width W1 may be the same as or different from the second width W2. For example, the first width W1 may be greater than the second width W2. For example, the first part 211a and the second part 211b may include linear or strip shapes having the same or different dimensions. Therefore, Figure 5A the vibration part 211 shown in may include a 2-2 composite structure and thus may have a resonance frequency of 20 kHz or less, but the embodiments of the present disclosure are not limited thereto, and the resonance frequency of the vibration part 211 may vary based on at least one or more of the shape, length, and thickness of the vibration part.

[0279] Referring to Figure 3 , Figure 4 and Figure 5B, the vibrating portion 211 of each of the plurality of vibrating structures 210A to 210D arranged (or tiled) in the vibration generator 210 according to another embodiment of the present disclosure may include a plurality of first portions 211a and a plurality of second portions 211b arranged alternately and repeatedly along a first direction X. Each of the plurality of first portions 211a may be disposed between two adjacent second portions 211b of the plurality of second portions 211b. For example, each of the plurality of first portions 211a may have a third width W3 parallel to the first direction X and a length parallel to a second direction Y. Each of the plurality of second portions 211b may have a fourth width W4 parallel to the first direction X and a length parallel to the second direction Y. The third width W3 may be the same as or different from the fourth width W4. For example, the third width W3 may be greater than the fourth width W4. For example, the first portion 211a and the second portion 211b may include linear or strip shapes having the same or different sizes. Thus, Figure 5B the vibrating portion 211 shown in may include a 2-2 composite structure and thus may have a resonant frequency of 20 kHz or less, but the embodiments of the present disclosure are not limited thereto, and the resonant frequency of the vibrating portion 211 may vary based on at least one or more of the shape, length, and thickness of the vibrating portion.

[0280] In Figure 5A and Figure 5B in the vibrating portion 211 shown in each of, each of the plurality of first portions 211a and each of the plurality of second portions 211b may be disposed (or arranged) parallel to each other on the same plane (or the same layer). Each of the plurality of second portions 211b may be configured to fill the gap between two adjacent first portions 211a. Each of the plurality of second portions 211b may be connected to or attached to an adjacent first portion 211a. Thus, the vibrating portion 211 may be expanded to have a desired size or length based on side coupling (or side connection) between the first portion 211a and the second portion 211b.

[0281] In Figure 5A and Figure 5B in the vibrating portion 211 shown in each of, the width (or size) W2 and W4 of each of the plurality of second portions 211b may gradually decrease along a direction from the central portion of the vibrating portion 211 or the vibrating device to two peripheries (or both sides or both ends).

[0282] According to another embodiment of the present disclosure, the second part 211b having the maximum width (W2, W4) among the plurality of second parts 211b may be located at a portion where the highest stress may be concentrated when the vibrating part 211 or the vibrating device vibrates in the vertical (or up and down) direction Z (or the thickness direction). The second part 211b having the minimum width (W2, W4) among the plurality of second parts 211b may be located at a portion where relatively low stress may occur when the vibrating part 211 or the vibrating device vibrates in the vertical direction Z. For example, the second part 211b having the maximum width (W2, W4) among the plurality of second parts 211b may be provided at the central part of the vibrating part 211, and the second part 211b having the minimum width (W2, W4) among the plurality of second parts 211b may be provided at each of the two peripheries of the vibrating part 211. Therefore, when the vibrating part 211 or the vibrating device vibrates in the vertical direction Z, interference of sound waves or overlapping of resonant frequencies that may occur in the portion where the highest stress is concentrated can be reduced or minimized. Accordingly, the dipping phenomenon of the sound pressure level occurring in the low-pitched vocal band can be reduced, thereby improving the flatness of the sound characteristics in the low-pitched vocal band. For example, the flatness of the sound characteristics may be the deviation level between the highest sound pressure and the lowest sound pressure.

[0283] In Figure 5A and Figure 5B each of the vibrating parts 211 shown in, each of the plurality of first parts 211a may have a different size (or width). For example, the size (or width) of each of the plurality of first parts 211a may gradually decrease or increase in a direction from the central part of the vibrating part 211 or the vibrating device to the two peripheries (or both sides or both ends). For example, in the vibrating part 211, based on various natural vibration frequencies according to the vibration of each of the plurality of first parts 211a having different sizes, the sound pressure level characteristics of the sound can be enhanced and the sound reproduction frequency band can be increased.

[0284] Referring to Figure 3 、 Figure 4 and Figure 5C, the vibration part 211 of each of the plurality of vibration structures 210A to 210D arranged (or tiled) in the vibration generator 210 according to another embodiment of the present disclosure may include a plurality of first parts 211a spaced apart from each other in a first direction X and a second direction Y, and a second part 211b disposed between the plurality of first parts 211a. The plurality of first parts 211a may be arranged to be separated from each other along the first direction X and the second direction Y. For example, each of the plurality of first parts 211a may have a hexahedron shape (or hexahedral object shape) with the same size, and may be arranged in a lattice shape. The second part 211b may be disposed between the plurality of first parts 211a in each of the first direction X and the second direction Y. The second part 211b may be configured to fill the gap or space between two adjacent first parts 211a or surround each of the plurality of first parts 211a. Accordingly, the second part 211b may be connected to or attached to an adjacent first part 211a. For example, the width of the second part 211b disposed between two first parts 211a adjacent to each other along the first direction X may be the same as or different from that of the first part 211a, and the width of the second part 211b disposed between two first parts 211a adjacent to each other along the second direction Y may be the same as or different from that of the first part 211a. Thus, Figure 5C The vibration part 211 shown in may have a resonance frequency of 30 MHz or lower according to the 1-3 composite structure, but the embodiments of the present disclosure are not limited thereto, and the resonance frequency of the vibration part 211 may vary based on at least one or more of the shape, length, and thickness of the vibration part.

[0285] Referring to Figure 3 , Figure 4 and Figure 5D , the vibration part 211 of each of the plurality of vibration structures 210A to 210D arranged (or tiled) in the vibration generator 210 according to another embodiment of the present disclosure may include a plurality of first parts 211a spaced apart from each other in a first direction X and a second direction Y, and a second part 211b surrounding each of the plurality of first parts 211a. Each of the plurality of first parts 211a may have a flat structure with a circular shape. For example, each of the plurality of first parts 211a may have a circular plate shape, but the embodiments of the present disclosure are not limited thereto, and may have a dot shape including an ellipse, a polygon, or an annulus. The second part 211b may be configured to surround each of the plurality of first parts 211a. Accordingly, the second part 211b may be connected or attached to the side surface of each of the plurality of first parts 211a. The plurality of first parts 211a and the second part 211b may be arranged (or disposed) parallel to each other on the same plane (or the same layer). Thus, Figure 5DThe vibration part 211 shown in [the figure] may include a 1-3 composite structure and may be implemented as a circular vibration source (or vibrator). Thus, vibration characteristics or sound output characteristics may be enhanced, and a resonance frequency of 30 MHz or less may be achieved. However, embodiments of the present disclosure are not limited thereto, and the resonance frequency of the vibration part 211 may vary based on at least one or more of the shape, length, and thickness of the vibration part.

[0286] Referring to Figure 3 , Figure 4 and Figure 5E , in accordance with another embodiment of the present disclosure, the vibration part 211 of each of the plurality of vibration structures 210A to 210D arranged (or tiled) in the vibration generator 210 may include a plurality of first parts 211a spaced apart from each other in a first direction X and a second direction Y and a second part 211b surrounding each of the plurality of first parts 211a. Each of the plurality of first parts 211a may have a flat structure in a triangular shape. For example, each of the plurality of first parts 211a may have a shape of a triangular plate.

[0287] For example, four adjacent first parts 211a of the plurality of first parts 211a may be adjacent to each other to form a quadrangle or a quadrilateral (or a square). The vertices of the four adjacent first parts 211a forming the quadrangle shape may be adjacent to each other in a central part (or a center part) of the quadrilateral shape. The second part 211b may be configured to surround each of the plurality of first parts 211a. Thus, the second part 211b may be connected or attached to side surfaces (or side faces) of each of the plurality of first parts 211a. The plurality of first parts 211a and the second part 211b may be disposed (or arranged) parallel to each other on the same plane (or the same layer). Thus, Figure 5E the vibration part 211 shown in [the figure] may have a resonance frequency of 30 MHz or less according to the 1-3 composite structure. However, embodiments of the present disclosure are not limited thereto, and the resonance frequency of the vibration part 211 may vary based on at least one or more of the shape, length, and thickness of the vibration part.

[0288] As another embodiment of the present disclosure, as shown in Fig. 5FAs shown, six adjacent first parts 211a among the plurality of first parts 211a can be adjacent to each other to form a hexagonal shape (or a regular hexagonal shape). The vertices of the six adjacent first parts 211a forming the hexagonal shape can be adjacent to each other in the central part (or the middle part) of the hexagonal shape. The second part 211b can be configured to surround each of the plurality of first parts 211a. Thus, the second part 211b can be connected or attached to the side surface (or the lateral surface) of each of the plurality of first parts 211a. The plurality of first parts 211a and the second part 211b can be arranged (or disposed) parallel to each other on the same plane (or the same layer). Thus, Fig. 5F The vibration part 211 shown in can include a 1-3 composite structure and can be implemented as a circular vibration source (or a vibrator), so that the vibration characteristics or the sound output characteristics can be enhanced, and it can have a resonance frequency of 30 MHz or less. However, the embodiments of the present disclosure are not limited thereto, and the resonance frequency of the vibration part 211 can vary based on at least one or more of the shape, length, and thickness of the vibration part.

[0289] Referring to Figure 5E and Fig. 5F , 2N (where N is a natural number greater than or equal to 2) adjacent first parts 211a having a triangular shape among the plurality of first parts 211a can be arranged adjacent to each other to form a 2N-sided shape.

[0290] In FIG. 5A to FIG. 5F , each of the plurality of first parts 211a according to an embodiment of the present disclosure can be configured as an inorganic material part. The inorganic material part can include a piezoelectric material or an electroactive material. The piezoelectric material or the electroactive material can have such a property that when pressure or distortion (or bending) is applied to the crystal structure by an external force, a potential difference appears due to the relative position change of positive (+) ions and negative (-) ions caused by dielectric polarization, and vibration is generated by an electric field based on the reverse voltage applied thereto. As referred to above with reference to Figure 4 As shown, the first surface of each of the plurality of first parts 211a can be electrically connected to the first electrode layer E1, and the second surface of each of the plurality of first parts 211a can be electrically connected to the second electrode layer E2.

[0291] In FIG. 5A to FIG. 5FIn this case, the inorganic material portion included in each of the plurality of first portions 211a may include a ceramic-based material for generating relatively high vibrations, or may include a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure may have a piezoelectric effect and an inverse piezoelectric effect, and may be a plate-like structure having a direction. The perovskite crystal structure may be represented by the chemical formula "ABO3". In the chemical formula, "A" may include a divalent metal element, and "B" may include a tetravalent metal element. For example, in the chemical formula "ABO3", "A" and "B" may be cations, and "O" may be an anion. For example, the chemical formula "ABO3" may include one of lead titanate (II) (PbTiO3), lead zirconate (PbZrO3), lead zirconate titanate (PbZrTiO3), barium titanate (BaTiO3), and strontium titanate (SrTiO3), but the embodiments of the present disclosure are not limited thereto.

[0292] When the perovskite crystal structure includes a central ion (e.g., lead titanate (II)), the position of the titanium (Ti) ion can be changed by an external stress or magnetic field. Therefore, the polarization can be changed, thereby generating a piezoelectric effect. For example, in the perovskite crystal structure, the cubic shape corresponding to the symmetric structure can be changed to a tetragonal (or quadrilateral), orthorhombic, or rhombohedral structure corresponding to the asymmetric structure. Therefore, a piezoelectric effect can be generated. In the tetragonal (or quadrilateral), orthorhombic, or rhombohedral structure corresponding to the asymmetric structure, the degree of polarization at the morphotropic phase boundary may be high, and the polarization can be easily rearranged. Therefore, the perovskite crystal structure may have high piezoelectric characteristics.

[0293] According to an embodiment of the present disclosure, the inorganic material portion included in each of the plurality of first portions 21 may include one or more materials of lead (Pb), zirconium (Zr), titanium (Ti), zinc (Zn), nickel (Ni), and niobium (Nb), but the embodiments of the present disclosure are not limited thereto.

[0294] According to another embodiment of the present disclosure, the inorganic material portion included in each of the plurality of first portions 211a may include a lead zirconate titanate (PZT)-based material including lead (Pb), zirconium (Zr), and titanium (Ti), or may include a lead zirconate nickel niobate (PZNN)-based material including lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but the embodiments of the present disclosure are not limited thereto. In addition, the inorganic material portion may include at least one or more of calcium titanate (CaTiO3), BaTiO3, and SrTiO3, each without Pb, but the embodiments of the present disclosure are not limited thereto.

[0295] According to another embodiment of the present disclosure, the inorganic material portions included in each of the plurality of first portions 211a may have a piezoelectric deformation coefficient "d33" of 1000 pC / N or greater in the thickness direction Z. The vibration device may be applied to a display panel having a large size, and may need to have a high piezoelectric deformation coefficient "d33" to have sufficient vibration characteristics or piezoelectric characteristics. For example, in order to have a high piezoelectric deformation coefficient "d33", the inorganic material portion may include a PZT-based material (PbZrTiO3) as a main component, and may include a softener doping material doped into the A-site (Pb) and a relaxor ferroelectric material doped into the B-site (ZrTi).

[0296] The softener doping material may enhance the piezoelectric characteristics and dielectric characteristics of the inorganic material portion, and for example, may increase the piezoelectric deformation coefficient "d33" of the inorganic material portion. The softening agent doping material according to an embodiment of the present disclosure may include a binary element "+2" to a ternary element "+3". A morphotropic phase boundary (MPB) may be achieved by adding the softening agent doping material to the PZT-based material (PbZrTiO3), and thus, the piezoelectric characteristics and dielectric characteristics may be enhanced. For example, the softening agent doping material may include strontium (Sr), barium (Ba), lanthanum (La), neodymium (Nd), calcium (Ca), yttrium (Y), erbium (Er), or ytterbium (Yb). For example, ions (Sr2+, Ba2+, La2+, Nd3+, Ca2+, Y3+, Er3+, Yb3+) of the softening agent doping material doped into the PZT-based material (PbZrTiO3) may replace a part of the lead (Pb) in the PZT-based material (PbZrTiO3), and the replacement rate may be about 2 mol% to about 20 mol%. For example, when the replacement rate is less than 2 mol% or greater than 20 mol%, the perovskite crystal structure may break, and thus, the electromechanical coupling coefficient "kP" and the piezoelectric deformation coefficient "d33" may decrease. When the softening agent doping material is replaced, an MPB may be formed, and the MPB of the piezoelectric characteristics and dielectric characteristics in the MPB may be higher, thereby realizing a vibration device having high piezoelectric characteristics and high dielectric characteristics.

[0297] According to an embodiment of the present disclosure, a relaxor ferroelectric material doped into a PZT-based material (PbZrTiO3) can enhance the electro-deformation characteristics of the inorganic material portion. The relaxor ferroelectric material according to an embodiment of the present disclosure may include a lead magnesium niobate (PMN)-based material or a lead nickel niobate (PNN)-based material, but the embodiments of the present disclosure are not limited thereto. The PMN-based material may include Pb, Mg, and Nb, and may include, for example, Pb(Ni,Nb)O3. For example, the relaxor ferroelectric material doped into the PZT-based material (PbZrTiO3) may replace a part of each of zirconium (Zr) and titanium (Ti) in the PZT-based material (PbZrTiO3), and the replacement rate may be about 5 mol% to about 25 mol%. For example, when the replacement rate is less than 5 mol% or greater than 25 mol%, the perovskite crystal structure may break, and thus, the electromechanical coupling coefficient "kP" and the piezoelectric deformation coefficient "d33" may decrease.

[0298] According to an embodiment of the present disclosure, the inorganic material portion provided in each of the plurality of first portions 211a may further include a donor material doped into the B-site (ZrTi) of the PZT-based material (PbZrTiO3) to further enhance the piezoelectric coefficient. For example, the donor material doped into the B-site (ZrTi) may include a tetravalent element "+4" or a hexavalent element "+6". For example, the donor material doped into the B-site (ZrTi) may include tellurium (Te), germanium (Ge), uranium (U), bismuth (Bi), niobium (Nb), tantalum (Ta), antimony (Sb), or tungsten (W).

[0299] The inorganic material portion provided in each of the plurality of first portions 211a according to an embodiment of the present disclosure may have a piezoelectric deformation coefficient "d33" of 1000 pC / N or greater in the thickness direction Z, thereby realizing a vibration device having enhanced vibration characteristics. For example, a vibration device having enhanced vibration characteristics may be realized in a large-area device.

[0300] In FIG. 5A to FIG. 5F , the second portion 211b may be provided between the plurality of first portions 211a, or may be provided to surround each of the plurality of first portions 211a. Therefore, in the vibration portion 211 of the vibration generator 210 or the vibration device 200, the vibration energy linked in the unit lattice of each first portion 211a can be increased by the corresponding second portion 211b. Therefore, the vibration can be increased, and piezoelectric characteristics and flexibility can be ensured. For example, the second portion 211b may include one of an epoxy-based polymer, an acrylic-based polymer, and a silicone-based polymer, but the embodiments of the present disclosure are not limited thereto.

[0301] The second part 211b according to an embodiment of the present disclosure may be configured as an organic material part. For example, the organic material part may be disposed between the inorganic material parts and may absorb an impact applied to the inorganic material part (or the first part), may release stress concentrated on the inorganic material part to improve the overall durability of the vibration generator 210 or the vibration part 211 of the vibration device, and may provide flexibility to the vibration generator 210 or the vibration part 211 of the vibration device.

[0302] The second part 211b according to an embodiment of the present disclosure may have a modulus and viscoelasticity lower than those of each first part 211a. Accordingly, the second part 211b may enhance the reliability of each first part 211a that is vulnerable to impact due to its brittle characteristics. For example, the second part 211b may include a material having a loss factor of about 0.01 to about 1.0 and a modulus of about 0.1 [GPa] to about 10 [GPa].

[0303] The organic material part included in the second part 211b may include one or more of an organic material, an organic polymer, an organic piezoelectric material, and an organic non-piezoelectric material having flexible characteristics compared to the inorganic material part of the first part 211a. For example, the second part 211b may be referred to as an elastic part, an elastic force part, a connection part, an organic part, an organic material part, an adhesive part, a stretching part, a bending part, a damping part, or a flexible part, but embodiments of the present disclosure are not limited thereto.

[0304] Accordingly, a plurality of first parts 211a and second parts 211b may be disposed on (or connected to) the same plane. Thus, the vibration part 211 of the vibration generator 210 according to various embodiments of the present disclosure may have a single thin film type. For example, the vibration part 211 may vibrate in the vertical (or up and down) direction (or thickness direction) through the first part 211a having vibration characteristics, and may be bent in a bent shape through the second part 211b having flexibility. In addition, in the vibration part 211 of the vibration generator 210 according to various embodiments of the present disclosure, the sizes of the first part 211a and the second part 211b may be adjusted based on the piezoelectric characteristics and flexibility required for the vibration part 211. For example, when the vibration part 211 requires piezoelectric characteristics rather than flexibility, the size of the first part 211a may be adjusted to be larger than the size of the second part 211b. As another embodiment of the present disclosure, when the vibration part 211 requires flexibility rather than piezoelectric characteristics, the size of the second part 211b may be adjusted to be larger than the size of the first part 211a. Accordingly, the size of the vibration part 211 may be adjusted based on the characteristics required for the vibration part 211, and thus, the vibration part 211 may be easily designed.

[0305] FIG. 5A to FIG. 5FOne or more of the vibration portions 211 shown in may be Figure 3 One or more of the vibration portions 211 in the plurality of vibration structures 210A to 210D shown in. For example, based on the desired characteristics of the sound generated according to the vibration of the vibration device 200, each of the plurality of vibration structures 210A to 210D may utilize one or more of the vibration portions 211 described above with reference to FIG. 5A to FIG. 5F to be implemented.

[0306] According to an embodiment of the present disclosure, each of the plurality of vibration structures 210A to 210D may include one or more of the vibration portions 211 described above with reference to FIG. 5A to FIG. 5F or may include different vibration portions 211.

[0307] According to an embodiment of the present disclosure, some of the plurality of vibration structures 210A to 210D and other vibration generating portions may include different vibration portions 211 of the vibration portions 211 described above with reference to FIG. 5A to FIG. 5F . For example, in Figure 3 among the first vibration structure 210A to the fourth vibration structure 210D shown, each of the first vibration structure 210A and the second vibration structure 210B may include one or more of the vibration portions 211 described above with reference to FIG. 5A to FIG. 5F , and each of the third vibration structure 210C and the fourth vibration structure 210D may include vibration portions 211 different from the vibration portions 211 of the first vibration structure 210A and the second vibration structure 210B among the vibration portions 211 described above with reference to FIG. 5A to FIG. 5F . For example, in Figure 3 among the first vibration structure 210A to the fourth vibration structure 210D shown, the first vibration structure 210A and the fourth vibration structure 210D disposed in the first diagonal direction may include one or more of the vibration portions 211 described above with reference to FIG. 5A to FIG. 5F , and the second vibration structure 210B and the third vibration structure 210C disposed in the second diagonal direction may include vibration portions 211 different from the vibration portions 211 of the first vibration structure 210A and the fourth vibration structure 210D disposed in the first diagonal direction among the vibration portions 211 described above with reference to FIG. 5A to FIG. 5F .

[0308] Figure 6 shows a device according to another embodiment of the present disclosure. Figure 6 shows another cross-sectional view taken along the line I-I' shown in Figure 1 .

[0309] A vibration device including a single vibration generator may have a problem of being unable to output sufficient sound. For example, when a vibration device including a single vibration generator is applied to a device such as a television (TV), there may be a problem of difficulty in ensuring sufficient sound. Thus, when a vibration device implemented with two vibration generators is applied to a device, the attachment area between the display panel 100 and the vibration device may be enlarged. As the attachment area is enlarged, when the vibration device is attached to the rear surface of the display panel 100, it may be difficult to attach the vibration device to the rear surface of the display panel 100 without bubbles. For example, when the display panel 100 may be a light-emitting display panel, there may be a problem of difficulty in attaching the vibration device to the encapsulation substrate without bubbles. In addition, in a vibration device implemented with two vibration generators arranged in parallel, since the vibrations of adjacent vibration generators are different, there may be a problem of partitioned vibration where different vibrations occur. Thus, there may be a problem of difficulty in outputting sound with enhanced sound flatness. There may be a problem that the partitioned vibration increases as the attachment area of the vibration device increases.

[0310] The vibration device 200 according to an embodiment of the present disclosure may include a plurality of vibration generators 210 and 230 that overlap (or stack) with each other. The vibration device 200 may include a plurality of vibration generators 210 and 230 that overlap or stack to shift in the same direction. For example, the vibration device 200 may include a plurality of vibration generators 210 and 230 that are stacked on top of each other and configured to vibrate in the same direction. For example, some of the plurality of vibration generators 210 and 230 may overlap in a direction perpendicular to the front surface of the display panel 100. For example, in the vibration generator or in each vibration generator (when the device or vibration device includes a plurality of vibration generators), the vibration structures may be arranged planar to each other. For example, in the vibration generator or in each vibration generator (when the device or vibration device includes a plurality of vibration generators), the vibration structures may be arranged to shift in the same direction. For example, the vibration device 200 may include a plurality of vibration generators 210 and 230 that overlap or stack to have the same driving direction. For example, each of the vibration generators 210 and 230 may be a vibration film, a displacement film, or a sound generator, but embodiments of the present disclosure are not limited thereto.

[0311] Multiple vibration generators 210 and 230 may overlap or stack to shift (or drive or vibrate) in the same direction. For example, in a state where multiple vibration generators 210 and 230 overlap or stack, multiple vibration generators 210 and 230 may contract or expand in the same driving direction (or shifting direction) based on a vibration driving signal. Thus, the shift amount (or bending force or flexural force) or amplitude shift of the display panel 100 may increase or may be maximized. Therefore, multiple vibration generators 210 and 230 may increase (or maximize) the shift amount (or bending force or flexural force) or amplitude shift of the display panel 100, thereby enhancing the sound pressure level characteristics of the sound generated based on the vibration of the display panel 100 and the sound characteristics of the mid - low pitch vocal cords. For example, multiple vibration generators 210 and 230 may be implemented such that multiple vibration generators 210 and 230 overlap or stack to have the same driving direction. Thus, the driving force of each of multiple vibration generators 210 and 230 may increase or may be maximized, thereby enhancing the sound pressure level characteristics of the sound generated by the display panel 100 based on the vibration of multiple vibration generators 210 and 230 and the sound characteristics of the mid - low pitch vocal cords. For example, multiple vibration generators 210 and 230 may be implemented such that multiple vibration generators 210 and 230 are stacked to have the same vibration direction. Thus, the vibration of each of multiple vibration generators 210 and 230 may increase or may be maximized. For example, the mid - low pitch vocal cords may be from 200 Hz to 1 kHz, but the embodiments of the present disclosure are not limited thereto.

[0312] Each of multiple vibration generators 210 and 230 may include a vibration structure (or a piezoelectric structure, or a vibration part, or a piezoelectric vibration part). The vibration structure (or a piezoelectric structure, or a vibration part, or a piezoelectric vibration part) includes a piezoelectric ceramic having piezoelectric properties, but the embodiments of the present disclosure are not limited thereto. For example, each of multiple vibration generators 210 and 230 may include a piezoelectric ceramic having a perovskite crystal structure and may thus vibrate (or mechanically shift) in response to an externally applied electrical signal. For example, when a vibration driving signal (or a voice signal) is applied, each of multiple vibration generators 210 and 230 may alternately and repeatedly contract and expand based on the inverse piezoelectric effect of the vibration structure (or a piezoelectric structure, or a vibration part, or a piezoelectric vibration part). Thus, it may shift (or vibrate or drive) in the same direction based on the bending phenomenon in which the bending direction alternates, thereby increasing or maximizing the shift amount (or bending force or flexural force) or amplitude shift of the vibration device 200 or / and the display panel 100.

[0313] Among the plurality of vibration generators 210 and 230, the first vibration generator 210 disposed at the display panel 100 may be a main vibration generator. For example, the remaining second vibration generator 230 among the plurality of vibration generators 210 and 230 may be at least one auxiliary vibration generator stacked on the first vibration generator 210. The second vibration generator 230 may have the same structure as the first vibration generator 210, but embodiments of the present disclosure are not limited thereto.

[0314] The vibration device 200 according to an embodiment of the present disclosure may further include an adhesive member 250 (or a third connection member) disposed between the plurality of vibration generators 210 and 230.

[0315] The adhesive member 250 according to an embodiment of the present disclosure may be disposed between the plurality of vibration generators 210 and 230. For example, the adhesive member 250 may include a material including an adhesive layer that has good adhesion or attachment force to each of the plurality of vibration generators 210 and 230. For example, the adhesive member 250 may include a foam pad, a double-sided tape, or an adhesive, but embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the adhesive member 250 may include an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane, but embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the adhesive member 250 may include a polyurethane-based material that has relatively tough characteristics compared to the acrylic resin among the acrylic resin and the polyurethane. Accordingly, vibration loss of the vibration device 200 caused by shift interference between the plurality of vibration generators 210 and 230 may be minimized, or each of the plurality of vibration generators 210 and 230 may be freely shifted.

[0316] According to another embodiment of the present disclosure, the adhesive member 250 may include one or more of a thermosetting adhesive, a photocuring adhesive, and a thermal bonding adhesive. For example, the adhesive member 250 may include a thermal bonding adhesive. The thermal bonding adhesive may be a thermally active type or a thermosetting type. For example, the adhesive member 250 including the thermal bonding adhesive may attach or couple two adjacent vibration generators 210 and 230 by heat and pressure.

[0317] The plurality of vibration generators 210 and 230 according to an embodiment of the present disclosure may be integrated into one structure (or element) by a lamination process using the adhesive member 250. For example, the plurality of vibration generators 210 and 230 according to an embodiment of the present disclosure may be integrated into one structure (or element or component) by a lamination process using the adhesive member 250. For example, the plurality of vibration generators 210 and 230 may be integrated into one structure by a lamination process using a roller.

[0318] The device according to an embodiment of the present disclosure may further include a connection member 150 (or a first connection member) disposed between the display panel 100 and the vibration device 200.

[0319] The connection member 150 may be disposed between the display panel 100 and the vibration device 200, so that the vibration device 200 can be connected or coupled to the rear surface of the display panel 100. For example, the vibration device 200 can be connected or coupled to the rear surface of the display panel 100 by using the connection member 150. Therefore, the vibration device 200 can be supported by the rear surface of the display panel 100 or disposed at the rear surface of the display panel 100.

[0320] The connection member 150 according to an embodiment of the present disclosure may include a material including an adhesive layer that has good adhesion or adhesiveness to each of the rear surfaces of the display panel 100 and the vibration device 200. For example, the connection member 150 may include a foam pad, a double-sided tape, or an adhesive, but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the connection member 150 may include an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane, but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the connection member 150 may be different from the adhesive layer of the adhesive member 250. For example, the adhesive layer of the connection member 150 may include an acrylic-based material in the acrylic-based material and the polyurethane, and the acrylic-based material has relatively better adhesiveness and hardness, so that the vibration of the vibration device 200 can be well transmitted to the display panel 100. Therefore, the vibration of the vibration device 200 can be well transmitted to the display panel 100.

[0321] The adhesive layer of the connection member 150 may further include additives such as tackifiers or adhesion enhancers, wax components, antioxidants, etc. The additives can prevent or reduce the separation (peeling) of the connection member 150 from the display panel 100 due to the vibration of the vibration device 200. For example, the tackifier may be a rosin derivative, etc., and the wax component may be paraffin, etc. For example, the antioxidant may be a phenol-based antioxidant such as a thioester, but the embodiments of the present disclosure are not limited thereto.

[0322] The connection member 150 according to another embodiment of the present disclosure may further include a hollow portion between the display panel 100 and the vibration device 200. The hollow portion of the connection member 150 may provide an air gap between the display panel 100 and the vibration device 200. Due to the air gap, the sound wave (or sound pressure) based on the vibration of the vibration device 200 may not be dispersed by the connection member 150 and may be concentrated on the display panel 100. Therefore, the loss of vibration caused by the connection member 150 can be minimized, thereby increasing the sound pressure level characteristic of the sound generated based on the vibration of the display panel 100.

[0323] The device according to an embodiment of the present disclosure may further include a support member 300 and an intermediate frame 400 disposed at the rear surface of the display panel 100. The description of the support member 300 and the intermediate frame 400 may be substantially the same as the description given above with reference to Figure 1 and Figure 2 the description given above, and thus, the repeated description thereof may be omitted.

[0324] Figure 7 FIG. shows a vibration device according to another embodiment of the present disclosure. Figure 8 is a cross-sectional view taken along line III-III' shown in Figure 7 FIG.

[0325] Referring to Figures 6 to 8 , the vibration device 200 according to another embodiment of the present disclosure may include a plurality of vibration generators 210 and 230 and an adhesive member 250.

[0326] The plurality of vibration generators 210 and 230 may overlap or stack to shift (or drive or vibrate) in the same direction so as to maximize the amplitude shift of the vibration device 200 and / or the amplitude shift of the display panel 100. For example, the plurality of vibration generators 210 and 230 may have substantially the same size, but the embodiments of the present disclosure are not limited thereto. For example, the plurality of vibration generators 210 and 230 may have substantially the same size within the error range of the manufacturing process, but the embodiments of the present disclosure are not limited thereto. Thus, the plurality of vibration generators 210 and 230 may maximize the amplitude shift of the vibration device 200 and / or the amplitude shift of the display panel 100. One side (or end, or outer surface, or each corner) 210a and 230a of the plurality of vibration generators 210 and 230 may be aligned on a virtual extension line VL extending in the thickness direction Z of the display panel 100, or may be disposed at the virtual extension line VL. For example, one side (or end, or end, or outer surface, or each corner) 210a and 230a of each of the plurality of vibration generators 210 and 230 may be aligned in a direction perpendicular to the front surface of the display panel 100.

[0327] For example, in at least one of the plurality of vibration generators 210 and 230, the shifting directions and amplitude shifts of the plurality of vibration generators 210 and 230 may not match, and thus, the amplitude shift of the vibration device 200 may not be maximized. For example, when at least one of the plurality of vibration generators 210 and 230 has different sizes outside the error range of the manufacturing process, the shifting directions and amplitude shifts of the plurality of vibration generators 210 and 230 may not match, and thus, the amplitude shift of the vibration device 200 may not be maximized. In addition, when at least one of the plurality of vibration generators 210 and 230 shifts in different directions, the shifting directions of the plurality of vibration generators 210 and 230 may not match, and thus, the amplitude shift of the vibration device 200 may not be maximized.

[0328] The vibration device 200 according to an embodiment of the present disclosure may include two or more vibration generators 210 and 230, and the two or more vibration generators 210 and 230 are stacked to shift (or vibrate or drive) in the same direction. In the following description, an example in which the vibration device 200 includes the vibration generators 210 and 230 will be described.

[0329] According to an embodiment of the present disclosure, the first vibration generator 210 may be connected to the rear surface of the display panel 100 or disposed at the rear surface of the display panel 100 through a connection member 150 (or a first connection member). The second vibration generator 230 may be disposed or attached to the first vibration generator 210 through an adhesive member 250 (or a third connection member).

[0330] Both the first vibration generator 210 and the second vibration generator 230 according to an embodiment of the present disclosure may include a vibration part 221, a first protection member 213, and a second protection member 215.

[0331] The vibration part 221 may include a piezoelectric material (or a piezoelectric element) having piezoelectric characteristics (or a piezoelectric effect). For example, the piezoelectric material may have such characteristics that in the case where pressure or distortion is applied to the crystal structure by an external force, a potential difference appears due to the relative position change of positive (+) ions and negative (-) ions caused by dielectric polarization, and vibration is generated by an electric field based on the voltage applied thereto. For example, the vibration part 221 may be a vibration generating structure, a sound generating structure, a vibration generating part, a sound generating part, a piezoelectric structure, or a shifting structure, but the embodiments of the present disclosure are not limited thereto.

[0332] The vibration part 221 according to an embodiment of the present disclosure may include a vibration layer 221a including a piezoelectric material, a first electrode layer 221b disposed on a first surface of the vibration layer 221a, and a second electrode layer 221c disposed on a second surface of the vibration layer 221a opposite to the first surface.

[0333] The vibration layer 221a may include a piezoelectric material. The vibration layer 221a may be referred to as a vibration part, a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a piezoelectric vibration part, a piezoelectric vibration layer, a piezoelectric composite, a displacement part, a piezoelectric displacement part, a piezoelectric displacement layer, an acoustic wave generation part, a piezoelectric material part, an electroactive part, an organic / inorganic material layer, an inorganic material layer, an organic / inorganic material part, or an inorganic material part, but embodiments of the present invention are not limited thereto.

[0334] The vibration layer 221a may be formed of a transparent, translucent, or opaque piezoelectric material and may be transparent, translucent, or opaque. The vibration layer 221a may be substantially the same as the vibration part 211 described above with reference to FIG. 5A to FIG. 6 and thus, a repetitive description thereof may be omitted.

[0335] The vibration layer 221a according to an embodiment of the present disclosure may be configured to be circular, elliptical, or polygonal, but embodiments of the present disclosure are not limited thereto.

[0336] The first electrode layer 221b may be disposed at a first surface (or upper surface) of the vibration layer 221a. The second electrode layer 221c may be disposed at a second surface (or rear surface) of the vibration layer 221a opposite to or different from the first surface. The first electrode layer 221b and the second electrode layer 221c may be substantially the same as the first electrode layer E1 and the second electrode layer E2 described above with reference to Figure 3 and Figure 4 and thus, a repetitive description thereof may be omitted or briefly given.

[0337] For example, the first electrode layer 221b may have substantially the same shape as the vibration layer 221a, but embodiments of the present disclosure are not limited thereto. For example, the second electrode layer 221c may generally have the same shape as the vibration layer 221a, but embodiments of the present disclosure are not limited thereto.

[0338] In each of the first vibration generator 210 and the second vibration generator 230, the first electrode layer 221b may be disposed closer to the display panel 100 than the second electrode layer 221c, but embodiments of the present disclosure are not limited thereto. For example, in the vibration device 200 including a plurality of vibration generators 210 and 230 according to an embodiment of the present disclosure, the first electrode layer 221b of each of the plurality of vibration generators 210 and 230 may be disposed closer to the display panel 100 than the second electrode layer 221c.

[0339] The vibration layer 221a can be polarized (or is polarized) by applying a specific voltage to the first electrode layer 221b and the second electrode layer 221c in a specific temperature atmosphere or in a temperature atmosphere that changes from a high temperature to room temperature. However, embodiments of the present disclosure are not limited thereto. For example, the vibration layer 221a can alternately and repeatedly contract and expand based on the inverse piezoelectric effect according to a vibration drive signal (or a sound signal or a voice signal) applied from the outside to the first electrode layer 221b and the second electrode layer 221c, so that displacement or vibration can be performed.

[0340] The vibration part 221 (or the vibration layer 221a) of the first vibration generator 210 can have the same size as the vibration part 221 (or the vibration layer 221a) of the second vibration generator 230. In order to maximize or increase the displacement amount or the amplitude displacement of the vibration device 200, the vibration part 221 (or the vibration layer 221a) of the first vibration generator 210 can be substantially overlapped or stacked with the vibration part 221 (or the vibration layer 221a) of the second vibration generator 230 without interleaving. For example, the vibration part 221 (or the vibration layer 221a) of the first vibration generator 210 can be substantially overlapped or stacked with the vibration part 221 (or the vibration layer 221a) of the second vibration generator 230 within the error range of the manufacturing process without interleaving. For example, the vibration part 221 (or the vibration layer 221a) of the first vibration generator 210 and the vibration part 221 (or the vibration layer 221a) of the second vibration generator 230 can be implemented in a stacked structure having the same size and overlapping (or stacking) without interleaving. Therefore, the displacement amount or the amplitude displacement of the vibration device 200 can be maximized or increased. For example, the vibration part 221 (or the vibration layer 221a) of the first vibration generator 210 and the vibration part 221 (or the vibration layer 221a) of the second vibration generator 230 can be implemented in a stacked structure having the same size and precisely overlapping (or stacking) without interleaving. Therefore, the displacement amount or the amplitude displacement of the vibration device 200 can be maximized or increased.

[0341] According to an embodiment of the present disclosure, the first portion (or end portion, or outer surface, or each corner portion) 210a of each vibration portion 221 (or vibration layer 221a) of the first vibration generator 210 may be aligned on the virtual extension line VL, or may be disposed at the virtual extension line VL. For example, the first portion (or end portion, or outer surface, or each corner portion) 210a of each vibration portion 221 (or vibration layer 221a) of the first vibration generator 210 may be precisely aligned on the virtual extension line VL, or may be precisely disposed at the virtual extension line VL. The second portion (or end portion, or outer surface, or each corner portion) 230a of each vibration portion 221 (or vibration layer 221a) of the second vibration generator 230 may be aligned on the virtual extension line VL, or may be disposed at the virtual extension line VL. For example, the second portion (or end portion, or outer surface, or each corner portion) 230a of each vibration portion 221 (or vibration layer 221a) of the second vibration generator 230 may be precisely aligned on the virtual extension line VL, or may be precisely disposed at the virtual extension line VL. The first portion 210a of each vibration portion 221 (or vibration layer 221a) of the first vibration generator 210 may be aligned or overlapped with the second portion 230a of each vibration portion 221 (or vibration layer 221a) of the second vibration generator 230. For example, the first portion 210a of the vibration portion 221 (or vibration layer 221a) of the first vibration generator 210 may be precisely aligned or overlapped with the second portion 230a of each vibration portion 221 (or vibration layer 221a) of the second vibration generator 230. For example, the first portion 210a of the vibration portion 221 (or vibration layer 221a) of the first vibration generator 210 may correspond to the second portion 230a of each vibration portion 221 (or vibration layer 221a) of the second vibration generator 230. Therefore, in the vibration device 200 according to an embodiment of the present disclosure, the vibration portion 221 (or the first vibration portion) of the first vibration generator 210 and the vibration portion 221 (or the second vibration portion) of the second vibration generator 230 may be displaced in the same direction. Therefore, the displacement amount or the amplitude displacement of the vibration device 200 may be maximized or increased. Therefore, the displacement amount (or bending force or flexural force) or the amplitude displacement of the display panel 100 may be increased (or maximized).

[0342] In the first vibration generator 210, a first protective member 213 may be disposed on the first electrode layer 221b. The first protective member 213 may protect the first electrode layer 221b. A second protective member 215 may be disposed on the second electrode layer 221c. The second protective member 215 may protect the second electrode layer 221c. For example, the first protective member 213 and the second protective member 215 of the first vibration generator 210 may be formed of a plastic material, a fiber material, or a wood material, but embodiments of the present disclosure are not limited thereto. For example, in the first vibration generator 210, the first protective member 213 may be formed of the same or different material as the second protective member 215. One or more of the first protective member 213 and the second protective member 215 of the first vibration generator 210 may be connected or coupled to the rear surface of the display panel 100 through a connection member (or second connection member) 150. For example, the first protective member 213 of the first vibration generator 210 may be connected or coupled to the rear surface of the display panel 100 through the connection member (or second connection member) 150.

[0343] In the second vibration generator 230, a first protective member 213 may be disposed on the first electrode layer 221b. The first protective member 213 may protect the first electrode layer 221b. A second protective member 215 may be disposed on the second electrode layer 221c. The second protective member 215 may protect the second electrode layer 221c. For example, the first protective member 213 and the second protective member 215 of the second vibration generator 230 may be formed of a plastic material, a fiber material, or a wood material, but embodiments of the present disclosure are not limited thereto. For example, in the second vibration generator 230, the first protective member 213 may be formed of the same or different material as the second protective member 215. One or more of the first protective member 213 and the second protective member 215 of the second vibration generator 230 may be connected or coupled to the rear surface of the first vibration generator 210 through an adhesive member (or third connection member) 250. For example, the first protective member 213 of the second vibration generator 230 may be connected or coupled to the second protective member 215 of the first vibration generator 210 through the adhesive member 250.

[0344] In each of the first vibration generator 210 and the second vibration generator 230, each of the first protective member 213 and the second protective member 215 may be formed of a plastic material. For example, each of the first protective member 213 and the second protective member 215 may be a polyimide (PI) film or a polyethylene terephthalate (PET) film, but embodiments of the present disclosure are not limited thereto.

[0345] One or more of the first vibration generator 210 and the second vibration generator 230 according to an embodiment of the present disclosure may further include a first adhesive layer 212 and a second adhesive layer 214.

[0346] In the first vibration generator 210, the first adhesive layer 212 may be disposed between the vibration part 221 and the first protection member 213. For example, the first adhesive layer 212 may be disposed between the first electrode layer 221b of the vibration part 221 and the first protection member 213. The first protection member 213 may be disposed above the first surface (or the first electrode layer 221b) of the vibration part 221 through the first adhesive layer 212. For example, the first protection member 213 may be coupled or connected to the first surface (or the first electrode layer 221b) of the vibration part 221 by a film lamination process using the first adhesive layer 212.

[0347] In the first vibration generator 210, the second adhesive layer 214 may be disposed between the vibration part 221 and the second protection member 215. For example, the second adhesive layer 214 may be disposed between the second electrode layer 221c of the vibration part 221 and the second protection member 215. The second protection member 215 may be disposed above the second surface (or the second electrode layer 221c) of the vibration part 221 through the second adhesive layer 214. For example, the second protection member 215 may be coupled or connected to the second surface (or the second electrode layer 221c) of the vibration part 221 by a film lamination process using the second adhesive layer 214.

[0348] In the first vibration generator 210, the first adhesive layer 212 and the second adhesive layer 214 may be connected or coupled to each other between the first protection member 213 and the second protection member 215. For example, in the first vibration generator 210, the first adhesive layer 212 and the second adhesive layer 214 may be connected or coupled to each other at a peripheral portion between the first protection member 213 and the second protection member 215. Thus, in the first vibration generator 210, the vibration part 221 may be surrounded by the first adhesive layer 212 and the second adhesive layer 214. For example, the first adhesive layer 212 and the second adhesive layer 214 may completely surround the entire vibration part 221. For example, the first adhesive layer 212 and the second adhesive layer 214 may be referred to as a cover member, but the embodiments of the present disclosure are not limited thereto. When the first adhesive layer 212 and the second adhesive layer 214 are cover members, the first protection member 213 may be disposed at a first surface of the cover member, and the second protection member 215 may be disposed at a second surface of the cover member. For example, for ease of description, the first adhesive layer 212 and the second adhesive layer 214 are shown as the first adhesive layer 212 and the second adhesive layer 214, but the embodiments of the present disclosure are not limited thereto, and may be provided as one adhesive layer.

[0349] In the second vibration generator 230, the first adhesive layer 212 may be disposed between the vibration part 221 and the first protective member 213. For example, the first adhesive layer 212 may be disposed between the first electrode layer 221b of the vibration part 221 and the first protective member 213. The first protective member 213 may be disposed above the first surface (or the first electrode layer 221b) of the vibration part 221 through the first adhesive layer 212. For example, the first protective member 213 may be coupled or connected to the first surface (or the first electrode layer 221b) of the vibration part 221 by a film lamination process using the first adhesive layer 212.

[0350] In the second vibration generator 230, the second adhesive layer 214 may be disposed between the vibration part 221 and the second protective member 215. For example, the second adhesive layer 214 may be disposed between the second electrode layer 221c of the vibration part 221 and the second protective member 215. The second protective member 215 may be disposed above the second surface (or the second electrode layer 221c) of the vibration part 221 through the second adhesive layer 214. For example, the second protective member 215 may be coupled or connected to the second surface (or the second electrode layer 221c) of the vibration part 221 by a film lamination process using the second adhesive layer 214.

[0351] In the second vibration generator 230, the first adhesive layer 212 and the second adhesive layer 214 may be connected or coupled to each other between the first protective member 213 and the second protective member 215. For example, in the second vibration generator 230, the first adhesive layer 212 and the second adhesive layer 214 may be connected or coupled to each other at the peripheral portion between the first protective member 213 and the second protective member 215. Accordingly, in the second vibration generator 230, the vibration part 221 may be surrounded by the first adhesive layer 212 and the second adhesive layer 214. For example, the first adhesive layer 212 and the second adhesive layer 214 may completely surround the entire vibration part 221. For example, the first adhesive layer 212 and the second adhesive layer 214 may be referred to as a cover member, but embodiments of the present disclosure are not limited thereto. When the first adhesive layer 212 and the second adhesive layer 214 are cover members, the first protective member 213 may be disposed on the first surface of the cover member, and the second protective member 215 may be disposed on the second surface of the cover member. For example, for ease of description, the first adhesive layer 212 and the second adhesive layer 214 are shown as the first adhesive layer 212 and the second adhesive layer 214, but embodiments of the present disclosure are not limited thereto, and may be provided as one adhesive layer.

[0352] In each of the first vibration generator 210 and the second vibration generator 230, each of the first adhesive layer 212 and the second adhesive layer 214 may include an electrically insulating material. For example, the electrically insulating material may have adhesiveness and may include a material capable of being compressed and decompressed. For example, one or more of the first adhesive layer 212 and the second adhesive layer 214 may include an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane resin, but embodiments of the present disclosure are not limited thereto.

[0353] One or more of the first vibration generator 210 and the second vibration generator 230 according to an embodiment of the present disclosure may further include a first power line PL1, a second power line PL2, and a pad portion 217.

[0354] The first power line PL1 of one or more of the first vibration generator 210 and the second vibration generator 230 may extend longer in the second direction Y. The first power line PL1 may be disposed at the first protective member 213 and may be electrically connected to the first electrode layer 221b. For example, the first power line PL1 may be disposed at the rear surface of the first protective member 213 facing the first electrode layer 221b and may be electrically connected to the first electrode layer 221b. For example, the first power line PL1 may be disposed at the rear surface of the first protective member 213 directly facing the first electrode layer 221b and may be directly electrically connected to the first electrode layer 221b. For example, the first power line PL1 may be electrically connected to the first electrode layer 221b by using an anisotropic conductive film. As another embodiment of the present disclosure, the first power line PL1 may be electrically connected to the first electrode layer 221b by a conductive material (or particles) included in the first adhesive layer 212.

[0355] For example, the first power line PL1 of one or more of the first vibration generator 210 and the second vibration generator 230 may include at least one or more first power lines protruding in the first direction X intersecting the second direction Y. The at least one or more first power lines may extend longer in the first direction X from at least one of one surface and the other surface of the first power line PL1 and may be electrically connected to the first electrode layer 221b. Accordingly, the at least one or more first power lines may enhance the uniformity of the vibration driving signal applied to the first electrode layer 221b.

[0356] The second power line PL2 of one or more of the first vibration generator 210 and the second vibration generator 230 may be disposed at the second protection member 215 and may be electrically connected to the second electrode layer 221c. For example, the second power line PL2 may be disposed at the rear surface of the second protection member 215 facing the second electrode layer 221c and may be electrically connected to the second electrode layer 221c. For example, the second power line PL2 may be disposed at the rear surface of the second protection member 215 directly facing the second electrode layer 221c and may be directly electrically connected to the second electrode layer 221c. For example, the second power line PL2 may be electrically connected to the second electrode layer 221c by using an anisotropic conductive film. As another embodiment of the present disclosure, the second power line PL2 may be electrically connected to the second electrode layer 221c through a conductive material (or particles) included in the second adhesive layer 214.

[0357] For example, the second power line PL2 of one or more of the first vibration generator 210 and the second vibration generator 230 may include at least one or more second power lines protruding along the first direction X. At least one or more second power lines may extend longer along the first direction X from at least one of one surface and the other surface of the second power line PL2 and may be electrically connected to the second electrode layer 221c. At least one or more second power lines may overlap or stack with at least one or more first power lines. Therefore, at least one or more second power lines may enhance the uniformity of the vibration driving signal applied to the second electrode layer 221c.

[0358] The pad portion 217 may be electrically connected to a first portion (or one side or one end) of one or more of the first power line PL1 and the second power line PL2. For example, the pad portion 217 may be disposed at a first peripheral portion of one or more of the first protection member 213 and the second protection member 215. The pad portion 217 may be electrically connected to a first portion (or one side or one end) of one or more of the first power line PL1 and the second power line PL2.

[0359] The pad portion 217 according to an embodiment of the present disclosure may include a first pad electrode electrically connected to a first portion (or one side or one end) of the first power line PL1 and a second pad electrode electrically connected to a first portion (or one side or one end) of the second power line PL2. For example, one or more of the first pad electrode and the second pad electrode may be exposed at a first peripheral portion of one or more of the first protection member 213 and the second protection member 215.

[0360] One or more of the first vibration generator 210 and the second vibration generator 230 according to an embodiment of the present disclosure may further include a flexible cable 219.

[0361] The flexible cable 219 may be electrically connected to the pad portions 217 of one or more of the first vibration generator 210 and the second vibration generator 230. Accordingly, the flexible cable 219 may supply a vibration driving signal (or a sound signal) provided from the vibration driving circuit to the corresponding vibration portion 221. The flexible cable 219 according to an embodiment of the present disclosure may include a first terminal and a second terminal. The first terminal may be electrically connected to the first pad electrode of the pad portion 217. The second terminal may be electrically connected to the second pad electrode of the pad portion 217. For example, the flexible cable 219 may be a flexible printed circuit cable or a flexible flat cable, but the embodiments of the present disclosure are not limited thereto.

[0362] The vibration driving circuit (or the sound processing circuit) may generate an alternating current (AC) vibration driving signal including a first vibration driving signal and a second vibration driving signal based on a sound source. The first vibration driving signal may be any one of a positive (+) vibration driving signal and a negative (-) vibration driving signal, and the second vibration driving signal may be any one of a positive (+) vibration driving signal and a negative (-) vibration driving signal. As an embodiment of the present disclosure, the first vibration driving signal may be supplied to the first electrode layer 221b of the vibration portion 221 through the first terminal of the flexible cable 219, the first pad electrode of the pad portion 217, and the first power line PL1. The second vibration driving signal may be supplied to the second electrode layer 221c of the vibration portion 221 through the second terminal of the flexible cable 219, the second pad electrode of the pad portion 217, and the second power line PL2. As another embodiment of the present disclosure, the first vibration driving signal may be supplied to the second electrode layer 221c of the vibration portion 221 through the first terminal of the flexible cable 219, the second pad electrode of the pad portion 217, and the second power line PL2. The second vibration driving signal may be supplied to the first electrode layer 221b of the vibration portion 211 through the second terminal of the flexible cable 219, the first pad electrode of the pad portion 217, and the first power line PL1.

[0363] The bonding member 250 according to an embodiment of the present disclosure may be disposed between the first vibration generator 210 and the second vibration generator 230. For example, the bonding member 250 may be disposed between the first protection member 213 of the first vibration generator 210 and the second protection member 215 of the second vibration generator 230. For example, the bonding member 250 may include a material including a bonding layer having good adhesion or adhesiveness to the first vibration generator 210 and the second vibration generator 230. For example, the bonding member 250 may include a foam pad, a double-sided tape, or an adhesive, but the embodiments of the present disclosure are not limited thereto. For example, the bonding layer of the bonding member 250 may include an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane, but the embodiments of the present disclosure are not limited thereto.

[0364] In Figure 7 and Figure 8 and the related descriptions thereof, the vibration device 200 according to an embodiment of the present disclosure has been described as including a first vibration generator 210, a second vibration generator 230, and an adhesive member 250 disposed between the first vibration generator 210 and the second vibration generator 230. However, the embodiments of the present disclosure are not limited thereto. For example, the vibration device 200 according to an embodiment of the present disclosure may include a plurality (e.g., three or more) of vibration generators 210 and 230 and an adhesive member 250 disposed between the plurality of vibration generators 210 and 230 based on the sound pressure level characteristics and output characteristics of the sound generated based on the displacement of the display panel 100 such as the size and weight of the display panel 100. In this case, in order to maximize or increase the displacement amount or amplitude shift of the vibration device 200, the plurality of vibration generators 210 and 230 may have the same size and may overlap or stack. For example, the first and second portions (or ends, or outer surfaces, or each corner) 210a and 230a of each vibration portion 221 (or vibration layer 221a) of one or more of the plurality of vibration generators 210 and 230 may substantially overlap or stack without interleaving. For example, the first and second portions (or ends, or outer surfaces, or each corner) 210a and 230a of each vibration portion 221 (or vibration layer 221a) of one or more of the plurality of vibration generators 210 and 230 may substantially overlap or stack within the error range of the manufacturing process without interleaving. For example, the first and second portions (or ends, ends, outer surfaces, or each corner) 210a and 230a of each vibration portion 221 (or vibration layer 221a) of each of the plurality of vibration generators 210 and 230 may be aligned on a virtual extension line VL, or may be disposed at the virtual extension line VL. For example, the first and second portions (or ends, ends, outer surfaces, or each corner) 210a and 230a of each vibration portion 221 (or vibration layer 221a) of each of the plurality of vibration generators 210 and 230 may be accurately aligned on the virtual extension line VL, or may be accurately disposed at the virtual extension line VL.

[0365] Fig. 9 is another cross-sectional view taken along the line II-II' shown in Figure 3 .

[0366] Referring to Fig. 9 , in a vibration device according to another embodiment of the present disclosure, each of the first vibration generator 210 and the second vibration generator 230 may include at least one or more vibration structures 210A to 210D or a plurality of vibration structures 210A to 210D. Fig. 9An example including four vibration structures is shown, and each of the first vibration generator 210 and the second vibration generator 230 according to an embodiment of the present disclosure may be configured to include two or more vibration structures.

[0367] The plurality of vibration structures 210A to 210D may be electrically separated in each of the first direction X and the second direction Y and disposed to be spaced apart from each other.

[0368] Each of the multiple vibration structures 210A to 210D can contract and stretch alternately and / or repeatedly based on the piezoelectric effect, thereby vibrating. Each of the multiple vibration structures 210A to 210D can be arranged or tiled at specific intervals. Therefore, each of the first vibration generator 210 and the second vibration generator 230 tiled with multiple vibration structures 210A to 210D can be referred to as a vibration membrane, a displacement generator, a displacement membrane, a displacement structure, a sound generating structure, a sound generator, a tiled vibration array, a tiled vibration array module or a tiled vibration membrane, but the embodiments of the present disclosure are not limited thereto. The description of the multiple vibration structures 210A to 210D can be the same as that described above with reference to Figure 3 The descriptions given are substantially the same, and thus, a repeated description thereof may be omitted or briefly given.

[0369] Each of the first to fourth vibration structures 210A to 210D according to the embodiment of the present disclosure may include a vibration layer 211a, a first electrode layer 221b, and a second electrode layer 221c. The description of the vibration layer 221a, the first electrode layer 221b, and the second electrode layer 221c may be the same as that described above with reference to Figure 3 , Figure 4 , Figure 7 and Figure 8 The descriptions given are substantially the same, and thus, a repeated description thereof may be omitted or briefly given.

[0370] The vibration layer 221a may include a ceramic-based material capable of achieving relatively high vibration. For example, the vibration layer 221a may include a 1-3 composite structure having piezoelectric characteristics of a 1-3 vibration mode or a 2-2 composite structure having piezoelectric characteristics of a 2-2 vibration mode. For example, the vibration layer 221a may be similar to the above-mentioned Figure 3 The vibration portion 211 described above may be the same as, or may include, a first portion 211a and a second portion 211b, similar to the above reference FIG. 5A to FIG. 5F Described vibration layer 221a.

[0371] Each of the first vibration generator 210 and the second vibration generator 230 according to the embodiment of the present disclosure may further include a first protective member 1213 and a second protective member 1215 .

[0372] According to an embodiment of the present disclosure, the first protection member 1213 may be commonly disposed on the first surface of each of the plurality of vibration structures 210A to 210D through the first adhesive layer 1212. The second protection member 1215 may be commonly disposed on the second surface of each of the first vibration generator 210 and the second vibration generator 230. The first protection member 1213 and the second protection member 1215 may be substantially the same as the first protection member 213 and the second protection member 215 described above with reference to Figure 3 and Figure 4 and Figure 7 and Figure 8 and thus the description thereof is omitted.

[0373] The first adhesive layer 1212 may be disposed at the first surface of each of the plurality of vibration structures 210A to 210D and between the plurality of vibration structures 210A to 210D. For example, the first adhesive layer 1212 may be formed at the rear surface (or inner surface) of the first protection member 1213 facing the first surface of each of the first vibration generator 210 and the second vibration generator 230. For example, the first adhesive layer 1212 may be disposed at the first surface of each of the plurality of vibration structures 210A to 210D and filled between the plurality of vibration structures 210A to 210D.

[0374] The second adhesive layer 1214 may be disposed at the second surface of each of the plurality of vibration structures 210A to 210D and between the plurality of vibration structures 210A to 210D. For example, the second adhesive layer 1214 may be formed at the front surface (or inner surface) of the second protection member 1215 facing the second surface of each of the first vibration generator 210 and the second vibration generator 230. For example, the second adhesive layer 1214 may be disposed at the second surface of each of the plurality of vibration structures 210A to 210D and filled between the plurality of vibration structures 210A to 210D.

[0375] One or more of the first vibration generator 210 and the second vibration generator 230 according to another embodiment of the present disclosure may further include a first power line PL1, a second power line PL2, and a pad portion 1217.

[0376] The first power line PL1 may be disposed at the first protection member 1213. For example, the first power line PL1 may be disposed at the rear surface of the first surface of the first protection member 1213 facing each of the first vibration generator 210 and the second vibration generator 230. The first power line PL1 may be electrically connected to the first electrode layer 221b of each of the plurality of vibration structures 210A to 210D. For example, the first power line PL1 may be directly electrically connected to the first electrode layer 221b of each of the plurality of vibration structures 210A to 210D. For example, the first power line PL1 may be electrically connected to the first electrode layer 221b of each of the plurality of vibration structures 210A to 210D through an anisotropic conductive film. As another embodiment of the present disclosure, the first power line PL1 may be electrically connected to the first electrode layer 221b of each of the plurality of vibration structures 210A to 210D through a conductive material (or particles) included in the first adhesive layer 1212.

[0377] The first power line PL1 according to an embodiment of the present disclosure may include a first upper power line PL11 and a first upper power line PL12 disposed along the second direction Y. For example, the first upper power line PL11 may be electrically connected to the first electrode layer 221b of each of the first vibration structure 210A and the third vibration structure 210C (or the first group) among the plurality of vibration structures 210A to 210D. For example, the first vibration structure 210A and the third vibration structure 210C may be arranged in a first column parallel to the second direction Y among the plurality of vibration structures 210A to 210D. The first upper power line PL12 may be electrically connected to the first electrode layer 221b of each of the second vibration structure 210B and the fourth vibration structure 210D (or the second group) among the plurality of vibration structures 210B to 210D. For example, the second vibration structure 210B and the fourth vibration structure 210D may be provided in a second column parallel to the second direction Y among the plurality of vibration structures 210A to 210D.

[0378] The second power line PL2 may be disposed at the second protection member 1215. For example, the second power line PL2 may be disposed at a first surface of the second protection member 1215 that faces a second surface of each of the first vibration generator 210 and the second vibration generator 230. For example, the first surface of the second protection member 1215 may be a rear surface (or a lower surface) of the second protection member 1215. The second power line PL2 may be electrically connected to the second electrode layer 221c of each of the plurality of vibration structures 210A to 210D. For example, the second power line PL2 may be directly electrically connected to the second electrode layer 221c of each of the plurality of vibration structures 210A to 210D. For example, the second power line PL2 may be electrically connected to the second electrode layer 221c of each of the plurality of vibration structures 210A to 210D through an anisotropic conductive film. As another embodiment of the present disclosure, the second power line PL2 may be electrically connected to the second electrode layer 221c of each of the plurality of vibration structures 210A to 210D through a conductive material (or particles) included in the second adhesive layer 1214.

[0379] The second power line PL2 according to an embodiment of the present disclosure may include a first lower power line PL21 and a second lower power line PL22 disposed along the second direction Y. For example, the first lower power line PL21 may be electrically connected to the second electrode layer 221c of each of the first vibration structure 210A and the third vibration structure 210C (or the first group) among the plurality of vibration structures 210A to 210D. For example, the first vibration structure 210A and the third vibration structure 210C may be arranged in a first column parallel to the second direction Y among the plurality of vibration structures 210A to 210D. The second lower power line PL22 may be electrically connected to the second electrode layer 221c of each of the second vibration structure 210B and the fourth vibration structure 210D (or the second group) among the plurality of vibration structures 210B to 210D. For example, the second vibration structure 210B and the fourth vibration structure 210D may be disposed in a second column parallel to the second direction Y among the plurality of vibration structures 210A to 210D.

[0380] The pad portion 1217 may be electrically connected to the first power line PL1 and the second power line PL2. For example, the pad portion 1217 may be disposed at each of the first vibration generator 210 and the second vibration generator 230 to be electrically connected to a part (or one end) of at least one or more of the first power line PL1 and the second power line PL2.

[0381] The pad portion 1217 according to an embodiment of the present disclosure may include a first pad electrode electrically connected to a part of the first power line PL1 and a second pad electrode electrically connected to a part of the second power line PL2.

[0382] The first pad electrode may be commonly connected to a part (or one end) of each of the (1-1) upper power line PL11 and the (1-2) upper power line PL12 of the first power supply line PL1. For example, a part (or one end) of each of the (1-1) upper power line PL11 and the (1-2) upper power line PL12 may branch from the first pad electrode.

[0383] The second pad electrode may be commonly connected to a part (or one end) of each of the (2-1) lower power line PL21 and the (2-2) lower power line PL22 of the second power supply line PL2. For example, a part (or one end) of each of the (2-1) lower power line PL21 and the (2-2) lower power line PL22 may branch from the second pad electrode.

[0384] According to an embodiment of the present disclosure, one or more of the first power supply line PL1, the second power supply line PL2, and the pad portion 1217 may be configured as a transparent conductive material, a translucent conductive material, or an opaque conductive material, so as to be transparent, translucent, or opaque.

[0385] One or more of the first vibration generator 210 and the second vibration generator 230 according to another embodiment of the present disclosure may further include a flexible cable 1219.

[0386] The flexible cable 1219 may be electrically connected to the pad portion 1217 provided at each of the first vibration generator 210 and the second vibration generator 230, and may supply one or more vibration drive signals (or sound signals) provided from the vibration drive circuit to each of the first vibration generator 210 and the second vibration generator 230. The flexible cable 1219 according to an embodiment of the present disclosure may include a first terminal and a second terminal. The first terminal may be electrically connected to the first pad electrode of the pad portion 1217. The second terminal may be electrically connected to the second pad electrode of the pad portion 1217. For example, the flexible cable 1219 may be a flexible printed circuit cable or a flexible flat cable, but the embodiments of the present disclosure are not limited thereto.

[0387] Accordingly, a vibration device 200 according to another embodiment of the present disclosure may include a plurality of vibration structures 210A to 210D arranged (or tiled) at intervals D1 and D2 to be implemented as a single vibrator without being independently driven. Thus, it can be driven as a large-area vibrator based on the individual vibrations of the plurality of vibration structures 210A to 210D. For example, the plurality of vibration structures 210A to 210D may be a single vibrator arranged (or tiled) at specific intervals D1 and D2. Accordingly, the vibration device 200 can vibrate a large area of the display panel or vibrate itself in a large area, thereby increasing or enhancing the sound characteristics and sound pressure level characteristics in the bass tone band and reproduction band of the sound output from the display panel.

[0388] Fig.10 shows Figure 7 the vibration layer of the vibration generator shown.

[0389] Referring to Fig.10 , in the vibration part 221 of each of the vibration generators 210 and 230 according to an embodiment of the present disclosure, the vibration layer 221a may include a plurality of first parts 221a1 and a plurality of second parts 221a2. For example, the plurality of first parts 221a1 and the plurality of second parts 221a2 may be alternately and repeatedly arranged along the first direction X (or the second direction Y). For example, the first direction X may be the width direction of the vibration part 221, and the second direction Y may be the length direction of the vibration part 221, but the embodiments of the present disclosure are not limited thereto. For example, the first direction X may be the length direction of the vibration part 221, and the second direction Y may be the width direction of the vibration part 221.

[0390] Each of the plurality of first parts 221a1 may be configured as an inorganic material part. The inorganic material part may include the piezoelectric material described above. For example, each of the plurality of first parts 221a1 may include a piezoelectric material, which is substantially the same as the vibration part 211 described above with reference to FIG. 5A to FIG. 5F , and thus, the repeated description thereof may be omitted.

[0391] Each of the plurality of first parts 221a1 according to an embodiment of the present disclosure may be disposed between the plurality of second parts 221a2. Each of the plurality of first parts 221a1 and the plurality of second parts 221a2 may include a piezoelectric material, which is substantially the same as the plurality of first parts 221a1 and the plurality of second parts 221a2 described above with reference to FIG. 5A to FIG. 5F , and thus, the repeated description thereof may be omitted.

[0392] To maximize or increase the displacement amount or amplitude shift of the vibration device 200, the vibration part 221 of the first vibration generator 210 and the vibration part 221 of the second vibration generator 230 may have the same size and may overlap (or stack) with each other. For example, the first part (or end, or outer surface, or each corner) 210a of the vibration part 221 (or vibration layer 221a) of the first vibration generator 210 may be substantially aligned or overlapped with the second part (or end, or outer surface, or each corner) 230a of each vibration part 221 (or vibration layer 221a) of the second vibration generator 230 without interleaving. For example, the first part (or end, or outer surface, or each corner) 210a of the vibration part 221 (or vibration layer 221a) of the first vibration generator 210 may be substantially aligned or overlapped with the second part (or end, or outer surface, or each corner) 230a of each vibration part 221 (or vibration layer 221a) of the second vibration generator 230 within the manufacturing process error range without interleaving. For example, the first part (or end, or outer surface, or each corner) 210a of each vibration part 221 (or vibration layer 221a) of the first vibration generator 210 may be aligned on the first virtual extension line VL1 or may be disposed at the first virtual extension line VL1. The second part (or end, or outer surface, or each corner) 230a of each vibration part 221 (or vibration layer 221a) of the second vibration generator 230 may be precisely aligned on the first virtual extension line VL1 or may be precisely disposed at the first virtual extension line VL1. The second part (or end, or outer surface, or each corner) 230a of each vibration part 221 (or vibration layer 221a) of the second vibration generator 230 may be aligned on the first virtual extension line VL1 or may be disposed at the first virtual extension line VL1. The second part (or end, or outer surface, or each corner) 230a of each vibration part 221 (or vibration layer 221a) of the second vibration generator 230 may be precisely aligned on the first virtual extension line VL1 or may be precisely disposed at the first virtual extension line VL1.

[0393] According to another embodiment of the present disclosure, the plurality of first portions 221a1 of the first vibration generator 210 and the plurality of first portions 221a1 of the second vibration generator 230 may have the same size as each other, and may substantially overlap or stack with each other. For example, the plurality of first portions 221a1 of the first vibration generator 210 and the plurality of first portions 221a1 of the second vibration generator 230 may have the same size as each other, and may substantially overlap or stack without interleaving. According to an embodiment of the present disclosure, the first portion of each of the plurality of first portions 221a1 included in the first vibration generator 210 may substantially overlap or stack with the first portion of each of the plurality of first portions 221a1 included in the second vibration generator 230. For example, the first portion of each of the plurality of first portions 221a1 included in the first vibration generator 210 may substantially overlap or stack with the first portion of each of the plurality of first portions 221a1 included in the second vibration generator 230 without interleaving. For example, the first portion of each of the plurality of first portions 221a1 included in the first vibration generator 210 and the first portion of each of the plurality of first portions 221a1 included in the second vibration generator 230 may be aligned on the second virtual extension line VL2 or disposed at the second virtual extension line VL2. For example, the first portion of each of the plurality of first portions 221a1 included in the first vibration generator 210 and the first portion of each of the plurality of first portions 221a1 included in the second vibration generator 230 may be precisely aligned on the second virtual extension line VL2 or precisely disposed at the second virtual extension line VL2 without interleaving.

[0394] According to another embodiment of the present disclosure, the plurality of second portions 221a2 of the first vibration generator 210 and the plurality of second portions 221a2 of the second vibration generator 230 may have the same size as each other, and may substantially overlap or stack with each other. For example, the plurality of second portions 221a2 of the first vibration generator 210 and the plurality of second portions 221a2 of the second vibration generator 230 may have the same size as each other, and may substantially overlap or stack without interleaving. According to an embodiment of the present disclosure, a first portion (or end) 210a of each of the plurality of second portions 221a2 included in the first vibration generator 210 may substantially overlap or stack with a second portion (or end) 230a of each of the plurality of second portions 221a2 included in the second vibration generator 230. For example, a first portion (or end) 210a of each of the plurality of second portions 221a2 included in the first vibration generator 210 may substantially overlap or stack with a second portion (or end) 230a of each of the plurality of second portions 221a2 included in the second vibration generator 230 without interleaving. For example, a first portion (or end) 210a of each of the plurality of second portions 221a2 included in the first vibration generator 210 and a second portion (or end) 230a of each of the plurality of second portions 221a2 included in the second vibration generator 230 may be aligned on a second virtual extension line VL2 or disposed at the second virtual extension line VL2. For example, a first portion (or end) 210a of each of the plurality of second portions 221a2 included in the first vibration generator 210 and a second portion (or end) 230a of each of the plurality of second portions 221a2 included in the second vibration generator 230 may be precisely aligned on the second virtual extension line VL2 or precisely disposed at the second virtual extension line VL2 without interleaving. Therefore, in the vibration device 200 according to an embodiment of the present disclosure, the vibration layers 221a of the first vibration generator 210 and the vibration layers 221a of the second vibration generator 230 may be displaced in the same direction. Thus, the displacement amount or amplitude shift of the vibration device 200 may be maximized or increased, thereby increasing (or maximizing) the displacement amount (or bending force or flexural force) or amplitude shift of the display panel 100.

[0395] In Fig.10In the description thereof and the related description, the vibration device 200 according to another embodiment of the present disclosure has been described as including a first vibration generator 210 and a second vibration generator 230, but the embodiments of the present disclosure are not limited thereto. For example, the vibration device 200 according to another embodiment of the present disclosure may include a plurality (e.g., three or more) of vibration generators 210 and 230. In this case, in order to maximize or increase the displacement amount or amplitude shift of the vibration device 200, the plurality of vibration generators 210 and 230 may have the same size and may overlap or stack with each other. According to an embodiment of the present disclosure, a first portion 221a1 of the vibration generator 210 disposed in the upper layer (or top layer) among the three or more vibration generators 210 and 230 and a first portion 221a1 of the vibration generator 230 disposed in the lower layer (or bottom layer) among the three or more vibration generators 210 and 230 may substantially overlap or stack with each other. For example, a first portion 221a1 of the vibration generator 210 disposed in the upper layer among the three or more vibration generators 210 and 230 and a first portion 221a1 of the vibration generator 230 disposed in the lower layer among the three or more vibration generators 210 and 230 may substantially overlap or stack without interleaving. For example, a first portion 221a1 of the vibration generator 210 disposed in the upper layer among the three or more vibration generators 210 and 230 and a first portion 221a1 of the vibration generator 230 disposed in the lower layer among the three or more vibration generators 210 and 230 may be aligned on a virtual extension line VL or disposed at the virtual extension line VL. For example, a first portion 221a1 of the vibration generator 210 disposed in the upper layer among the three or more vibration generators 210 and 230 and a first portion 221a1 of the vibration generator 230 disposed in the lower layer among the three or more vibration generators 210 and 230 may be precisely aligned on the virtual extension line VL or precisely disposed at the virtual extension line VL. For example, a first portion 221a1 of the vibration generator 210 disposed closer to the front surface of the display panel 100 overlaps with a first portion 221a1 of another vibration generator 230 disposed not close to the front surface of the display panel 100. In addition, a second portion 221a2 of the vibration generator 210 disposed in the upper layer among the three or more vibration generators 210 and 230 and a second portion 221a2 of the vibration generator 230 disposed in the lower layer among the three or more vibration generators 210 and 230 may substantially overlap or stack with each other. For example, a second portion 221a2 of the vibration generator 210 disposed in the upper layer among the three or more vibration generators 210 and 230 and a second portion 221a2 of the vibration generator 230 disposed in the lower layer among the three or more vibration generators 210 and 230 may substantially overlap or stack without interleaving.For example, the second part 221a2 of the vibration generator 210 disposed in the upper layer among the three or more vibration generators 210 and 230 and the second part 221a2 of the vibration generator 230 disposed in the lower layer among the three or more vibration generators 210 and 230 may be aligned on the virtual extension line VL or disposed at the virtual extension line VL. For example, the second part 221a2 of the vibration generator 210 disposed in the upper layer among the three or more vibration generators 210 and 230 and the second part 221a2 of the vibration generator 230 disposed in the lower layer among the three or more vibration generators 210 and 230 may be precisely aligned on the virtual extension line VL or precisely disposed at the virtual extension line VL. For example, the second part 221a2 of the vibration generator 210 disposed closer to the front surface of the display panel 100 overlaps with the second part 221a2 of another vibration generator 230 disposed not close to the front surface of the display panel 100.

[0396] Fig.11 The figure shows a device according to another embodiment of the present disclosure. Fig.12 is a cross-sectional view taken along Fig.11 the line IV-IV' shown in

[0397] Referring to Fig.11 and Fig.12 In a device according to another embodiment of the present disclosure, the rear surface (or back surface) of the display panel 100 may include a first region (or first rear region) A1 and a second region (or second rear region) A2. For example, in the rear surface of the display panel 100, the first region A1 may be a left rear region, and the second region A2 may be a right rear region. The first region A1 and the second region A2 may be symmetric about the center line CL of the display panel 100 in the first direction X, but the embodiments of the present disclosure are not limited thereto. For example, each of the first region A1 and the second region A2 may overlap with the display region of the display panel 100.

[0398] A vibration device 200 according to another embodiment of the present disclosure may include a first vibration device 210-1 and a second vibration device 210-2 disposed at the rear surface of the display panel 100.

[0399] The first vibration device 210-1 may be disposed at the first area A1 of the display panel 100. For example, the first vibration device 210-1 may be disposed relative to the first direction X near the center or the periphery within the first area A1 of the display panel 100. The first vibration device 210-1 according to an embodiment of the present disclosure may vibrate the first area A1 of the display panel 100, and thus may generate a first vibration sound PVS1 or a first haptic feedback in the first area A1 of the display panel 100. For example, the first vibration device 210-1 according to an embodiment of the present disclosure may directly vibrate the first area A1 of the display panel 100, and thus, a first vibration sound PVS1 or a first haptic feedback may be generated in the first area A1 of the display panel 100. For example, the first vibration sound PVS1 may be a left sound. Based on the characteristics of the first vibration sound PVS1 or the sound characteristics required by the device, the size of the first vibration device 210-1 according to an embodiment of the present disclosure may have a size corresponding to half or less of the first area A1 or half or more of the first area A1. As another embodiment of the present disclosure, the size of the first vibration device 210-1 may have a size corresponding to the first area A1 of the display panel 100. For example, the size of the first vibration device 210-1 may have the same size as the first area A1 of the display panel 100, or may have a size smaller than the first area A1 of the display panel 100.

[0400] The second vibration device 210-2 may be disposed at the second area A2 of the display panel 100. For example, the second vibration device 210-2 may be disposed relative to the first direction X near the center or the periphery within the second area A2 of the display panel 100. The second vibration device 210-2 according to an embodiment of the present disclosure may vibrate the second area A2 of the display panel 100, and thus may generate a second vibration sound PVS2 or a second haptic feedback in the second area A2 of the display panel 100. For example, the second vibration device 210-2 according to an embodiment of the present disclosure may directly vibrate the second area A2 of the display panel 100, and thus may generate a second vibration sound PVS2 or a second haptic feedback in the second area A2 of the display panel 100. For example, the second vibration sound PVS2 may be a right sound. Based on the characteristics of the second vibration sound PVS2 or the sound characteristics required by the device, the size of the second vibration device 210-2 according to an embodiment of the present disclosure may have a size corresponding to half or less of the second area A2 or half or more of the second area A2. As another embodiment of the present disclosure, the size of the second vibration device 210-2 may have a size corresponding to the second area A2 of the display panel 100. For example, the size of the second vibration device 210-2 may have the same size as the second area A2 of the display panel 100, or may have a size smaller than the second area A2 of the display panel 100. Therefore, the first vibration device 210-1 and the second vibration device 210-2 may have the same size or different sizes from each other based on the sound characteristics of the left sound and the right sound and / or the sound characteristics of the device. Also, the first vibration device 210-1 and the second vibration device 210-2 may be disposed in a left-right symmetric structure or a left-right asymmetric structure with respect to the center line CL of the display panel 100.

[0401] Each of the first vibration device 210-1 and the second vibration device 210-2 may include one or more of the vibration devices 200 described above with reference to Figures 2 to 5F Therefore, its repeated description may be omitted.

[0402] The connection member 150 according to an embodiment of the present disclosure may be disposed between each of the first vibration device 210-1 and the second vibration device 210-2 and the rear surface of the display panel 100. For example, each of the first vibration device 210-1 and the second vibration device 210-2 may be disposed at the rear surface of the display panel 100 through the connection member 150. The connection member 150 may be substantially the same as the connection member 150 described above with reference to Figure 2 Therefore, its repeated description may be omitted.

[0403] Accordingly, the device according to another embodiment of the present disclosure can output a left sound PVS1 and a right sound PVS2 to a forward area in front of the display panel 100 through the first vibration device 210-1 and the second vibration device 210-2 to provide sound to a user.

[0404] Fig.13 is another cross-sectional view taken along the line IV-IV' shown in Fig.11 and shows an embodiment in which a further plate is configured in the device shown in Fig.12 Accordingly, hereinafter, a repeated description of elements other than the plate and elements related thereto will be omitted or given briefly.

[0405] Referring to Fig.13 , the device according to another embodiment of the present disclosure can include a display panel 100 and a vibration device 200, and can further include a plate 170 disposed between the display panel 100 and the vibration device 200.

[0406] Each of the display panel 100 and the vibration device 200 can be substantially the same as each of the display panel 100 and the vibration device 200 described above with reference to Figures 2 to 5F , and thus, a repeated description thereof can be omitted or given briefly.

[0407] The plate 170 can be disposed between each of the first vibration device 210-1 and the second vibration device 210-2 of the vibration device 200 and the rear surface of the display panel 100.

[0408] The plate 170 can dissipate heat generated from the display panel 100, or can enhance the mass of the vibration device 200 disposed at or suspended from the rear surface of the display panel 100. The plate 170 can have the same shape and size as the rear surface of the display panel 100, or can have the same shape and size as the vibration device 200. As another embodiment of the present disclosure, the plate 170 can have a size different from that of the display panel 100. For example, the plate 170 can be smaller than the size of the display panel 100. As another embodiment of the present disclosure, the plate 170 can have a size different from that of the vibration device 200. For example, the plate 170 can be larger or smaller than the size of the vibration device 200. The vibration device 200 can have the same size as the display panel 100 or be smaller than the size of the display panel 100.

[0409] The plate 170 according to an embodiment of the present disclosure can include a metal material. For example, the plate 170 can include one or more materials such as stainless steel, aluminum (Al), magnesium (Mg), magnesium alloy, magnesium-lithium (Mg-Li) alloy, and aluminum alloy, but the embodiments of the present disclosure are not limited thereto.

[0410] According to an embodiment of the present disclosure, the plate 170 may include a plurality of opening portions. The plurality of opening portions may be configured to have a predetermined size and a predetermined interval. For example, the plurality of opening portions may be arranged along a first direction X and a second direction Y to have a predetermined size and a predetermined interval. Due to the plurality of opening portions, sound waves (or sound pressure) based on the vibration of the vibration device 200 may not be dispersed by the plate 170 and may be concentrated on the display panel 100. Accordingly, the loss of vibration caused by the plate 170 may be minimized, thereby enhancing the sound pressure level characteristics of the sound generated based on the vibration of the display panel 100. For example, the plate 170 including a plurality of openings may have a mesh shape. For example, the plate 170 including a plurality of openings may be a mesh plate.

[0411] According to some embodiments of the present disclosure, the plate 170 may be connected or coupled to the rear surface of the display panel 100. For example, when the display panel 100 is a light-emitting display panel, the plate 170 may be disposed at the rear surface of the encapsulation portion of the light-emitting display panel. The plate 170 may be configured to be disposed at the rear surface of the encapsulation portion or a structure joined to the rear surface of the encapsulation portion. The plate 170 may dissipate heat generated in the display panel 100. For example, the plate 170 may be referred to as a heat dissipation member, a heat dissipation plate, or a heat sink, but embodiments of the present disclosure are not limited thereto. For example, when the plate 170 is configured to be disposed at the rear surface of the encapsulation portion or a structure joined to the rear surface of the encapsulation portion, the first support member 310 may be omitted.

[0412] According to an embodiment of the present disclosure, the plate 170 may increase the mass of the vibration device 200 disposed at or suspended from the rear surface of the display panel 100. Accordingly, the plate 170 may lower the resonance frequency of the vibration device 200 based on the increase in the mass of the vibration device 200. Accordingly, the plate 170 may increase the sound characteristics and sound pressure level characteristics of the low-pitched vocal cords generated based on the vibration of the vibration device 200, and may enhance the flatness of the sound pressure level characteristics. For example, the flatness of the sound pressure level characteristics may be the magnitude of the deviation between the highest sound pressure level and the lowest sound pressure level. For example, the plate 170 may be referred to as a counterweight member, a mass member, a sound flattening member, etc., but embodiments of the present disclosure are not limited thereto.

[0413] According to an embodiment of the present disclosure, based on the stiffness of the plate 170, the displacement amount (or bending force or flexural force) or amplitude displacement (or vibration width) of the display panel 100 in which the plate 170 is disposed may decrease as the thickness of the plate 170 increases. Accordingly, the sound pressure level characteristics and low-pitched vocal cord characteristics of the sound generated based on the displacement (or vibration) of the display panel 100 may be enhanced.

[0414] The board 170 according to an embodiment of the present disclosure can be coupled or connected to the rear surface of the display panel 100 through a board connection member (or fourth connection member) 190.

[0415] The board connection member 190 according to an embodiment of the present disclosure may include a material including an adhesive layer that has good adhesion or adhesiveness to the rear surfaces of the display panel 100 and the vibration device 200, respectively. For example, the board connection member 190 may include a foam pad, a double-sided tape, or an adhesive, but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the board connection member 190 may include an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane, but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the board connection member 190 may be the same as the adhesive layer of the connection member 150, but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the board connection member 190 may include an acrylic-based material that has relatively better adhesiveness and hardness among acrylic-based materials and polyurethanes, so that the vibration of the vibration device 200 can be well transmitted to the display panel 100. As another embodiment of the present disclosure, the adhesive layer of the board connection member 190 may be different from the adhesive layer of the connection member 150.

[0416] The vibration device 200 can be connected or coupled to the rear surface of the board 170 through the above-described connection member 150 and, accordingly, can be supported or suspended at the rear surface of the board 170. Each of the first vibration device 210-1 and the second vibration device 210-2 of the vibration device 200 can be connected or coupled to the rear surface of the board 170 by using the above-described connection member 150 and, accordingly, can be supported or suspended at the rear surface of the board 170.

[0417] The board 170 according to an embodiment of the present disclosure can be integrated into the vibration device 200 or can be provided as an element of the vibration device 200. For example, the board 170 and the vibration device 200 can be configured to be one structure or one assembly (or module) provided integrally. Accordingly, when the board 170 is disposed between the rear surface of the display panel 100 and the vibration device 200, based on the component integration (or modularization) between the board 170 and the vibration device 200, the assembly process between the display panel 100 and the vibration device 200 can be easily performed.

[0418] As another embodiment of the present disclosure, in a case where the plate 170 and the vibration device 200 are configured as one structure or one component (or module) to be provided integrally, the non-display panel may be configured as a vibration plate. The plate 170 and the vibration device 200 may be provided at the non-display panel. The plate 170 and the vibration device 200 may be connected or coupled to the non-display panel through a connecting member. For example, the non-display panel may be wood, plastic, glass, cloth, vehicle interior material, building interior ceiling, aircraft interior material, etc., but the embodiments of the present disclosure are not limited thereto. Accordingly, sound may be output by vibrating the non-display panel. As another embodiment of the present disclosure, in a case where the plate 170 and the vibration device 200 are configured as one structure or one component (or module) to be provided integrally, the plate 170 may be configured as a vibration plate. For example, the plate 170 may include one or more materials among stainless steel, aluminum (Al), magnesium (Mg), magnesium alloy, magnesium-lithium (Mg-Li) alloy, and aluminum alloy, but the embodiments of the present disclosure are not limited thereto. For example, in the module (or structure) of the plate 170 and the vibration device 200, the plate 170 may include a single non-metallic material or a composite non-metallic material of one or more among wood, plastic, glass, cloth, and leather, but the embodiments of the present disclosure are not limited thereto.

[0419] Accordingly, an apparatus according to another embodiment of the present disclosure may output a left sound PVS1 and a right sound PVS2 to a forward region in front of the display panel 100 through the first vibration device 210-1 and the second vibration device 210-2 to provide sound to a user. In addition, in this apparatus, the resonance frequency of the vibration device 200 may be reduced by the plate 170, and heat generated from the display panel 100 may be dissipated through the plate 170.

[0420] Fig.14 is along Fig.11 Another cross-sectional view taken along line IV-IV' shown in Fig.15 is along Fig.11 Another cross-sectional view taken along line IV-IV' shown in Fig.15 shows an embodiment in which a plate is further configured in the apparatus shown in Fig.14

[0421] Referring to Fig.14 and Fig.15 , a vibration device 200 according to another embodiment of the present disclosure may include a first vibration device 210-1 and a second vibration device 210-2 provided at a rear surface of the display panel 100. Each of the first vibration device 210-1 and the second vibration device 210-2 may include one or more of the vibration devices 200 described above with reference to Figures 6 to 10 Each of the display panel 100 and the vibration device 200 may be the same as those described above with reference to​ Figures 6 to 10 The described display panel 100 and the vibration device 200 are substantially the same, so the repetitive descriptions thereof may be omitted or given briefly. The description of the plate 170 may be substantially the same as the description given above with reference to Fig.13 the description given, so the description thereof is omitted or given briefly.

[0422] The vibration device 200 according to an embodiment of the present disclosure may include a plurality of vibration generators 210 and 230 having a first size and overlapping or stacked with each other, so as to minimize the reduction in the amount of displacement of the display panel 100 caused by the thickness of the plate 170. In addition, the vibration device 200 according to an embodiment of the present disclosure may include a plurality of vibration generators 210 and 230 having a first size and overlapping, so that the amount of displacement of the display panel 100 may be increased or maximized, thereby increasing or enhancing the sound pressure level characteristics and the bass tone band characteristics of the sound generated based on the displacement of the display panel 100. Therefore, in a device according to another embodiment of the present disclosure, the vibration device 200 may increase or maximize the amount of displacement of the display panel 100 in which the plate 170 is provided based on the stacked structure of the vibration generators 210 and 230 overlapping or stacked with each other. The plate 170 may have a thickness that allows the heat of the display panel 100 to dissipate smoothly.

[0423] The plate 170 according to an embodiment of the present disclosure may be connected or coupled to the front surface of the vibration device 200 through the above-described connection member 150. For example, the plate 170 may be connected or coupled to the uppermost vibration generator among the plurality of vibration generators 210 and 230 of the vibration device 200 through the connection member 150. For example, when the vibration device 200 includes a first vibration generator 210 and a second vibration generator 230, the plate 170 may be connected or coupled to the first surface of the second vibration generator 230 or the second surface of the first vibration generator 210 through the connection member 150.

[0424] Therefore, in a device according to another embodiment of the present disclosure, as described above with reference to Figures 6 to 10 the sound pressure level characteristics and the bass tone band characteristics of the sound generated based on the displacement of the display panel 100 may be increased or enhanced based on the stacked structure of the vibration generators 210 and 230. In addition, in a device according to another embodiment of the present disclosure, the resonant frequency of the vibration device 200 may be reduced by the plate 170, and the heat of the display panel 100 may be dissipated by the plate 170.

[0425] Fig.16 A device according to another embodiment of the present disclosure is shown, and it is shown that in Figures 11 to 13Embodiments in which a separator is further configured in the device shown in [the accompanying drawings] are described. Therefore, hereinafter, repeated descriptions of elements other than the separator and elements related thereto will be omitted or given briefly.

[0426] Referring to Figures 11 to 13 and Fig.16 , a device according to an embodiment of the present disclosure may further include a separator 600 configured to divide a first region A1 and a second region A2 of the display panel 100.

[0427] The separator 600 may be an air gap or a space in which sound PVS1 and PVS2 are generated when the display panel 100 is vibrated by the first vibration device 210-1 and the second vibration device 210-2. For example, the separator 600 may separate the sound PVS1 and PVS2 or sound channels, and may prevent or reduce a degradation of sound characteristics caused by interference between the sound PVS1 and PVS2. The separator 600 may be referred to as a sound blocking member, a sound separating member, a space separating member, a housing, a baffle, or the like, but embodiments of the present disclosure are not limited thereto.

[0428] The separator 600 according to an embodiment of the present disclosure may include a first separator member 610 and a second separator member 620 disposed between the first vibration device 210-1 and the second vibration device 210-2.

[0429] The first partition member 610 and the second partition member 620 may be disposed between the display panel 100 and the support member 300. For example, the first partition member 610 and the second partition member 620 may be disposed between the display panel 100 and the support member 300 corresponding to the central region of the display panel 100. The first partition member 610 and the second partition member 620 may separate the first vibration sound PVS1 generated by the first vibration device 210-1 and the second vibration sound PVS2 generated by the second vibration device 210-2. For example, the first partition member 610 and the second partition member 620 may block the transmission of the vibration generated by the first vibration generating device 210-L in the first region A1 of the display panel 100 to the second region A2 of the display panel 100, or may block the transmission of the vibration generated by the second vibration generating device 210-R in the second region A2 of the display panel 100 to the first region A1 of the display panel 100. Therefore, the first partition member 610 and the second partition member 620 may attenuate or absorb the vibration of the display panel 100 at the center of the display panel 100. Therefore, the first partition member 610 and the second partition member 620 may block the transmission of the sound in the first region A1 to the second region A2, or may prevent the transmission of the sound in the second region A2 to the first region A1. Therefore, the first partition member 610 and the second partition member 620 may separate the left sound and the right sound to further enhance the sound output characteristics of the device. Therefore, the device according to the embodiment of the present disclosure may output a sound of a stereo type to the forward region in front of the display panel 100 by separating the left sound and the right sound according to the first partition member 610 and the second partition member 620.

[0430] For example, the partition member 600 may include a material having elasticity capable of achieving a certain degree of compression. For example, the partition member 600 may be configured as polyurethane, polyolefin, etc., but the embodiments of the present disclosure are not limited thereto. As another embodiment of the present disclosure, the partition member 600 may be configured as a single-sided tape, a single-sided foam pad, a double-sided tape, a double-sided foam tape, etc., but the embodiments of the present disclosure are not limited thereto.

[0431] For example, any one of the first partition member 610 and the second partition member 620 may be omitted. For example, even if any one of the first partition member 610 and the second partition member 620 is located between the first vibration device 210-1 and the second vibration device 210-2, the left sound and the right sound may be separated from each other. For example, when the second partition member 620 among the first partition member 610 and the second partition member 620 is omitted, the first partition member 610 may be disposed between the support member 300 and the display panel 100 corresponding to the rear center line CL of the display panel 100.

[0432] Therefore, the first partition member 610 or the second partition member 620 can separate the left and right sounds to further enhance the sound output characteristics of the device. A device including the first partition member 610 or the second partition member 620 can separate the left and right sounds through the first partition member 610 or the second partition member 620 to output a sound of a stereo type to the front region in front of the display panel 100.

[0433] The partition member 600 according to an embodiment of the present disclosure may further include a third partition member 630 between the display panel 100 and the support member 300.

[0434] The third partition member 630 may be arranged to surround all of the first vibration device 210-1 and the second vibration device 210-2. The third partition member 630 may be disposed between the rear periphery of the display panel 100 and the front periphery of the support member 300. The third partition member 630 may be referred to as an edge partition, a sound blocking member, an edge housing, an edge baffle, etc., but the embodiments of the present disclosure are not limited thereto. For example, the third partition member 630 may be adjacent to or in contact with Fig.11 the first frame connection member 401 shown and may be surrounded by the first frame connection member 401. As another embodiment of the present disclosure, the third partition member 630 may be integrated with the first frame connection member 401.

[0435] The third partition member 630 may provide a first air gap AG1 to a third air gap AG3 between the display panel 100 and the support member 300 together with the first partition member 610 and the second partition member 620. For example, each of the first air gap AG1 to the third air gap AG3 may be referred to as a vibration space, a sound pressure space, a speaker box, a sound part, a resonance box, or a resonance part, but the embodiments of the present disclosure are not limited thereto.

[0436] The first air gap AG1 may be disposed in the first area A1 of the display panel 100. For example, the first air gap AG1 may be disposed in the first area A1 of the display panel 100, and the first area A1 is surrounded by the first partition member 610 and the third partition member 630 disposed at the first area A1 of the display panel 100.

[0437] The second air gap AG2 may be disposed in the second area A2 of the display panel 100. For example, the second air gap AG2 may be disposed in the second area A2 of the display panel 100, and the second area A2 is surrounded by the second partition member 620 and the third partition member 630 disposed at the second area A2 of the display panel 100.

[0438] The third air gap AG3 may be disposed in a rear center region of the display panel 100. For example, the third air gap AG3 may be disposed in a rear center region of the display panel 100 surrounded by the first partition member 610, the second partition member 620, and the third partition member 630. For example, the third air gap AG3 may be disposed between the second air gap AG2 and the first air gap AG1, including the rear center line CL of the display panel 100. The third air gap AG3 may be referred to as a sound separation space, a sound blocking space, a sound interference prevention space, etc., but embodiments of the present disclosure are not limited thereto. The third air gap AG3 may separate the first air gap AG1 from the second air gap AG2. Thus, the third air gap AG3 may reduce or prevent a resonance phenomenon or an interference phenomenon in a specific frequency band generated in each of the first air gap AG1 and the second air gap AG2.

[0439] The first vibration device 210-1 may be surrounded by the first partition member 610 and the third partition member 630 providing the first air gap AG1. The second vibration device 210-2 may be surrounded by the second partition member 620 and the third partition member 630 providing the second air gap AG2.

[0440] When one of the first partition member 610 and the second partition member 620 is omitted, the third air gap AG3 may be omitted.

[0441] Thus, the third partition member 630 may surround the region between the display panel 100 and the support member 300, and may separately surround each of the first vibration device 210-1 and the second vibration device 210-2 together with the first partition member 610 and the second partition member 620 to ensure a vibration space for each of the first vibration device 210-1 and the second vibration device 210-2. Thus, the third partition member 630 may enhance the sound pressure level characteristics of the left sound and the right sound. In addition, the third partition member 630 may prevent sound or the sound pressure level from leaking to the outside through a side surface between the display panel 100 and the support member 300, thereby further enhancing the sound output characteristics of the device.

[0442] The partition member 600 according to an embodiment of the present disclosure may further include a fourth partition member 640 and a fifth partition member 650. The fourth partition member (or the first housing) 640 may surround the first vibration device 210-1. The fifth partition member (or the second housing) 650 may surround the second vibration device 210-2.

[0443] The fourth partition member 640 may be disposed between the display panel 100 and the support member 300 to correspond to the first air gap AG1. For example, the fourth partition member 640 may individually (or independently) surround the first vibration device 210-1. The fourth partition member 640 according to an embodiment of the present disclosure may have a rectangular shape surrounding the first vibration device 210-1, but the embodiments of the present disclosure are not limited thereto. For example, the fourth partition member 640 may have a shape the same as or different from the overall shape of the first vibration device 210-1. For example, when the first vibration device 210-1 has a square shape, the fourth partition member 640 may have a square shape, a circular shape, or an oval shape, the size of which is relatively larger than that of the first vibration device 210-1.

[0444] The fourth partition member 640 may limit (or define) the vibration area (or vibration region) of the display panel 100 based on the first vibration device 210-1. For example, in the first region A1 of the display panel 100, as the size of the fourth partition member 640 increases, the vibration area of the first region A1 may increase. Therefore, the bass vocal cord characteristics of the left sound can be enhanced. As another embodiment of the present disclosure, in the first region A1 of the display panel 100, as the size of the fourth partition member 640 decreases, the vibration area of the first region A1 may decrease. Therefore, the treble vocal cord characteristics of the left sound can be enhanced. Therefore, the size of the fourth partition member 640 may be adjusted based on the desired characteristics of the vocal cord and the vibration of the display panel 100 caused by the vibration of the first vibration device 210-1.

[0445] The fifth partition member 650 may be disposed between the display panel 100 and the support member 300 to correspond to the second air gap AG2. The fifth partition member 650 may individually (or independently) surround the second vibration device 210-2. In order to make the left sound symmetrical with the right sound, the fifth partition member 650 according to an embodiment of the present disclosure may have the same shape as the fourth partition member 640 and may have a structure symmetrical to the fourth partition member 640 with respect to the rear center line CL of the display panel 100.

[0446] The fifth partition member 650 may limit (or define) the vibration area (or vibration areas) of the display panel 100 based on the second vibration device 210-2. For example, in the second area A2 of the display panel 100, as the size of the fifth partition member 650 increases, the vibration area of the second area A2 may increase. Accordingly, the bass vocal cord characteristics of the left sound may be enhanced. As another embodiment of the present disclosure, in the second area A2 of the display panel 100, as the size of the fifth partition member 650 decreases, the vibration area of the second area A2 may decrease. Accordingly, the treble vocal cord characteristics of the right sound may be enhanced. Accordingly, the size of the fifth partition member 650 may be adjusted based on the desired characteristics of the vocal cords and the vibration of the display panel 100 caused by the vibration of the second vibration device 210-2.

[0447] The fourth partition member 640 and the fifth partition member 650 may limit the vibration area (or vibration areas) of each of the first vibration device 210-1 and the second vibration device 210-2. Accordingly, the fourth partition member 640 and the fifth partition member 650 may enhance the lateral symmetry of the left sound and the right sound respectively generated based on the vibration of the display panel 100, and may optimize the sound pressure level characteristics and the sound reproduction frequency band of each of the left sound and the right sound. For example, when the fourth partition member 640 and the fifth partition member 650 are provided, the third partition member 630 may be omitted. As another embodiment of the present disclosure, when the fourth partition member 640 and the fifth partition member 650 are provided, one or more of the first partition member 610 to the third partition member 630 may be omitted.

[0448] Accordingly, the device according to another embodiment of the present disclosure includes the partition member 600, and thus, the sound pressure level characteristics and the sound reproduction frequency band of each of the left sound and the right sound may be optimized. For example, the device according to another embodiment of the present disclosure may include at least one or more of the first partition member 610 and the second partition member 620, but the embodiments of the present disclosure are not limited thereto. For example, the device according to another embodiment of the present disclosure may include the third partition member 630 and at least one or more of the first partition member 610 and the second partition member 620. For example, the device according to another embodiment of the present disclosure may include the third partition member 630, the fourth partition member 640, and the fifth partition member 650. For example, the device according to another embodiment of the present disclosure may include all of the first partition member 610 to the fifth partition member 650.

[0449] Therefore, the device according to another embodiment of the present disclosure can output the left sound PVS1 and the right sound PVS2 to the forward area in front of the display panel 100 through the first vibration device 210-1 and the second vibration device 210-2 to provide sound to the user. The device according to another embodiment of the present disclosure can output a sound of a stereo type to the forward area in front of the display panel 100 by separating the left sound PVS1 and the right sound PVS2 according to the separator 600. In addition, in the device according to another embodiment of the present disclosure, due to the reduction of the resonance frequency caused by the plates implemented in each of the first vibration device 210-1 and the second vibration device 210-2, the flatness of the sound pressure level characteristics can be improved.

[0450] Fig.17 The device according to another embodiment of the present disclosure is shown. Fig.18 is a cross-sectional view taken along Fig.17 the line V-V' shown in Fig.17 The embodiment implemented by modifying the spacer member in the device shown in Fig.16 is shown. Therefore, in the following description, the repeated description of the elements other than the spacer member and the elements related thereto will be omitted or given briefly.

[0451] Referring to Fig.17 and Fig.18 , the vibration device according to another embodiment of the present disclosure may include a first vibration device 210-1 and a second vibration device 210-2. When the first vibration device 210-1 and the second vibration device 210-2 include a plurality of vibration structures, the sound pressure level may decrease at a specific frequency. For example, the sound pressure level may decrease in the middle tone vocal cords. Resonance or anti-resonance may occur at the boundary between the plurality of vibration structures, and thus, the sound pressure level may decrease. For example, resonance or anti-resonance may occur in the central portion between the plurality of vibration structures, and thus, the sound pressure level may decrease. Therefore, in order to reduce the decrease in the sound pressure level caused by resonance or anti-resonance, the interval between the plurality of vibration structures can be reduced. However, due to the difficulty in the process of placing the plurality of vibration structures, it may be difficult to reduce the interval between the plurality of vibration structures. To reduce the decrease in the sound pressure level, a spacer member may be provided at the boundary between the plurality of vibration structures.

[0452] The vibration device 200 according to another embodiment of the present disclosure may include a spacer member provided at the boundary between the plurality of vibration structures so as to improve the deterioration or inclination phenomenon of the sound quality occurring in the boundary region between the plurality of vibration structures. For example, the spacer member can prevent or reduce the resonance frequency in the boundary portion between the plurality of vibration structures. The spacer member can be configured to reduce the decrease in the sound pressure level occurring at the boundary between the plurality of vibration structures.

[0453] Referring to Fig.17 and Fig.18 The first cushion member 701 can be disposed between a plurality of vibration structures in the first vibration device 210-1. For example, the region between the plurality of vibration structures in the first vibration device 210-1 can overlap with the first cushion member 701. The second cushion member 702 can be disposed between a plurality of vibration structures in the second vibration device 210-2. For example, the region between the plurality of vibration structures in the second vibration device 210-2 can overlap with the second cushion member 702. The first cushion member 701 and the second cushion member 702 can be resonance control cushions, external resonance cushions, clearance cushions, or resonance controllers, but the embodiments of the present disclosure are not limited thereto.

[0454] The first cushion member 701 can be disposed between the first vibration device 210-1 and the support member 300. For example, the first cushion member 701 can have a "+" shape that overlaps with the region between the plurality of vibration structures of the first vibration device 210-1. The second cushion member 702 can be disposed between the second vibration device 210-2 and the support member 300. For example, the second cushion member 702 can have a "+" shape that overlaps with the region between the plurality of vibration structures of the second vibration device 210-2.

[0455] Referring to Fig.18 the first cushion member 701 can be disposed between the third vibration structure 210C and the fourth vibration structure 210D of the first vibration device 210-1. For example, the first cushion member 701 can be disposed between the first vibration device 210-1 and the support member 300. For example, the first cushion member 701 can be disposed between the rear surface of the first vibration device 210-1 and the upper surface of the support member 300. The size of each of the first cushion member 701 and the second cushion member 702 can be configured to be equal to or different from the region between the plurality of vibration structures. For example, with respect to the first direction (X direction), the width of each of the first cushion member 701 and the second cushion member 702 can be the same as or different from the width of each of the third vibration structure 210C and the fourth vibration structure 210D.

[0456] For example, each vibration structure of the plurality of vibration structures can include a vibration part 211, a first electrode layer E1 disposed at a first surface of the vibration part 211, and a second electrode layer E2 disposed at a second surface different from the first surface of the vibration part 211. Each vibration structure of the plurality of vibration structures can further include a first protection member 213 on the first surface of the first electrode layer E1 and a second protection member 215 on a second surface different from the first surface of the first electrode layer E1.

[0457] For example, each of the plurality of vibration structures may include a vibration part 211, a first protection member 213 on a first surface of the vibration part 211, and a second protection member 215 on a second surface different from the first surface of the vibration part 211. Each of the plurality of vibration structures may further include a first electrode layer E1 between the vibration part 211 and the first protection member 213, and a second electrode layer E2 between the vibration part 211 and the second protection member 215. For example, the first protection member 213 and the second protection member 215 of the vibration device may commonly cover the plurality of vibration structures. For example, the first protection member 213 and the second protection member 215 of the vibration device may be arranged to surround the plurality of vibration structures.

[0458] In each of the third vibration structure 210C and the fourth vibration structure 210D of the first vibration device 210-1, the first electrode layer E1 may be arranged closer to the display panel 100 than the second electrode layer E2. For example, the first electrode layer E1 may be a negative (-) electrode, and the second electrode layer E2 may be a positive (+) electrode. However, embodiments of the present disclosure are not limited thereto, and the first electrode layer E1 may be a positive (+) electrode, and the second electrode layer E2 may be a negative (-) electrode.

[0459] The first cushioning member 701 and the second cushioning member 702 may be configured as materials for absorbing or adjusting vibrations. For example, the first cushioning member 701 and the second cushioning member 702 may be configured as materials different from the separator 600, but embodiments of the present disclosure are not limited thereto. For example, the first cushioning member 701 and the second cushioning member 702 may be configured as one of a silicone-based polymer, paraffin, and an acrylic polymer, but embodiments of the present disclosure are not limited thereto. For example, each of the first cushioning member 701 and the second cushioning member 702 may include a polyurethane-based material that is relatively ductile compared to acrylics among acrylics and polyurethanes, thereby minimizing the vibration transmission of the vibration device 200 to the support member 300.

[0460] The first cushioning member 701 may reduce heat generated by the vibration of the first vibration device 210-1. The second cushioning member 702 may reduce heat generated by the vibration of the second vibration device 210-2. Therefore, since the cushioning members are provided between the plurality of vibration structures, a reduction in the sound pressure level occurring between the plurality of vibration structures at a specific frequency can be reduced, and the heat dissipation effect of reducing heat generated by the vibration of the plurality of vibration structures can be enhanced. As another embodiment of the present disclosure, a heat dissipation member may also be provided between the display panel 100 and the vibration device 200. For example, the heat dissipation member may be provided at the rear surface of the display panel 100.

[0461] Fig.19 is along Fig.17 Another cross-sectional view taken along the line V-V' shown in

[0462] Referring to Fig.17 and Fig.19 , the first cushion member 801 can be disposed between a plurality of vibration structures of the first vibration device 210-1. For example, the region between the plurality of vibration structures in the first vibration device 210-1 can overlap with the first cushion member 801. The second cushion member can be disposed between a plurality of vibration structures of the second vibration device 210-2. For example, the region between the plurality of vibration structures in the second vibration device 210-2 can overlap with the second cushion member. The first cushion member 801 and the second cushion member 702 can be resonance control elements, external resonance elements, resonance control cushions, external resonance cushions, gap cushions, or resonance controllers, but the embodiments of the present disclosure are not limited thereto.

[0463] Referring to Fig.19 , the first cushion member 801 can be disposed between the third vibration structure 210C and the fourth vibration structure 210D of the first vibration device 210-1. For example, the first cushion member 801 can be disposed between the vibration generator 210 and the support member 300. For example, the first cushion member 801 can be disposed between the rear surface of the first vibration device 210-1 and the upper surface of the support member 300.

[0464] The size of each of the first cushion member 801 and the second cushion member can be configured to be equal to or different from the region between the plurality of vibration structures. For example, with respect to the first direction (or X direction), the width of each of the first cushion member 801 and the second cushion member can be the same as or different from the width of each of the third vibration structure 210C and the fourth vibration structure 210D.

[0465] For example, each of the plurality of vibration structures can include a vibration portion 211, a first electrode layer E1 disposed at a first surface of the vibration portion 211, and a second electrode layer E2 disposed at a second surface different from the first surface of the vibration portion 211. For example, similar to the vibration portion 211 described above with reference to Figure 3 or the vibration layer 221a described above with reference to FIG. 5A to FIG. 5F , the vibration portion 211 can include a first portion 211a and a second portion 211b. For example, as FIG. 5A to FIG. 5F or Fig.10As shown, the second part 211b or 221a2 can be set to be more outward than the first part 211a or 221a1, but embodiments of the present disclosure are not limited thereto. Each of the plurality of vibration structures may further include a first protection member 213 on the first surface of the first electrode layer E1 and a second protection member 215 on a second surface different from the first surface of the first electrode layer E1.

[0466] For example, each of the plurality of vibration structures may include a vibration part 211, a first protection member 213 on the first surface of the vibration part 211, and a second protection member 215 on a second surface different from the first surface of the vibration part 211. Each of the plurality of vibration structures may further include a first electrode layer E1 between the vibration part 211 and the first protection member 213 and a second electrode layer E2 between the vibration part 211 and the second protection member 215. For example, the first protection member 213 and the second protection member 215 of the vibration device may commonly cover the plurality of vibration structures. For example, the first protection member 213 and the second protection member 215 of the vibration device may be arranged to surround the plurality of vibration structures.

[0467] One or more of the first cushion member 801 and the second cushion member may be configured to be equal to the first vibration device 210-1. For example, when one or more of the first cushion member 801 and the second cushion member are configured to be equal to the first vibration device 210-1, the level of the signal applied to the first cushion member 801 and the second cushion member can be adjusted, and thus, the resonance of the vibration device can be easily adjusted.

[0468] For example, the first cushion member 801 may include a vibration layer 311, a first electrode layer E31, and a second electrode layer E32. For example, the first cushion member 801 may include a vibration layer 311, a first electrode layer E31 provided at the first surface of the vibration layer 311, and a second electrode layer E32 provided at a second surface different from the first surface of the vibration layer 311. For example, similar to the vibration part 211 described above with reference to Figure 3 or the vibration part 211 described above with reference to FIG. 5A to FIG. 5F the vibration layer 311 may include a first part 211a and a second part 211b. A first protection member 313 may be provided below the first electrode layer E31. For example, the first protection member 313 may protect the first electrode layer E31. A second protection member 315 may be provided on the second electrode layer E32. For example, the second protection member 315 may protect the second electrode layer E32. The first protection member 313 and the second protection member 315 may be the same as those described above with reference to Figure 3 , Figure 4 and Figures 7 to 9The described first protection member 213 or 1213 and the second protection member 215 or 1215 are substantially the same, and thus their descriptions are omitted.

[0469] For example, the first electrode layer E1 of each of the third vibration structure 210C and the fourth vibration structure 210D of the first vibration device 210-1 may be arranged closer to the display panel 100 than the second electrode layer E2. For example, the first electrode layer E1 may be a negative (-) electrode, and the second electrode layer E2 may be a positive (+) electrode. However, embodiments of the present disclosure are not limited thereto, and the first electrode layer E1 may be a positive (+) electrode, and the second electrode layer E2 may be a negative (-) electrode. The second electrode layer E32 of the first spacer member 801 may be arranged closer to the display panel 100 than the first electrode layer E31. For example, the first electrode layer E31 may be a negative (-) electrode, and the second electrode layer E32 may be a positive (+) electrode. However, embodiments of the present disclosure are not limited thereto, and the first electrode layer E31 may be a positive (+) electrode, and the second electrode layer E32 may be a negative (-) electrode. The polarities of the first electrode layer E1 and the second electrode layer E2 of the first vibration device 210-1 may be configured to be opposite to the polarities of the first electrode layer E31 and the second electrode layer E32 of the first spacer member 801. For example, with respect to the display panel 100, the polarity of the first electrode layer E1 of each vibration structure among the plurality of vibration structures may be different from the second electrode layer E32 of the spacer member. For example, with respect to the display panel 100, the first electrode layer E1 and the second electrode layer E2 of the first vibration device 210-1 may be configured as a negative (-) electrode and a positive (+) electrode, and the second electrode layer E32 and the first electrode layer E31 of the first spacer member 801 may be configured as a positive (+) electrode and a negative (-) electrode. As another embodiment of the present disclosure, with respect to the display panel 100, the first electrode layer E1 and the second electrode layer E2 of the first vibration device 210-1 may be configured as a positive (+) electrode and a negative (-) electrode, and the second electrode layer E32 and the first electrode layer E31 of the first spacer member 801 may be configured as a negative (-) electrode and a positive (+) electrode. Therefore, since the electrode layers of the first spacer member 801 are arranged to have electrode layers with polarities opposite to those of the first vibration device 210-1, the tilt phenomenon caused by resonance between the plurality of vibration structures can be canceled based on the anti-resonance caused by the first spacer member 801. Therefore, since the spacer member is arranged between the plurality of vibration structures, the reduction in the sound pressure level that appears at the boundary between the plurality of vibration structures can be reduced.

[0470] Fig. 20 is along Fig.17 Another cross-sectional view taken along the line V-V' shown in

[0471] Referring to Fig.17 and Fig. 20, the first cushion member 901 can be disposed between a plurality of vibration structures of the first vibration device 210-1. For example, the area between the plurality of vibration structures can overlap with the first cushion member 901. For example, the first cushion member 901 can be embedded between the plurality of vibration structures in the first vibration device 210-1. The second cushion member can be disposed between a plurality of vibration structures of the second vibration device 210-2. For example, the area between the plurality of vibration structures can overlap with the second cushion member 902. For example, the second cushion member can be embedded between the plurality of vibration structures in the second vibration device 210-2. The first cushion member 901 and the second cushion member can be resonance control elements, internal resonance elements, resonance control cushions, internal resonance cushions, gap cushions, or resonance controllers, but the embodiments of the present disclosure are not limited thereto.

[0472] Referring to Fig. 20 , the first cushion member 901 can be disposed between the third vibration structure 210C and the fourth vibration structure 210D of the first vibration device 210-1. For example, the area between the plurality of vibration structures can overlap with the first cushion member 901. For example, the first cushion member 901 can be embedded between the third vibration structure 210C and the fourth vibration structure 210D of the first vibration device 210-1. The size of each of the first cushion member 901 and the second cushion member can be configured to be equal to or not equal to the area between the plurality of vibration structures. For example, with respect to the first direction (or X direction), the width of each of the first cushion member 901 and the second cushion member can be the same as or different from the width of each of the third vibration structure 210C and the fourth vibration structure 210D.

[0473] The first cushion member 901 and the second cushion member can be configured to be equal to the first vibration device 210-1. For example, in the case where the first cushion member 901 and the second cushion member are configured to be equal to the first vibration device 210-1, the level of the signal applied to the first cushion member 901 and the second cushion member can be adjusted, and thus, the resonance of the vibration device can be easily adjusted. For example, since the first cushion member 901 and the second cushion member are disposed between the plurality of vibration structures, an increase in the thickness of the device caused by the arrangement of the cushion members can be reduced, and an attachment process performed on the cushion members can be omitted.

[0474] For example, each of the plurality of vibration structures can include a vibration portion 211, a first electrode layer E1 disposed at a first surface of the vibration portion 211, and a second electrode layer E2 disposed at a second surface different from the first surface of the vibration portion 211. For example, similar to the vibration portion 211 described above with reference to Figure 3 or the vibration portion 211 described above with reference to FIG. 5A to FIG. 5FThe described vibrating part 211, the vibrating part 211 may include a first part 211a and a second part 211b. For example, as FIG. 5A to FIG. 5F or Fig.10 shown, the second part 211b or 221a2 may be set to be more outward than the first part 211a or 221a1, but the embodiments of the present disclosure are not limited thereto. Each of the plurality of vibrating structures may further include a first protective member 213 on the first surface of the first electrode layer E1 and a second protective member 215 on a second surface different from the first surface of the first electrode layer E1.

[0475] For example, each of the plurality of vibrating structures may include a vibrating part 211, a first protective member 213 on the first surface of the vibrating part 211, and a second protective member 215 on a second surface different from the first surface of the vibrating part 211. Each of the plurality of vibrating structures may further include a first electrode layer E1 between the vibrating part 211 and the first protective member 213 and a second electrode layer E2 between the vibrating part 211 and the second protective member 215.

[0476] For example, the first spacer member 901 may include a vibrating layer 511, a first electrode layer E51, and a second electrode layer E52. For example, the first spacer member 901 may include a vibrating layer 511, a first electrode layer E51 provided at the first surface of the vibrating layer 511, and a second electrode layer E52 provided at a second surface different from the first surface of the vibrating layer 511. For example, similar to the vibrating part 211 described above with reference to Figure 3 or the vibrating part 211 described above with reference to FIG. 5A to FIG. 5F the vibrating part 211, the vibrating layer 511 may include a first part 211a and a second part 211b. The vibrating layer 511 of the first spacer member 901 may be arranged to be the same as the vibrating part 211 of each of the plurality of vibrating structures. For example, the arrangement of the first part and the second part of the vibrating layer 511 of the first spacer member 901 may be the same as the arrangement of the first part and the second part of the vibrating part 211 of each of the plurality of vibrating structures. However, the present disclosure is not limited thereto, and the arrangement of the first part and the second part of the vibrating layer 511 of the first spacer member 901 may be configured to be different from the arrangement of the first part and the second part of the vibrating part 211 of each of the plurality of vibrating structures.

[0477] The first protection member 213 of the first vibration device 210-1 may protect the second electrode layer E52 of the first spacer member 901. For example, the first protection member 213 of the first vibration device 210-1 may protect the second electrode layer E52 of the first spacer member 901, and thus, a separate first protection member for protecting the second electrode layer E52 of the first spacer member 901 may not be provided. The second protection member 215 of the first vibration device 210-1 may protect the first electrode layer E51 of the first spacer member 901. For example, the second protection member 215 of the first vibration device 210-1 may protect the first electrode layer E51 of the first spacer member 901, and thus, a separate second protection member for protecting the first electrode layer E51 of the first spacer member 901 may not be provided. For example, the first protection member 213 and the second protection member 215 of the vibration device may commonly cover a plurality of vibration structures. For example, the first protection member 213 and the second protection member 215 of the vibration device may be provided to surround the plurality of vibration structures. For example, the first protection member 213 and the second protection member 215 of the vibration device may be shared by the spacer member.

[0478] For example, the first electrode layer E1 of each of the third vibration structure 210C and the fourth vibration structure 210D of the first vibration device 210-1 may be arranged closer to the display panel 100 than the second electrode layer E2. For example, the first electrode layer E1 may be a negative (-) electrode and the second electrode layer E2 may be a positive (+) electrode. However, embodiments of the present disclosure are not limited thereto, and the first electrode layer E1 may be a positive (+) electrode and the second electrode layer E2 may be a negative (-) electrode. The second electrode layer E52 of the first spacer member 901 may be arranged closer to the display panel 100 than the first electrode layer E51. For example, the first electrode layer E51 may be a negative (-) electrode and the second electrode layer E52 may be a positive (+) electrode. However, embodiments of the present disclosure are not limited thereto, and the first electrode layer E51 may be a positive (+) electrode and the second electrode layer E52 may be a negative (-) electrode. The polarities of the first electrode layer E1 and the second electrode layer E2 of the first vibration device 210-1 may be configured to be opposite to the polarities of the first electrode layer E51 and the second electrode layer E52 of the first spacer member 901. For example, for the display panel 100, the polarity of the first electrode layer E1 of each vibration structure among the plurality of vibration structures may be different from the second electrode layer E52 of the spacer member. For example, for the display panel 100, the first electrode layer E1 and the second electrode layer E2 of the first vibration device 210-1 may be configured as a negative (-) electrode and a positive (+) electrode, and the second electrode layer E52 and the first electrode layer E51 of the first spacer member 901 may be configured as a positive (+) electrode and a negative (-) electrode. Therefore, since the electrode layers of the first spacer member 901 are arranged to have electrode layers with polarities opposite to those of the first vibration device 210-1, the tilting phenomenon caused by resonance between the plurality of vibration structures can be canceled based on the anti-resonance caused by the first spacer member 901. Therefore, since the spacer member is arranged between the plurality of vibration structures, the reduction in the sound pressure level that occurs at the boundary between the plurality of vibration structures can be reduced. In addition, since the spacer member is embedded between the plurality of vibration structures, the thickness of the device can be reduced and the process can be simplified.

[0479] As another embodiment of the present disclosure, Figures 18 to 20 the spacer members in may be configured in common. For example, Fig.18 the first spacer member 701 and the second spacer member in may be arranged together with Fig. 20 the first spacer member 901 and the second spacer member in in the vibration devices 210-1 and 210-2. For example, Fig.19 the first spacer member 801 and the second spacer member in may be arranged together with Fig. 20 the first spacer member 901 and the second spacer member in in the vibration devices 210-1 and 210-2.

[0480] Fig.21is taken along Fig.17 another cross-sectional view taken along line V-V' shown in

[0481] Referring to Figure 21 to Figure 23 , a spacer member may be provided in each of the plurality of vibration generators 210 and 230 of the vibration device 200 of Figures 7 to 10 . Accordingly, the description of the vibration device is omitted or briefly given below.

[0482] Referring to Fig.17 and Fig.21 , a vibration device 200 according to another embodiment of the present disclosure may include a plurality of vibration generators 210 and 230. The plurality of vibration generators 210 and 230 may include a plurality of vibration structures.

[0483] For example, each of the plurality of vibration structures may include a vibration layer 221a, a first electrode layer 221b provided on a first surface of the vibration layer 221a, and a second electrode layer 221c provided on a second surface different from the first surface of the vibration layer 221a. Each of the plurality of vibration structures may further include a first protection member 1213 on a first surface of the first electrode layer 221b and a second protection member 1215 on a second surface different from the first surface of the first electrode layer 221b.

[0484] For example, each of the plurality of vibration structures may include a vibration layer 221a, a first protection member 1213 on a first surface of the vibration layer 221a, and a second protection member 1215 on a second surface different from the first surface of the vibration layer 221a. Each of the plurality of vibration structures may further include a first electrode layer 221b between the vibration layer 221a and the first protection member 1213 and a second electrode layer 221c between the vibration layer 221a and the second protection member 1215. For example, the first protection member 1213 and the second protection member 1215 of the vibration device may commonly cover the plurality of vibration structures. For example, the first protection member 1213 and the second protection member 1215 of the vibration device may be provided to surround the plurality of vibration structures.

[0485] The first cushion member 701 can be disposed at multiple vibration generators 210 and 230 of the vibration device 200. For example, the first cushion member 701 can be disposed at the rear surface of each of the multiple vibration generators 210 and 230 of the vibration device 200. For example, the first cushion member 701 can be disposed below the second vibration generator 230 among the multiple vibration generators 210 and 230. For example, the first cushion member 701 can be disposed between the vibration device 200 and the support member. For example, the first cushion member 701 can be disposed between the multiple vibration generators 210 and 230 and the support member. For example, the first cushion member 701 can be disposed between the rear surface of each of the multiple vibration generators 210 and 230 and the upper surface of the support member. For example, the first cushion member 701 can be disposed between the rear surface of the second vibration generator 230 among the multiple vibration generators 210 and 230 and the upper surface of the support member. For example, the end of the first cushion member 701 can be set to correspond to the first portion 221a1. The end of the first cushion member 701 may not overlap with the second portion 221a2 and may overlap with the first portion 221a1. For example, the end of the first cushion member 701 can be set or aligned at the boundary between the first portion 221a1 and the second portion 221a2. For example, the first cushion member 701 can be configured to correspond to both sides of the multiple first portions 221a1 of the first vibration generator 210 and / or the second vibration generator 230.

[0486] The second cushion member 702 can be disposed at a plurality of vibration generators 210 and 230 of the vibration device 200. For example, the second cushion member 702 can be disposed below the second vibration generator 230 among the plurality of vibration generators 210 and 230. For example, the second cushion member 702 can be disposed between the vibration device 200 and the support member. For example, the second cushion member 702 can be disposed between the plurality of vibration generators 210 and 230 and the support member. For example, the second cushion member 702 can be disposed between the rear surface of each of the plurality of vibration generators 210 and 230 and the upper surface of the support member. For example, the second cushion member 702 can be disposed between the rear surface of the second vibration generator 230 among the plurality of vibration generators 210 and 230 and the upper surface of the support member. For example, the end of the second cushion member 702 can be set to correspond to the first portion 221a1. The end of the second cushion member 702 may not overlap with the second portion 221a2 and may overlap with the first portion 221a1. For example, the end of the second cushion member 702 can be set or aligned at the boundary between the first portion 221a1 and the second portion 221a2. For example, the end of the second cushion member 702 can be configured to correspond to both sides of the plurality of first portions 221a1 of the first vibration generator 210 and / or the second vibration generator 230. The first cushion member 701 and the second cushion member 702 can be resonance control cushions, external resonance cushions, clearance cushions or resonance controllers, but the embodiments of the present disclosure are not limited thereto. For example, the cushion member includes a plurality of cushion members 701 and 702, and each vibration structure 210A to 210D has corresponding cushion members 701 and 702. For example, the cushion members 701 and 702 are disposed parallel to the vibration structures 210A to 210D of the vibration generators 210 and 230. For example, the vibration structures 210A to 210D and the cushion members 701 and 702 are arranged in a stacked arrangement.

[0487] The size of each of the first cushion member 701 and the second cushion member 702 can be configured to be the same as or different from each of the plurality of vibration structures of the plurality of vibration generators 210 and 230.

[0488] The first electrode layer 221b of each of the third vibration structure 210C and the fourth vibration structure 210D in the first vibration generator 210 may be disposed closer to the display panel 100 than the second electrode layer 221c. For example, the first electrode layer 221b may be a negative (-) electrode. For example, the second electrode layer 221c may be a positive (+) electrode. The first electrode layer 221b of each of the third vibration structure 210C and the fourth vibration structure 210D in the second vibration generator 230 may be disposed closer to the display panel 100 than the second electrode layer 221c. For example, the first electrode layer 221b may be a negative (-) electrode. For example, the second electrode layer 221c may be a positive (+) electrode. One or more of the first electrode layer 221b of each of the third vibration structure 210C and the fourth vibration structure 210D in the first vibration generator 210 and the first electrode layer 221b of each of the third vibration structure 210C and the fourth vibration structure 210D in the second vibration generator 230 may be disposed closer to the display panel 100 than the second electrode layer 221c.

[0489] For example, the first spacer member 701 and the second spacer member 702 may be configured of a material different from that of the separator 600, but embodiments of the present disclosure are not limited thereto. For example, the first spacer member 701 and the second spacer member 702 may be configured of one of a silicone-based polymer, paraffin, and an acrylic polymer, but embodiments of the present disclosure are not limited thereto.

[0490] The first spacer member 701 may reduce heat generated by the vibration of the third vibration structure 210C of the first vibration generator 210 and the third vibration structure 210C of the second vibration generator 230. The second spacer member 702 may reduce heat generated by the vibration of the fourth vibration structure 210D of the first vibration generator 210 and the fourth vibration structure 210D of the second vibration generator 230. Accordingly, since the spacer members are disposed in the vibration device, a decrease in the sound pressure level occurring between the plurality of vibration structures at a specific frequency may be reduced, and a heat dissipation effect of reducing heat generated by the vibration of the plurality of vibration structures may be enhanced. As another embodiment of the present disclosure, a heat dissipation member may also be disposed between the display panel 100 and the vibration device. For example, the heat dissipation member may be disposed at the rear surface of the display panel 100.

[0491] Fig. 22 is along Fig.17 Another cross-sectional view taken along line V-V' shown in.

[0492] Referring to Fig.17 and Fig. 22 , the vibration device 200 according to an embodiment of the present disclosure may include a plurality of vibration generators 210 and 230. The plurality of vibration generators 210 and 230 may include a plurality of vibration structures.

[0493] For example, each of the plurality of vibration structures may include a vibration layer 221a, a first electrode layer 221b disposed at a first surface of the vibration layer 221a, and a second electrode layer 221c disposed at a second surface different from the first surface of the vibration layer 221a. Each of the plurality of vibration structures may further include a first protection member 1213 on a first surface of the first electrode layer 221b and a second protection member 1215 on a second surface different from the first surface of the first electrode layer 221b.

[0494] For example, each of the plurality of vibration structures may include a vibration layer 221a, a first protection member 1213 on a first surface of the vibration layer 221a, and a second protection member 1215 on a second surface different from the first surface of the vibration layer 221a. Each of the plurality of vibration structures may further include a first electrode layer 221b between the vibration layer 221a and the first protection member 1213 and a second electrode layer 221c between the vibration layer 221a and the second protection member 1215. For example, the first protection member 1213 and the second protection member 1215 of the vibration device may commonly cover the plurality of vibration structures. For example, the first protection member 1213 and the second protection member 1215 of the vibration device may be arranged to surround the plurality of vibration structures.

[0495] The first cushion member 801 and the second cushion member 802 may include a vibration layer 311, a first electrode layer E31, and a second electrode layer E32. For example, the first cushion member 801 and the second cushion member 802 may include a vibration layer 311, a first electrode layer E31 disposed at a first surface of the vibration layer 311, and a second electrode layer E32 disposed at a second surface different from the first surface of the vibration layer 311. For example, similar to the vibration part 211 described above with reference to Figure 3 or the above reference to FIG. 5A to FIG. 5FFor the vibrating part 211 described, the vibrating layer 311 of each of the first cushion member 801 and the second cushion member 802 may include a first part 211a and a second part 211b. For example, the vibrating layer 311 of each of the first cushion member 801 and the second cushion member 802 may be arranged to be the same as the vibrating layer 221a of each of the plurality of vibrating structures. For example, the arrangement of the first part and the second part of the vibrating layer 311 of each of the first cushion member 801 and the second cushion member 802 may be the same as the arrangement of the first part and the second part of the vibrating layer 221a of each of the plurality of vibrating structures. However, the embodiments of the present disclosure are not limited thereto, and the arrangement of the first part and the second part of the vibrating layer 311 of each of the first cushion member 801 and the second cushion member 802 may be configured to be different from the arrangement of the first part and the second part of the vibrating layer 221a of each of the plurality of vibrating structures.

[0496] The first protective member 313 may be provided below the first electrode layer E31. For example, the first protective member 313 may protect the first electrode layer E31. The second protective member 315 may be provided below the second electrode layer E32. For example, the second protective member 315 may protect the second electrode layer E32. The first protective member 313 and the second protective member 315 may be substantially the same as the first protective member 213 or 1213 and the second protective member 215 or 1215 described above with reference to Figure 3 , Figure 4 and Figures 7 to 9 and thus the description thereof is omitted.

[0497] The first cushion member 801 may be disposed at a plurality of vibration generators 210 and 230 of the vibration device 200. For example, the first cushion member 801 may be disposed below the second vibration generator 230 among the plurality of vibration generators 210 and 230. For example, the first cushion member 801 may be disposed between the vibration device 200 and the support member. For example, the first cushion member 801 may be disposed between the plurality of vibration generators 210 and 230 and the support member. For example, the first cushion member 801 may be disposed between the rear surface of each of the plurality of vibration generators 210 and 230 and the upper surface of the support member. For example, the first cushion member 801 may be disposed between the rear surface of the second vibration generator 230 among the plurality of vibration generators 210 and 230 and the upper surface of the support member. For example, the end of the first cushion member 801 may be disposed to correspond to the first portion 221a1. The end of the first cushion member 801 may not overlap with the second portion 221a2 and may overlap with the first portion 221a1. For example, the end of the first cushion member 801 may be disposed or aligned at the boundary between the first portion 221a1 and the second portion 221a2. For example, the first cushion member 801 may be configured to correspond to both sides of the plurality of first portions 221a1 of the first vibration generator 210 and / or the second vibration generator 230.

[0498] The second cushion member 802 can be disposed at a plurality of vibration generators 210 and 230 of the vibration device 200. For example, the second cushion member 802 can be disposed below the second vibration generator 230 among the plurality of vibration generators 210 and 230. For example, the second cushion member 802 can be disposed between the vibration device 200 and the support member. For example, the second cushion member 802 can be disposed between the rear surface of each of the plurality of vibration generators 210 and 230 and the upper surface of the support member. For example, the second cushion member 802 can be disposed between the rear surface of the second vibration generator 230 among the plurality of vibration generators 210 and 230 and the upper surface of the support member. For example, the end of the second cushion member 802 can be disposed to correspond to the first portion 221a1. The end of the second cushion member 802 may not overlap with the second portion 221a2 and may overlap with the first portion 221a1. For example, the end of the second cushion member 802 can be disposed or aligned at the boundary between the first portion 221a1 and the second portion 221a2. For example, the second cushion member 802 can be configured to correspond to both sides of the plurality of first portions 221a1 of the first vibration generator 210 and / or the second vibration generator 230. The first cushion member 801 and the second cushion member 802 can be a resonance control cushion, an external resonance cushion, a clearance cushion, or a resonance controller, but embodiments of the present disclosure are not limited thereto. For example, the cushion member includes a plurality of cushion members 801 and 802, and each of the vibration structures 210A to 210D has a corresponding cushion member 801 and 802. For example, the cushion members 801 and 802 are disposed parallel to the vibration structures 210A to 210D of the vibration generators 210 and 230. For example, the vibration structures 210A to 210D and the cushion members 801 and 802 are arranged in a stacked arrangement.

[0499] The size of each of the first cushion member 801 and the second cushion member 802 can be configured to be equal to or not equal to each of the plurality of vibration structures.

[0500] One or more of the first cushion member 801 and the second cushion member 802 can be configured to be the same as the vibration generators 210 and 230. For example, one or more of the first cushion member 801 and the second cushion member 802 can be configured to be the same as the plurality of vibration structures 210A to 210D of the plurality of vibration generators 210 and 230. For example, in the case where one or more of the first cushion member 801 and the second cushion member are configured to be equal to the vibration generators 210 and 230, the level of the signal applied to the first cushion member 801 and the second cushion member 802 can be adjusted, and thus, the resonance of the vibration device can be easily adjusted.

[0501] For example, the first cushion member 801 may include a vibration layer 311, a first electrode layer E31, and a second electrode layer E32. For example, similar to the vibration part 211 described above with reference to Figure 3 or the vibration part 211 described above with reference to FIG. 5A to FIG. 5F , the vibration layer 311 may include a first part 211a and a second part 211b. As another embodiment of the present disclosure, similar to the vibration layer 221a described above with reference to Figures 7 to 10 , the vibration layer 311 may include a first part 211a1 and a second part 211a2.

[0502] A first protection member 313 may be disposed below the first electrode layer E31. For example, the first protection member 313 may protect the first electrode layer E31. A second protection member 315 may be disposed on the second electrode layer E32. For example, the second protection member 315 may protect the second electrode layer E32. The first protection member 313 and the second protection member 315 may be substantially the same as the first protection member 213 or 1213 and the second protection member 215 or 1215 described above with reference to Figure 3 , Figure 4 and Figures 7 to 9 , and thus their descriptions are omitted.

[0503] The first electrode layer 221b of each of the third vibration structure 210C and the fourth vibration structure 210D in the first vibration generator 210 may be disposed closer to the display panel 100 than the second electrode layer 221c. For example, the first electrode layer 221b may be a negative (-) electrode. For example, the second electrode layer 221c may be a positive (+) electrode. The first electrode layer 221b of each of the third vibration structure 210C and the fourth vibration structure 210D in the second vibration generator 230 may be disposed closer to the display panel 100 than the second electrode layer 221c. For example, the first electrode layer 221b may be a negative (-) electrode. For example, the second electrode layer 221c may be a positive (+) electrode. The first electrode layer 221b of each of the third vibration structure 210C and the fourth vibration structure 210D in the first vibration generator 210 and the first electrode layer 221b of each of the third vibration structure 210C and the fourth vibration structure 210D in the second vibration generator 230 may be disposed closer to the display panel 100 than the second electrode layer 221c.

[0504] The second electrode layer E32 of the first spacer member 801 may be arranged closer to the display panel 100 than the first electrode layer E31. For example, the first electrode layer E31 may be a negative (-) electrode. For example, the second electrode layer E32 may be a positive (+) electrode. The polarities of the first electrode layer E31 and the second electrode layer E32 of the first vibration generator 210 may be configured to be opposite to the polarities of the first electrode layer E31 and the second electrode layer E32 of the first spacer member 801. For example, for the display panel 100, the polarity of the first electrode layer E1 of each of the plurality of vibration structures may be different from the second electrode layer E32 of the spacer member. For example, for the display panel 100, the first electrode layer 221b and the second electrode layer 221c of the first vibration generator 210 may be configured as a negative (-) electrode and a positive (+) electrode, and the second electrode layer E32 and the first electrode layer E31 of the first spacer member 801 may be configured as a positive (+) electrode and a negative (-) electrode. The second electrode layer E32 of the second spacer member 802 may be arranged closer to the display panel 100 than the first electrode layer E31. For example, the first electrode layer E31 may be a negative (-) electrode. For example, the second electrode layer E32 may be a positive (+) electrode. The polarities of the first electrode layer 221b and the second electrode layer 221c of the second vibration generator 230 may be configured to be opposite to the polarities of the first electrode layer E31 and the second electrode layer E32 of the second spacer member 802. For example, for the display panel 100, the first electrode layer 221b and the second electrode layer 221c of the second vibration generator 230 may be configured as a negative (-) electrode and a positive (+) electrode, and the second electrode layer E32 and the first electrode layer E31 of the second spacer member 802 may be configured as a positive (+) electrode and a negative (-) electrode. Therefore, since the electrode layers of the first spacer member 801 and / or the second spacer member 802 are arranged as electrode layers having polarities opposite to the polarities of the first vibration generator 210 and / or the second vibration generator 230, the tilting phenomenon caused by the resonance between the plurality of vibration structures can be canceled based on the anti-resonance caused by the electrode layers of the first spacer member 801 and / or the second spacer member 802. Therefore, since the spacer member is provided in the vibration device, the reduction in the sound pressure level occurring at the boundary between the plurality of vibration structures can be reduced.

[0505] Fig.23 is another cross-sectional view taken along Fig.17 the line V-V' shown in

[0506] Referring to Fig.17 and Fig.23 According to an embodiment of the present disclosure, the vibration device 200 may include a plurality of vibration generators 210 and 230. The plurality of vibration generators 210 and 230 may include a plurality of vibration structures.

[0507] For example, each of the plurality of vibration structures may include a v...

Claims

1. A vibration generating device, the vibration generating device comprising: A display panel configured to display an image; A vibration device disposed on a rear surface of the display panel to vibrate the display panel, the vibration device including a plurality of vibration structures, and at least one of the plurality of vibration structures including a plurality of layers stacked on top of each other; And A spacer member disposed outside or inside the vibration device, the spacer member having a different shape from the plurality of vibration structures in a plan view and including a plurality of layers stacked on top of each other, Wherein each of the plurality of layers of the spacer member includes the same material as a corresponding layer included in the plurality of layers of at least one of the plurality of vibration structures.

2. The vibration generating device according to claim 1, wherein, The spacer member is disposed between the plurality of vibration structures.

3. The vibration generating device according to claim 2, wherein, The spacer member includes a plurality of spacer members, each of the plurality of spacer members being configured to correspond to each of the plurality of vibration structures.

4. The vibration generating device according to claim 1, the vibration generating device further comprising: A support member disposed on the rear surface of the display panel, Wherein the spacer member is disposed between the support member and the vibration device.

5. The vibration generating device according to claim 4, wherein, The support member is spaced apart from the rear surface of the display panel, and there is a gap space between the support member and the rear surface of the display panel.

6. The vibration generating device according to claim 4, the vibration generating device further comprising: A separator disposed between the display panel and the support member and configured to separate the plurality of vibration structures from each other.

7. The vibration generating device according to claim 4, wherein, An area between the plurality of vibration structures overlaps with the spacer member.

8. The vibration generating device according to claim 1, wherein, The vibration device includes N or more vibration structures, where N is a natural number of 2 or greater.

9. The vibration generating device according to claim 8, wherein, The vibration structures are arranged to be spaced apart from each other in a width direction of the display panel or a length direction of the display panel that intersects the width direction.

10. The vibration generating device according to claim 9, wherein, Relative to the width direction, a separation distance between the vibration structures is 0.1 mm or greater and less than 3 cm.

11. The vibration generating device according to claim 1, the vibration generating device further comprising: A support member disposed on the rear surface of the display panel; And A separator disposed between the display panel and the support member, wherein the separator is configured to separate the plurality of vibration structures from each other.

12. The vibration generating device according to claim 1, wherein, Each of the plurality of vibration structures includes a first portion and a second portion between adjacent first portions.

13. The vibration generating device according to claim 12, wherein, An arrangement direction of the first portion and an arrangement direction of the second portion are the same as a width direction of the display panel, a length direction of the display panel, or a combination of the width direction of the display panel and the length direction of the display panel.

14. The vibration generating device according to claim 12, wherein, The first portion includes an inorganic material, and the second portion includes an organic material.

15. The vibration generating device according to claim 12, wherein, The spacer member is disposed to correspond to the first portion.

16. The vibration generating device according to claim 1, wherein, The vibration device includes a plurality of vibration generators including the plurality of vibration structures.

17. The vibration generating device according to claim 16, wherein, Each of the plurality of vibration generators is stacked and displaced in the same direction.

18. The vibration generating device according to claim 1, Among them, One layer of the plurality of layers of the at least one of the plurality of vibration structures is a vibration part, and wherein the vibration device further comprises: A first electrode layer disposed at a first surface of the vibration part; and A second electrode layer disposed at a second surface of the vibration part different from the first surface of the vibration part.

19. The vibration generating device according to claim 18, wherein, The vibration device comprises: A first protective member disposed on the first electrode layer; and A second protective member disposed below the second electrode layer.

20. The vibration generating device according to claim 19, wherein, The vibration device further comprises: A first adhesive layer disposed between the first electrode layer and the first protective member and between the vibration structures; and A second adhesive layer disposed between the second electrode layer and the second protective member and between the vibration structures.

21. The vibration generating device according to claim 19, wherein, The vibration device further comprises: A first power line disposed at the first protective member; A second power line disposed at the second protective member; and A pad portion electrically connected to each of the first power line and the second power line.

22. The vibration generating device according to claim 19, wherein, The pad member comprises: A vibration layer made of the same material as the vibration part of the at least one of the plurality of vibration structures; A first electrode layer disposed at a first surface of the vibration layer; and A second electrode layer disposed at a second surface of the vibration layer different from the first surface of the vibration layer.

23. The vibration generating device according to claim 22, wherein, For the display panel, the polarity of the first electrode layer of each of the plurality of vibration structures is different from the polarity of the second electrode layer of the pad member.

24. The vibration generating device according to claim 22, wherein The first electrode layer of each of the plurality of vibration structures is disposed closer to the display panel than the second electrode layer of each of the plurality of vibration structures, and The second electrode layer of the pad member is disposed closer to the display panel than the first electrode layer of the pad member.

25. The vibration generating device according to claim 18, wherein, The first protective member and the second protective member of each of the plurality of vibration structures share the pad member.

26. The vibration generating device according to claim 1, the vibration generating device further comprises: A plate between the display panel and the vibration device.

27. A vibration device, the vibration device comprises: A vibration part including a plurality of vibration structures, at least one of the plurality of vibration structures including a plurality of layers stacked on top of each other; and A pad member located outside or inside the vibration part, the pad member having a shape different from that of the plurality of vibration structures in a plan view and including a plurality of layers stacked on top of each other, Wherein, each of the plurality of layers of the spacer member includes the same material as that included in the corresponding layer of the plurality of layers of at least one of the plurality of vibration structures.

28. The vibration device according to claim 27, wherein, The spacer member is disposed between the plurality of vibration structures.

29. The vibration device according to claim 28, wherein, The spacer member includes a plurality of spacer members, and wherein, each vibration structure of the vibration structures has a corresponding spacer member.

30. The vibrating device according to claim 28, wherein, The spacer member is disposed parallel to the vibration structures of the vibration device.

31. The vibration device according to claim 28, the vibration device further comprising: A plurality of vibration generators, each vibration generator of the plurality of vibration generators includes the plurality of vibration structures, wherein, the vibration generator and the spacer member are disposed in a stacked arrangement.

32. The vibration device according to claim 27, Among them, One layer of the plurality of layers of at least one of the plurality of vibration structures is a vibration layer, and wherein, the vibration part further includes: A first electrode layer disposed at a first surface of the vibration layer; and A second electrode layer disposed at a second surface of the vibration layer different from the first surface of the vibration layer.

33. The vibration device according to claim 32, the vibration device further comprising: A first protection member disposed at a first surface of the first electrode layer; And A second protection member disposed at a second surface of the first electrode layer opposite to the first surface of the first electrode layer.

34. The vibrating device according to claim 33, wherein, The first protection member and the second protection member of the vibration part share the spacer member.

35. The vibration device according to claim 32, Among them, The spacer member includes: A vibration layer, the vibration layer includes the same material as the vibration layer of at least one of the plurality of vibration structures; A first electrode layer disposed at a first surface of the vibration layer; and A second electrode layer disposed at a second surface of the vibration layer different from the first surface of the vibration layer.

36. The vibrating device according to claim 35, wherein, The polarity of the first electrode layer of the vibration part is different from the polarity of the second electrode layer of the spacer member.

37. The vibration device according to claim 35, wherein: The spacer member is disposed in a partition area between the vibration structures, The first electrode layer of the vibration structure corresponds to the second electrode layer of the spacer member, and the second electrode layer of the vibration structure corresponds to the first electrode layer of the spacer member, and The polarity of the first electrode layer of the vibration structure is different from the polarity of the second electrode layer of the spacer member.

38. A vibration generating device, the vibration generating device comprising: A vibration member; And A vibration device disposed at the vibration member, wherein, the vibration device includes: A vibration part including a plurality of vibration structures, at least one of the plurality of vibration structures includes a plurality of layers stacked on top of each other; and A spacer member, the spacer member being outside or inside the vibration part, the spacer member having a shape different from that of the plurality of vibration structures in a plan view and including a plurality of layers stacked on top of each other. Wherein, each of the plurality of layers of the spacer member includes the same material as the corresponding layer included in the plurality of layers of at least one of the plurality of vibration structures.

39. The vibration generating device according to claim 38, wherein the vibration member includes a plate, and the plate includes a metallic material, or a single non-metallic material or a composite non-metallic material including one or more of wood, plastic, glass, cloth, and leather.

40. The vibration generating device according to claim 38, wherein, The vibration member includes a display panel including a plurality of pixels configured to display an image, or a non-display panel among a light-emitting diode illumination panel, an organic light-emitting illumination panel, and an inorganic light-emitting illumination panel.

41. The vibration generating device according to claim 38, wherein, The vibration member includes a display panel including a plurality of pixels configured to display an image, or one or more of vehicle interior materials, vehicle glass windows, building ceilings, building glass windows, building interior materials, aircraft interior materials, and aircraft glass windows.

42. The vibration generating device according to claim 38, Among them, one layer of the plurality of layers of at least one of the plurality of vibration structures is a vibration layer, and wherein, the vibration part further includes: a first electrode layer disposed at a first surface of the vibration layer; and a second electrode layer disposed at a second surface of the vibration layer different from the first surface of the vibration layer.

43. The vibration generating device according to claim 42, wherein, The vibration layer includes a first part including an inorganic material and a second part between adjacent first parts, and the second part includes an organic material.

44. The vibration generating device according to claim 42, wherein, The first electrode layer is disposed closer to the vibration member than the second electrode layer.

45. The vibration generating device according to claim 42, wherein, The spacer member includes: a vibration layer, the vibration layer including the same material as the vibration layer of at least one of the plurality of vibration structures; a first electrode layer disposed at a first surface of the vibration layer; and a second electrode layer disposed at a second surface of the vibration layer different from the first surface of the vibration layer.

46. The vibration generating device according to claim 45, wherein, The second electrode layer of the spacer member is disposed closer to the vibration member than the first electrode layer of the spacer member.

47. The vibration generating device according to claim 45, wherein, The polarity of the first electrode layer of the vibration part is different from the polarity of the second electrode layer of the spacer member.

48. The vibration generating device according to claim 38, wherein the vibration part includes a plurality of vibration generators, and each vibration generator of the plurality of vibration generators includes the plurality of vibration structures.

49. The vibration generating device according to claim 38, wherein, The spacer member includes a plurality of spacer members, each of the plurality of spacer members being configured to be equal to each of the plurality of vibration structures.

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