Display devices

Abstract

A display device includes a display panel configured to display an image; a vibration generating device located on a rear surface of the display panel to vibrate the display panel; and a support member located on the rear surface of the display panel and including a first hole. The first hole may be provided over the entire area or around the periphery of the vibration generating device.

Description

Technical Field

[0001] The present disclosure relates to a display device. Background Art

[0002] Display devices are equipped in electronic devices such as televisions (TVs), monitors, notebook computers, smart phones, tablet computers, electronic notepads, electronic tablets, wearable devices, watch phones, portable information devices, navigation devices, and automobile control display devices, and are widely used as screens for displaying images.

[0003] Recently, there is an increasing demand for slimming and thinning of electronic devices. Therefore, there is an increasing demand for slimming and thinning of speakers used in electronic devices, and piezoelectric elements that can be implemented with a thin thickness instead of voice coils are attracting much attention.

[0004] When a piezoelectric element is applied to a display device, the thickness of the display device can be reduced, but there is a problem in that it is difficult to realize a sound of a low-pitched vocal cord. Summary of the Invention

[0005] Therefore, the inventors have recognized the above-mentioned problems and invented a display device having a novel structure, which has a thin thickness and enhances the sound characteristics of low-pitched vocal ranges, thereby outputting good-quality sound.

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

[0007] An aspect of the present disclosure provides a display apparatus having a structure that enhances sound characteristics of a low-pitched vocal range without increasing the thickness of the display apparatus having a structure for outputting sound, thereby outputting excellent sound.

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

[0009] To achieve these and other aspects of the inventive concept, as implemented and broadly described, a display device includes a display panel configured to display an image, a vibration generating device at a rear surface of the display panel that vibrates the display panel, and a support member at the rear surface of the display panel and including a first hole.

[0010] In another aspect of the present disclosure, a display device includes: a display panel, which is configured to display an image and includes a first area and a second area; a first vibration generating device, which vibrates the first area at the rear surface of the display panel; a second vibration generating device, which vibrates the second area at the rear surface of the display panel; and a supporting member, which is at the rear surface of the display panel, the supporting member being configured to include a first hole corresponding to the first vibration generating device and the second vibration generating device.

[0011] In a display device according to an embodiment of the present disclosure, a supporting member including a hole for discharging air from an internal portion of the display device can be provided, thereby reducing the air pressure in the internal portion of the display device to expand the reproduction frequency band of the low-pitched sound band, thereby improving the low-pitched sound characteristics.

[0012] In the display apparatus according to the embodiment of the present disclosure, the sound absorbing member provided at the inner surface of the support member may be provided and may absorb vibration of the support member to expand the reproduction band of the low-pitched sound band, thereby improving low-pitched sound characteristics.

[0013] In the display device according to the embodiment of the present disclosure, a vibration plate disposed at the inner surface of the support member may be provided, and thus low-pitched sound may be realized through the vibration plate to expand the reproduction band of the low-pitched sound band, thereby improving low-pitched sound characteristics.

[0014] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the inventive concepts as claimed.

[0015] Note 1. A display device, comprising:

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

[0017] a vibration generating device at a rear surface of the display panel to vibrate the display panel; and

[0018] A supporting member is at the rear surface of the display panel and includes a first hole.

[0019] Supplementary note 2. The display device according to Supplementary note 1, wherein the vibration generating device includes a plurality of inorganic material portions and a plurality of organic material portions, and the plurality of inorganic material portions and the plurality of organic material portions are alternately and repeatedly arranged on the same plane.

[0020] Supplementary note 3. The display apparatus according to Supplementary note 1, wherein the vibration generating device is provided as a plurality of vibration generating devices spaced apart from each other.

[0021] Supplementary note 4. The display device according to Supplementary note 3, wherein the plurality of vibration generating devices are driven as a single vibration device.

[0022] Supplementary note 5. The display apparatus according to Supplementary note 3, wherein the plurality of vibration generating devices are arranged to have a distance of 0.1 mm or more and less than 3 cm from each other.

[0023] Supplementary note 6. The display device according to Supplementary note 5, wherein the distance is equal to or greater than 0.1 mm and less than 5 mm.

[0024] Supplementary note 7. The display device according to Supplementary note 1, wherein the first hole is provided at the entire area or periphery of the vibration generating device.

[0025] Supplementary note 8. The display device according to Supplementary note 1, wherein areas of the first holes are the same or different based on the intensity of the sound waves generated by the vibration generating device.

[0026] Note 9. A display device according to Note 8, wherein the total area of ​​the first holes arranged at the first region where sound waves having a first intensity arrive is larger than the total area of ​​the first holes arranged at the second region where sound waves having a second intensity lower than the first intensity arrive.

[0027] Note 10. A display device according to Note 9, wherein the area of ​​each first hole set in the first area is the same as the area of ​​each first hole set in the second area, and the number of first holes set in the first area is greater than the number of first holes set in the second area.

[0028] Note 11. A display device according to Note 9, wherein the area of ​​each first hole set in the first area is larger than the area of ​​each first hole set in the second area, and the number of first holes set in the first area is smaller than the number of first holes set in the second area.

[0029] Supplementary note 12. The display apparatus according to Supplementary note 1, further comprising a sound absorbing member provided at a surface facing the vibration generating device among surfaces of the supporting member.

[0030] Supplementary note 13. The display device according to Supplementary note 12, wherein the sound absorbing member further includes a second hole corresponding to the first hole.

[0031] Supplementary note 14. The display apparatus according to Supplementary note 1, further comprising a vibration plate provided at a surface facing the vibration generating device among surfaces of the supporting member.

[0032] Supplementary note 15. The display device according to Supplementary note 14, wherein the vibration plate is configured to vibrate based on the sound waves generated by the vibration generating device to generate low-pitched sound.

[0033] Supplementary note 16. The display device according to Supplementary note 14, wherein the vibration plate further includes a second hole corresponding to the first hole.

[0034] Supplementary note 17. The display device according to Supplementary note 1, further comprising a first spacer between the rear surface of the display panel and the supporting member to surround the vibration generating device,

[0035] The first hole is provided in an inner area of ​​the first partition.

[0036] Supplementary note 18. The display device according to Supplementary note 17, wherein a size of the first partition is adjusted based on a range of a sound track to be generated by the vibration of the display panel caused by the vibration generating device.

[0037] Supplement 19. The display device according to Supplement 1, further comprising:

[0038] a first spacer between the rear surface of the display panel and the supporting member, the first spacer surrounding the vibration generating device; and

[0039] a second partition, the second partition being between the vibration generating device and the first partition, the second partition surrounding the vibration generating device,

[0040] Wherein, the first hole is provided in an inner area of ​​the second partition.

[0041] Supplementary note 20. The display device according to Supplementary note 19, wherein a size of the second partition is adjusted based on a range of a sound cord to be generated by the vibration of the display panel caused by the vibration generating device.

[0042] Supplement 21. The display device according to Supplement 1,

[0043] wherein the vibration generating device is configured to be provided as one or more vibration generating devices at the rear surface of the display panel, and

[0044] Wherein, the first hole is provided at each of the one or more vibration generating devices.

[0045] Note 22. A display device, comprising:

[0046] a display panel configured to display an image and including a first area and a second area;

[0047] a first vibration generating device at a rear surface of the display panel to vibrate the first area;

[0048] a second vibration generating device at the rear surface of the display panel to vibrate the second area; and

[0049] a supporting member at the rear surface of the display panel,

[0050] Wherein, the supporting member is configured to include a first hole corresponding to the first vibration generating device and the second vibration generating device.

[0051] Note 23. A display device according to Note 22, wherein each of the first vibration generating device and the second vibration generating device includes a plurality of inorganic material parts and a plurality of organic material parts, and the plurality of inorganic material parts and the plurality of organic material parts are alternately and repeatedly arranged on the same plane.

[0052] Supplementary note 24. The display apparatus according to Supplementary note 22, wherein each of the first vibration generating device and the second vibration generating device is provided as a plurality of vibration generating devices spaced apart from each other.

[0053] Supplementary note 25. The display device according to Supplementary note 24, wherein the plurality of vibration generating devices are driven as a single vibration device.

[0054] Supplementary note 26. The display apparatus according to Supplementary note 24, wherein the plurality of vibration generating devices are arranged to have a distance of 0.1 mm or more and less than 3 cm from each other.

[0055] Supplementary note 27. The display device according to Supplementary note 26, wherein the distance is equal to or greater than 0.1 mm and less than 5 mm.

[0056] Supplementary note 28. The display device according to Supplementary note 22, wherein the first hole is provided at an entire area or a periphery of the first vibration generating device and at an entire area or a periphery of the second vibration generating device.

[0057] Note 29. A display device according to Note 22, wherein the area of ​​the first hole corresponding to the first vibration generating device and the area of ​​the first hole corresponding to the second vibration generating device are the same or different based on the intensity of the sound waves generated by the vibration of each of the first vibration generating device and the second vibration generating device.

[0058] Supplement 30. The display device according to Supplement 29, wherein:

[0059] The first vibration generating device is configured to generate a sound wave having a first intensity,

[0060] The second vibration generating device is configured to generate a sound wave having a second intensity lower than the first intensity, and

[0061] A total area of ​​the first holes corresponding to the first vibration generating device is greater than a total area of ​​the first holes corresponding to the second vibration generating device.

[0062] Note 31. A display device according to Note 30, wherein the area of ​​each first hole corresponding to the first vibration generating device is the same as the area of ​​each first hole corresponding to the second vibration generating device, and the number of first holes corresponding to the first vibration generating device is greater than the number of first holes corresponding to the second vibration generating device.

[0063] Note 32. A display device according to Note 30, wherein the area of ​​each first hole corresponding to the first vibration generating device is larger than the area of ​​each first hole corresponding to the second vibration generating device, and the number of first holes corresponding to the first vibration generating device is smaller than the number of first holes corresponding to the second vibration generating device.

[0064] Supplementary note 33. The display device according to Supplementary note 22, further comprising a sound absorbing member provided at a surface facing the first vibration generating device and the second vibration generating device among surfaces of the supporting member.

[0065] Supplementary note 34. The display device according to Supplementary note 33, wherein the sound absorbing member further includes a second hole, and the second hole is arranged to correspond to the first hole.

[0066] Supplementary note 35. The display device according to Supplementary note 22, further comprising a vibration plate provided at a surface facing the first vibration generating device and the second vibration generating device among surfaces of the supporting member.

[0067] Supplementary note 36. The display device according to Supplementary note 35, wherein the vibration plate is configured to vibrate based on sound waves generated by the first vibration generating device and the second vibration generating device to generate low-pitched sound.

[0068] Supplementary note 37. The display device according to Supplementary note 35, wherein the vibration plate further includes a third hole, and the third hole is arranged to correspond to the first hole.

[0069] Supplementary note 38. The display device according to Supplementary note 22, further comprising a spacer between the rear surface of the display panel and the supporting member,

[0070] wherein the partition further comprises at least one or more partitions for dividing the first area and the second area, and

[0071] The first holes are arranged to correspond to the first area and the second area.

[0072] Note 39. A display device according to Note 38, wherein the at least one or more partitions include a first partition arranged between the first vibration generating device and the second vibration generating device, and at least one or more second partitions arranged to be parallel to the first partition and spaced apart from each other by a certain interval.

[0073] Supplement 40. The display device according to Supplement 38,

[0074] Wherein, the partition further includes a third partition, and the third partition is configured to surround the entire first vibration generating device and the second vibration generating device, and

[0075] The first hole is provided at an inner area of ​​the third partition.

[0076] Supplement 41. The display device according to Supplement 40, further comprising:

[0077] a first air gap surrounded by the at least one or more spacers and the third spacer at the first region; and

[0078] a second air gap surrounded by the at least one or more spacers and the third spacer at the second region,

[0079] The first hole is configured to correspond to the first air gap and the second air gap.

[0080] Supplement 42. The display device according to Supplement 38,

[0081] Wherein, the separator further comprises:

[0082] a fourth partition member surrounding the first vibration generating device; and

[0083] a fifth partition member surrounding the second vibration generating device, and

[0084] The first hole is provided in an inner region of the fourth separator and an inner region of the fifth separator.

[0085] Note 43. A display device according to Note 42, wherein the size of each of the fourth partition and the fifth partition is adjusted based on the range of the sound cord to be generated by the vibration of the display panel caused by each of the first vibration generating device and the second vibration generating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of the disclosure and together with the description serve to explain various principles of the disclosure.

[0087] Figure 1 A display device according to an embodiment of the present disclosure is illustrated.

[0088] Figure 2 It is along Figure 1 The cross-sectional view is taken along line II'.

[0089] Figure 3 A vibration generating device according to an embodiment of the present disclosure is illustrated.

[0090] Figure 4 A vibration generating device according to another embodiment of the present disclosure is illustrated.

[0091] Figure 5 A vibration generating device according to another embodiment of the present disclosure is illustrated.

[0092] Figure 6 A vibration generating device according to another embodiment of the present disclosure is illustrated.

[0093] Figure 7 In a display device according to another embodiment of the present disclosure, Figure 1 The cross-sectional view is taken along line II'.

[0094] Figure 8 A vibration generating device according to another embodiment of the present disclosure is illustrated.

[0095] Figure 9 It is along Figure 8 The cross-sectional view is taken along line II-II'.

[0096] Figure 10A A display device according to another embodiment of the present disclosure is illustrated.

[0097] Figure 10B A display device according to another embodiment of the present disclosure is illustrated.

[0098] Figure 11A display device according to another embodiment of the present disclosure is illustrated.

[0099] Figure 12A Illustrated Figure 11 An arrangement of the first hole according to an embodiment of the present disclosure in a display device is shown.

[0100] Figure 12B Illustrated Figure 11 An arrangement of the first hole according to an embodiment of the present disclosure in a display device is shown.

[0101] Figure 12C Illustrated Figure 11 An arrangement of the first hole according to an embodiment of the present disclosure in a display device is shown.

[0102] Figure 12D Illustrated Figure 11 An arrangement of the first hole according to an embodiment of the present disclosure in a display device is shown.

[0103] Figure 13 In a display device according to another embodiment of the present disclosure, Figure 1 The cross-sectional view is taken along line II'.

[0104] Figure 14 In a display device according to another embodiment of the present disclosure, Figure 1 The cross-sectional view is taken along line II'.

[0105] Throughout the drawings and detailed description, unless otherwise described, the same drawing reference numerals should be understood to refer to the same elements, features, and structures. The relative sizes and descriptions of these elements may be exaggerated for clarity, illustration, and convenience. DETAILED DESCRIPTION

[0106] Reference will now be made in detail to embodiments of the present disclosure, examples of which may be shown in the accompanying drawings. In the following description, detailed descriptions of known functions or configurations related to this document will be omitted when it is determined that such detailed descriptions would unnecessarily obscure the main points of the inventive concept. The described progression of processing steps and / or operations are examples; however, the order of the steps and / or operations is not limited to the order set forth herein and may be changed as is known in the art, except that the steps and / or operations must occur in a particular order. Like reference numerals represent like elements throughout. The names of the various elements used in the following description have been selected solely for ease of writing the specification and may therefore be different from those used in the actual product.

[0107] The advantages and features of the present disclosure and their implementation methods will be illustrated by the following embodiments described with reference to the accompanying drawings. However, the present disclosure can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. Furthermore, the present disclosure is limited only by the scope of the claims.

[0108] The shapes, sizes, proportions, angles and quantities disclosed in the drawings for describing the embodiments of the present disclosure are merely examples, and therefore, the embodiments of the present disclosure are not limited to the details shown. Similar reference numerals always refer to similar elements. In the following description, when it is determined that a detailed description of related known functions or configurations unnecessarily obscures the main points of the present disclosure, the detailed description will be omitted. When "comprising", "having" and "including" described in this specification are used, another component may be added unless "only" is used. Terms in the singular may include plural forms unless mentioned otherwise.

[0109] When explaining 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.

[0110] When describing a positional relationship, for example, when the positional relationship between two components is described as, for example, "on," "over," "under," and "next to," one or more other components may be disposed between the two components, unless more restrictive terms such as "only" or "directly" are used.

[0111] In the description of the embodiments, when a structure is described as being placed “on or over” or “under or below” another structure, the description should be interpreted to include the case where the structures are in contact with each other and the case where a third structure is provided therebetween.

[0112] When describing temporal relationships, for example, when a temporal sequence is described as, for example, "after," "following," "next," and "before," discontinuities may be included unless more restrictive terms such as "just," "immediately," or "directly" are used.

[0113] It should be understood that although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this disclosure.

[0114] When describing the elements of the present disclosure, the terms "first," "second," "a," "b," "(a)," "(b)," etc. may be used. These terms are intended to identify the corresponding elements from other elements, and the basis, order, or number of the corresponding elements should not be limited by these terms. When an element is "connected," "coupled," or "adhered" to another element or layer, unless otherwise specified, the element or layer may be not only directly connected or adhered to the other element or layer, but also indirectly connected or adhered to the other element or layer, with one or more intermediate elements or layers "disposed" or "interposed" between the elements or layers.

[0115] The term "at least one" should be understood to include any and all combinations of one or more of the relevant listed items. For example, the meaning of "at least one of the first, second, and third items" means all items listed from two or more of the first, second, and third items, as well as combinations of the first, second, or third items.

[0116] In the present disclosure, examples of display devices may include display devices 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 complete set (or complete set of equipment) or a complete set of electronic devices as a complete product (or final product) including an LCM or OLED module, such as a notebook computer, a TV, a computer monitor, an equipment device including an automotive device or another type of device for a vehicle, or a mobile electronic device such as a smart phone or an electronic tablet.

[0117] Therefore, in the present disclosure, examples of a display device may include a display device itself (such as an LCM or OLED module) and a complete device that is a final consumer device or application product including the LCM or OLED module.

[0118] In some embodiments, an LCM or OLED module including a display panel and a driver may be referred to as a narrow display device, and an electronic device as a final product including the LCM or OLED module may be referred to as a complete set of equipment. For example, a narrow display device may include a display panel such as an LCD or OLED and a source printed circuit board (PCB) as a controller for driving the display panel. The complete set of equipment may also include a complete PCB, which is a complete controller electrically connected to the source PCB to control the complete set of equipment as a whole.

[0119] The display panel applied to the embodiment of the present disclosure can use all types of display panels such as a liquid crystal display panel, an organic light emitting diode (OLED) display panel, and an electroluminescent display panel, but the embodiment of the present disclosure is not limited to a specific display panel that is vibrated by the vibration device (or vibration device) according to the embodiment of the present disclosure to output sound. The shape or size of the display panel applied to the display device according to the embodiment of the present disclosure is not limited thereto.

[0120] For example, when the display panel is a liquid crystal display panel, the display panel may include a plurality of gate lines, a plurality of data lines, and a plurality of pixels respectively arranged in a plurality of pixel areas defined by the intersection of the gate lines and the data lines. In addition, the display panel may include: an array substrate including a thin film transistor (TFT), which is a switching element for adjusting the transmittance of each of the plurality of pixels; an upper substrate including a color filter and / or a black matrix; and a liquid crystal layer located between the array substrate and the upper substrate.

[0121] When the display panel is an organic light-emitting display panel, the display panel may include a plurality of gate lines, a plurality of data lines, and a plurality of pixels respectively arranged in a plurality of pixel areas defined by the intersection of the gate lines and the data lines. In addition, the display panel may include: an array substrate including a TFT as an element for selectively applying a voltage to each pixel; an organic light-emitting device layer on the array substrate; and an encapsulation substrate provided on the array substrate to cover the organic light-emitting device layer. The encapsulation substrate may protect the TFT and the organic light-emitting device layer from external impacts and may prevent water or oxygen from penetrating into the organic light-emitting device layer. In addition, the layer provided on the array substrate may include an inorganic light-emitting layer (e.g., a nano-sized material layer, quantum dots, a light-emitting layer, etc.). As another example, the layer provided on the array substrate may include a micro light-emitting diode.

[0122] In the present disclosure, the display device may further include a backing, such as a metal plate attached to the display panel, but the embodiments of the present disclosure are not limited thereto and may also include other structures, such as other structures made of different materials.

[0123] The features of the various embodiments of the present disclosure may be coupled or combined with each other in part or in whole, and may interoperate with each other in various ways and be driven technically, as will be fully understood by those skilled in the art. The embodiments of the present disclosure may be performed independently of each other, or may be performed together in a mutually dependent relationship.

[0124] 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 therefore is not limited to the scale shown in the drawings.

[0125] Hereinafter, a display device according to some embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0126] Figure 1 A display device according to an embodiment of the present disclosure is illustrated. Figure 2 It is along Figure 1 The cross-sectional view is taken along line II'.

[0127] Reference Figure 1 and Figure 2 The display device 10 according to an embodiment of the present disclosure may include a display panel 100, a vibration generating device 200 provided on a rear surface (or backside surface, hereinafter referred to as a rear surface) of the display panel 100, and a support member 300 provided at the rear surface of the display panel 100.

[0128] The display panel 100 may display an image (eg, an electronic image or a digital image). For example, the display panel 100 may output light to display an image.

[0129] According to an embodiment of the present disclosure, the display panel 100 may be a curved display panel or one of all types of display panels such as a liquid crystal display panel, an organic light emitting display panel, a micro light emitting diode display panel, an electroluminescent display panel, and an electrowetting display panel, but the embodiment of the present disclosure is not limited thereto. According to another embodiment of the present disclosure, the display panel 100 may be a flexible display panel. For example, the display panel 100 may be a flexible liquid crystal display panel, a flexible organic light emitting display panel, a flexible micro light emitting diode display panel, a flexible electroluminescent display panel, or a flexible electrowetting display panel, but the embodiment of the present disclosure is not limited thereto. According to another embodiment of the present disclosure, the display panel 100 may be a display panel integrated with a touch panel. For example, the display panel integrated with a touch panel may include a touch panel attached to the display panel, or may include a touch electrode layer provided at the display panel.

[0130] The display panel 100 according to an embodiment of the present disclosure may include: a display area AA that displays an image based on the driving of a plurality of pixels arranged on a substrate; and a non-display area BA that surrounds the display area. For example, the display panel 100 may be implemented based on a non-frame (or borderless) structure so that the entire front surface of the substrate is implemented as a display area without a non-display area. For example, the display panel 100 may be a transparent display panel including a light-transmitting portion provided at at least one of the plurality of pixels.

[0131] Based on the structure of the pixel array layer including an anode electrode, a cathode electrode, and a light-emitting device layer, the display panel 100 according to the embodiment of the present disclosure can display images in a type such as a top emission type, a bottom emission type, or a double-sided emission type. In the top emission type, visible light emitted from the pixel array layer can be irradiated onto an area in front of the base substrate to allow an image to be displayed, while in the bottom emission type, visible light emitted from the pixel array layer can be irradiated onto a rear area behind the base substrate to allow an image to be displayed. In the double-sided emission type, visible light emitted from the pixel array layer can be irradiated onto a front area and a rear area behind the base substrate to allow an image to be displayed.

[0132] For example, the light-emitting device layer may include an organic light-emitting layer or a micro-light-emitting diode device electrically connected to each of an anode electrode and a cathode electrode. The micro-light-emitting diode device may be a light-emitting diode implemented as an integrated circuit (IC) type or a chip type, and 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 light-emitting device of the light-emitting device layer provided in each pixel region.

[0133] The display panel 100 according to an embodiment of the present disclosure may include a bending portion that is bent or curved to have a curved shape or a specific curvature radius.

[0134] The bent portion of the display panel 100 may be implemented in at least one of one edge (or one periphery) and another edge (or another periphery) of the display panel 100 that are parallel to each other. One edge and / or the other edge of the display panel 100 that implements the bent portion may include only the non-display area BA, or may include the edges of the non-display area BA and the display area AA. For example, the display panel 100 including the bent portion provided by bending the non-display area BA may have a one-side frame bending structure or a two-side frame bending structure. In addition, the display panel 100 including the edge of the display area AA and the bent portion provided by bending the non-display area BA may have a single-sided active bending structure or a double-sided active bending structure.

[0135] The support member 300 may be referred to as other terms such as a cover bottom, a plate bottom, a back cover, a base frame, a metal frame, a metal chassis, a chassis base, or an m-chassis. Therefore, the support member 300 may be implemented as any type of frame or plate structure provided on the rear surface of the display device 10 (or the display panel 100). The support member 300 may be a rear structure.

[0136] 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 of a glass material, a metal material, and a plastic material. For example, the support member 300 including a glass material may be sapphire glass. For example, the support member 300 including a metal material may include one or more of aluminum (Al), an Al alloy, magnesium (Mg), a Mg alloy, and an iron (Fe)-nickel (Ni) alloy, but embodiments of the present disclosure are not limited thereto.

[0137] The inventors have recognized the problem of deteriorating the sonic characteristics of low-pitched vocal cords when the vibration generating device 200 is configured with a piezoelectric element, and have therefore conducted various experiments to improve the sonic characteristics of low-pitched vocal cords. Through these experiments, the inventors have developed a display device having a novel structure for enhancing the sonic characteristics of low-pitched vocal cords. This will be described in detail below.

[0138] The inventors have recognized that in order to improve the sound characteristics of the low-pitched vocal range, the internal air pressure of the display device 10 should be reduced. For example, when the air pressure of the internal portion of the display device 10 is discharged to the outside, the sound of the vibration generating device 200 can be improved. The vibration generating device 200 can be arranged between the display panel 100 and the support member 300, and therefore, a structure for discharging the internal air pressure of the display device 10 to the outside may be required. The support member 300 may include a first hole 301 to discharge the internal air pressure of the display device 10 to the outside, thereby reducing the internal air pressure of the display device 10. The first hole 301 of the support member 300 can be provided at a certain area of ​​the support member 300 to reduce the internal air pressure of the gap space GS of the display device 10. For example, the first hole 301 of the support member 300 can reduce the internal air pressure of the gap space GS to expand the frequency band of the low-pitched vocal range, thereby improving the sound characteristics of the low-pitched vocal range. When the first hole 301 is not provided in the support member 300, the internal air pressure of the vibration generating device 200 can be increased by the sound or sound waves generated by the vibration of the vibration generating device 200, thereby reducing the sound characteristics of the low-pitched vocal range. According to an embodiment of the present disclosure, when the first hole 301 is provided in the support member 300, regardless of the sound waves or sound generated by the vibration of the vibration generating device 200, air can still be discharged through the first hole 301, thereby reducing the internal air pressure of the gap space GS. As a result, the frequency band of the low-pitched vocal range can be expanded, thereby improving the sound characteristics of the low-pitched vocal range.

[0139] For example, when sound waves are generated based on the vibration of the vibration generating device 200, the first hole 301 may be provided at a position for reducing the internal air pressure of the gap space GS. For example, the shape, number, and size of the first hole 301 may be variously adjusted. Figure 1 As shown, the first holes 301 may be arranged at certain intervals (or distances) in the region of the support member 300 corresponding to the vibration generating device 200. According to an embodiment of the present disclosure, the first holes 301 may be provided along a portion (e.g., a periphery) of the vibration generating device 200. According to an embodiment of the present disclosure, the number and area of ​​the first holes 301 may be determined based on the intensity of the sound waves generated by the vibration of the vibration generating device 200.

[0140] For example, compared to first holes 301 located in areas of the support member 300 where sound waves with high intensity arrive, more first holes 301 can be provided or have a larger area. For example, compared to first holes 301 located in areas where sound waves with low intensity arrive, more first holes 301 can be provided in the support member 300 in areas where sound waves with high intensity arrive, allowing more air to be discharged to the outside. For example, when a first area of ​​the support member 300 where sound waves with a first intensity arrive and a second area of ​​the support member 300 where sound waves with a second intensity less than the first intensity arrive are provided, the total area of ​​the first holes 301 located in the first area can be greater than the total area of ​​the first holes 301 located in the second area. For example, the area of ​​the first holes 301 located in the first area of ​​the support member 300 can be the same as the area of ​​the first holes 301 located in the second area of ​​the support member 300, and more first holes 301 can be provided in the first area of ​​the support member 300. As another example, the first holes 301 disposed at the first region of the support member 300 may have a larger area than the first holes 301 disposed at the second region, and may be provided in smaller number than the first holes 301 disposed at the second region.

[0141] The support member 300 according to an embodiment of the present disclosure may additionally cover the side surfaces (or lateral side surfaces) of the display panel 100. For example, the support member 300 may include a rear surface portion 310 that covers the rear surface of the display panel 100 with a gap space GS therebetween, and a side surface portion 330 that is connected to an end portion of the rear surface portion 310 and covers the side surfaces of the display panel 100. However, embodiments of the present disclosure are not limited thereto, and the support member 300 may be a single-body structure in which the rear surface portion 310 and the side surface portion 330 are provided as one body.

[0142] The side surface portion 330 may be implemented as a separate middle frame connected to the support member 300. In this case, the side surface portion 330 implemented as the middle frame may cover the support member 300, and, for example, may cover one or more of the side surface of the rear surface portion 310 and the side surface of the display panel 100. For example, the side surface portion 330 implemented as the middle frame may include a material that is the same as or different from that of the support member 300, among a metal material and a plastic material.

[0143] The support member 300 according to an embodiment of the present disclosure may be provided to the rear periphery (or rear edge) of the display panel 100 or the periphery of the rear surface of the display panel 100 through the panel connection member 400. For example, the panel connection member 400 may be provided between the rear periphery of the display panel 100 and the front periphery (or edge) of the support member 300 (or the periphery of the front surface of the support member 300), and may attach the display panel 100 to the support member 300. The panel connection member 400 according to an embodiment of the present disclosure may be implemented with a double-sided tape, a single-sided tape, a double-sided foam pad, a single-sided adhesive pad, a double-sided adhesive pad, a single-sided adhesive foam pad, or a double-sided adhesive foam pad, but the embodiments of the present disclosure are not limited thereto.

[0144] The display device according to an embodiment of the present disclosure may further include a front member 500 covering the non-display area BA of the display panel 100. The front member 500 may have a picture frame shape including an opening portion overlapping the display area AA of the display panel 100. For example, the front member 500 may be coupled (or connected) to the rear surface portion 310 or the middle frame and may cover the non-display area BA of the display panel 100, thereby supporting or fixing the display panel 100. The front member 500 may be in the front edge (or front periphery) of the display panel 100 and may be directly exposed to the user (or observer), and thus, the aesthetic design appearance of the display device 10 may be reduced and the border width of the display device 10 may be increased. To address such issues, the display panel 100 may be connected to the support member 300 via the panel connection member 400, and thus, the front member 500 may be omitted (or removed), thereby reducing the border width of the display device 10 and enhancing the aesthetic design appearance of the display device 10.

[0145] The vibration generating device 200 may be provided at the rear surface of the display panel 100 or connected to the rear surface of the display panel 100. The vibration generating device 200 may be attached to the rear surface of the display panel 100 by an adhesive member 150.

[0146] The adhesive member 150 according to an embodiment of the present disclosure may be provided between the rear surface of the display panel 100 and the vibration generating device 200. For example, the adhesive member 150 may include an adhesive or a double-sided adhesive tape including an adhesive layer having good adhesive force or adhesion. For example, the adhesive layer of the adhesive member 150 may include epoxy resin, acrylic, silicone resin, polyurethane or paraffin wax, but the embodiment is not limited thereto. The adhesive layer of the adhesive member 150 may further include additives such as a tackifier, a wax component or an antioxidant. The additive may prevent (or reduce) the adhesive member 150 from being detached (peeled off) from the display panel 100 by the vibration of the vibration generating device 200. For example, the tackifier may be a rosin derivative, etc., the wax component may be paraffin wax, etc., and the antioxidant may be a phenol-based antioxidant such as a thioester. However, the embodiment of the present disclosure is not limited thereto.

[0147] According to another embodiment of the present disclosure, the adhesive member 150 may further include a hollow portion provided between the display panel 100 and the vibration generating device 200. The hollow portion of the adhesive member 150 may provide an air gap between the display panel 100 and the vibration generating device 200. Due to the air gap, sound waves (or sound pressure levels or sounds) based on the vibration of the vibration generating device 200 may not be dispersed by the adhesive member 150 and may be concentrated on the display panel 100, and thus, the loss of vibration caused by the adhesive member 150 may be minimized, thereby increasing the sound pressure level characteristics of the sound generated based on the vibration of the display panel 100.

[0148] The vibration generating device 200 according to an embodiment of the present disclosure may be implemented as a membrane type. Since the vibration generating device 200 may be implemented as a membrane type, the vibration generating device 200 may have a thickness thinner than that of the display panel 100, and therefore, regardless of the arrangement of the vibration generating device 200, the thickness of the display panel 100 may not increase. The vibration generating device 200 may be referred to as a flexible sound generator, a flexible sound generating module, a flexible sound generating device, a flexible actuator, a flexible speaker, a flexible piezoelectric speaker, a sound generating module, a sound generating device, a membrane actuator, a membrane-type piezoelectric composite actuator, a membrane speaker, a membrane-type piezoelectric speaker, or a membrane-type piezoelectric composite speaker using the display panel 100 as a vibration plate, but the embodiments of the present disclosure are not limited thereto.

[0149] The vibration generating device 200 according to an embodiment of the present disclosure may include a plurality of first parts 210 and a plurality of second parts 220. For example, the plurality of first parts 210 may have piezoelectric characteristics, and the plurality of second parts 220 may improve or compensate for the impact resistance of the first parts 210 and have flexibility.

[0150] The plurality of first portions 210 according to an embodiment of the present disclosure may each be configured as an inorganic material portion. The inorganic material portion may include an electroactive material. The electroactive material may have a characteristic in which, when pressure is applied to the crystal structure or distortion (or bending) is caused by an external force, a potential difference is generated due to dielectric polarization caused by a change in the relative positions of positive (+) ions and negative (-) ions, and vibration is generated by an electric field based on a voltage applied thereto.

[0151] Each of the plurality of second portions 220 according to an embodiment of the present disclosure may be configured as an organic material portion and may fill the space between the inorganic material portions serving as the first portion 210. Each organic material portion may include a flexible material. Each organic material portion may be between a plurality of inorganic material portions, may absorb impact or vibration applied to the inorganic material portion (or the first portion), may release stress concentrated on the inorganic material portion to enhance the overall durability of the vibration generating device 200, and may provide flexibility for the vibration generating device 200. The vibration generating device 200 may be flexible. Therefore, the vibration generating device 200 may be bent into a shape that matches the shape of the display panel 100.

[0152] Each of the plurality of second portions 220 can be disposed between the plurality of first portions 210. The plurality of first portions 210 and the plurality of second portions 220 can be disposed (or arranged) in parallel on the same plane (or on the same layer). For example, the first portions 210 and the second portions 220 can be alternately and repeatedly disposed (or connected) in parallel on the same plane to have a single film type. Thus, the vibration generating device 200 can have a single film type. For example, the plurality of first portions 210 can have a structure connected to one side. For example, the plurality of first portions 210 can have a structure connected to the entire vibration generating device 200. Each of the plurality of second portions 220 can be configured to fill the gap or space between two adjacent first portions of the plurality of first portions 210 and can be connected or attached to the first portion 210 adjacent thereto. Therefore, in the vibration generating device 200, the vibration energy of the link in the unit cell of each first portion 210 can be increased by the corresponding second portion 220. Therefore, vibration can be increased, and piezoelectric properties and flexibility can be ensured. In addition, in the vibration generating device 200, the first portion 210 and the second portion 220 can be alternately and repeatedly arranged at the same plane with respect to one side of the vibration generating device 200 in the longitudinal direction X, and thus a large-area composite film (or organic / inorganic composite film) having a single-layer structure can be constructed, and the large-area composite film can have a thin thickness. As a result, the thickness of the display device 10 does not increase.

[0153] Therefore, in the vibration generating device 200 of the display device 10 according to an embodiment of the present disclosure, the inorganic material part (first part) and the organic material part (second part) can be arranged on the same layer, so that the impact transmitted to the inorganic material part can be absorbed by the organic material part, thereby preventing the inorganic material part from being damaged by the external impact applied to the display device 10 from the outside, and minimizing the reduction in vibration performance (or reduction in sound performance) caused by the damage.

[0154] In addition, the vibration generating device 200 of the display device according to the embodiment of the present disclosure may include a piezoelectric ceramic having a perovskite crystal structure, and thus can vibrate (or mechanically displace) in response to an externally applied electrical signal. For example, when an alternating current (AC) voltage is applied to the inorganic material portion (first portion), the inorganic material portion can alternately contract and expand based on the inverse piezoelectric effect. Therefore, based on the bending phenomenon in which the bending direction alternately changes, the vibration generating device 200 can vibrate to vibrate the display panel 100 to provide sound or tactile feedback to the user based on the vibration.

[0155] In addition, the vibration generating device 200 according to an embodiment of the present disclosure may have a size corresponding to the display area AA of the display panel 100. The size of the vibration generating device 200 may be 0.9 to 1.1 times the size of the display area AA, but the embodiments of the present disclosure are not limited thereto. For example, the size of the vibration generating device 200 may be the same as or approximately the same as the size of the display area AA of the display panel 100, and thus, the vibration generating device 200 may cover most of the area of ​​the display panel 100, and the vibration generated by the vibration generating device 200 may vibrate the entire portion of the display panel 100, and thus, the localization of the sound may be higher, and the user's satisfaction may be improved.

[0156] In addition, the contact area (or panel coverage) between the display panel 100 and the vibration generating device 200 can be increased, and thus, the vibration area of ​​the display panel 100 can be increased, thereby improving the sound of the mid-pitched to low-pitched vocal range generated based on the vibration of the display panel 100. In addition, in a large-sized display device, the entire portion of the display panel 100 having a large size (or large area) can vibrate, and thus, the localization of the sound based on the vibration of the display panel 100 can be further enhanced, thereby achieving a stereo effect.

[0157] Therefore, the vibration generating device 200 according to an embodiment of the present disclosure can be disposed at the rear surface of the display panel 100 to fully vibrate the display panel 100 in the vertical (or horizontal or front-to-back) direction, thereby outputting the desired sound to the front area in front of the display device. In addition, the vibration generating device 200 can be implemented in a pattern shape including an organic material portion and an inorganic material portion. Therefore, the area (or size) of the vibration generating device 200 can be infinitely increased, thereby increasing the panel coverage of the vibration generating device 200 relative to the display panel 100 to enhance the sound characteristics based on the vibration of the display panel 100.

[0158] In addition, the vibration generating device 200 can be implemented with a membrane and thus can be thin, thereby reducing or preventing an increase in the driving voltage. For example, the vibration generating device 200 can be configured to have a wide area corresponding to the same size as the size of the display panel 100, and thus, the sound pressure characteristics of the low-pitched vocal cords, which are the disadvantages of membrane-type piezoelectrics or stacked-type piezoelectrics, can be improved, and the driving voltage can be reduced. In addition, the vibration generating device 200 according to an embodiment of the present disclosure may include an inorganic material portion and an organic material portion, and can be implemented as a thin film type, and therefore, can be integrated into the display device 10 or equipped in the display device 10 without being interfered with by the mechanical elements and / or another element constituting the display device 10.

[0159] The vibration generating device 200 can vibrate based on an electrical signal applied by a flexible cable to vibrate the display panel 100. For example, the vibration generating device 200 can be a sound generating device that vibrates based on a signal synchronized with the image displayed by the display panel 100 to vibrate the display panel 100, thereby generating sound. As another example, the vibration generating device 200 can be a tactile device that vibrates based on a tactile feedback signal (or tactile feedback signal) synchronized with a user's touch applied to a touch panel (or touch sensor layer) provided at or embedded in the display panel 100 to vibrate the display panel 100. For example, the vibration generating device 200 can be a tactile device that vibrates the display panel 100 to output feedback based on the user's action (or movement). Therefore, the display panel 100 can vibrate based on the vibration of the vibration generating device 200 to provide at least one or more of sound and tactile feedback to the user (or viewer).

[0160] Figure 3 A vibration generating device 200 according to an embodiment of the present disclosure is illustrated.

[0161] Reference Figure 3 , combined with Figure 2The vibration generating device 200 according to an embodiment of the present disclosure may include a piezoelectric composite layer PCL, a first electrode 230, and a second electrode 240. The piezoelectric composite layer PCL may include a plurality of first portions 210 and a plurality of second portions 220, each of which is disposed between the plurality of first portions 210.

[0162] The piezoelectric composite layer PCL may be referred to as, for example, a vibration layer, a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a vibration portion, a piezoelectric material portion, an electroactive portion, a piezoelectric structure, a piezoelectric composite, or a piezoelectric ceramic composite, but embodiments of the present disclosure are not limited thereto.

[0163] The piezoelectric composite layer (PCL) may be formed of a transparent piezoelectric material, a semi-transparent (or semi-transparent) piezoelectric material, or an opaque piezoelectric material, and may be transparent, semi-transparent, or opaque.

[0164] Each of the plurality of first portions 210 according to an embodiment of the present disclosure may include an inorganic material or a piezoelectric material, and each vibrates based on a piezoelectric effect (or piezoelectric characteristics) caused by an electric field. For example, each of the plurality of first portions 210 may be referred to as an electrically active portion, an inorganic material portion, a piezoelectric material portion, or a vibrating portion, but embodiments of the present disclosure are not limited thereto.

[0165] Each of the plurality of first portions 210 according to an embodiment of the present disclosure 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 structure having an orientation. 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 anions. For example, the chemical formula "ABO3" may include at least one or more of lead titanate (divalent) (PbTiO3), lead zirconate (PbZrO3), barium titanate (BaTiO3), and strontium titanate (SrTiO3), but the embodiments of the present disclosure are not limited thereto.

[0166] When the perovskite crystal structure includes a central ion (e.g., PbTiO3, for example, lead titanate (divalent), lead titanium oxide, or lead titanate having a perovskite structure), the position of the titanium (Ti) ion can be changed by external stress or a 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 symmetrical structure can be changed to a tetragonal (or quadrilateral), orthorhombic or rhombic structure corresponding to the asymmetric structure. Therefore, a piezoelectric effect can be generated. In the tetragonal structure, orthorhombic structure or rhombic structure corresponding to the asymmetric structure, the polarization may be high in the quasi-isotropic phase boundary, and the rearrangement of the polarization may be easy, whereby the perovskite crystal structure can have high piezoelectric properties.

[0167] As an embodiment of the present disclosure, the inorganic material portion provided in each of the plurality of first portions 210 may include a material containing one or more 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.

[0168] As another example, the inorganic material portion provided in each of the plurality of first portions 210 may include a lead zirconate titanate (PZT)-based material containing lead (Pb), zirconium (Zr), and titanium (Ti), or may include a lead zirconate nickel niobate (PZNN)-based material containing lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but embodiments of the present disclosure are not limited thereto. Furthermore, the inorganic material portion may include at least one of calcium titanate (CaTiO 3 ), BaTiO 3 , and SrTiO 3 , each of which does not contain Pb, but embodiments of the present disclosure are not limited thereto.

[0169] Each of the plurality of first portions 210 may include a polygonal pattern. For example, each of the plurality of first portions 210 may be a line pattern having a predetermined first width d1. For example, each of the plurality of first portions 210 may be spaced apart from each other by a predetermined second width d2 (or a certain interval or distance) in a first direction X, and may be parallel in a second direction Y intersecting the first direction X. Within a process error range (or allowable error or tolerance) occurring during the manufacturing process, each of the plurality of first portions 210 may have the same size, such as the same width, area, or volume.

[0170] Each of the plurality of second parts 220 according to an embodiment of the present disclosure may have a modulus and viscoelasticity lower than that of each first part 210. Therefore, the plurality of second parts 220 can enhance the reliability of each first part 210 that is susceptible to impact due to its fragile characteristics. For example, when the vibration generating device 200 for vibrating the display panel 100 has impact resistance and high rigidity, the vibration generating device 200 may have high or maximum vibration characteristics. In order to make the vibration generating device 200 have impact resistance and high rigidity, the plurality of second parts 220 may each include a material having a relatively high damping factor (tan δ) and a relatively high rigidity. For example, the plurality of second parts 220 may each include a material having a damping factor (tan δ) of about 0.1 to about 1 and a relatively high rigidity of about 0 [GPa] to about 10 [GPa]. In addition, the damping factor (tan δ) and the rigidity characteristics may be described based on the correlation between the loss coefficient and the modulus. For example, the plurality of second portions 220 may each include a material having a loss coefficient (or loss factor) of about 0.01 to about 1.0 and a modulus of about 0.1 [GPa] to about 10 [GPa].

[0171] The organic material portion in each of the plurality of second portions 220 may include an organic material or an organic polymer, each of which has flexibility characteristics compared to the inorganic material portion of each first portion 210. For example, each of the plurality of second portions 220 may include one or more of an organic material, an organic polymer, an organic piezoelectric material, and an organic non-piezoelectric material. For example, each of the plurality of second portions 220 may be referred to as an adhesive portion, an elastic portion, a bending portion, a damping portion, or a flexible portion having flexibility, but embodiments of the present disclosure are not limited thereto.

[0172] The organic material portion according to an embodiment of the present disclosure may include at least one of an organic piezoelectric material and an organic non-piezoelectric material.

[0173] The organic material portion including the organic piezoelectric material can absorb the impact applied to the inorganic material portion (or the first portion 210). Therefore, the organic material portion can enhance the overall durability of the vibration generating device 200 and can provide piezoelectric characteristics corresponding to a certain level or higher. The organic piezoelectric material according to an embodiment of the present disclosure may be an organic material having electroactive characteristics. The organic material portion including the organic non-piezoelectric material may include a curable resin composition and an adhesive including the curable resin composition. Therefore, the organic material portion can absorb the impact applied to the inorganic material portion (or the first portion), thereby enhancing the overall durability of the vibration generating device 200. The organic non-piezoelectric material according to an embodiment of the present disclosure may include at least one or more of an epoxy-based polymer, an acryl-based polymer, and a silicone-based polymer, but the embodiments of the present disclosure are not limited thereto.

[0174] As an embodiment of the present disclosure, for the high stiffness characteristics of the vibration generating device 200, the organic material portion including the organic non-piezoelectric material may include an adhesion promoter or adhesion enhancer for the adhesion between the epoxy resin and the inorganic material portion. For example, the adhesion promoter may be a phosphate or the like, but the embodiments of the present disclosure are not limited thereto. The organic material portion may be cured by at least one of a thermal curing process and a photocuring process. In the process of curing the organic material portion, a solvent-free type epoxy resin may be used to avoid or prevent the thickness uniformity of the vibration generating device 200 from being reduced due to the shrinkage of the organic material portion caused by the volatilization of the solvent.

[0175] In addition, the organic material portion including the organic non-piezoelectric material may further include a reinforcing agent, for example, for damping properties in addition to the high stiffness of the vibration generating device 200. For example, the reinforcing agent may be methyl methacrylate-butadiene-styrene (MBS) having a core-shell type, and its content may be about 5 wt% to about 40 wt%. The reinforcing agent may be an elastomer having a core-shell type and may have a high coupling force to an epoxy resin such as an acryl-based polymer. Therefore, the reinforcing agent may enhance the impact resistance or damping properties of the vibration generating device 200.

[0176] Each of the plurality of second portions 220 may include a polygonal pattern. Each of the plurality of second portions 220 may be disposed between the plurality of first portions 210. The plurality of first portions 210 and the plurality of second portions 220 may be disposed (or arranged) in parallel at the same plane (or the same layer). Each of the plurality of second portions 220 may fill the gap between two adjacent first portions of the plurality of first portions 210 and may be connected to or attached to the first portion 210 adjacent thereto. For example, each of the plurality of second portions 220 may be a line pattern having a predetermined second width d2. Each of the plurality of second portions 220 may be disposed parallel to each other with the first portion 210 therebetween. Within the process error range (or allowable error or tolerance) occurring in the manufacturing process, each of the plurality of second portions 220 may have the same size, such as the same width, area or volume.

[0177] The size of each second portion 220 may be the same as or different from the size of each first portion 210. For example, the size of each first portion 210 and the size of each second portion 220 may be adjusted based on desired conditions including vibration characteristics and / or flexibility of the vibration generating device 200.

[0178] Therefore, in the piezoelectric composite layer PCL, first portions 210 comprising an inorganic material and exhibiting piezoelectric properties and second portions 220 comprising an organic material and exhibiting flexibility can alternately repeat and be connected to each other, thereby enabling the piezoelectric composite layer PCL to have a thin film type. Consequently, the piezoelectric composite layer PCL can bend based on the shape of the display panel 100 and can have dimensions corresponding to the display panel 100, or dimensions to achieve vibration or sound characteristics, each of which can be adjusted based on the vibration of the display panel 100. For example, the dimensions of each first portion 210 and each second portion 220 can be adjusted based on the piezoelectric properties and flexibility. For example, in a display device that prefers piezoelectric properties over flexibility, the dimensions of each first portion 210 can be larger than the dimensions of each second portion 220. As another example, in a display device that prefers flexibility over piezoelectric properties, the dimensions of each second portion 220 can be larger than the dimensions of each first portion 210. Therefore, the piezoelectric composite layer PCL can be configured by adjusting the first and second portions 210, 220 based on the desired characteristics of the display device, thereby facilitating design.

[0179] The first electrode 230 may be disposed on a first surface (or upper surface, hereinafter referred to as the first surface) of the piezoelectric composite layer PCL, and the first surface may be a surface facing the display panel 100. The first electrode 230 may be disposed or coupled to the first surface of each of the plurality of first portions 210 and the first surface of each of the plurality of second portions 220, and may be electrically connected to the first surface of each of the plurality of first portions 210. For example, the first electrode 230 may be a single electrode type disposed across the entire first surface of the piezoelectric composite layer PCL. For example, the first electrode 230 may have substantially the same shape as the piezoelectric composite layer PCL, but embodiments of the present disclosure are not limited thereto. The first electrode 230 according to embodiments of the present disclosure may include a transparent conductive material, a semi-transparent (or translucent) conductive material, or an opaque conductive material. For example, the transparent conductive material or the semi-transparent conductive material may include indium tin oxide (ITO) or indium zinc oxide (IZO), but embodiments of the present disclosure are not limited thereto. For example, the opaque conductive material may include aluminum (Al), copper (Cu), gold (Au), silver (Ag), molybdenum (Mo), magnesium (Mg), and any alloy thereof, but embodiments of the present disclosure are not limited thereto.

[0180] The second electrode 240 may be disposed on the second surface (or rear surface, hereinafter referred to as the second surface) of the piezoelectric composite layer PCL, and the second surface may be the surface facing the rear surface portion 310 of the support member 300. The second electrode 240 may be disposed or coupled to the second surface of each of the plurality of first portions 210 and the second surface of each of the plurality of second portions 220, and may be electrically connected to the second surface of each of the plurality of first portions 210. For example, the second electrode 240 may be a single electrode type disposed across the entire second surface of the piezoelectric composite layer PCL. For example, the second electrode 240 may have substantially the same shape as the piezoelectric composite layer PCL, but embodiments of the present disclosure are not limited thereto. The second electrode 240 according to embodiments of the present disclosure may include a transparent conductive material, a semi-transparent (or translucent) conductive material, or an opaque conductive material. For example, the second electrode 240 may include the same material as the first electrode 230, but embodiments of the present disclosure are not limited thereto.

[0181] The piezoelectric composite layer PCL can be polarized (or polarized) in a certain temperature atmosphere or in a temperature atmosphere that can be changed from high temperature to room temperature by applying a certain voltage to the first and second electrodes 230 and 240, but the embodiments of the present disclosure are not limited thereto. For example, the piezoelectric composite layer PCL can alternately and repeatedly contract and expand to vibrate based on the inverse piezoelectric effect in response to an external sound signal (or voice signal) applied to the first and second electrodes 230 and 240. For example, the piezoelectric composite layer PCL can be vibrated by the first and second electrodes 230 and 240 vibrating in the vertical direction (or thickness direction Z) d33 and in the horizontal direction (or planar direction) d31. The horizontal contraction and expansion of the piezoelectric composite layer PCL can increase the displacement of the display panel 100, thereby further improving the vibration of the display panel 100.

[0182] The vibration generating device 200 according to an embodiment of the present disclosure may further include a first protective layer 250 and a second protective layer 260 .

[0183] The first protective layer 250 may be disposed on the first electrode 230 and may protect the first electrode 230 or the first surface of the piezoelectric composite layer PCL. For example, the first protective layer 250 may be a polyimide (PI) film or a polyethylene terephthalate (PET) film, but the embodiments of the present disclosure are not limited thereto.

[0184] The second protective layer 260 may be disposed on the second electrode 240 and may protect the second electrode 240 or the second surface of the piezoelectric composite layer PCL. For example, the second protective layer 260 may be a polyimide (PI) film or a polyethylene terephthalate (PET) film, but the embodiments of the present disclosure are not limited thereto.

[0185] Figure 4 is a cross-sectional view illustrating another embodiment of the vibration generating device according to the embodiment of the present disclosure.

[0186] Figure 4 The vibration generating device 200 shown can be replaced by Figure 3 The vibration generating device 200 shown in FIG. 1 is applied and may be provided on the rear surface of the display panel 100 via the adhesive member 150. Figure 4 The vibration generating device 200 is described, and the Figure 3 The same or similar descriptions will be given of the vibration generating device 200, or only desired parts will be described.

[0187] Reference Figure 4 , the vibration generating device 200 may include at least two or more vibration generating devices having different frequency characteristics. In an embodiment according to the present disclosure, an example in which the vibration generating device includes three vibration generating devices (e.g., first to third vibration generating devices 200-1 to 200-3) will be described, but the embodiment of the present disclosure is not limited thereto.

[0188] The vibration generating device 200 may be implemented in the form of a single membrane type (or a single membrane type) and may include a piezoelectric composite layer PCL configured in a plurality of regions having different frequency characteristics, a first electrode 230 provided on a first surface of the piezoelectric composite layer PCL, and a second electrode 240 provided on a second surface of the piezoelectric composite layer PCL. In an embodiment of the present disclosure, the piezoelectric composite layer PCL may include three piezoelectric composite layers PCL1 to PCL3, but the embodiments of the present disclosure are not limited thereto.

[0189] According to an embodiment of the present disclosure, the vibration generating device 200 may further include a first protective layer 250 and a second protective layer 260. The first protective layer 250 may be disposed on the first electrode 230. The first protective layer 250 may protect the first surface of the first electrode 230 or the piezoelectric composite layer PCL. The second protective layer 260 may be disposed on the second electrode 240. The second protective layer 260 may protect the second surface of the second electrode 240 or the piezoelectric composite layer PCL.

[0190] According to an embodiment of the present disclosure, the first vibration generating device 200-1 may include a first piezoelectric composite layer PCL1, a first electrode 231 disposed on a first surface of the first piezoelectric composite layer PCL1, and a second electrode 241 disposed on a second surface of the first piezoelectric composite layer PCL1. The second vibration generating device 200-2 may include a second piezoelectric composite layer PCL2, a first electrode 232 disposed on a first surface of the second piezoelectric composite layer PCL2, and a second electrode 242 disposed on a second surface of the second piezoelectric composite layer PCL2. The third vibration generating device 200-3 may include a third piezoelectric composite layer PCL3, a first electrode 233 disposed on a first surface of the third piezoelectric composite layer PCL3, and a second electrode 243 disposed on a second surface of the third piezoelectric composite layer PCL3.

[0191] exist Figure 4 In the embodiment, the first electrodes 231 to 233 of the first to third vibration generating devices 200-1 to 200-3 are connected to each other to configure a common first electrode 230, but the embodiments of the present disclosure are not limited thereto. For example, the first electrodes 231 to 233 of each of the first to third vibration generating devices 200-1 to 200-3 may be configured independently and separately. In addition, Figure 4 , the second electrodes 241 to 243 of the first to third vibration generating devices 200-1 to 200-3 are connected to each other to configure a common second electrode 240, but the embodiments of the present disclosure are not limited thereto. For example, the second electrodes 241 to 243 of each of the first to third vibration generating devices 200-1 to 200-3 may be configured independently and separately.

[0192] Each of the first to third piezoelectric composite layers PCL1 to PCL3 of the first to third vibration generating devices 200 - 1 to 200 - 3 may be configured as described above with reference to FIG. Figure 3 For example, each of the first to third piezoelectric composite layers PCL1 to PCL3 may include a plurality of first portions 210 and a plurality of second portions 220, each second portion 220 being disposed between two adjacent first portions 210 among the plurality of first portions 210, and thus repeated description thereof may be omitted.

[0193] The first to third vibration generating devices 200-1 to 200-3 can be configured to have different frequency characteristics. The first vibration generating device 200-1 can have one or more of the frequency characteristics of the high-pitched vocal cords, the frequency characteristics of the medium-pitched vocal cords, and the frequency characteristics of the low-pitched vocal cords (for example, the frequency characteristics of the high-pitched vocal cords, the frequency characteristics of the medium-high-pitched vocal cords, or the frequency characteristics of the high-medium-low-pitched vocal cords). The second vibration generating device 200-2 can have one or more of the frequency characteristics of the high-pitched vocal cords, the frequency characteristics of the medium-pitched vocal cords, and the frequency characteristics of the low-pitched vocal cords that are different from the frequency characteristics of the first vibration generating device 200-1 (for example, the frequency characteristics of the medium-pitched vocal cords, the frequency characteristics of the medium-high-pitched vocal cords, or the frequency characteristics of the high-medium-low-pitched vocal cords). The third vibration generating device 200-3 may have one or more of the frequency characteristics of the high-pitched vocal cords, the frequency characteristics of the medium-pitched vocal cords, and the frequency characteristics of the low-pitched vocal cords that are different from the frequency characteristics of the first vibration generating device 200-1 or the frequency characteristics of the second vibration generating device 200-2 (for example, the frequency characteristics of the low-pitched vocal cords, the frequency characteristics of the medium-low-pitched vocal cords, or the frequency characteristics of the high-medium-low-pitched vocal cords). However, the embodiments of the present disclosure are not limited to this. The frequency of the high-pitched vocal cords may be approximately 10kHz to approximately 20kHz, the frequency of the medium-pitched vocal cords may be approximately 200Hz to approximately 10kHz, and the frequency of the low-pitched vocal cords may be approximately 200Hz or less, but the embodiments of the present disclosure are not limited to this. For example, the first vibration generating device 200-1 may be a tweeter or a receiver, the second vibration generating device 200-2 may be a speaker or a sound generating device, and the third vibration generating device 200-3 may be a tactile member or a tactile device, but the embodiments of the present disclosure are not limited to this. As another example, the first vibration generating device 200-1 may be a tweeter or a receiver, the second vibration generating device 200-2 may be a haptic or a haptic device, and the third vibration generating device 200-3 may be a speaker or a sound generating device, but the embodiments of the present disclosure are not limited thereto. The configuration of the vibration generating device is not limited thereto.

[0194] According to an embodiment of the present disclosure, at least one or more of the first to third vibration generating devices 200-1 to 200-3 may be an image sensor. In a vibration generating device driven as an image sensor, the Young's modulus (or elastic modulus) of the second portion of the piezoelectric composite layer for the sensor may be lower than the second portion of another vibration generating device, so that the signal oscillated by the piezoelectric composite layer for the sensor and the signal received by the piezoelectric composite layer for the sensor are quickly attenuated without overlapping. The second portion of the piezoelectric composite layer for the sensor may include a material with a high vibration attenuation effect (or damping characteristics). For example, the second portion may have a Young's modulus of approximately 0.1 GPa to approximately 2.5 GPa. For example, the second portion of the piezoelectric composite layer for the sensor may include a polyurethane-based polymer, an acryl-based polymer, or a polyvinylidene fluoride (PVDF)-based polymer, but embodiments of the present disclosure are not limited thereto.

[0195] To implement first to third vibration generating devices 200-1 to 200-3 having different frequency characteristics by configuring one piezoelectric composite layer PCL of the vibration generating device 200, the second portions 220 of the first to third piezoelectric composite layers PCL1 to PCL3 may include materials having different expansion coefficients.

[0196] The expansion coefficient may be the ratio of the compression deformation rate to the tension deformation rate, and as the expansion coefficient increases, the frequency of the high-pitched vocal cords may be output. For example, the expansion coefficient may be the ratio of the compression deformation rate in the width direction (or transverse direction) to the tension deformation rate in the length direction (or longitudinal direction). For example, the second portion 220 may be configured as an auxetic layer (or auxetic structure). The second portion 220 may include a material with a negative or zero expansion coefficient and may achieve strong vibration or sound, and may, for example, have an expansion coefficient of approximately -0.3 to approximately 0.

[0197] In order to realize the first to third vibration generating devices 200-1 to 200-3 having different frequency characteristics by configuring one piezoelectric composite layer PCL of the vibration generating device 200, the width of the first portion 210 and / or the second portion 220 of each of the first to third piezoelectric composite layers PCL1 to PCL3 may be configured differently. For example, the width of the first portion 210 of the first piezoelectric composite layer PCL1, the width of the first portion 210 of the second piezoelectric composite layer PCL2, and the width of the first portion 210 of the third piezoelectric composite layer PCL3 may be different from each other. For example, the width of the second portion 220 of the first piezoelectric composite layer PCL1, the width of the second portion 220 of the second piezoelectric composite layer PCL2, and the width of the second portion 220 of the third piezoelectric composite layer PCL3 may be different from each other.

[0198] Therefore, the vibration generating device 200 can implement the first to third vibration generating devices 200-1 to 200-3 having different frequency characteristics by the piezoelectric composite layer PCL formed of one layer, thereby not increasing the thickness of the display device 10 and enhancing its sound characteristics or vibration characteristics.

[0199] Figure 5 The vibration generating device according to another embodiment of the present disclosure is illustrated, and the above referenced embodiment is modified. Figure 3 Therefore, hereinafter, repeated descriptions of elements other than the piezoelectric composite layer and elements related thereto may be omitted or will be briefly given.

[0200] Reference Figure 5 ,exist Figure 5 In the illustrated vibration generating device 200 , the piezoelectric composite layer PCL may include a plurality of first portions 210 spaced apart from each other along a first direction X and a second direction Y, and a second portion 220 disposed between the plurality of first portions 210 .

[0201] The plurality of first portions 210 may be arranged to be spaced apart from each other along the first direction X and the second direction Y. For example, each of the plurality of first portions 210 may have a hexahedral shape of the same size and may be arranged in a lattice shape. Each of the plurality of first portions 210 may be formed similar to the above reference Figure 3 The first portion 210 is described as being made of substantially the same piezoelectric material, and thus, like reference numerals refer to like elements, and their repeated description may be omitted.

[0202] The second portion 220 may be disposed between the plurality of first portions 210 along each of the first direction X and the second direction Y. The second portion 220 may be configured to fill a gap or space between two adjacent first portions 210, or surround each of the plurality of first portions 210, and thus may be connected to or attached to the adjacent first portions 210. According to an embodiment of the present disclosure, the width of the second portion 220 disposed between two first portions 210 adjacent to each other along the first direction X may be the same as or different from the width of the first portion 210, and the width of the second portion 220 disposed between two first portions 210 adjacent to each other along the second direction Y may be the same as or different from the width of the first portion 210. The second portion 220 may be formed similarly to the above referenced embodiment. Figure 3 The second portion 220 is described as being made of substantially the same organic material, and thus, like reference numerals refer to like elements, and their repeated description may be omitted.

[0203] Therefore, the piezoelectric composite layer PCL of the vibration generating device 200 according to an embodiment of the present disclosure may include 1-3 composites and thus may have a resonant frequency of 30 MHz or less, but the embodiments of the present disclosure are not limited thereto. For example, the resonant frequency of the piezoelectric composite layer PCL may vary based on one or more of its shape, length, and thickness.

[0204] Figure 6 A vibration generating device according to another embodiment of the present disclosure is illustrated, and Figure 3 Therefore, hereinafter, repeated descriptions of elements other than the piezoelectric composite layer and elements related thereto may be omitted or will be briefly given.

[0205] Reference Figure 6 ,exist Figure 6 In the illustrated vibration generating device 200 , the piezoelectric composite layer PCL may include a plurality of first portions 210 spaced apart from each other along a first direction X and a second direction Y, and a second portion 220 disposed between the plurality of first portions 210 .

[0206] Each of the plurality of first portions 210 according to an embodiment of the present disclosure may have a circular planar structure. For example, each of the plurality of first portions 210 may have a circular plate shape, but the embodiments of the present disclosure are not limited thereto. For example, each of the plurality of first portions 210 may have a dot shape including an ellipse, a polygon, or a ring.

[0207] The second portion 220 may be disposed between the plurality of first portions 210 along each of the first direction X and the second direction Y. The second portion 220 may be configured to surround each of the plurality of first portions 210 and thus may be connected to or attached to a side surface of each of the plurality of first portions 210. Each of the plurality of first portions 210 and the second portion 220 may be disposed (or arranged) in parallel on the same plane (or the same layer).

[0208] In the piezoelectric composite layer PCL of the vibration generating device 200 according to another embodiment of the present disclosure, each of the plurality of first portions 210 may have a triangular flat structure instead of a circular planar structure. For example, each of the plurality of first portions 210 may have a triangular plate shape.

[0209] According to an embodiment of the present disclosure, four adjacent first portions 210 among the plurality of first portions 210 may be adjacent to each other to form a quadrilateral or quadrilateral shape (or square shape). The vertices of the four adjacent first portions 210 forming the quadrilateral may be adjacent to each other in the central portion (or center portion) of the quadrilateral.

[0210] According to another embodiment of the present disclosure, six adjacent first portions 210 among the plurality of first portions 210 may be adjacent to each other to form a hexagonal shape (or a regular hexagonal shape). The vertices of the six adjacent first portions 210 forming the hexagonal shape may be adjacent to each other in the central portion (or center portion) of the hexagonal shape.

[0211] Figure 7 In a display device according to an embodiment of the present disclosure, Figure 1 Another cross-sectional view taken along line II' is shown, and illustrates a modified Figure 2 Therefore, hereinafter, repeated descriptions of elements other than the vibration generating device and elements related thereto will be omitted or will be briefly given.

[0212] exist Figure 7 In the display device 20, the rear surface of the display panel 100 may be divided into a first area A1 and a second area A2. Figure 7 , the rear surface of the display panel 100 is illustrated as being divided into two areas A1 and A2, but embodiments of the present disclosure are not limited thereto. For example, the rear surface of the display panel 100 may be divided into three or more areas. For example, with respect to the first direction X, the first area A1 and the second area A2 may be laterally symmetrical with respect to the center line CL of the display panel 100, but embodiments of the present disclosure are not limited thereto. For example, each of the first area A1 and the second area A2 may overlap with the display area AA of the display panel 100. As another embodiment of the present disclosure, when the rear surface of the display panel 100 may be divided into three or more areas, each area may overlap with the display area AA.

[0213] The vibration generating device 200 according to an embodiment of the present disclosure may include at least one or more first vibration generating devices 201 and at least one or more second vibration generating devices 202. The first vibration generating device 201 may be provided in the first area A1 of the display panel 100, and the second vibration generating device 202 may be provided in the second area A2 of the display panel 100. In addition, the first hole 301 provided at the support member 300 may be provided to correspond to the first vibration generating device 201 and the second vibration generating device 202.

[0214] For example, the first hole 301 may be provided to correspond to the entire area of ​​the first vibration generating device 201 and the second vibration generating device 202. According to an embodiment of the present disclosure, the first hole 301 may be provided along a portion of the first vibration generating device 201 (e.g., the periphery of the first vibration generating device 201) and a portion of the second vibration generating device 202 (e.g., the periphery of the second vibration generating device 202). According to an embodiment of the present disclosure, when the display panel 100 is divided into three or more areas, at least one or more vibration generating devices may be provided at each of the three or more divided areas, and the first hole 301 may be provided to correspond to the vibration generating device provided at each of the three or more divided areas.

[0215] For example, the first vibration generating device 201 may be disposed near a central portion or a periphery of the first area A1 of the display panel 100 relative to the first direction X or the second direction Y. The second vibration generating device 202 may be disposed near a central portion or a periphery of the second area A2 of the display panel 100 relative to the first direction X or the second direction Y.

[0216] The first vibration generating device 201 may directly vibrate the first area A1 of the display panel 100, and thus may generate a first sound (or a first panel vibration sound) or a first tactile feedback in the first area A1 of the display panel 100. The second vibration generating device 202 may directly vibrate the second area A2 of the display panel 100, and thus may generate a second sound (or a second panel vibration sound) or a second tactile feedback in the second area A2 of the display panel 100.

[0217] For example, the first sound may be a left sound, and the second sound may be a right sound. The size of each of the first vibration generating device 201 and the second vibration generating device 202 according to an embodiment of the present disclosure may have various sizes based on the sound characteristics required by the display device, and for example, may have a size that is less than or equal to half of the size of each of the first area A1 and the second area A2, or may have a size that is greater than or equal to half of the size of each of the first area A1 and the second area A2. According to an embodiment of the present disclosure, the first vibration generating device 201 and the second vibration generating device 202 may have the same size or different sizes based on the left and right sound characteristics of the display device and the sound characteristics or stereo characteristics of the display device, and may be arranged in a left-right symmetrical or left-right asymmetrical structure relative to the center line CL of the display panel 100.

[0218] Each of the first vibration generating device 201 and the second vibration generating device 202 may be connected or attached at the rear surface of the display panel 100 by an adhesive member 150. The adhesive member 150 according to an embodiment of the present disclosure may be interposed between the rear surface of the display panel 100 and each of the first vibration generating device 201 and the second vibration generating device 202.

[0219] As described above, the display apparatus 20 according to another embodiment of the present disclosure may output left and right sounds in the front direction of the display panel 100 through the first and second vibration generating devices 201 and 202 , thereby providing sound or stereo sound to the user.

[0220] Figure 8 A vibration generating device according to an embodiment of the present disclosure is illustrated. Figure 9 It is along Figure 8 The cross-sectional view is taken along line II-II'.

[0221] Reference Figure 8 and Figure 9 , the vibration generating device 200 according to an embodiment of the present disclosure may include at least one or more vibration generating devices 200A to 200D or a plurality of vibration generating devices 200A to 200D.

[0222] Each of the plurality of vibration generating devices 200A to 200D may be disposed while being spaced apart from each other along each of a first direction X and a second direction Y intersecting the first direction X and electrically separated.

[0223] Each of the plurality of vibration generating devices 200A to 200D can contract and expand alternately and / or repeatedly to vibrate based on the piezoelectric effect. For example, each of the plurality of vibration generating devices 200A to 200D can be arranged or tiled at a certain interval (or distance) along each of the first direction X and the second direction Y. For example, the vibration generating device 200 in which the plurality of vibration generating devices 200A to 200D are arranged or tiled can be referred to as a vibration array, a vibration array portion, a vibration device array portion, a vibration array structure, a tiled vibration array, a tiled vibration array device, a tiled vibration array module, or a tiled vibration membrane, but embodiments of the present disclosure are not limited thereto.

[0224] Each of the plurality of vibration generating devices 200A to 200D according to an embodiment of the present disclosure may have a square shape. For example, each of the plurality of vibration generating devices 200A to 200D may have a square shape with a width of approximately 5 cm or more. For example, each of the plurality of vibration generating devices 200A to 200D may have a square shape with a size of 5 cm×5 cm or more, but the embodiments of the present disclosure are not limited thereto.

[0225] Each of the plurality of vibration generating devices 200A to 200D can be arranged or tiled on the same plane in an i×j arrangement. Thus, the vibration generating device 200 can have an expanded area based on the tiling of the plurality of relatively small vibration generating devices 200A to 200D. For example, i can be the number of vibration generating devices arranged along the first direction X or a natural number of 2 or greater, and j can be the number of vibration generating devices arranged along the second direction Y or a natural number of 1 or greater that is the same as or different from i.

[0226] Multiple vibration generating devices 210A to 210D can be arranged or tiled at a certain interval (or distance), and thus can be implemented as a vibration device (or single vibration device) that is driven as a complete unit rather than being driven independently. According to an embodiment of the present disclosure, relative to the first direction X, the first separation distance (or first distance or first interval) D1 between the multiple vibration generating devices 210A to 210D can be 0.1 mm or greater and less than 3 cm, but the embodiments of the present disclosure are not limited thereto. In addition, relative to the second direction Y, the second separation distance (or second distance or second interval) D2 between the multiple vibration generating devices 210A to 210D can be 0.1 mm or greater and less than 3 cm, but the embodiments of the present disclosure are not limited thereto. For example, the first spacing distance D1 can be the same as the second spacing distance D2. For example, within the process error range, the first spacing D1 can be the same as the second spacing D2.

[0227] According to an embodiment of the present disclosure, each of the multiple vibration generating devices 210A to 210D can be arranged or tiled to have a separation distance (or interval) D1 and D2 of 0.1 mm or greater and less than 3 cm, and can therefore be driven as a vibration device. This increases the sound pressure level characteristics of the sound generated by the single vibration of the multiple vibration generating devices 210A to 210D and the reproduction frequency band of the sound. For example, the multiple vibration generating devices 210A to 210D can be arranged at intervals of 0.1 mm or greater and less than 5 mm to increase the reproduction frequency band of the sound generated by the single vibration of the multiple vibration generating devices 210A to 210D, and increase the sound of the low-pitched vocal range, for example, the sound pressure level characteristics of 500 Hz or less.

[0228] According to an embodiment of the present disclosure, when a plurality of vibration generating devices 210A to 210D are arranged with intervals D1 and D2 less than 0.1 mm or there are no intervals D1 and D2, the reliability of the vibration generating devices 210A to 210D or the vibration generating device 210 may be reduced due to damage or cracks caused by physical contact between them that occurs when each of the vibration generating devices 210A to 210D vibrates.

[0229] According to an embodiment of the present disclosure, when multiple vibration generating devices 210A to 210D are arranged at intervals D1 and D2 of 3 cm or more, due to the independent vibration of each of the multiple vibration generating devices 210A to 210D, the multiple vibration generating devices 210A to 210D may not be driven as a vibration device. Therefore, the sound pressure level characteristics and the reproduction frequency band of the sound generated by the vibration of the multiple vibration generating devices 210A to 210D may be reduced. For example, when the multiple vibration generating devices 210A to 210D are arranged at intervals D1 and D2 of 3 cm or more, the sound characteristics and sound pressure level characteristics of low-pitched vocal bands, such as 500 Hz or less, may be reduced.

[0230] According to an embodiment of the present disclosure, when a plurality of vibration generating devices 210A to 210D are arranged at intervals of 5 mm, each of the plurality of vibration generating devices 210A to 210D may not be perfectly driven as one vibration device, and therefore, the sound characteristics and sound pressure level characteristics of low-pitched vocal bands, for example, of 200 Hz or less, may be reduced.

[0231] According to another embodiment of the present disclosure, when multiple vibration generating devices 210A to 210D are arranged at intervals of 1 mm, each of the multiple vibration generating devices 210A to 210D can be driven as a vibration device, and thus, the sound reproduction frequency band can be increased, and the sound of the low-pitched vocal range (for example, the sound pressure level characteristics of 500 Hz or less) can be increased. For example, when multiple vibration generating devices 210A to 210D are arranged at intervals of 1 mm, the vibration generating device 200 can be implemented as a large-area vibrator that is expanded based on the optimization of the spacing distance between the multiple vibration generating devices 210A to 210D. Therefore, the vibration generating device 200 can be driven as a large-area vibrator based on the single vibration of the multiple vibration generating devices 210A to 210D, and thus the sound characteristics and sound pressure level characteristics can be increased in the low-pitched vocal range and the reproduction frequency band of the sound generated based on the large-area vibration of the vibration generating device 200, respectively.

[0232] Therefore, in order to achieve single-unit vibration of the multiple vibration generating devices 210A to 210D (or one vibration device), the spacing distance between the multiple vibration generating devices 210A to 210D can be adjusted to be greater than 0.1 mm and less than 3 cm. In addition, in order to achieve single-unit vibration of the multiple vibration generating devices 210A to 210D (or one vibration device) and increase the sound pressure level characteristics of the low-pitched vocal range, the spacing distance between the multiple vibration generating devices 210A to 210D can be adjusted to be greater than 0.1 mm and less than 5 mm.

[0233] The vibration generating device 200 according to an embodiment of the present disclosure may include first to fourth vibration generating devices 210A to 210D, which are electrically disconnected (or separated) from each other and / or structurally separated from each other and are disposed separately from each other along each of a first direction X and a second direction Y. For example, the first to fourth vibration generating devices 210A to 210D may be arranged or tiled in a 2×2 form.

[0234] According to an embodiment of the present disclosure, the first vibration generating device 210A and the second vibration generating device 210B may be spaced apart from each other along the first direction X. The third vibration generating device 210C and the fourth vibration generating device 210D may be spaced apart from each other along the first direction X, and may be spaced apart from each of the first vibration generating device 210A and the second vibration generating device 210B along the second direction Y. The first vibration generating device 210A and the third vibration generating device 210C may be spaced apart from each other along the second direction Y so as to face each other. The second vibration generating device 210B and the fourth vibration generating device 210D may be spaced apart from each other along the second direction Y so as to face each other.

[0235] According to an embodiment of the present disclosure, the first to fourth vibration generating devices 210A to 210D can be arranged (or tiled) at intervals D1 and D2 of 0.1 mm or greater and less than 3 cm along each of the first direction X and the second direction Y, or can be arranged (or tiled) at intervals of 0.1 mm or greater and less than 5 mm, so that the first to fourth vibration generating devices 210A to 210D are driven as a large-area vibrator of the vibration generating device 200, or as one vibration device or a single vibration device.

[0236] Each of the first to fourth vibration generating devices 210A to 210D according to an embodiment of the present disclosure may include a piezoelectric composite PCL, a first electrode 230 , and a second electrode 240 .

[0237] The piezoelectric composite PCL may include a ceramic-based material capable of achieving relatively high vibration. For example, the piezoelectric composite PCL may include a 1-3 composite material having piezoelectric properties of a 1-3 vibration mode or a 2-2 composite material having piezoelectric properties of a 2-2 vibration mode. For example, the piezoelectric composite PCL may be formed in the same manner as described above. Figures 3 to 6 The piezoelectric composite PCL described in the same manner includes the first portion 210 and the second portion 220 , and thus, like reference numerals refer to like elements and their repeated description may be omitted.

[0238] The first electrode 230 may be provided at the first surface of the piezoelectric composite PCL and may be electrically connected to the first surface of the piezoelectric composite PCL. Figures 3 to 6 The described first electrodes 230 are the same, and thus, like reference numerals refer to like elements, and their repeated descriptions may be omitted.

[0239] The second electrode 240 may be provided at the second surface of the piezoelectric composite PCL and may be electrically connected to the second surface of the piezoelectric composite PCL. Figures 3 to 6 The described second electrodes 240 are the same, and thus, like reference numerals refer to like elements, and their repeated descriptions may be omitted.

[0240] According to an embodiment of the present disclosure, the piezoelectric composite PCL may be formed of a transparent piezoelectric material, a semi-transparent (or semi-permeable) piezoelectric material, or an opaque piezoelectric material, and may be transparent, semi-transparent, or opaque. Therefore, the vibration generating device 200 according to an embodiment of the present disclosure may include a piezoelectric composite PCL having transparency, semi-transparency, or opacity depending on the transparency of an attached or coupled object (or vibrating object).

[0241] The vibration generating device 200 according to an embodiment of the present disclosure may further include a first protective layer 250 and a second protective layer 260 .

[0242] The first protective layer 250 may be provided on the first surface of the vibration generating devices 200A to 200D. For example, the first protective layer 250 may cover the first electrode 230 provided on the first surface of each of the plurality of vibration generating devices 200A to 200D, and thus may be commonly connected to the first surface of each of the plurality of vibration generating devices 210A to 210D, or may jointly support the first surface of each of the plurality of vibration generating devices 210A to 210D. Thus, the first protective layer 250 may protect the first electrode 230 or the first surface of each of the plurality of vibration generating devices 210A to 210D.

[0243] The first protective layer 250 according to an embodiment of the present disclosure may be provided at the first surface of each of the plurality of vibration generating devices 210A to 210D through the first adhesive layer 270. For example, the first protective layer 250 may be directly provided at the first surface of each of the plurality of vibration generating devices 210A to 210D through a film lamination process using the first adhesive layer 270. Therefore, each of the plurality of vibration generating devices 210A to 210D may be integrated (or provided) with the first protective layer 250 or tiled to have certain intervals D1 and D2.

[0244] The second protective layer 260 may be provided on the second surface of the vibration generating devices 200A to 200D. For example, the second protective layer 260 may cover the second electrode 240 provided on the second surface of each of the plurality of vibration generating devices 200A to 200D, and thus may be commonly connected to the second surface of each of the plurality of vibration generating devices 210A to 210D, or may jointly support the second surface of each of the plurality of vibration generating devices 210A to 210D. Thus, the second protective layer 260 may protect the second electrode 240 or the second surface of each of the plurality of vibration generating devices 210A to 210D.

[0245] The second protective layer 260 according to an embodiment of the present disclosure may be provided on the second surface of each of the plurality of vibration generating devices 210A to 210D through the second adhesive layer 280. For example, the second protective layer 260 may be directly provided on the second surface of each of the plurality of vibration generating devices 210A to 210D through a film lamination process using the second adhesive layer 280. Therefore, each of the plurality of vibration generating devices 210A to 210D may be integrated (or provided) with the second protective layer 260 or tiled to have certain intervals D1 and D2.

[0246] Each of the first protective layer 250 and the second protective layer 260 according to an embodiment of the present disclosure may include a plastic material, a fiber material, or a wood material. At least one of the first protective layer 250 and the second protective layer 260 may be attached or coupled to an object (or a vibrating object) of various materials (plastic, glass, wood, metal, etc.) by an adhesive member.

[0247] The first adhesive layer 270 may be provided on the first surface of each of the plurality of vibration generating devices 210A to 210D and between the plurality of vibration generating devices 210A to 210D. For example, the first adhesive layer 270 may be formed on the rear surface (or inner surface) of the first protective layer 250 facing the first surface of the vibration generating device 200, provided on the first surface of each of the plurality of vibration generating devices 210A to 210D, and filled between the plurality of vibration generating devices 210A to 210D.

[0248] The second adhesive layer 278 may be provided on the second surface of each of the plurality of vibration generating devices 210A to 210D and between the plurality of vibration generating devices 210A to 210D. For example, the second adhesive layer 280 may be formed on the front surface (or inner surface) of the second protective layer 260 facing the second surface of the vibration generating device 200, provided on the second surface of each of the plurality of vibration generating devices 210A to 210D, and filled between the plurality of vibration generating devices 210A to 210D.

[0249] The first adhesive layer 270 and the second adhesive layer 280 can be coupled or connected to each other between the plurality of vibration generating devices 210A to 210D. Therefore, each of the plurality of vibration generating devices 210A to 210D can be surrounded by the first adhesive layer 270 and the second adhesive layer 280. For example, the first adhesive layer 270 and the second adhesive layer 280 can completely surround the entire plurality of vibration generating devices 210A to 210D. For example, the plurality of vibration generating devices 210A to 210D can be embedded between the first adhesive layer 270 and the second adhesive layer 280. For example, the first adhesive layer 270 and the second adhesive layer 280 can be referred to as a covering member, but embodiments of the present disclosure are not limited thereto. When each of the first adhesive layer 270 and the second adhesive layer 280 is a covering member, the first protective layer 250 can be provided at the first surface of the covering member, and the second protective layer 260 can be provided at the second surface of the covering member.

[0250] Each of the first adhesive layer 270 and the second adhesive layer 280 according to an embodiment of the present disclosure may include an electrically insulating material having adhesive properties and capable of compression and decompression. For example, each of the first adhesive layer 270 and the second adhesive layer 280 may include an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane resin, but the embodiments of the present disclosure are not limited thereto. For example, depending on the location where the vibration generating device 200 is set, each of the first adhesive layer 270 and the second adhesive layer 280 may be configured to be transparent, translucent, or opaque.

[0251] The vibration generating device 200 according to an embodiment of the present disclosure may further include a first power line PL1 disposed at the first protective layer 250 , a second power line PL2 disposed at the second protective layer 260 , and a pad portion 290 electrically connected to the first and second power lines PL1 and PL2 .

[0252] The first power line PL1 may be provided at a rear surface of the first protective layer 250 that faces the first surface of the vibration generating device 200. The first power line PL1 may be electrically connected to the first electrode 230 of each of the plurality of vibration generating devices 210A to 210D. For example, the first power line PL1 may be directly connected and electrically connected to the first electrode 230 of each of the plurality of vibration generating devices 210A to 210D. For example, the first power line PL1 may be electrically connected to the first electrode 230 of each of the plurality of vibration generating devices 210A to 210D through an anisotropic conductive film. As another example of the present disclosure, the first power line PL1 may be electrically connected to the first electrode 230 of each of the plurality of vibration generating devices 210A to 210D through a conductive material (or particles) included in the first adhesive layer 270.

[0253] The first power line PL1 according to an embodiment of the present disclosure may include a first upper power line PL11 and a second upper power line PL12 arranged along the second direction Y. For example, the first upper power line PL11 may be electrically connected to the first electrode 230 of each of the first vibration generating device 210A and the third vibration generating device 210C (or the first vibration generating group or the first group) arranged in the first column parallel to the second direction Y among the plurality of vibration generating devices 210A to 210D. The second upper power line PL12 may be electrically connected to the first electrode 230 of each of the second vibration generating device 210B and the fourth vibration generating device 210D (or the second vibration generating group or the second group) arranged in the second column parallel to the second direction Y among the plurality of vibration generating devices 210A to 210D.

[0254] The second power line PL2 may be provided at a front surface of the second protective layer 260 facing the second surface of the vibration generating device 200. The second power line PL2 may be electrically connected to the second electrode 240 of each of the plurality of vibration generating devices 210A to 210D. For example, the second power line PL2 may be directly connected and electrically connected to the second electrode 240 of each of the plurality of vibration generating devices 210A to 210D. For example, the second power line PL2 may be electrically connected to the second electrode 240 of each of the plurality of vibration generating devices 210A to 210D through an anisotropic conductive film. As another example, the second power line PL2 may be electrically connected to the second electrode 240 of each of the plurality of vibration generating devices 210A to 210D through a conductive material (or particles) included in the second adhesive layer 280.

[0255] 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 arranged along the second direction Y. For example, the first lower power line PL21 may be electrically connected to the second electrode 240 of each of the first vibration generating device 210A and the third vibration generating device 210C (or the first vibration generating group or the first group) arranged in the first column parallel to the second direction Y among the plurality of vibration generating devices 210A to 210D. The second lower power line PL22 may be electrically connected to the second electrode 240 of each of the second vibration generating device 210B and the fourth vibration generating device 210D (or the second vibration generating group or the second group) arranged in the second column parallel to the second direction Y among the plurality of vibration generating devices 210A to 210D.

[0256] The pad portion 290 may be provided at the vibration generating device 200 so as to be electrically connected to a portion (or one end or one side) of each of the first power line PL1 and the second power line PL2. The pad portion 290 according to an embodiment of the present disclosure may include a first pad electrode electrically connected to a portion of the first power line PL1 and a second pad electrode electrically connected to a portion of the second power line PL2.

[0257] The first pad electrode may be connected to a portion of each of the first upper power line PL11 and the second upper power line PL12 of the first power line PL1. For example, a portion of each of the first upper power line PL11 and the second upper power line PL12 may branch from the first pad electrode.

[0258] The second pad electrode may be connected to a portion of each of the first and second lower power lines PL21 and PL22 of the second power line PL2. For example, a portion of each of the first and second lower power lines PL21 and PL22 may branch from the second pad electrode.

[0259] According to an embodiment of the present disclosure, each of the first power line PL1, the second power line PL2, and the pad portion 290 may be configured as a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material so as to be transparent, semi-transparent, or opaque.

[0260] The vibration generating device 200 according to an embodiment of the present disclosure may further include a flexible cable 295 .

[0261] The flexible cable 295 may be electrically connected to the pad portion 290 provided at the vibration generating device 200, and may provide the vibration driving signal (or sound signal) provided from the sound processing circuit to the vibration generating device 200. The flexible cable 295 according to an embodiment of the present disclosure may include a first terminal electrically connected to a first pad electrode of the pad portion 290 and a second terminal electrically connected to a second pad electrode of the pad portion 290. For example, the flexible cable 295 may be a flexible printed circuit cable or a flexible flat cable, but embodiments of the present disclosure are not limited thereto.

[0262] The sound processing circuit can generate an alternating current (AC) vibration drive signal including a first vibration drive signal and a second vibration drive signal based on a sound source. The first vibration drive signal can be one of a positive (+) vibration drive signal and a negative (-) vibration drive signal, and the second vibration drive signal can be one of a positive (+) vibration drive signal and a negative (-) vibration drive signal. For example, the first vibration drive signal can be provided to the first electrode 230 of each of the multiple vibration generating devices 210A to 210D via the first terminal of the flexible cable 295, the first pad electrode of the pad portion 290, and the first power line PL1. The second vibration drive signal can be provided to the second electrode 240 of each of the multiple vibration generating devices 210A to 210D via the second terminal of the flexible cable 295, the second pad electrode of the pad portion 290, and the second power line PL2.

[0263] According to an embodiment of the present disclosure, the flexible cable 295 may be configured to be transparent, translucent, or opaque.

[0264] Therefore, the vibration generating device 200 according to the embodiment of the present disclosure may include a plurality of vibration generating devices 210A to 210D, which are arranged or tiled at a certain interval so as to be implemented as a single vibrator without being driven independently, and thus can be driven as a large-area vibrator based on the vibration of the individual vibrations of the plurality of vibration generating devices 210A to 210D. Therefore, the vibration generating device 200 according to the embodiment of the present disclosure can vibrate over a large area or vibrate itself in a large area, thereby increasing or enhancing each of the sound characteristics and sound pressure level characteristics in the low-pitched vocal band and the reproduction frequency band of the sound output to the space.

[0265] Figures 10A to 11 A display device according to another embodiment of the present disclosure is illustrated.

[0266] Figure 10A and Figure 10B The display device 30 shown can be Figure 1 The display device 10 is implemented by adding a partition 600. Therefore, hereinafter, a repeated description of elements other than the partition and elements related thereto may be omitted or will be briefly given.

[0267] Combine Figure 2 For reference Figure 10A and Figure 10B, the display device 30 according to another embodiment of the present disclosure may further include a partition 600 provided near the rear surface of the display panel 100. The partition 600 may form an air gap AG or a space in which sound is generated when the vibration generating device 200 vibrates the display panel 100. The partition 600 may be referred to as a sound blocking member, a sound dividing member, a space dividing member, a panel, or a baffle, but embodiments of the present disclosure are not limited thereto. The air gap AG may be a vibration space, a sound pressure level space, a sound box, a sound portion, a resonance box, or a resonance portion, but embodiments of the present disclosure are not limited thereto.

[0268] As an example of the present disclosure, the separator 600 may include a material having elasticity that allows for a certain degree of compression. For example, the separator 600 may include polyurethane or polyolefin, but embodiments of the present disclosure are not limited thereto. As another example of the present disclosure, the separator 600 may include single-sided tape, double-sided tape, a single-sided foam pad, a double-sided foam pad, a single-sided foam tape, or a double-sided foam tape.

[0269] like Figure 10A As shown, the partition 600 may include a first partition 610. The first partition 610 may be provided between the display panel 100 and the support member 300. For example, the first hole 301 provided at the support member 300 may be provided at an area of ​​the support member 300 corresponding to the inner area constructed by the first partition 610, but embodiments of the present disclosure are not limited thereto. For example, even when the first partition 610 is provided, the first hole 301 may be provided at an area of ​​the support member 300 corresponding to the vibration generating device 200. For example, the first hole 301 may be provided at all or a portion of the inner area constructed by the first partition. For example, the first hole 301 may be provided along the periphery of the inner area constructed by the first partition 610.

[0270] The first spacer 610 may be provided to surround the vibration generating device 200. For example, the first spacer 610 may be provided along the area between the rear periphery of the display panel 100 (or the periphery of the rear surface of the display panel 100) and the front periphery of the support member 300 (or the periphery of the front surface of the support member 300). For example, the first spacer 610 may be provided to surround the entire vibration generating device 200. For example, the first spacer 610 may be provided to be adjacent to the panel connecting member 400 or to contact the panel connecting member 400, and may be surrounded by the panel connecting member 400. As another example of the present disclosure, the first spacer 610 and the panel connecting member 400 may be implemented as an integral body or a single body. The vibration generating device 200 may be Figure 3 or Figure 4 The vibration generating device shown.

[0271] For example, the first spacer 610 may have a shape that is the same as or different from the overall shape of the vibration generating device 200. For example, when the vibration generating device 200 has a rectangular shape, the first spacer 610 may have a rectangular shape having a size relatively larger than that of the vibration generating device 200. As another example of the present disclosure, the first spacer 610 may have a circular shape surrounding the vibration generating device 200.

[0272] The first spacer 610 can limit (or define) the vibration area (or vibration region) of the display panel 100 based on the vibration generating device 200. For example, as the size of the air gap AG formed by the first spacer 610 increases, the vibration region of the display panel 100 can increase to enhance the characteristics of low-pitched vocal cords. On the other hand, when the size of the air gap AG formed by the first spacer 610 decreases, the vibration region of the display panel 100 can decrease to enhance the characteristics of high-pitched vocal cords. Therefore, the arrangement of the first spacer 610 can be adjusted based on the characteristics of the range of vocal cords to be generated by the vibration of the display panel 100.

[0273] like Figure 10B As shown, the partition 600 may further include a second partition 620. The second partition 620 may be provided at the rear surface of the display panel 100 between the first partition 610 and the vibration generating device 200. For example, Figure 10B As shown, the first hole 301 may be provided at a region of the support member 300 corresponding to an inner region provided by the second spacer 620 , but embodiments of the present disclosure are not limited thereto.

[0274] For example, the first hole 301 may be provided at the entire inner region formed by the second partition 620 or at a portion of the second partition 620. For example, the first hole 301 may be provided along the periphery of the inner region formed by the second partition 620. Alternatively, the first hole 301 may be provided at a region of the support member 300 corresponding to the inner region formed by the second partition 620.

[0275] For example, the second separator 620 can be arranged to surround the vibration generating device 200, but the embodiments of the present disclosure are not limited thereto. According to an embodiment of the present disclosure, the second separator 620 can have a shape that is the same as or different from the overall shape of the vibration generating device 200 and / or the first separator 610. For example, when the vibration generating device 200 and the first separator 610 have a rectangular shape, the second separator 620 can have a size that is relatively larger than the vibration generating device 200. For example, the second separator 620 can have a size that is relatively smaller than the first separator 610. For example, the second separator 620 can have a rectangular shape. As another example, the second separator 620 can have a circular shape that surrounds the vibration generating device 200.

[0276] The second spacer 620 can limit (or define) the vibration area (or vibration region) of the display panel 100 based on the vibration generating device 200. For example, as the size of the second spacer 620 increases, the vibration region of the display panel 100 can increase to enhance the characteristics of low-pitched vocal cords. On the other hand, as the size of the second spacer 620 decreases, the vibration region of the display panel 100 can decrease to enhance the characteristics of high-pitched vocal cords. Therefore, the arrangement of the second spacer 620 can be adjusted based on the characteristics of the range of vocal cords to be generated by the vibration of the display panel 100.

[0277] Therefore, the display device 30 according to the embodiment of the present disclosure may include the partition 600 and thus may realize the reproduction frequency band of sound. For example, the display device 30 according to the embodiment of the present disclosure may include at least one or more of the first partition 610 and the second partition 620.

[0278] Figure 11 The display device 40 shown can be Figure 7 The display device 20 is implemented by adding the partition 700. Therefore, hereinafter, a repeated description of elements other than the partition and elements related thereto may be omitted or will be briefly given.

[0279] Combine Figure 7 For reference Figure 11 , the display device 40 according to another embodiment of the present disclosure may further include a partition 700 provided at the rear surface of the display panel 100. The partition 700 may form an air gap AG or a space in which sound is generated when the vibration generating device 200 vibrates the display panel 100. The partition 700 may be referred to as a sound blocking member, a sound dividing member, a space dividing member, a panel, or a baffle, but embodiments of the present disclosure are not limited thereto. The air gap AG may be a vibration space, a sound pressure level space, a sound box, a sound portion, a resonance box, or a resonance portion, but embodiments of the present disclosure are not limited thereto.

[0280] The partition 700 according to an embodiment of the present disclosure can spatially separate the first area A1 and the second area A2 of the display panel 100. For example, when the display panel 100 is vibrated by the first vibration generating device 201 and the second vibration generating device 202, the partition 700 can separate the sound or separate the sound channels, and can prevent or reduce the degradation of the sound characteristics caused by the interference of the sound. The first vibration generating device 201 can vibrate the first area A1 of the display panel 100, and the second vibration generating device 202 can vibrate the second area A2 of the display panel 100.

[0281] In addition, the first hole 301 provided at the support member 300 can be provided to correspond to each of the first vibration generating device 201 and the second vibration generating device 202. According to an embodiment of the present disclosure, based on the intensity of the sound waves generated by the first vibration generating device 201 and the second vibration generating device 202, the area of ​​the first hole provided to correspond to the first vibration generating device 201 and the area of ​​the first hole provided to correspond to the second vibration generating device 202 can be the same or different. For example, when the first vibration generating device 201 generates a sound wave having a first intensity and the second vibration generating device 202 generates a sound wave having a second intensity less than the first intensity, the total area of ​​the first holes provided to correspond to the first vibration generating device 201 can be greater than the total area of ​​the first holes provided to correspond to the second vibration generating device 202.

[0282] For example, the area of ​​each 1-1th hole provided corresponding to the first vibration generating device 201 may be the same as the area of ​​each 1-2th hole provided corresponding to the second vibration generating device 202, and the number of 1-1th holes provided corresponding to the first vibration generating device 201 may be greater than the number of 1-2 holes provided corresponding to the second vibration generating device 202. Alternatively, each 1-1th hole provided corresponding to the first vibration generating device 201 may have a larger area than each 1-2th hole provided corresponding to the second vibration generating device 202, and the number of 1-1th holes provided corresponding to the first vibration generating device 201 may be less than the number of 1-2 holes provided corresponding to the second vibration generating device 202.

[0283] The separator 700 according to an embodiment of the present disclosure may further include a first separator 710 and a second separator 720 disposed between the first vibration generating device 201 and the second vibration generating device 202. The first separator 710 and the second separator 720 may be disposed to be spaced apart from each other by a certain distance. For example, the first separator 710 and the second separator 720 may be disposed in parallel.

[0284] The first and second spacers 710 and 720 may be disposed between the central region of the display panel 100 and the support member 300, and may spatially separate the first and second regions A1 and A2 of the display panel 100. The first and second spacers 710 and 720 may separate the first and second sounds generated by the first and second vibration generating devices 201 and 202. Therefore, the first and second spacers 710 and 720 may be disposed between the first and second vibration generating devices 201 and 202.

[0285] For example, the first spacer 710 and the second spacer 720 can block the vibration generated by the first vibration generating device 201 at the first area A1 of the display panel 100 from being transmitted to the second area A2 of the display panel 100, or can block the vibration generated by the second vibration generating device 202 at the second area A2 of the display panel 100 from being transmitted to the first area A1 of the display panel 100.

[0286] Therefore, the first partition 710 and the second partition 720 can attenuate or absorb vibrations of the display panel at the center of the display panel 100, and thus can block the sound of the first area A1 from being transmitted to the second area A2, or can block the sound of the second area A2 from being transmitted to the first area A1. Therefore, the first partition 710 and the second partition 720 can separate the left sound and the right sound to further enhance the sound output characteristics of the display device. Therefore, the display device according to the embodiment of the present disclosure can separate the left sound and the right sound based on the first partition 710 and the second partition 720 to output sound or 2-channel stereo in the front direction of the display panel 100.

[0287] As another example, one of the first and second spacers 710 and 720 may be omitted. Even in this case, one of the first and second spacers 710 and 720 may be disposed between the first and second vibration generating devices 201 and 202, thereby separating left and right sounds. For example, when the second spacer 720 is omitted, the first spacer 710 may be disposed between the display panel 100 and the support member 300 to correspond to the rear centerline CL of the display panel 100. On the other hand, when the first spacer 710 is omitted, the second spacer 720 may be disposed between the display panel 100 and the support member 300 to correspond to the rear centerline CL of the display panel 100.

[0288] Therefore, the left and right sounds can be separated by the first partition 710 and the second partition 720, thereby further enhancing the sound output characteristics of the display device, and the display device including the first partition 710 or the second partition 720 can separate the left and right sounds based on the first partition 710 or the second partition 720 to output sound or 2-channel stereo in the front direction of the display panel 100.

[0289] The partition 700 according to an embodiment of the present disclosure may further include a third partition 730 disposed between the display panel 100 and the support member 300. The third partition 730 may be disposed along an area between the rear periphery of the display panel 100 (or the periphery of the rear surface of the display panel 100) and the front periphery of the support member 300 (or the periphery of the front surface of the support member 300) to surround the entirety of the first vibration generating device 201 and the second vibration generating device 202. The third partition 730 may be referred to as an edge partition, a sound blocking member, an edge surround, or an edge baffle, but these terms are not limited thereto. For example, the third partition 730 may be disposed adjacent to the panel connecting member 400 or contact the panel connecting member 400, and may be surrounded by the panel connecting member 400. As another example of the present disclosure, the third partition 730 and the panel connecting member 400 may be implemented as an integral body or a single body.

[0290] The third spacer 730 may provide first to third air gaps AG1 to AG3 between the display panel 100 and the support member 300 together with the first spacer 710 and the second spacer 720. For example, each of the first to third air gaps AG1 to AG3 may be referred to as a vibration space, a sound pressure level space, a sound box, a sound portion, a resonance box, or a resonance portion, but embodiments of the present disclosure are not limited thereto.

[0291] The first air gap AG1 may be provided at the first area A1 of the display panel 100 surrounded by the first and third spacers 710 and 730 provided at the first area A1 of the display panel 100 .

[0292] The second air gap AG2 may be provided at the second area A2 of the display panel 100 surrounded by the second spacer 720 and the third spacer 730 provided at the second area A2 of the display panel 100 .

[0293] The third air gap AG3 may be provided in a rear center area of ​​the display panel 100 surrounded by the first and second spacers 710, 720, and 730. For example, the third air gap AG3 may be provided between the first and second air gaps AG1 and AG2 and include 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 shielding space, or a sound interference prevention space, but these terms are not limited thereto. The third air gap AG3 may spatially separate the first and second air gaps AG1 and AG2, thereby preventing resonance or interference in a specific frequency band generated in each of the first and second air gaps AG1 and AG2.

[0294] The first vibration generating device 201 may be surrounded by the first spacer 710 and the third spacer 730 providing the first air gap AG1, and the second vibration generating device 202 may be surrounded by the second spacer 720 and the third spacer 730 providing the second air gap AG2. When one of the first spacer 710 and the second spacer 720 is omitted, the third air gap AG3 may be omitted.

[0295] Therefore, the third partition 730 can individually surround each of the first vibration generating device 201 and the second vibration generating device 202 together with the first partition 710 and the second partition 720, and therefore, the sound pressure level characteristics of each of the left and right sounds can be increased by ensuring the vibration space of each of the first vibration generating device 201 and the second vibration generating device 202, and the sound or sound pressure level can be prevented from leaking to the outside through the side surface (or lateral side surface) between the display panel 100 and the support member 300, thereby further enhancing the sound output characteristics of the display device.

[0296] The partition 700 according to the embodiment of the present disclosure may further include a fourth partition 740 (or a first enclosure) surrounding the first vibration generating device 201 and a fifth partition 750 (or a second enclosure) surrounding the second vibration generating device 202 .

[0297] The fourth spacer 740 may be disposed between the display panel 100 and the support member 300 to correspond to the first air gap AG1, and may independently surround the first vibration generating device 201. The fourth spacer 740 according to an embodiment of the present disclosure may have a quadrilateral shape surrounding the first vibration generating device 201, but the embodiment of the present disclosure is not limited thereto and may have a shape that is the same as or different from the overall shape of the first vibration generating device 201. For example, when the first vibration generating device 201 has a quadrilateral shape, the fourth spacer 740 may have a quadrilateral shape that is relatively larger in size than the first vibration generating device 201, or a circular shape or an elliptical shape.

[0298] The fourth spacer 740 can limit (or define) the vibration area (or vibration region) of the display panel 100 based on the first vibration generating device 201. For example, as the size of the fourth spacer 740 increases, the vibration region of the first region A1 can increase to enhance the sonic characteristics of the low-pitched vocal cords of the left voice. On the other hand, as the size of the fourth spacer 740 decreases, the vibration region of the first region A1 can decrease to enhance the sonic characteristics of the high-pitched vocal cords of the left voice. Therefore, the size of the fourth spacer 740 can be adjusted based on the characteristics of the range of vocal cords desired for the vibration of the display panel 100.

[0299] The fifth spacer 750 may be provided between the display panel 100 and the support member 300 to correspond to the second air gap AG2 and may independently surround the second vibration generating device 202. The fifth spacer 750 according to an embodiment of the present disclosure may have the same shape as the fourth spacer 740 and may have a structure symmetrical to the fourth spacer 740 with respect to the rear center line CL of the display panel 100 for symmetry between left and right sounds. A repeated description thereof may be omitted.

[0300] The fifth spacer 750 can limit (or define) the vibration area (or vibration region) of the display panel 100 based on the second vibration generating device 202. For example, as the size of the fifth spacer 750 increases, the vibration region of the second region A2 can increase to enhance the sonic characteristics of the low-pitched vocal cords of the right voice. On the other hand, as the size of the fifth spacer 750 decreases, the vibration region of the second region A2 can decrease to enhance the sonic characteristics of the high-pitched vocal cords of the right voice. Therefore, the size of the fifth spacer 750 can be adjusted based on the characteristics of the range of vocal cords required for the vibration of the display panel 100.

[0301] The fourth spacer 740 and the fifth spacer 750 can limit the vibration area (or vibration region) of the first vibration generating device 201 and the second vibration generating device 202, and thus can enhance the left-right symmetry of the left sound and the right sound generated by the vibration of the display panel 100, and can optimize the sound pressure level characteristics and reproduction frequency band of each of the left sound and the right sound. As another example, when the fourth spacer 740 and the fifth spacer 750 are provided, the third spacer 730 can be omitted. As another example, when the fourth spacer 740 and the fifth spacer 750 are provided, one or more of the first spacer 710, the second spacer 720 and the third spacer 730 can be omitted.

[0302] Therefore, the display device 40 according to the embodiment of the present disclosure may include the partition 700, and thus the sound pressure level characteristics and reproduction frequency band of each of the left sound and the right sound may be optimized. For example, the display device 40 according to the embodiment of the present disclosure may include at least one or more of the first partition 710 and the second partition 720. As another example, the display device 40 according to the embodiment of the present disclosure may include the third partition 730 and one or more of the first partition 710 and the second partition 720. As another example, the display device 40 according to the embodiment of the present disclosure may include the third partition 730 to the fifth partition 750. As another example of the present disclosure, the display device 40 according to the embodiment of the present disclosure may include all of the first partition 710 to the fifth partition 750.

[0303] Therefore, the display device 40 according to another embodiment of the present disclosure can output left sound and right sound in the front direction of the display panel 100 through the first vibration generating device 201 and the second vibration generating device 202 to provide sound or stereo sound to the user, and can separate the left sound and right sound based on the partition 700 to output sound or 2-channel stereo sound in the front direction of the display panel 100.

[0304] 12A to 12D Show Figure 11 For the purpose of description, the arrangement of the first hole 301 can be divided into the following: 12A to 12D As in, but 12A to 12D The arrangements of the first holes 301 can be combined.

[0305] like Figure 12A As shown, in the support member 300, the first hole 301 may be provided at a region corresponding to the first vibration generating device 201 and a region corresponding to the second vibration generating device 202. According to an embodiment of the present disclosure, at least one or more of the first to fifth spacers 710 to 750 may be provided at the display panel 100.

[0306] like Figure 12B As shown, in the support member 300, the first hole 301 may be provided at a region corresponding to an inner region of the third spacer 730. According to an embodiment of the present disclosure, the first spacer 710, the second spacer 720, the fourth spacer 740, and the fifth spacer 750 may not be provided at the display panel 100, and at least one or more of the first spacer 710, the second spacer 720, the fourth spacer 740, and the fifth spacer 750 may be provided at the display panel 100.

[0307] like Figure 12C As shown, in the support member 300, the first hole 301 may be provided at a region corresponding to the first air gap AG1 surrounded by the first spacer 710 and the third spacer 730 and a region corresponding to the second air gap AG2 surrounded by the second spacer 720 and the third spacer 730. According to an embodiment of the present disclosure, the fourth spacer 740 and the fifth spacer 750 may not be provided at the display panel 100, and one or more of the fourth spacer 740 and the fifth spacer 750 may be provided at the display panel 100.

[0308] According to an embodiment of the present disclosure, when only one of the first spacer 710 and the second spacer 720 is provided at the display panel 100, the first hole 301 at the support member 300 can be provided at an area corresponding to the first air gap AG1 and the second air gap AG2 provided by the first spacer 710 or the second spacer 720 and the third spacer 730.

[0309] like Figure 12D As shown, in the support member 300, the first hole 301 may be provided at a region corresponding to an inner region of the fourth spacer 740 and a region corresponding to an inner region of the fifth spacer 750. According to an embodiment of the present disclosure, the first to third spacers 710 to 730 may not be provided at the display panel 100, and at least one or more of the first to third spacers 710 to 730 may be provided at the display panel 100.

[0310] exist 12A to 12D In the embodiment, the first hole 301 may be entirely provided at each region, but the embodiments of the present disclosure are not limited thereto. For example, the first hole 301 may be provided at a portion of each region.

[0311] Figure 13 and Figure 14 In a display device according to another embodiment of the present disclosure, Figure 1 Therefore, hereinafter, repeated descriptions of elements other than the modified elements may be omitted or will be briefly given.

[0312] Reference Figure 13 , the display device 50 may include a sound absorbing member 800 provided at an inner surface of the support member 300 (for example, a surface (inner surface or first surface) facing the vibration generating device 200 among the surfaces of the support member 300). Since the sound absorbing member 800 is provided at the inner surface of the support member 300, even when the sound waves generated by the vibration generating device 200 may cause the support member 300 to vibrate, the vibration of the support member 300 can be partially absorbed and reduced by the sound absorbing member 800, thereby enhancing the sound characteristics of the low-pitched vocal range.

[0313] like Figure 13 As shown, the sound absorbing member 800 may include a second hole 801 provided at a region corresponding to the first hole 301, so that air passes through the sound absorbing member 800. When the sound absorbing member 800 absorbs sound waves to reduce air pressure, the second hole 801 may not be provided. As another example of the present disclosure, when the sound absorbing member 800 is configured to have a hole shape, the size of the second hole 801 may be adjusted to be smaller.

[0314] exist Figure 13 In the example, the sound absorbing member 800 is applied to Figure 2 The example of the display device 10, but the sound absorbing member 800 can also be applied to Figure 7 When the sound absorbing member 800 is applied to the display device 20. Figure 7When the display device 20 is configured, the second hole 801 may be configured to correspond to the first hole, which is configured to correspond to the first vibration generating device 201 and the second vibration generating device 202 .

[0315] Reference Figure 14 , the display device 60 according to an embodiment of the present disclosure may include a vibration plate 900, which is arranged at the inner surface of the support member 300 to achieve low-pitched sound. When the vibration plate 900 is provided, the vibration plate 900 may vibrate based on the sound waves generated by the vibration generating device 200 to generate low-pitched sound, thereby enhancing the sound characteristics of the low-pitched sound band. For example, the vibration plate 900 may be referred to as other terms, such as a plate, a rear vibration plate, a rear surface vibration plate, a sound plate, a rear sound plate, an auxiliary vibration plate, or a sub-vibration plate. For example, based on the sound characteristics required for the display device 60 or the sound characteristics of the low-pitched sound band, the vibration plate 900 may include at least one or more of a metal material, a plastic material, a fiber material, a leather material, a wood material, a paper material, and a glass material.

[0316] exist Figure 14 In the embodiment, in the vibration plate 900 , the third hole 901 may be provided at a region corresponding to the first hole 301 , but the embodiment of the present disclosure is not limited thereto. For example, the third hole 901 may not be provided.

[0317] exist Figure 14 In the example, the vibration plate 900 is applied to Figure 2 The example of the display device 10, but the vibration plate 900 can also be applied to Figure 7 Display device 20. When the vibration plate 900 is applied to Figure 7 When the display device 20 is configured, the third hole 901 may be configured to correspond to the first hole, which is configured to correspond to the first vibration generating device 201 and the second vibration generating device 202 .

[0318] The vibration generating device according to the embodiment of the present disclosure can be applied to the vibration generating device set at the display device. The display device according to the embodiment of the present disclosure can be applied to mobile devices, video phones, smart watches, watch phones, wearable devices, foldable devices, rollable devices, bendable devices, flexible devices, curved devices, electronic notepads, electronic books, portable multimedia players (PMPs), personal digital assistants (PDAs), MP3 players, mobile medical devices, desktop personal computers (PCs), laptop PCs, netbook computers, workstations, navigation devices, car navigation devices, car display devices, car devices, theater equipment, theater display equipment, TVs, wallpaper display devices, signage devices, game consoles, notebook computers, monitors, cameras, camcorders, household appliances, etc. In addition, the vibration generating device according to the present disclosure can be applied to organic light-emitting lighting devices or inorganic light-emitting lighting devices. When the vibration generating device of the present disclosure is applied to lighting equipment, the vibration generating device can be used as lighting and speakers. In addition, when the display device of the present disclosure is applied to a mobile device, the vibration generating device can be used as one or more of a speaker, a receiver, and a tactile member, but the embodiments of the present disclosure are not limited thereto.

[0319] A display device according to an embodiment of the present disclosure will be described below.

[0320] According to an embodiment of the present disclosure, a display device may include: a display panel configured to display an image; a vibration generating device at a rear surface of the display panel to vibrate the display panel; and a supporting member at the rear surface of the display panel and including a first hole.

[0321] According to some embodiments of the present disclosure, the vibration generating device may include a plurality of inorganic material portions and a plurality of organic material portions, and the plurality of inorganic material portions and the plurality of organic material portions are alternately and repeatedly disposed on the same plane.

[0322] According to some embodiments of the present disclosure, the vibration generating device may be provided as a plurality of vibration generating devices spaced apart from each other.

[0323] According to some embodiments of the present disclosure, a plurality of vibration generating devices may be driven as a single vibration device.

[0324] According to some embodiments of the present disclosure, a plurality of vibration generating devices may be arranged to have a distance of 0.1 mm or more and less than 3 cm from each other.

[0325] According to some embodiments of the present disclosure, the distance may be equal to or greater than 0.1 mm and less than 5 mm.

[0326] According to some embodiments of the present disclosure, the first hole may be provided at the entire area or periphery of the vibration generating device.

[0327] According to some embodiments of the present disclosure, the areas of the first holes may be the same or different based on the intensity of the sound waves generated by the vibration generating device.

[0328] According to some embodiments of the present disclosure, the total area of ​​the first holes provided at the first region where the sound waves having a first intensity arrive may be greater than the total area of ​​the first holes provided at the second region where the sound waves having a second intensity lower than the first intensity arrive.

[0329] According to some embodiments of the present disclosure, the area of ​​each first hole set in the first region may be the same as the area of ​​each first hole set in the second region, and the number of first holes set in the first region may be greater than the number of first holes set in the second region.

[0330] According to some embodiments of the present disclosure, the area of ​​each first hole set in the first region may be larger than the area of ​​each first hole set in the second region, and the number of first holes set in the first region may be smaller than the number of first holes set in the second region.

[0331] According to some embodiments of the present disclosure, the display apparatus may further include a sound absorbing member provided at a surface facing the vibration generating device among surfaces of the supporting member.

[0332] According to some embodiments of the present disclosure, the sound absorbing member may further include a second hole corresponding to the first hole.

[0333] According to some embodiments of the present disclosure, the display apparatus may further include a vibration plate provided at a surface facing the vibration generating device among surfaces of the supporting member.

[0334] According to some embodiments of the present disclosure, the vibration plate may be configured to vibrate based on sound waves generated by the vibration generating device to generate low-pitched sound.

[0335] According to some embodiments of the present disclosure, the vibration plate may further include a second hole corresponding to the first hole.

[0336] According to some embodiments of the present disclosure, the display apparatus may further include a first spacer between the rear surface of the display panel and the support member to surround the vibration generating device, and the first hole may be provided in an inner area of ​​the first spacer.

[0337] According to some embodiments of the present disclosure, the size of the first spacer may be adjusted based on the range of a sound track to be generated by the vibration of the display panel caused by the vibration generating device.

[0338] According to some embodiments of the present disclosure, the display device may further include: a first partition between the rear surface of the display panel and the supporting member, the first partition surrounding the vibration generating device; and a second partition between the vibration generating device and the first partition, the second partition surrounding the vibration generating device, and the first hole may be set in an internal area of ​​the second partition.

[0339] According to some embodiments of the present disclosure, the size of the second spacer may be adjusted based on the range of a sound cord to be generated by the vibration of the display panel caused by the vibration generating device.

[0340] According to some embodiments of the present disclosure, the vibration generating device may be configured to be provided as one or more vibration generating devices at the rear surface of the display panel, and the first hole may be provided at each of the one or more vibration generating devices.

[0341] According to some embodiments of the present disclosure, a vibration generating device may include a plurality of inorganic material portions having piezoelectric properties and an organic material portion connected between the plurality of inorganic material portions.

[0342] According to some embodiments of the present disclosure, a vibration generating device may include: a piezoelectric composite layer including a plurality of inorganic material portions having piezoelectric properties and an organic material portion between the plurality of inorganic material portions; a first protective layer disposed at a first surface of the piezoelectric composite layer; and a second protective layer disposed at a second surface of the piezoelectric composite layer opposite to the first surface.

[0343] According to some embodiments of the present disclosure, the vibration generating device may further include a first electrode between each of the plurality of inorganic material portions and the organic material portions and the first protective layer, and a second electrode between each of the plurality of inorganic material portions and the organic material portions and the second protective layer.

[0344] According to an embodiment of the present disclosure, a display device may include: a display panel, which is configured to display an image and includes a first area and a second area; a first vibration generating device, which is at the rear surface of the display panel to vibrate the first area; a second vibration generating device, which is at the rear surface of the display panel to vibrate the second area; and a supporting member, which is at the rear surface of the display panel, and the supporting member may be configured to include a first hole corresponding to the first vibration generating device and the second vibration generating device.

[0345] According to some embodiments of the present disclosure, each of the first vibration generating device and the second vibration generating device may include a plurality of inorganic material portions and a plurality of organic material portions, which are alternately and repeatedly disposed on the same plane.

[0346] According to some embodiments of the present disclosure, each of the first vibration generating device and the second vibration generating device may be provided as a plurality of vibration generating devices spaced apart from each other.

[0347] According to some embodiments of the present disclosure, a plurality of vibration generating devices may be driven as a single vibration device.

[0348] According to some embodiments of the present disclosure, a plurality of vibration generating devices may be arranged to have a distance of 0.1 mm or more and less than 3 cm from each other.

[0349] According to some embodiments of the present disclosure, the distance may be equal to or greater than 0.1 mm and less than 5 mm.

[0350] According to some embodiments of the present disclosure, the first hole may be provided at the entire area or periphery of the first vibration generating device and at the entire area or periphery of the second vibration generating device.

[0351] According to some embodiments of the present disclosure, the area of ​​the first hole corresponding to the first vibration generating device and the area of ​​the first hole corresponding to the second vibration generating device can be the same or different based on the intensity of the sound waves generated by the vibration of each of the first vibration generating device and the second vibration generating device.

[0352] According to some embodiments of the present disclosure, the first vibration generating device can be configured to generate a sound wave having a first intensity, the second vibration generating device can be configured to generate a sound wave having a second intensity lower than the first intensity, and the total area of ​​the first hole corresponding to the first vibration generating device can be greater than the total area of ​​the first hole corresponding to the second vibration generating device.

[0353] According to some embodiments of the present disclosure, the area of ​​each first hole corresponding to the first vibration generating device may be the same as the area of ​​each first hole corresponding to the second vibration generating device, and the number of first holes corresponding to the first vibration generating device may be greater than the number of first holes corresponding to the second vibration generating device.

[0354] According to some embodiments of the present disclosure, the area of ​​each first hole corresponding to the first vibration generating device may be larger than the area of ​​each first hole corresponding to the second vibration generating device, and the number of first holes corresponding to the first vibration generating device may be smaller than the number of first holes corresponding to the second vibration generating device.

[0355] According to some embodiments of the present disclosure, the display apparatus may further include a sound absorbing member provided at a surface facing the first vibration generating device and the second vibration generating device among surfaces of the supporting member.

[0356] According to some embodiments of the present disclosure, the vibration plate may be configured to vibrate based on sound waves generated by the first vibration generating device and the second vibration generating device to generate a low-pitched sound.

[0357] According to some embodiments of the present disclosure, the sound absorbing member may further include a second hole disposed to correspond to the first hole.

[0358] According to some embodiments of the present disclosure, the display apparatus may further include a vibration plate provided at a surface facing the first vibration generating device and the second vibration generating device among surfaces of the supporting member.

[0359] According to some embodiments of the present disclosure, the vibration plate may further include a third hole disposed to correspond to the first hole.

[0360] According to some embodiments of the present disclosure, the display device may further include a partition between the rear surface of the display panel and the supporting member, the partition may further include at least one or more partitions dividing the first area and the second area, and the first hole may be set to correspond to the first area and the second area.

[0361] According to some embodiments of the present disclosure, at least one or more partitions may include at least one or more of a first partition disposed between the first vibration generating device and the second vibration generating device and a second partition disposed parallel to the first partition with a certain interval therebetween.

[0362] According to some embodiments of the present disclosure, the partition further includes a third partition disposed to surround the entirety of the first vibration generating device and the second vibration generating device, and the first hole may be disposed at an inner region of the third partition.

[0363] According to some embodiments of the present disclosure, the display device may further include: a first air gap surrounded by at least one or more spacers and a third spacer at a first area; and a second air gap surrounded by at least one or more spacers and a third spacer at a second area, and the first hole may be set to correspond to the first air gap and the second air gap.

[0364] According to some embodiments of the present disclosure, the partition may further include: a fourth partition surrounding the first vibration generating device; and a fifth partition surrounding the second vibration generating device, and the first hole may be set in an inner area of ​​the fourth partition and an inner area of ​​the fifth partition.

[0365] According to some embodiments of the present disclosure, a size of each of the fourth and fifth spacers may be adjusted based on a range of a soundtrack to be generated by vibration of the display panel caused by each of the first and second vibration generating devices.

[0366] It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the technical concept or scope of the present disclosure. Therefore, the embodiments of the present disclosure may be intended to cover modifications and variations of the present disclosure as long as they fall within the scope of the appended claims and their equivalents.

[0367] CROSS-REFERENCE TO RELATED APPLICATIONS

[0368] This application claims the benefit of and priority to Korean Patent Application No. 10-2020-0059625, filed on May 19, 2020, which is hereby incorporated by reference herein in its entirety.

Claims

1. A display device, comprising: a display panel configured to display an image; a vibration generating device at a rear surface of the display panel to vibrate the display panel; a supporting member at the rear surface of the display panel and including a first hole; a first spacer disposed between the display panel and the support member along a periphery of the rear surface of the display panel and a periphery of the front surface of the support member, the first spacer surrounding the vibration generating device; as well as a second partition, the second partition being between the vibration generating device and the first partition, the second partition surrounding the vibration generating device, wherein the first hole is provided at an inner region of the second partition and includes a plurality of holes, The vibration generating device includes a plurality of inorganic material parts and a plurality of organic material parts, and the plurality of inorganic material parts and the plurality of organic material parts are alternately and repeatedly arranged on the same plane. wherein the plurality of holes are arranged at intervals in a region of the support member corresponding to the vibration generating device and are spaced apart from the vibration generating device in a direction perpendicular to the display panel, and The supporting member includes at least one of a sound absorbing member and a vibration plate at a surface facing the vibration generating device.

2. The display device according to claim 1, wherein The vibration generating device is provided as a plurality of vibration generating devices spaced apart from each other.

3. The display device according to claim 2, wherein The plurality of vibration generating devices are driven as a single vibration device.

4. The display device according to claim 2, wherein The plurality of vibration generating devices are arranged to have a distance of 0.1 mm or more and less than 3 cm from each other.

5. The display device according to claim 4, wherein The distance is equal to or greater than 0.1 mm and less than 5 mm. The display device according to claim 1 , wherein: The first hole is provided at the entire area or periphery of the vibration generating device.

7. The display device according to claim 1, wherein The area of ​​the first hole is determined based on the intensity of the sound wave generated by the vibration generating device.

8. The display device according to claim 7, wherein The total area of ​​the first holes provided at a first region where a sound wave having a first intensity reaches is greater than the total area of ​​the first holes provided at a second region where a sound wave having a second intensity lower than the first intensity reaches.

9. The display device according to claim 8, wherein An area of ​​each first hole provided in the first region is the same as an area of ​​each first hole provided in the second region, and the number of the first holes provided in the first region is greater than the number of the first holes provided in the second region.

10. The display device according to claim 8, wherein An area of ​​each first hole provided in the first region is larger than an area of ​​each first hole provided in the second region, and the number of first holes provided in the first region is smaller than the number of first holes provided in the second region.

11. The display device according to claim 1, wherein The sound absorbing member further includes a second hole corresponding to the first hole.

12. The display device according to claim 1, wherein The vibration plate is configured to vibrate based on the sound waves generated by the vibration generating device to generate low-pitched sound.

13. The display device according to claim 1, wherein The vibration plate further includes a second hole corresponding to the first hole.

14. The display device according to claim 1, wherein A size of the first partition is adjusted based on a range of a sound track to be generated by the vibration of the display panel caused by the vibration generating device.

15. The display device according to claim 1, wherein The size of the second partition is adjusted based on the range of a sound track to be generated by the vibration of the display panel caused by the vibration generating device.

16. The display device according to claim 1, in, The vibration generating device is configured to be provided as one or more vibration generating devices at the rear surface of the display panel, and Wherein, the first hole is provided at each of the one or more vibration generating devices.

17. A display device, comprising: a display panel configured to display an image and including a first area and a second area; a first vibration generating device at a rear surface of the display panel to vibrate the first area; a second vibration generating device at the rear surface of the display panel to vibrate the second area; a supporting member at the rear surface of the display panel; a first spacer disposed between the display panel and the support member along a periphery of the rear surface of the display panel and a periphery of the front surface of the support member, the first spacer surrounding the first vibration generating device and the second vibration generating device; as well as a second partition, each of the second partitions being between each of the first vibration generating device and the second vibration generating device and the first partition, each second partition surrounding each of the first vibration generating device and the second vibration generating device, respectively; wherein the supporting member is configured to include a first hole corresponding to the first vibration generating device and the second vibration generating device, wherein the first hole is provided at an inner region of each second partition and comprises a plurality of holes, wherein each of the first vibration generating device and the second vibration generating device comprises a plurality of inorganic material portions and a plurality of organic material portions, and the plurality of inorganic material portions and the plurality of organic material portions are alternately and repeatedly arranged on the same plane, wherein the plurality of holes are arranged at intervals in regions of the support member corresponding to the first vibration generating device and the second vibration generating device, and are spaced apart from the first vibration generating device and the second vibration generating device in a direction perpendicular to the display panel, and Here, the supporting member includes at least one of a sound absorbing member and a vibration plate at a surface facing the first vibration generating device and the second vibration generating device.

18. The display device according to claim 17, wherein Each of the first vibration generating device and the second vibration generating device is provided as a plurality of vibration generating devices spaced apart from each other.

19. The display device according to claim 18, wherein The plurality of vibration generating devices are driven as a single vibration device.

20. The display device according to claim 18, wherein The plurality of vibration generating devices are arranged to have a distance of 0.1 mm or more and less than 3 cm from each other.

21. The display device according to claim 20, wherein The distance is equal to or greater than 0.1 mm and less than 5 mm.

22. The display device according to claim 17, wherein The first holes are provided at an entire area or circumference of the first vibration generating device and at an entire area or circumference of the second vibration generating device.

23. The display device according to claim 17, wherein An area of ​​a first hole corresponding to the first vibration generating device and an area of ​​a first hole corresponding to the second vibration generating device are determined based on an intensity of a sound wave generated by vibration of each of the first vibration generating device and the second vibration generating device.

24. The display device according to claim 23, wherein The first vibration generating device is configured to generate a sound wave having a first intensity, The second vibration generating device is configured to generate a sound wave having a second intensity lower than the first intensity, and A total area of ​​the first holes corresponding to the first vibration generating device is greater than a total area of ​​the first holes corresponding to the second vibration generating device.

25. The display device according to claim 24, wherein The area of ​​each first hole corresponding to the first vibration generating device is the same as the area of ​​each first hole corresponding to the second vibration generating device, and the number of first holes corresponding to the first vibration generating device is greater than the number of first holes corresponding to the second vibration generating device.

26. The display device according to claim 25, wherein An area of ​​each first hole corresponding to the first vibration generating device is greater than an area of ​​each first hole corresponding to the second vibration generating device, and the number of first holes corresponding to the first vibration generating device is less than the number of first holes corresponding to the second vibration generating device.

27. The display device according to claim 17, wherein The sound absorbing member further includes a second hole disposed to correspond to the first hole.

28. The display device according to claim 17, wherein The vibration plate is configured to vibrate based on sound waves generated by the first vibration generating device and the second vibration generating device to generate a low-pitched sound.

29. The display device according to claim 17, wherein The vibration plate further includes a third hole disposed to correspond to the first hole.

30. The display device according to claim 17, wherein A size of each of the first and second partitions is adjusted based on a range of a sound track to be generated by vibration of the display panel caused by each of the first and second vibration generating devices.

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