Display device

Abstract

The present application relates to a display apparatus. The display apparatus includes a display panel configured to display an image, a circuit portion including a printed circuit board disposed spaced apart from a first portion of the display panel and connected to the display panel, a first vibration device disposed at a rear surface of the display panel, and a second vibration device disposed at a rear surface of the printed circuit board.

Description

[0001] This application is a divisional application of the original invention patent application with application number 202110815023.8 (application date: July 19, 2021, invention title: display device). Technical Field

[0002] This disclosure relates to a display device, and more specifically, to a display device that causes a display panel to vibrate to produce sound. Background Technology

[0003] Display devices are installed in home electronic devices or products such as televisions (TVs), monitors, laptops, smartphones, tablets, electronic tablets, wearable devices, smartwatches, portable information devices, navigation devices, or vehicle control display devices, and are used as screens for displaying images.

[0004] Display devices may include a display panel for displaying images and a sound device for outputting sound associated with the images.

[0005] However, display devices have limitations in outputting multi-channel stereo or realistic sound through sound devices, which in turn reduces the viewer's sense of immersion. Summary of the Invention

[0006] Therefore, the inventors have recognized the aforementioned problems and have conducted various experiments on display devices in which sound travels in one or more directions, thereby providing a surround sound environment. Through these experiments, the inventors have invented a display device with a novel structure that outputs sound in one or more directions by using each of the components included in the display device, such as the display panel and the printed circuit board (PCB) connected to the display panel, as a sound resonator.

[0007] Therefore, embodiments of this disclosure relate to a display device that substantially eliminates one or more problems caused by the limitations and disadvantages of related technologies.

[0008] One aspect of this disclosure is to provide a display device that outputs sound by using elements included in the display device.

[0009] Another aspect of this disclosure is to provide a display device that outputs sound in one or more directions of the display device by using elements included in the display device.

[0010] Another aspect of this disclosure is to provide a display device in which the thickness of the display device is reduced and sound is output in one or more directions of the display device, thereby providing a surround sound environment.

[0011] Additional features and aspects of this disclosure will be set forth in the description which follows, and will be apparent in part from the description or may be learned by practicing the inventive concept provided herein. Other features and aspects of the inventive concept may be realized and obtained by means of the structures particularly pointed out in the written description (or which may be deduced therefrom) and the claims and drawings.

[0012] To achieve these and other advantages and in accordance with the purposes of this disclosure, as implemented and broadly described herein, a display device includes: a display panel configured to display an image; a circuit section including a printed circuit board spaced apart from and connected to a first portion of the display panel; a first vibration device disposed at a rear surface of the display panel; and a second vibration device disposed at a rear surface of the printed circuit board.

[0013] The display device according to embodiments of the present disclosure can output sound in one or more directions of the display device, and thus, the user can view images in a surround sound environment, thereby increasing the user's sense of immersion.

[0014] The display device according to embodiments of the present disclosure can output sound in one or more directions of the display device by using elements included in the display device, thereby providing a surround sound environment and reducing the thickness of the display device.

[0015] Other systems, methods, features, and advantages will be or will become apparent to those skilled in the art upon review of the following drawings and detailed description. All such additional systems, methods, features, and advantages are intended to be included in this specification, within the scope of this disclosure, and protected by the appended claims. Nothing in this section should be construed as limiting these claims. Other aspects and advantages are discussed below in conjunction with embodiments of this disclosure.

[0016] It should be understood that the foregoing general description and the following detailed description of this disclosure are exemplary and explanatory, and are intended to provide further explanation of the claimed inventive concept.

[0017] Appendix 1. A display device comprising:

[0018] Display panel, the display panel being configured to display images;

[0019] The circuit section includes a printed circuit board that is spaced apart from and connected to the first portion of the display panel;

[0020] A first vibration device is disposed on the rear surface of the display panel; and

[0021] A second vibration device is disposed on the rear surface of the printed circuit board.

[0022] Appendix 2. The display device according to Appendix 1 further includes:

[0023] A first component, configured to accommodate the display panel and the circuit section;

[0024] A second component is configured to cover the upper part of the first component and one or more peripheries of the front surface of the display panel.

[0025] Appendix 3. The display device according to Appendix 1, wherein the first vibration device is configured to cause the display panel to vibrate to produce a first sound, and

[0026] The second vibration device is configured to vibrate the printed circuit board to produce a second sound.

[0027] Note 4. The display device according to Note 3, wherein the second sound has a frequency of pitch bands that are different from the pitch bands of the first sound.

[0028] Note 5. The display device according to Note 3, wherein the second sound has the same frequency of the pitch vocal cords as the pitch vocal cords of the first sound.

[0029] Appendix 6. The display device according to Appendix 3, wherein the first sound is configured to be output in the forward direction of the display panel, and

[0030] The second sound is configured to be output in the front-upward direction of the display panel.

[0031] Note 7. The display device according to Note 1, wherein the printed circuit board is configured at an angle relative to the display panel.

[0032] Appendix 8. The display device according to Appendix 7, wherein,

[0033] The printed circuit boards are configured as a plurality of such boards, and the plurality of printed circuit boards are arranged at certain intervals along the first portion of the display panel.

[0034] The plurality of printed circuit boards are arranged at the same angle toward the front-upward direction of the display panel, or at different angles toward the front-upward direction of the display panel.

[0035] Appendix 9. The display device according to Appendix 2, wherein,

[0036] The first component includes a first structure disposed on the rear surface of the display panel and the rear surface of the circuit section, and

[0037] The first structure includes:

[0038] Structure 1-1, wherein structure 1-1 is configured to correspond to the display panel; and

[0039] The first-second structure is configured at a certain angle relative to the first-first structure to correspond to the printed circuit board.

[0040] Note 10. The display device according to Note 9, wherein the first-2 structure extends from the first-1 structure and bends in the front-upward direction of the display panel.

[0041] Note 11. The display device according to Note 9 further includes a hinge portion disposed between the first-1 structure and the first-2 structure.

[0042] Each of one side of the first-1 structure and one side of the first-2 structure is connected to the hinge portion, and the first-2 structure is rotatable relative to the hinge portion in the front-upward direction of the display panel.

[0043] Note 12. The display device according to Note 11, wherein the area of ​​the second member overlapping with the display panel is spaced apart from the display panel.

[0044] Note 13. The display device according to Note 11, wherein the area of ​​the second member overlapping with the display panel is spaced apart from the display panel by a height, the height being configured to prevent the display panel from contacting the second member when the first-second structure is rotated.

[0045] Note 14. The display device according to Note 11 further includes a third component disposed on the front surface of the display panel.

[0046] The area where the second component overlaps with the third component is spaced apart from the third component.

[0047] Note 15. The display device according to Note 11 further includes a third component disposed on the front surface of the display panel.

[0048] Wherein, the area of ​​the second member that overlaps with the third member is spaced apart from the third member by a height, the height being configured to prevent the third member from contacting the first member when the first-second structure rotates.

[0049] Note 16. The display device according to Note 2, wherein the first component includes a recess configured to receive each of the first vibration device and the second vibration device.

[0050] Note 17. The display device according to Note 1 further includes a board disposed on the printed circuit board.

[0051] The plate is positioned in an area other than the installation area and the vibration device installation area.

[0052] Note 18. The display device according to Note 1 further includes a first pattern disposed on the printed circuit board.

[0053] The first pattern includes at least one or more grooves, holes or protrusions.

[0054] Note 19. The display device according to Note 18, wherein the first pattern is configured to surround the second vibrating device.

[0055] Note 20. The display device according to Note 18, wherein the first pattern comprises at least two or more different shapes of the one or more recesses, holes or protrusions.

[0056] Appendix 21. The display device according to Appendix 1, wherein,

[0057] Each of the first vibration device and the second vibration device includes a piezoelectric vibration component, and

[0058] The piezoelectric vibration component includes:

[0059] Multiple inorganic material portions, wherein the multiple inorganic material portions have piezoelectric properties; and

[0060] An organic material portion, which is located between the plurality of inorganic material portions.

[0061] Note 22. The display device according to Note 21, wherein the organic material portions are configured as a plurality, and the plurality of organic material portions and the plurality of inorganic material portions are arranged alternately and repeatedly.

[0062] Note 23. The display device according to Note 22, wherein the width of each of the plurality of organic material portions gradually decreases in the direction from the central portion of the piezoelectric vibrating portion to the two peripheries.

[0063] Appendix 24. The display device according to Appendix 1, wherein the printed circuit board comprises:

[0064] A first printed circuit board, the first printed circuit board including a first periphery connected to the display panel;

[0065] A second printed circuit board, wherein the second printed circuit board is connected to a first portion of the first printed circuit board via a first connecting member, and a third vibration device is disposed at the second printed circuit board; and

[0066] A third printed circuit board is connected to a second part of the first printed circuit board via a second connecting member, and a fourth vibration device is disposed on the third printed circuit board.

[0067] Note 25. The display device according to Note 24, wherein the first connecting member and the second connecting member are bent to the front and rear surfaces of the first printed circuit board.

[0068] Note 26. The display device according to Note 24, wherein the second printed circuit board and the third printed circuit board are configured to face the display panel in a left-front direction or in a right-front direction.

[0069] Note 27. The display device according to Note 24, wherein,

[0070] The first printed circuit board is configured as a plurality of such boards, and the plurality of first printed circuit boards are arranged at certain intervals along the first portion of the display panel.

[0071] The second printed circuit board and the third printed circuit board are respectively disposed on the first printed circuit boards located on both sides among the plurality of first printed circuit boards.

[0072] Note 28. The display device according to Note 27, wherein,

[0073] The second printed circuit board is disposed on the left side of the first printed circuit board in the forward direction relative to the display panel, and...

[0074] The third printed circuit board is disposed on the right side of the first printed circuit board on the right side among the plurality of first printed circuit boards.

[0075] Note 29. The display device according to Note 24, wherein,

[0076] Each of the third and fourth vibration devices includes a piezoelectric vibration component, and

[0077] The piezoelectric vibration component includes:

[0078] Multiple inorganic material components exhibiting piezoelectric properties; and

[0079] The organic material portion between the plurality of inorganic material portions.

[0080] Note 30. The display device according to Note 1 further includes:

[0081] A fourth component, the fourth component being disposed on the rear surface of the printed circuit board; and

[0082] The fifth component is disposed on the rear surface of the fourth component;

[0083] The second vibration device is located at the fifth component.

[0084] Note 31. The display device according to Note 30, wherein the printed circuit board is configured to vibrate based on the vibration of the second vibration device to generate sound, and the vibration of the second vibration device is transmitted to the printed circuit board along the fourth member and the fifth member.

[0085] Note 32. The display device according to Note 30, wherein the fourth component comprises:

[0086] A first region, located on the rear surface of the printed circuit board; and

[0087] The second region extends from the first region, and the fifth component is disposed in the second region.

[0088] Note 33. The display device according to Note 32, wherein the fifth component comprises:

[0089] The first part is disposed on the rear surface of the first region of the fourth member;

[0090] The second part, the second part being disposed on the rear surface of the second region of the fourth member; and

[0091] The third part is located between the first part and the second part, and the second vibration device is disposed at the third part.

[0092] Note 34. The display device according to Note 33, wherein the third portion has curvature and is recessed toward the fourth member.

[0093] Note 35. The display device according to Note 34, wherein the second vibration device is configured to have a shape corresponding to the shape of the third part.

[0094] Note 36. The display device according to Note 33, wherein the third part is configured to vibrate based on the vibration of the second vibration device to generate sound.

[0095] Note 37. The display device according to Note 33, wherein the third part further includes a second pattern.

[0096] Note 38. The display device according to Note 37, wherein the second pattern includes a plurality of grooves arranged in a line shape, a strip shape, or a diagonal shape.

[0097] Note 39. The display device according to Note 37, wherein,

[0098] The second pattern comprises multiple groups, and

[0099] One or more of the depth, width, and spacing of the second pattern included in one of the multiple groups are the same, and one or more of the depth, width, and spacing of the second pattern included in different groups of the multiple groups are different. Attached Figure Description

[0100] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this application. They illustrate embodiments of the present disclosure and, together with the description, serve to explain the various principles of the present disclosure.

[0101] Figure 1 An example of a display device according to an embodiment of the present disclosure is shown.

[0102] Figure 2 This is an example Figure 1 The diagram shows a plan view of the front surface of the display device.

[0103] Figure 3 It is along Figure 2 The cross-sectional view taken by line I-I' is shown.

[0104] Figure 4 and Figure 5 This is an example Figure 1 A plan view of another embodiment of the front surface of the display device shown.

[0105] Figure 6 It is along Figure 2 Another cross-sectional view taken from line I-I'.

[0106] Figures 7 to 10 This is an example where the board is set up. Figure 1 A plan view of an embodiment of the printed circuit board of the display device shown.

[0107] Figure 11 and Figure 12 This example illustrates that the first pattern is set in... Figure 1 A plan view of an embodiment of the printed circuit board of the display device shown.

[0108] Figure 13 A display device according to another embodiment of the present disclosure is illustrated.

[0109] Figure 14 This is an example Figure 13 The diagram shows a plan view of the front surface of the display device.

[0110] Figure 15 This is an example Figure 14 The diagram shows a plan view of the back surface of the printed circuit board.

[0111] Figure 16 Examples are given as follows: Figure 15 The first state of the printed circuit board as seen in direction A.

[0112] Figure 17 Examples are given as follows: Figure 15 The second state of the printed circuit board as seen in direction A.

[0113] Figure 18 Examples are given as follows: Figure 15 The third state of the printed circuit board seen in direction A.

[0114] Figure 19 This is an example Figure 13 Another plan view of the front surface of the display device shown.

[0115] Figure 20 This is an example Figure 19 A plan view of an embodiment of the rear surface of the printed circuit board shown.

[0116] Figure 21 This is a plan view illustrating the front surface of a display device according to another embodiment of the present disclosure.

[0117] Figure 22 Examples Figure 21 The front surface of the PCB.

[0118] Figure 23 Examples Figure 21 The back surface of the PCB.

[0119] Figure 24 It is along Figure 22 The cross-sectional view taken from line II-II'.

[0120] Figure 25 This is an example Figure 21 A figure showing another embodiment of the front surface of a printed circuit board.

[0121] Figure 26 It is along Figure 25 The cross-sectional view taken from line III-III'.

[0122] Figure 27 Examples Figure 21 It is part of the supporting structure of the display device.

[0123] Figures 28 to 30 This is a plan view illustrating a third part of an embodiment according to the present disclosure.

[0124] Figures 31 to 34 This is a side view illustrating a third part of another embodiment of the present disclosure.

[0125] Figure 35 A vibration device according to an embodiment of the present disclosure is illustrated.

[0126] Figure 36 A vibration device according to another embodiment of the present disclosure is illustrated.

[0127] Figure 37 A vibration device according to another embodiment of the present disclosure is illustrated.

[0128] Figure 38 A vibration device according to another embodiment of the present disclosure is illustrated.

[0129] Throughout the accompanying drawings and detailed description, unless otherwise described, the same reference numerals should be understood to refer to the same elements, features, and structures. For clarity, illustrative purposes, the relative dimensions and descriptions of these elements may be exaggerated. Detailed Implementation

[0130] Reference will now be made in detail to embodiments of this disclosure, examples of which are illustrated in the accompanying drawings. In the following description, detailed descriptions of well-known functions or configurations relevant to this document will be omitted where such obscuration unnecessarily obscures the essential points of the inventive concept. The described progression of processing steps and / or operations is exemplary; however, the order of steps and / or operations is not limited to the order set forth herein and can be varied as is known in the art, except that the steps and / or operations must occur in a specific order. Similar reference numerals always denote similar elements. The names of corresponding elements used in the following description are chosen merely for ease of writing and may therefore differ from those used in actual products.

[0131] The advantages and features of this disclosure, and its implementation methods, will be illustrated by the following description of embodiments with reference to the accompanying drawings. However, this disclosure may be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0132] The shapes, dimensions, scales, angles, and quantities disclosed in the accompanying drawings used to describe embodiments of this disclosure are merely examples, and therefore, this disclosure is not limited to the illustrated details. Similar reference numerals always refer to similar elements. In the following description, detailed descriptions that determine relevant known functions or configurations will be omitted where such obscurity unnecessarily obscures the essential points of this disclosure. Where the terms “comprising,” “having,” and “including” are used in this specification, another component may be added unless “only” is used. Unless otherwise stated, singular terms may include plural forms.

[0133] When interpreting a component, it is interpreted as including a range of errors or tolerances, even though there is no explicit description of such a range of errors or tolerances.

[0134] When describing positional relationships, for example, when the positional relationship between two components is described as "on," "above," "below," and "next to," one or more other components may be placed between the two components unless more restrictive terms such as "only" or "directly" are used.

[0135] When describing temporal relationships, such as when time sequence is described as “after,” “following after,” “next,” and “before,” discontinuous situations may be included unless more restrictive terms such as “only,” “immediately,” or “directly” are used.

[0136] It will be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this disclosure, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0137] In describing the elements of this disclosure, the terms “first,” “second,” “A,” “B,” “(a),” “(b),” etc., may be used. These terms are intended to distinguish the corresponding element from other elements, and the basis, order, or number of the corresponding elements shall not be limited by these terms. Unless otherwise stated, the expression “connected,” “joined,” or “adhered” to another element or layer means that the element or layer may be directly connected or adhered to another element or layer, or indirectly connected or adhered to another element or layer, wherein one or more intermediate elements or layers are “disposed” between the elements or layers.

[0138] The term "at least one" should be understood to include any and all combinations of one or more of the associated listed items. For example, "at least one or more of the first element, the second element, and the third element" means a combination of all elements derived from two or more of the first element, the second element, and the third element, as well as the first element, the second element, or the third element. In the description of embodiments, when a structure is described as being "above" or "below" another structure, the description should be interpreted to include cases where the structures are in contact with each other and cases where a third structure is disposed therebetween. The dimensions and thicknesses of each element shown in the figures are given for the convenience of description only, and embodiments of this disclosure are not limited thereto unless otherwise stated.

[0139] In this disclosure, examples of display devices may include narrowly defined display devices such as organic light-emitting display (OLED) modules or liquid crystal modules (LCMs), which include a display panel and a driver for driving the display panel. Furthermore, examples of display devices may include assemblies (or assemblies of equipment) or electronic devices that are complete products (or end products) including LCMs or OLED modules, such as notebook computers, TVs, computer monitors, equipment including automotive equipment or other types of equipment for vehicles, or mobile electronic devices (such as smartphones or tablets).

[0140] Therefore, in this disclosure, examples of display devices may include display devices in the narrow sense, such as LCM or OLED modules, as well as complete sets of equipment as end consumer devices or application products including LCM or OLED modules.

[0141] In some implementations, an LCM or OLED module including a display panel and a driver may be referred to as a narrowly defined display device, and an electronic device that is a final product including an LCM or OLED module may be referred to as an assembly. For example, a narrowly defined display device may include a display panel such as an LCD or OLED, and a source printed circuit board (PCB) as a controller for driving the display panel. An assembly may also include an assembly PCB, which is an assembly controller electrically connected to the source PCB to control the assembly as a whole.

[0142] The display panel used in the embodiments of this disclosure can be any type of display panel, such as a liquid crystal display panel, an organic light-emitting diode (OLED) display panel, and an electroluminescent display panel; however, the embodiments are not limited to a specific display panel vibrating to output sound by a vibration device according to the embodiments of this disclosure. Furthermore, the shape or size of the display panel used in the display device according to the embodiments of this disclosure is not limited.

[0143] For example, if the display panel is a liquid crystal display panel, the display panel may include multiple gate lines, multiple data lines, and multiple pixels respectively disposed at multiple pixel regions defined by the intersection of the gate lines and the data lines. Furthermore, the display panel may include: an array substrate including thin-film transistors (TFTs) as switching elements for adjusting the light transmittance of the multiple pixels; an upper substrate including a color filter and / or a black matrix; and a liquid crystal layer disposed between the array substrate and the upper substrate.

[0144] When the display panel is an organic light-emitting display panel, it may include multiple gate lines, multiple data lines, and multiple pixels respectively disposed in multiple pixel regions defined by the intersections of the gate lines and data lines. Furthermore, the display panel may include: an array substrate including TFTs as elements for selectively applying voltage to each pixel; an organic light-emitting device layer on the array substrate; and an encapsulation substrate disposed on the array substrate to cover the organic light-emitting device layer. The encapsulation substrate can protect the TFTs and the organic light-emitting device layer from external impacts and can prevent water or oxygen from penetrating into the organic light-emitting device layer. Additionally, the layer disposed on the array substrate may include an inorganic light-emitting layer (e.g., a nanoscale material layer, quantum dots, a light-emitting layer, etc.). As another example, the layer disposed on the array substrate may include a micro-light-emitting diode.

[0145] The display panel may also include a backing, such as a metal plate, attached to the display panel. However, the implementation is not limited to a metal plate, and the display panel may include another structure made of a different material to replace the metal plate.

[0146] Features of the various embodiments of this disclosure may be linked or combined with each other in part or in whole, and may interoperate with each other in various ways and be technically driven, as will be fully understood by those skilled in the art. Embodiments of this disclosure may be performed independently of each other or may be performed together in an interdependent relationship.

[0147] In the following, 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 differs from the actual scale, and therefore the scope is not limited to the scale shown in the drawings.

[0148] The display device according to this disclosure will be described in detail below with reference to the accompanying drawings.

[0149] Figure 1 An example of a display device according to an embodiment of the present disclosure is shown. Figure 2 This is an example Figure 1 The diagram shows a plan view of the front surface of the display device, and Figure 3 It is along Figure 3 The cross-sectional view taken by line I-I' is shown.

[0150] Reference Figures 1 to 3 According to embodiments of the present disclosure, the display device 1 can output sound SW in one or more directions based on the vibration of the elements included in the display device 1. For example, the display device 1 can output a first sound SW1 in the forward direction FD of the display panel 100, and can output a second sound SW2 in the forward-upward direction FUD (a direction that is diagonally upward relative to the area facing forward of the display panel 100 and about the display panel 100).

[0151] For example, display device 1 can output a first sound SW1 generated by using display panel 100 as a vibrating plate for generating sound, and can output a second sound SW2 generated by using printed circuit board (PCB) 330 as a vibrating plate for generating sound. According to embodiments of this disclosure, display device 1 can output the first sound SW1 and the second sound SW2 simultaneously or sequentially.

[0152] Therefore, the display device 1 according to the embodiments of the present disclosure can output sound SW in one or more directions, so that the user (viewer or listener) can view the image in a surround sound environment, thereby enhancing the user's sense of immersion.

[0153] The display device 1 according to embodiments of the present disclosure may include a display panel 100, a first component 400, a panel driving circuit section 300, a second component 500, a third component 200, and a vibration device 600. For example, the display device 1 may include one or more vibration devices 600. For example, one or more vibration devices 600 may include one or more first vibration devices 610 or one or more second vibration devices 630. One or more vibration devices 600 may include one or more vibration devices, but the number of vibration devices is not limited thereto. For example, the vibration device may be used as a vibration device.

[0154] The display panel 100 can display images, such as electronic or digital images. For example, the display panel 100 can output light to display images.

[0155] The display panel 100 can vibrate based on the vibration of a first vibration device 610 disposed at the rear surface of the display panel 100 to generate a first sound SW1 in the forward direction FD of the display panel 100. For example, the display panel 100 can generate a first sound SW1 having a first tone vocal band, and the first sound SW1 of the first tone vocal band can have one or more frequencies, the one or more frequencies having a low tone vocal band, a mid-low tone vocal band, a mid-high tone vocal band, and a high tone vocal band. In the case where the display panel 100 generates the first sound SW1 by vibrating through a plurality of first vibration devices 610, the display panel 100 can generate the first sound SW1 based on the vibration of the plurality of first vibration devices 610, the first sound SW1 having frequencies of different tone vocal bands that can be subdivided for each region in the first tone vocal band.

[0156] According to embodiments of this disclosure, the display panel 100 may be a curved display panel, or it may be any type of display panel, such as a liquid crystal display panel, an organic light-emitting display panel, a quantum dot light-emitting display panel, a micro light-emitting diode display panel, an electrophoretic display panel, and an electrowetting display panel. According to another embodiment of this 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 quantum dot light-emitting display, a flexible micro light-emitting diode display panel, a flexible electrophoretic display panel, or a flexible electrowetting display panel, but the embodiments of this disclosure are not limited thereto. According to another embodiment of this disclosure, the display panel 100 may be a display panel with an integrated touch panel. For example, a display panel with an integrated touch panel may include a touch panel attached to the display panel, or it may include a touch electrode layer disposed on the display panel.

[0157] The display panel 100 according to embodiments of the present disclosure may include a display area and a non-display area. The display area displays an image based on the driving of a plurality of pixels arranged on a substrate, and the non-display area surrounds the display area. For example, in the case of a borderless (or borderless) structure, the display panel 100 may be implemented such that the entire front surface of the substrate is implemented as a display area without any non-display area. For example, the display panel 100 may be a transparent display panel, which includes a light-transmitting portion disposed at at least one of the plurality of pixels.

[0158] The display panel 100 according to embodiments of the present disclosure may include a pixel array layer (or display unit) configured to include an anode electrode, a cathode electrode, and a light-emitting device layer. The display panel 100 may be configured to display images based on the structure of the pixel array layer in a type such as top-emitting, bottom-emitting, or double-sided-emitting. For example, in the top-emitting type, an image may be displayed by outputting visible light generated from the pixel array layer to a forward region in the front portion of the base substrate of the display panel 100. In the bottom-emitting type, an image may be displayed by outputting visible light generated from the pixel array layer to a rearward region in the rear portion of the base substrate of the display panel 100.

[0159] For example, the light-emitting device layer may include an organic light-emitting layer or a miniature light-emitting diode device connected to each of the anode and cathode electrodes. The miniature light-emitting diode device may be a light-emitting diode implemented as an integrated circuit (IC) 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 electrodes may be collectively connected to the light-emitting device layer disposed at each pixel region.

[0160] The display panel 100 according to embodiments of the present disclosure may include a bent portion that can be bent or flexed to have a curved shape or a certain radius of curvature.

[0161] The bent portion of the display panel 100 can be implemented in at least one of a peripheral (or edge) and another peripheral of the display panel 100 that are parallel to each other. One peripheral and / or the other peripheral of the display panel 100 where the bent portion is implemented may include only the non-display area, or may include both the peripheral (or edge) of the display area and the non-display area. For example, a display panel 100 including a bent portion implemented by bending the non-display area may have a one-sided bezel bending structure or a two-sided bezel bending structure. Furthermore, a display panel 100 including a bent portion implemented by bending the peripheral (or edge) of the display area and the non-display area may have a one-sided active bending structure or a two-sided active bending structure.

[0162] The third component 200 can be disposed on the front surface of the display panel 100 by a bonding process using an adhesive component (or a transparent adhesive component). The adhesive component may include, but is not limited to, pressure-sensitive adhesive (PSA), optically clear adhesive (OCA), or optically clear resin (OCR).

[0163] The third component 200 according to embodiments of this disclosure may include a transparent plastic material, a glass material, or a tempered glass material. For example, the third component 200 may include one of sapphire glass and Gorilla Glass, or a laminate thereof. As another example, the third component 200 may include a transparent plastic material such as polyethylene terephthalate (PET). The third component 200 may include tempered glass based on scratch resistance and transparency. For example, the third component 200 may be referred to as a front component, front structure, front window, cover window, glass window, cover screen, screen cover, or window glass, but embodiments of this disclosure are not limited thereto.

[0164] The third component 200 can form the frontmost structure of the display device 1. For example, the third component 200 can protect the screen of the display panel 100. The third component 200 can be disposed on the front surface of the display panel 100. For example, the third component 200 can cover the front surface of the display panel 100, thereby protecting the display panel 100 from external impacts. In addition, the third component 200 can vibrate together with the vibration of the display panel 100 to generate a first sound SW1.

[0165] For example, the third component 200 may include a transparent area overlapping the display area of ​​the display panel 100, and a light-blocking area overlapping the non-display area of ​​the display panel 100. The light-blocking area may cover the non-display area of ​​the display device 1 that does not display an image, as well as the non-display area of ​​the display panel 100. The third component 200 according to embodiments of the present disclosure may have a polygonal shape including a rectangular or square shape, or a non-polygonal shape including at least one or more curved sides.

[0166] The panel driving circuit section 300 can be disposed between the display panel 100 and the first component 400, and between the first component 400 and the second component 500. The panel driving circuit section 300 can be connected to the display panel 100. For example, the panel driving circuit section 300 can be configured to be spaced apart from one side of the display panel 100 and can be connected to a pad portion disposed on a first peripheral portion (or a peripheral portion) of the display panel 100. The panel driving circuit section 300 can be implemented to display images in multiple pixels disposed on the display panel 100.

[0167] The panel driving circuit section 300 according to embodiments of the present disclosure may include at least one or more flexible circuit films 310, a printed circuit board (PCB) 330, and a driving control circuit section 350. For example, the flexible circuit film 310 may be referred to by other terms such as chip on film (COF), flexible printed circuit (FPC), COF circuit, and chip on flexible printed circuit.

[0168] One side of each of at least one or more flexible circuit films 310 may be connected to a pad portion disposed on a first peripheral portion (or a peripheral portion) of the display panel 100. The plurality of pad portions may be arranged at intervals in a first direction (or the X-axis direction). Each of at least one or more flexible circuit films 310 may be respectively connected to a plurality of pad portions spaced apart therebetween, and thus may be arranged at intervals in the first direction (or the X-axis direction). For example, one side of each of at least one or more flexible circuit films 310 may be disposed at (or connected to) a pad portion disposed on the display panel 100 by a film attachment process using an anisotropic conductive film.

[0169] Each of at least one or more flexible circuit films 310 may have its other side connected to one side of the PCB 330. For example, at least one or more flexible circuit films 310 may be connected to a plurality of terminals 331 disposed on a first peripheral portion (or a peripheral portion) of the PCB 330. For example, the plurality of terminals 331 may be disposed on a surface facing the front area relative to the display device 1 (or the front surface) or on a surface opposite the front surface (or the rear surface or the back side surface).

[0170] PCB 330 may be commonly connected to each of at least one or more flexible circuit films 310. PCB 330 according to embodiments of the present disclosure may include a plurality of terminals 331 disposed at its first peripheral portion, and the other side of each of at least one or more flexible circuit films 310 may be disposed at (or connected to) the plurality of terminals 331 by a film attachment process using an anisotropic conductive film.

[0171] According to embodiments of the present disclosure, the PCB 330 can vibrate based on the vibration of a second vibration device 630 disposed on the rear surface of the PCB 330 to generate a second sound SW2. For example, the PCB 330 can generate a second sound SW2 having second-tone vocal bands, and the second sound SW2 having second-tone vocal bands can have one or more frequencies, which include low-tone vocal bands, mid-low-tone vocal bands, mid-high-tone vocal bands, and high-tone vocal bands. In the case where the PCB 330 is vibrated by multiple second vibration devices 630 to generate the second sound SW2, the PCB 330 can generate a second sound SW2 with different frequencies for each region based on the vibration of the multiple second vibration devices 630. According to embodiments of the present disclosure, the PCB 330 can generate a second sound SW2 with a frequency of vocal bands different from the frequency of the first sound SW1, or it can generate a second sound SW2 with a frequency of vocal bands the same as the frequency of the first sound SW1.

[0172] According to embodiments of the present disclosure, the PCB 330 can be spaced apart from the display panel 100 in the second direction Y, and can be disposed on one side of the display panel 100 without overlapping it. For example, the first peripheral portion of the display panel 100 and the first peripheral portion of the PCB 330 can be spaced apart from each other and can not overlap. For example, the separation distance between the display panel 100 and the PCB 330 can be changed in various ways.

[0173] Therefore, PCB 330 can be disposed on one side of display panel 100, and thus, since there is no need for a process of bending (or folding) PCB 330 toward the rear surface of display panel 100, the number of processes can be reduced, thereby realizing a display device 1 with a thin profile.

[0174] For example, when the PCB 330 is set at a certain angle θ relative to the virtual extension line (first virtual extension line) of the first peripheral portion of the display panel 100, the first peripheral portion of the display panel 100 and the first peripheral portion of the PCB 330 can be spaced apart from each other without contacting each other.

[0175] The angle θ between the display panel 100 and the PCB 330 can be adjusted in various ways. When the angle θ between the virtual extension line (second virtual extension line) of the first peripheral portion of the PCB 330 and the first virtual extension line is 0 degrees, the second sound SW2 generated based on the vibration of the PCB 330 can travel in the forward direction of the display panel 100, and when the angle θ between the first virtual extension line and the second virtual extension line is greater than 90 degrees, the second sound SW2 generated based on the vibration of the PCB 330 can travel in the rearward direction of the display panel 100. Therefore, the PCB 330 according to the embodiments of this disclosure can be configured such that the angle θ between the first virtual extension line and the second virtual extension line is greater than 0 degrees and not greater than 90 degrees.

[0176] Therefore, since the PCB 330 according to the embodiment of this disclosure is arranged in the forward-upward direction of the display panel 100, the display device 1 can output a second sound SW2 generated by the vibration of the PCB 330 in the forward-upward direction of the display panel 100, and the output second sound SW2 can be reflected by the upper structure (e.g., ceiling) in the space in which the display device 1 is arranged, and can travel towards the user, and thus the user can watch images in a surround sound environment, thereby enhancing the user's immersive experience.

[0177] The drive control circuit section 350 can be mounted on the PCB 330. For example, the drive control circuit section 350 can be mounted on the front or rear surface of the PCB 330. For example, the drive control circuit section 350 can be mounted on the same surface as the surface on which the terminal 331 is disposed, or it can be mounted on a different surface from the surface on which the terminal 331 is disposed.

[0178] For example, the drive control circuit section 350 may include a timing control circuit and a voltage generation circuit, but the embodiments of this disclosure are not limited thereto.

[0179] The timing control circuit can receive timing synchronization signals and video data provided by the display host system. For example, the timing synchronization signals may include vertical synchronization signals, horizontal synchronization signals, data enable signals, and master clock signals.

[0180] The timing control circuit can generate a gating control signal for controlling the driving timing of the gating drive circuit and a data control signal for controlling the driving timing of each of the multiple data drive integrated circuits, based on the timing synchronization signal.

[0181] The display host system may include a motherboard, various circuits mounted on the motherboard, various storage media, peripheral devices, a keyboard, and a power supply. The various circuits mounted on the motherboard may include a central control circuit for processing various information, an image processing circuit for processing data under the control of the central control circuit, and a sound processing circuit for processing sound under the control of the central control circuit.

[0182] The display host system can process various information, generate timing synchronization signals and video data to provide timing synchronization signals and video data to the drive control circuit section 350 via PCB 330, and can generate drive signals, including sound signals or haptic feedback signals, to provide drive signals to PCB 330. For example, the sound signal may or may not be synchronized with the video data. The voltage generation circuit can generate various drive voltages required to drive the display device 1.

[0183] According to embodiments of the present disclosure, the first component 400 may accommodate the display panel 100 and the panel driving circuit section 300. For example, the first component 400 may include a first structure 410 and a second structure 430. For example, the first component 400 may be referred to as a front cover, but embodiments of the present disclosure are not limited thereto.

[0184] The first structure 410 may be a rear structure disposed on the rear surface of the display panel 100 and the rear surface of the panel driving circuit section 300. For example, the first structure 410 may be a bottom structure, but the embodiments of this disclosure are not limited thereto. For example, the first structure 410 may support the display panel 100 and the panel driving circuit section 300. The first structure 410 may be spaced at a predetermined distance from the vibration device 600, so as not to physically contact the vibration device 600 when the vibration device 600 vibrates.

[0185] The second structure 430 may be a side structure disposed on the side surface of the display device 1. For example, the second structure 430 may be disposed around the first structure 410 and may cover one or more side surfaces of the display panel 100.

[0186] The first structure 410 according to an embodiment of the present disclosure may include a plurality of recesses 411a and 413a for receiving (or accommodating) the vibration device 600. The recesses 411a and 413a may be disposed at a first surface (or top surface or inner surface) of the first structure 410, thereby facing the vibration device 600. Therefore, the vibration device 600 can reduce the gap between the first structure 410 and the display panel 100, and the gap in which the vibration device 600 is received in the recesses 411a and 413a can be reduced, thus reducing the thickness of the display device 1.

[0187] The first structure 410 according to the embodiments of the present disclosure may include a first-1 structure 411 configured to correspond to the display panel 100 and a first-2 structure 413 extending from the first-1 structure 411 and configured to correspond to the panel driving circuit section 300. For example, the PCB 330 may be provided in the area corresponding to the first-2 structure 413.

[0188] The first-second structure 413 can be arranged at an angle relative to the first-first structure 411 in the upward-facing direction of the display panel 100 from one side (or a first portion) of the first-second structure 413. For example, the first structure 410 may include a bent portion 450 disposed between the first-first structure 411 and the first-second structure 413 facing inward toward the display device 1. For example, according to an embodiment of the present disclosure, the first structure 410 may cover the lower part of the display panel 100 and may be bent and extended to cover the panel driving circuit section 300. The first structure 410 may accommodate the display panel 100 and the panel driving circuit section 300 together with the second structure 430. For example, the degree of bending of the bent portion 450, for example, the angle between the first-first structure 411 and the first-second structure 413, may correspond to the angle θ between the display panel 100 and the PCB 330.

[0189] The second component 500 can be configured to cover the front peripheral portion of the display device 1. For example, the second component 500 can conceal the panel driving circuit section 300, extend to cover the upper part of the first component 400 and a periphery of the front surface of the display panel 100, and protect the panel driving circuit section 300 and the display panel 100. For example, the second component 500 can be connected or coupled to the second structure 430 of the first component 400 by a fastening member such as a hook, and thus can cover the area of ​​the display panel 100 other than the display area. For example, the second component 500 can be a portion of the second structure 430 bent and extended to the front surface of the display device 1. For example, the second component 500 can be referred to as a rear cover, rear surface cover, rear surface component, or rear component, but embodiments of this disclosure are not limited thereto.

[0190] In the second component 500 according to an embodiment of the present disclosure, one or more sound emission holes may be provided in an area overlapping with the second vibration device 630 provided on the PCB 330 of the panel drive circuit section 300. For example, one or more sound emission holes may be arranged at intervals in the area overlapping with the second vibration device 630. One or more sound emission holes may transmit a second sound SW2 generated by the vibration of the second vibration device 630.

[0191] The first vibration device 610 may be provided at least one or more on the rear surface of the display panel 100. For example, the first vibration device 610 may vibrate to cause the display panel 100 to vibrate based on a sound signal (or voice signal) transmitted thereto, thereby generating a first sound SW1. For example, the first vibration device 610 may vibrate based on a sound signal (or voice signal) transmitted through the flexible circuit film 310.

[0192] According to embodiments of the present disclosure, the first vibration device 610 can be disposed on the rear surface of the display panel 100 using a first adhesive member 710, and the method of arranging the first vibration device 610 is not limited to embodiments of the present disclosure. For example, one or more first vibration devices 610 can be disposed on the rear surface of the display panel 100, and multiple first vibration devices 610 can be disposed at at least one or more locations in the display area and non-display area of ​​the display panel 100. According to embodiments of the present disclosure, at least one or more first vibration devices 610 can generate a first sound SW1 with the same pitch frequency of the vocal cords in each area of ​​the display panel 100, or can generate a first sound SW1 with different pitch frequencies of the vocal cords in each area of ​​the display panel 100.

[0193] For example, a first sound SW1 having a frequency of a first tone vocal band can be output from the central portion of the display panel 100 in the forward direction, and a first sound SW1 having a frequency of a second tone vocal band higher than the first tone vocal band can be output from the peripheral portion of the display panel 100 in the forward direction.

[0194] The second vibration device 630 may be provided at least one or more on the rear surface of the PCB 330. For example, the second vibration device 630 may vibrate based on an audio signal (or speech signal) transmitted thereto, thereby causing the PCB 330 to vibrate and generating a second sound SW2. For example, the second vibration device 630 may vibrate based on an audio signal (or speech signal) transmitted through the PCB 330.

[0195] According to embodiments of this disclosure, the second vibration device 630 can be disposed on the rear surface of the PCB 330 using a second adhesive member 730, and the method of arranging the second vibration device 630 is not limited to embodiments of this disclosure. For example, at least one or more second vibration devices 630 can be disposed on the rear surface of the PCB 330, and at least one or more second vibration devices 630 can generate a second sound SW2 with the same pitch frequency of the vocal bands in each region of the PCB 330, or can generate a second sound SW2 with different pitch frequencies of the vocal bands in each region of the PCB 330.

[0196] Each of the first vibration device 610 and the second vibration device 630 according to embodiments of the present disclosure can be implemented as a film type and can include a piezoelectric device comprising a piezoelectric material layer having a piezoelectric effect (or inverse piezoelectric properties).

[0197] The piezoelectric material layer may include a piezoelectric material that vibrates based on an electric field. Here, the piezoelectric material may have the following characteristics: pressure or torsion is applied to the crystal structure by an external force, a potential difference is generated due to dielectric polarization caused by the relative positional change of positive (+) ions and negative (-) ions, and vibration is generated by an electric field based on the voltage applied thereto.

[0198] The piezoelectric material layer according to embodiments of this disclosure may include a piezoelectric material comprising a polymer material, a piezoelectric material comprising a thin film material, a piezoelectric material comprising a composite material, or a piezoelectric material comprising single-crystal ceramic or polycrystalline ceramic. The piezoelectric material comprising a polymer material according to embodiments of this disclosure may include polyvinylidene fluoride (PVDF), poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFe)), or poly(vinylidene fluoride-tetrafluoroethylene) (P(VDFTeFE)). The piezoelectric material comprising a thin film material according to embodiments of this disclosure may include ZnO, CdS, or AlN. The piezoelectric material comprising a composite material may include lead zirconate titanate (PZT)-PVDF, PZT-silicone rubber, PZT-epoxy resin, PZT-foam polymer, or PZT-foam polyurethane. Piezoelectric materials comprising monocrystalline ceramics according to embodiments of the present disclosure may include aluminum phosphate (e.g., alumina, α-AlPO4), silicon dioxide (e.g., α-SiO2), lithium niobate (LiNbO3), terbium molybdate (Tb2(MoO4)3), lithium tetraborate (Li2B4O7), or ZnO. Piezoelectric materials comprising polycrystalline ceramics according to embodiments of the present disclosure may include PZT-based materials, PT-based materials, PZT-composite perovskite, or barium titanate (BaTiO3).

[0199] The first adhesive member 710 can be disposed between the rear surface of the display panel 100 and the surface (or first surface or front surface) of the first vibration device 610 facing the display panel 100, and can attach the display panel 100 to the first vibration device 610.

[0200] The second adhesive member 730 can be disposed between the rear surface of the PCB 330 and the surface of the second vibration device 630 facing the PCB 330 (or the first surface or the front surface), and can attach the PCB 330 to the second vibration device 630.

[0201] The third adhesive member 750 may be disposed between the rear surface of the second member 500 and the front surface of the PCB 330, and may attach the second member 500 to the PCB 330. For example, the third adhesive member 750 may attach a second peripheral portion (or a portion opposite to the first peripheral portion) of the PCB 330 to the second member 500.

[0202] The first to third adhesive members 710, 730, and 750 according to embodiments of the present disclosure may include an adhesive or double-sided tape comprising an adhesive layer with good adhesion or bonding strength. For example, the adhesive layer may include epoxy resin, acrylic, silicone resin, or polyurethane, but embodiments of the present disclosure are not limited thereto. The adhesive layer may also include additives such as tackifiers, wax components, or antioxidants.

[0203] Figure 4 and Figure 5 This is an example Figure 1 A plan view of another embodiment of the front surface of the display device shown.

[0204] exist Figure 4 and Figure 5 The display device 1 shown can be changed in Figure 1 The number of PCBs and the second vibration device described above in the display device 1 shown is used to achieve this. Therefore, in the following text, reference will be made to... Figure 4 and Figure 5 To describe display device 1, and with Figure 1 Descriptions of display device 1 that are identical or similar are omitted or will be briefly given below.

[0205] Reference Figure 4 The display device 1 may include a PCB 330 and multiple second vibration devices 630-1 and 630-2. Figure 4 The illustration shows two second vibration devices 630-1 and 630-2 disposed at a PCB 330, but the number of second vibration devices can be three or more. For example, multiple second vibration devices 630-1 and 630-2 can generate a second sound SW2 with the same pitch frequency in each region of the PCB 330, or can generate a second sound SW2 with different pitch frequencies in each region of the PCB 330.

[0206] Reference Figure 5 The display device 1 may include multiple PCBs 330-a and 330-b and multiple second vibration devices 630-1 to 630-3. Figure 5In the illustration, a second vibration device 630-1 is provided at one of two PCBs 330-a and 330-b, namely PCB 330-a and 330-b, and two second vibration devices 630-2 and 630-3 are provided at the other PCB 330-b. Therefore, a different number of second vibration devices can be provided at each of the multiple PCBs, but the embodiments of this disclosure are not limited thereto. For example, one second vibration device can be provided at each of the multiple PCBs, and the same number of second vibration devices can be provided on each of the multiple PCBs in multiple ways.

[0207] For example, multiple second vibration devices 630-1 to 630-3 can generate a second sound SW2 with the same pitch band frequency in each region of multiple PCBs 330-a and 330-b, or can generate a second sound SW2 with a different pitch band frequency in each region of PCB 330.

[0208] Reference Figure 5 When the display device 1 includes multiple PCBs 330-a and 330-b, each of the multiple PCBs 330-a and 330-b can be independently disposed on one side of the display panel 100, and the angle between each of the multiple PCBs 330-a and 330-b and the display panel 100 can be the same or different.

[0209] Figure 6 It is along Figure 2 Another cross-sectional view taken from line I-I'.

[0210] Figure 3 The display device 1 may include a bent portion 450 formed between the first-1 structure 411 and the first-2 structure 413, and Figure 6 The display device 1 may include a hinge portion 470 formed between the first-1 structure 411 and the first-2 structure 413. In the following text, reference will be made to... Figure 6 To describe display device 1, and with Figure 3 Descriptions of display device 1 that are identical or similar are omitted or will be briefly given below.

[0211] Reference Figure 6The hinge portion 470 can be disposed between the first-1 structure 411 and the first-2 structure 413. For example, one side of the first-1 structure 411 and one side of the first-2 structure 413 can be connected to the hinge portion 470. For example, one side of the first-1 structure 411 can be fixed to the hinge portion 470, and one side of the first-2 structure 413 can be configured to rotate relative to the hinge portion 470. Alternatively, one side of the first-2 structure 413 can be fixed to the hinge portion 470, and one side of the first-1 structure 411 can be configured to rotate relative to the hinge portion 470. Therefore, the angle between the first-1 structure 411 and the first-2 structure 413 can be varied based on the degree of rotation of the first-1 structure 411 or the first-2 structure 413.

[0212] Therefore, either the first-1 structure 411 or the first-2 structure 413 can be configured to rotate relative to the hinge portion 470, thus the angle between the first-1 structure 411 and the first-2 structure 413 can be changed differently. Furthermore, based on the rotation of the first-2 structure 413, the PCB 330 corresponding to the first-2 structure 413 can rotate relative to the hinge portion 470, thus the output direction of the second sound SW2 generated by the vibration of the PCB 330 can be changed differently. Therefore, by changing the output direction of the second sound SW2 generated by the vibration of the PCB 330, the first-2 structure 413 can be adjusted based on the user's position, the arrangement of the display device 1, and the spatial environment in which the display device 1 is located, thereby providing an optimal surround sound environment.

[0213] For example, the first-second structure 413 can be configured to rotate only within a certain range relative to the hinge portion 470. For example, the second member 500 can rotate based on the rotation of the first-second structure 413, and excessive rotation of the second member 500 may affect the display panel 100. Therefore, the rotation angle of the first-second structure 413 can be limited so that the first-second structure 413 rotates within a range that does not affect the display panel 100.

[0214] Furthermore, to prevent contact between the second component 500 and the display panel 100 when the second component 500 rotates based on the rotation of the first-second structure 413, the overlapping areas of the display panel 100 and the second component 500 can be spaced apart from each other. For example, the overlapping areas of the display panel 100 and the second component 500 can be spaced apart from the display panel 100 by a height, which is configured to prevent contact between the second component 500 and the display panel 100 when the first-second structure 413 rotates. Additionally, when the third component 200 is disposed on the front surface of the display panel 100, the overlapping area of ​​the third component 200 and the second component 500 can be spaced apart from the third component 200 by a gap, which is configured to prevent contact between the second component 500 and the third component 200 when the first-second structure 413 rotates.

[0215] The separation distance between the overlapping areas of the display panel 100 and the second component 500 and the separation distance between the overlapping areas of the third component 200 and the second component 500 can be adjusted differently.

[0216] Figures 7 to 10 This is an example where the board is set up. Figure 1 The diagram shows a plan view of the implementation method on the PCB of the display device. Except for board 800, which is mounted on the PCB, reference is made to this diagram. Figures 1 to 5 Apart from the PCB 330 described, other components may be the same; therefore, repeated descriptions of them are omitted or will be briefly given below.

[0217] exist Figures 7 to 10 The example shows that board 800 is located on the rear surface of PCB 330. Board 800 can be located on the front surface of PCB 330, or it can be located on both the front and rear surfaces of PCB 330.

[0218] Figure 7 and Figure 8 This is a plan view of the case where one or more terminals 331 connected to the flexible circuit film 310 and the area (mounting area) 330b on which the drive control circuit section 350 is mounted are located on the rear surface of the PCB 330. Figure 9 and Figure 10 This is a plan view showing the installation area located on the front surface of PCB 330.

[0219] Reference Figure 7 and Figure 8 The plate 800 can be set in an area other than the vibration device setting area 330a and the mounting area 330b in which the second vibration device 630 is set.

[0220] exist Figure 7 and Figure 8The example shown illustrates a mounting area 330b disposed along a first peripheral portion of PCB 330, and the number and location of mounting areas 330b are not limited to embodiments of this disclosure.

[0221] Reference Figure 9 and Figure 10 The plate 800 can be installed in an area other than the vibration device installation area 330a.

[0222] exist Figure 7 and Figure 9 An example is illustrated where a vibration device placement area 330a is provided along the second peripheral portion of the PCB 330, and... Figure 8 and Figure 10 An example is illustrated where two vibration device placement areas 330a are provided along a second peripheral portion of the PCB 330. The number and location of the vibration device placement areas 330a are not limited to the embodiments disclosed herein. For example, one or more second vibration devices 630 may be provided at each vibration device placement area 330a.

[0223] Therefore, since the board 800 is located on the rear surface of the PCB 330, the rigidity of the PCB 330 can be strengthened. Thus, the PCB 330 can be prevented from bending by the arrangement of the second vibration device, and the vibration of the second vibration device 630 can be efficiently transmitted to the PCB 330.

[0224] Furthermore, the heat generated by the vibration of the second vibration device 630 can be dissipated through the plate 800. Therefore, when the heat generated by the vibration of the second vibration device 630 is concentrated in the area near the second vibration device 630, the heat can be dissipated and the performance of the second vibration device 630 can be prevented from degrading.

[0225] Figure 11 and Figure 12 This example illustrates that the first pattern is set in... Figure 1 The diagram shows a plan view of the PCB of the display device. Except for the first pattern 900 set in the referenced above... Figures 1 to 5 Apart from the back surface of the PCB 330 described, other components may be the same, therefore, repeated descriptions of them are omitted or will be briefly given below.

[0226] Figure 11 This is a plan view of an example of setting the first pattern 900 in a vibrating device setting area. Figure 12 This is a plan view of an example of setting up a first pattern 900 in the case of providing multiple vibration device setting areas.

[0227] Based on The resonant frequency f of the material is determined by (where k is stiffness and m is mass). Therefore, when a pattern for varying the stiffness k and mass m of PCB 330 is set on PCB 330, the resonant frequency of PCB 330 can be varied, and the characteristics of the sound generated based on the vibration of PCB 330 can be controlled by controlling the resonant frequency of PCB 330.

[0228] exist Figure 11 and Figure 12 An example is illustrated where the first pattern 900 is disposed on the rear surface of the PCB 330, but the first pattern 900 may be disposed on the front surface of the PCB 330, or may be disposed on both the front and rear surfaces of the PCB 330. According to embodiments of the present disclosure, the first pattern 900 may be disposed on at least one or more peripheral portions of the PCB 330. The first pattern 900 may be referred to as a sound control pattern, a sound adjustment pattern, a sound characteristic control pattern, and a sound characteristic adjustment pattern, but embodiments of the present disclosure are not limited thereto.

[0229] like Figure 11 and Figure 12 As shown, the first pattern 900 according to the embodiments of the present disclosure can be configured to surround the second vibration device 630, but the arrangement position of the first pattern 900 is not limited thereto. For example, the first pattern 900 can be freely arranged in one or more areas of the PCB 330 without affecting the components (e.g., terminals, drive circuit control parts, wires, etc.) provided on the PCB 330.

[0230] The first pattern 900 according to embodiments of the present disclosure can be implemented to reduce the stiffness and mass of the PCB 330. For example, the first pattern 900 may include at least one or more recesses or holes. The first pattern 900 according to embodiments of the present disclosure can be implemented to increase the stiffness and mass of the PCB 330. For example, the first pattern 900 may include at least one or more protrusions. The first pattern 900 according to embodiments of the present disclosure may include two or more different forms of at least one or more recesses, holes, and protrusions.

[0231] exist Figures 7 to 10 An example is shown where board 800 is located at PCB 330, and... Figure 11 and Figure 12 An example is shown where the first pattern 900 is located at PCB 330. Figures 7 to 12 In this embodiment, board 800 and first pattern 900 can be disposed separately, but the embodiments disclosed herein are not limited thereto, and board 800 and first pattern 900 can be disposed together at PCB 330.

[0232] Figure 13 A display device according to another embodiment of the present disclosure is illustrated.

[0233] Reference Figure 13 According to another embodiment of the present disclosure, the display device 1' can output sound SW in one or more directions based on the vibration of the elements included in the display device 1'. According to another embodiment of the present disclosure, the display device 1' can output a first sound SW1 in the forward direction FD of the display panel 100, a second sound SW2 in the forward-upward direction FUD of the display panel 100, a third sound SW3 in the left-forward direction FLD of the display panel 100, and a fourth sound SW4 in the right-forward direction FRD of the display panel 100. Alternatively, according to another embodiment of the present disclosure, the display device 1' can output a first sound SW1 in the forward direction FD of the display panel 100, a second sound SW2 in the forward-upward direction FUD of the display panel 100, a third sound SW3 in the right-forward direction FRD of the display panel 100, and a fourth sound SW4 in the left-forward direction FLD of the display panel 100. For example, the output directions of the third sound SW3 and the fourth sound SW4 are changeable.

[0234] For example, display device 1' can output a first sound SW1 generated by using display panel 100 as a vibrating plate for sound generation, and can output a second sound SW2 to a fourth sound SW4 generated by using PCB 330' as a vibrating plate for sound generation. According to embodiments of this disclosure, display device 1' can output the first sound SW1 to the fourth sound SW4 simultaneously or sequentially. According to embodiments of this disclosure, display device 1' can output some sounds simultaneously and can output some sounds (or other sounds) sequentially.

[0235] Therefore, the display device 1' according to another embodiment of the present disclosure can output sound SW in one or more directions, so that the user (viewer or listener) can view the image in a surround sound environment, thereby enhancing the user's immersive experience.

[0236] Figure 13 The display device 1' shown according to another embodiment of the present disclosure can be implemented by modifying the PCB among the components of the display device 1 according to the embodiment of the present disclosure. Therefore, in the following description, repeated descriptions of components other than the PCB are omitted or will be given briefly.

[0237] Figure 14 This is an example Figure 13 The diagram shows a plan view of the front surface of the display device. Figure 15 This is an example Figure 14 The diagram shows a plan view of the back surface of the PCB. Figure 16 Examples are given as follows: Figure 15 The first state of the PCB as seen in direction A. Figure 17 Examples are given as follows: Figure 15 The second state of the PCB as seen in direction A. Figure 18 Examples are given as follows: Figure 15 The third state of the PCB as seen in direction A.

[0238] Figure 16 The first state of the PCB shown can be the state of the PCB when the first connecting member 333 and the second connecting member 335 are not bent. Figure 17 The second state of the PCB shown can be the state of the PCB when the first connecting member 333 and the second connecting member 335 are bent toward the front surface of the first PCB 330-1. Figure 18 The third state of the PCB shown can be the state of the PCB when the first connecting member 333 and the second connecting member 335 are bent toward the rear surface of the first PCB 330-1.

[0239] Reference Figures 14 to 18 According to another embodiment of the present disclosure, the display device 1' includes a PCB 330' which may include a first PCB 330-1, a second PCB 330-2, and a third PCB 330-3 respectively connected to both sides (the third peripheral portion and the fourth peripheral portion) of the first PCB 330-1 in the first direction X.

[0240] Furthermore, the second vibration device 630 can be disposed on the rear surface of the first PCB 330-1. The third vibration device 650 and the fourth vibration device 670 can be disposed on the rear surface of the second PCB 330-2 and the rear surface of the third PCB 330-3, respectively.

[0241] In an embodiment of this disclosure, a second vibration device 630 is provided on the rear surface of the first PCB 330-1, and a third vibration device 650 and a fourth vibration device 670 are respectively provided on the rear surfaces of the second PCB 330-2 and the third PCB 330-3, but this embodiment is not limited thereto. According to another embodiment of this disclosure, one or more second vibration devices 630 may be provided on the rear surface of the first PCB 330-1, and one or more third vibration devices 650 and fourth vibration devices 670 may be provided on the rear surfaces of the second PCB 330-2 and the third PCB 330-3, respectively.

[0242] The first PCB 330-1 may be referred to as the main PCB, source PCB, or primary PCB. The first PCB 330-1 may be the same as the PCB 330 included in the display device 1 according to the embodiments of the present disclosure, and therefore its repeated description is omitted.

[0243] In embodiments of this disclosure, an example in which the first PCB 330-1 is provided as one will be described, and an example in which the first PCB 330-1 is provided as multiple will be described below.

[0244] The second PCB 330-2 and the third PCB 330-3 can be referred to as the main PCB and sub-PCB, and can function as a high-frequency speaker (tweeter).

[0245] The second PCB 330-2 can be connected to the third peripheral portion (the left peripheral portion in the forward direction relative to the display panel 100) of the first PCB 330-1 by using the first connecting member 333. The third PCB 330-3 can be connected to the fourth peripheral portion (the right peripheral portion in the forward direction relative to the display panel 100) of the first PCB 330-1 by using the second connecting member 335.

[0246] The first connecting member 333 and the second connecting member 335 can be bent toward the front and rear surfaces (or the z-axis direction) of the first PCB 330-1. Based on the bending direction of the first connecting member 333 and the second connecting member 335, the second PCB 330-2 and the third PCB 330-3 can be set toward the left front direction (FLD) or the right front direction (FRD) of the display panel 100.

[0247] According to embodiments of this disclosure, such as Figure 17 As shown, the first connecting member 333 and the second connecting member 335 can be bent toward the front surface side of the first PCB 330-1 or the front center CF of the display panel 100. Therefore, the second PCB 330-2 can be positioned toward the right front direction FRD of the display panel 100, and the third PCB 330-3 can be positioned toward the left front direction FLD of the display panel 100. Thus, the second PCB 330-2 and the third PCB 330-3 can be positioned toward the front center CF of the display panel 100.

[0248] Therefore, the third sound SW3 generated by the vibration of the second PCB 330-2 can travel towards the right front direction FRD of the display panel 100, and the fourth sound SW4 generated by the vibration of the third PCB 330-3 can travel towards the left front direction FLD of the display panel 100. Thus, the third sound SW3 and the fourth sound SW4 can travel towards the front center CF of the display panel 100.

[0249] According to embodiments of this disclosure, such as Figure 18 As shown, the first connecting member 333 and the second connecting member 335 can be bent toward the rear surface side of the first PCB 330-1 or the rear center CB of the display panel 100. Therefore, the second PCB 330-2 can be positioned toward the left front direction FLD of the display panel 100, and the third PCB 330-3 can be positioned toward the right front direction FRD of the display panel 100. Thus, the second PCB 330-2 and the third PCB 330-3 can be positioned outward relative to the front direction of the display panel 100.

[0250] Therefore, the third sound SW3 generated by the vibration of the second PCB 330-2 can travel towards the left front direction FLD of the display panel 100, and the fourth sound SW4 generated by the vibration of the third PCB 330-3 can travel towards the right front direction FRD of the display panel 100. Thus, the third sound SW3 and the fourth sound SW4 can travel towards the outside of the display panel 100 in the forward direction.

[0251] Therefore, according to embodiments of this disclosure, the second PCB 330-2 can be positioned relative to the forward direction of the display panel 100 at the third peripheral portion or left peripheral portion of the first PCB 330-1, facing the left-forward direction FLD or right-forward direction FRD of the display panel 100, and can vibrate based on the vibration of the third vibration device 650 to generate a third sound SW3. The third PCB 330-3 can be positioned relative to the forward direction of the display panel 100 at the fourth peripheral portion or right peripheral portion of the first PCB 330-1, facing the left-forward direction FLD or right-forward direction FRD of the display panel 100, and can vibrate based on the vibration of the fourth vibration device 670 to generate a fourth sound SW4.

[0252] The first connecting member 333 and the second connecting member 335 may each include a line (or cable) for providing sound signals (or voice signals) to the third vibration device 650 and the fourth vibration device 670 respectively disposed at the second PCB 330-2 and the third PCB 330-3, and may be, for example, flexible printed circuit boards (FPCBs), but the embodiments of this disclosure are not limited thereto.

[0253] The bending degree of the first connecting member 333 and the bending degree of the second connecting member 335 may be varied based on the acoustic environment to be provided by the display device 1', but the embodiments of this disclosure are not limited thereto.

[0254] Figure 19 This is an example Figure 13 Another plan view of the front surface of the display device is shown, and Figure 20 This is an example Figure 19 A plan view of the implementation of the rear surface of the PCB shown.

[0255] Figure 19 The display device 1' shown can be modified Figure 13 The display device 1' shown is implemented using a PCB among its components. Therefore, in the following description, repeated descriptions of components other than the PCB are omitted or will be given briefly.

[0256] Figure 19 The display device 1' shown may include multiple first PCBs.

[0257] Reference Figure 19 and Figure 20 , Figure 19 The PCB 330' included in the display device 1' shown may include a plurality of first PCBs 330-1a to 330-1d, a second PCB 330-2 connected to the first PCB 330-1a disposed at one end (left end) of the plurality of first PCBs 330-1a to 330-1d in the forward direction relative to the display panel 100, and a third PCB 330-3 connected to the first PCB 330-1d disposed at the other end (right end) of the plurality of first PCBs 330-1a to 330-1d in the forward direction relative to the display panel 100.

[0258] In embodiments of this disclosure, PCB 330' is exemplified as comprising four first PCBs 330-1a to 330-1d, and the number of first PCBs may be two, three, five, or more.

[0259] According to embodiments of this disclosure, a plurality of first PCBs 330-1a to 330-1d can be arranged at certain intervals in a first direction X. A second PCB 330-2 can be connected to the first PCB 330-1a located at the left end of the plurality of first PCBs 330-1a to 330-1d in the forward direction relative to the display panel 100. A third PCB 330-3 can be connected to the first PCB 330-1d located at the right end of the plurality of first PCBs 330-1a to 330-1d in the forward direction relative to the display panel 100.

[0260] The second PCB 330-2 can be connected to the third peripheral portion (left peripheral portion in the forward direction relative to the display panel 100) of the first PCB 330-1a at the left end using the first connecting member 333. The third PCB 330-3 can be connected to the fourth peripheral portion (right peripheral portion in the forward direction relative to the display panel 100) of the first PCB 330-1d at the right end using the second connecting member 335.

[0261] When the first connecting member 333 and the second connecting member 335 are bent in the forward or backward direction of the display panel 100, the second PCB 330-2 and the third PCB 330-3 can be positioned towards the left-forward direction (FLD) or right-forward direction (FRD) of the display panel 100, and can be vibrated by the third vibration device 650 and the fourth vibration device 670 to generate the third sound SW3 and the fourth sound SW4. (The above has been referred to...) Figures 15 to 18 This has been described, and therefore repeated descriptions of them have been omitted.

[0262] Reference Figure 19 and Figure 20 When the display device 1' includes a plurality of first PCBs 330-1a to 330-1d, according to embodiments of the present disclosure, the angle of each of the plurality of first PCBs 330-1a to 330-1d with respect to the display panel 100 may be the same or different.

[0263] Figure 21 This is a plan view illustrating the front surface of a display device according to another embodiment of the present disclosure. Figure 22 Examples Figure 21 The front surface of the PCB. Figure 23 Examples Figure 21 The back surface of the PCB. Figure 24 It is along Figure 22 The cross-sectional view taken from line II-II'. Figure 25 This is an example Figure 21 A diagram of another embodiment of the front surface of the PCB. Figure 26 It is along Figure 25 The cross-sectional view taken from line III-III'. Figure 27 Examples Figure 21 It is part of the supporting structure of the display device.

[0264] Figure 21 The display device 1 shown can be modified Figure 1 The components of the display device 1 shown are implemented using a PCB. Therefore, in the following description, repeated descriptions of components other than the PCB are omitted or will be given briefly.

[0265] Reference Figures 21 to 25 , Figure 21 The PCB 330 included in the display device 1 shown may include a base member 336, a fourth member 337 disposed on the rear surface of the base member 336, and a fifth member 338 disposed on the rear surface of the fourth member 337 to support the second vibration device 630.

[0266] The base member 336 of the PCB 330 according to an embodiment of the present disclosure can be used Figure 1 PCB 330 or Figure 13 The first PCB 330-1 of PCB 330' is implemented, and its repeated description is omitted or will be briefly given below. For example, PCB 330" according to the embodiments of this disclosure can be applied to Figure 1 PCB 330, and can be applied to Figure 13 The first PCB 330-1 in PCB 330'.

[0267] Therefore, the structure of PCB 330” according to the embodiments of this disclosure can be achieved by placing the fourth component 337 and the fifth component 338 in Figure 1 This is achieved on the rear surface of PCB 330. The structure of PCB 330 can be achieved by placing the fourth component 337 and the fifth component 338 on the rear surface of PCB 330. Figure 13 This is implemented on the rear surface of the first PCB 330-1 in PCB 330', and the structure of PCB 330" described below can be equivalently applied to Figure 1 PCB 330 and Figure 13 The first PCB 330-1.

[0268] For example, the base member 336 may have the following characteristics: Figure 22 The square planar shape shown, or may have the following characteristics: Figure 25 shown The shape of the planar shape and the shape of the base member 336 are not limited to the embodiments disclosed herein.

[0269] According to embodiments of the present disclosure, the fourth component 337 may be a structure for placing the fifth component 338. The fourth component 337 may transmit the vibration of the second vibration device 630 to the base component 336. For example, the fourth component 337 may include a first region 337a and a second region 337b. The first region 337a may be disposed on the rear surface of the base component 336 to transmit the vibration of the second vibration device 630 to the base component 336, and the fourth component 337 may be a structure that supports and fixes the rear surface of the base component 336. The second region 337b may be a structure that extends from the first region 337a and in which the fifth component 338 is disposed. For example, the fourth component 337 may be referred to as a guide component, but embodiments of the present disclosure are not limited thereto.

[0270] According to an embodiment of the present disclosure, the fifth member 338 may be disposed on the rear surface of the fourth member 337. As an embodiment of the present disclosure, the first portion 338a of the fifth member 338 may be formed as flat and may be attached to the rear surface of the fourth member 337 by means of attachment (or joining). As an embodiment of the present disclosure, the second portion 338b of the fifth member 338 may be attached to or detached from the rear surface of the fourth member 337 by means of fastening. According to an embodiment of the present disclosure, the fifth member 338 may include a third portion 338c disposed between the first portion 338a and the second portion 338b and supporting the second vibration device 630. As an embodiment of the present disclosure, the third portion 338c of the fifth member 338 may be disposed in the second region 337b of the fourth member 337. For example, the fifth member 338 may be referred to as a support member, but the embodiments of the present disclosure are not limited thereto. For example, the third portion 338c may be referred to as a support portion, but the embodiments of the present disclosure are not limited thereto.

[0271] In the fifth member 338 according to the embodiments of the present disclosure, the surface (or front surface or inner surface) of the third portion 338c facing the fourth member 337 can have a concave shape with a certain curvature. Therefore, in the fifth member 338, the surface (or rear surface or outer surface) of the third portion 338c opposite to the front surface can have a convex shape with a certain curvature. Therefore, the second vibration device 630 provided at the third portion 338c can correspond to the shape of the third portion 338c and can be provided in a shape that is concave towards the fourth member 337.

[0272] Therefore, according to embodiments of this disclosure, the vibration of the second vibration device 630 can be transmitted along the fourth member 337 and the fifth member 338 to the base member 336, thus the base member 336 can vibrate to generate sound. Furthermore, the third portion 338c of the fifth member 338 can vibrate based on the vibration of the second vibration device 630 to generate sound, and the sound generated by the third portion 338c can be concentrated towards the center of curvature based on the shape of the third portion 338c, thereby amplifying the sound.

[0273] The sound generated by the vibration of the fifth component 338 and the sound generated by the vibration of the base component 336 can have different frequencies of the vocal cords. Therefore, the PCB 330 according to the embodiment of this disclosure can output sound with a wide spectrum in the forward direction of the display panel 100.

[0274] The fifth member 338 according to an embodiment of the present disclosure may include a second pattern 338d formed at the third portion 338c. The second pattern 338d according to an embodiment of the present disclosure may be a groove, but the embodiments of the present disclosure are not limited thereto. Figure 27 As shown, the second pattern 338d can be formed on the rear surface (or outer surface) of the third portion 338c, but the embodiments of this disclosure are not limited thereto. For example, the second pattern 338d can be formed on the front surface (or inner surface) of the third portion 338c, or it can be formed on both the front and rear surfaces of the third portion 338c. For example, when the second pattern 338d is formed on the third portion 338c, the resonant frequency of the third portion 338c can be controlled by changing the mass and stiffness of the third portion 338c, and thus, the frequency characteristics of the sound generated based on the vibration of the third portion 338c can be set. For example, the second pattern 338d can be a frequency setting pattern and a frequency adjustment pattern, but the embodiments of this disclosure are not limited thereto.

[0275] Figures 28 to 30 This is a plan view illustrating a third part of an embodiment according to the present disclosure. Figures 31 to 34 This is a side view illustrating a third part of another embodiment of the present disclosure.

[0276] For example, such as Figure 28 and 29 As shown, the second pattern 338d can be provided as having a line shape or a strip shape. For example... Figure 30As shown, the second pattern 338d can be configured to have a diagonal shape. In embodiments of this disclosure, the spacing of the second patterns 338d can be the same or different. For example, the spacing of all second patterns 338d can be the same or different. In embodiments of this disclosure, the second patterns 338d can include multiple groups based on their arrangement position at the third portion 338c. The spacing of the second patterns 338d in one of the multiple groups can be the same, and the spacing of the second patterns 338d in another of the multiple groups can be different. One or more second patterns 338d can be included in a group. In embodiments of this disclosure, such as... Figure 31 As shown, the first interval G1 of the second pattern 338d disposed in one region (e.g., the central region) of the third part 338c may be greater than the second interval G2 of the second pattern 338d disposed in another region (e.g., the periphery (or peripheral portion) of the central region) of the third part 338c, but the embodiments of this disclosure are not limited thereto.

[0277] As an embodiment of this disclosure, all second patterns 338d may be formed to have the same depth or may be formed to have different depths. For example, the second patterns 338d may include multiple groups based on their arrangement positions at the third portion 338c. The depth of the second patterns 338d included in one of the multiple groups may be the same, and the depth of the second patterns 338d included in another of the multiple groups may be different. One or more second patterns 338d may be included in a group. As an embodiment of this disclosure, such as Figure 32 As shown, the first depth D1 of the second pattern 338d disposed in one region (e.g., the central region) of the third portion 338c may be deeper than the second depth D2 of the second pattern 338d disposed in another region (e.g., the periphery (or peripheral portion) of the central region) of the third portion 338c, but the embodiments of this disclosure are not limited thereto.

[0278] As an embodiment of this disclosure, all second patterns 338d may be formed to have the same width, or may be formed to have different widths. For example, the second patterns 338d may include multiple groups based on their arrangement positions at the third portion 338c. The width of the second patterns 338d included in one of the multiple groups may be the same, and the width of the second patterns 338d included in another of the multiple groups may be different. One or more second patterns 338d may be included in a group. As an embodiment of this disclosure, the second pattern 338d may be formed such that its width narrows or widens in the direction from one periphery of the third portion 338c to another periphery of the third portion 338c. As an embodiment of this disclosure, such as Figure 33As shown, the second pattern 338d can be formed such that its first width W1 and second width W2 narrow in the direction from one periphery of the third portion 338c to the other periphery of the third portion 338c, or as... Figure 34 As shown, the second pattern 338d can be formed such that its first width W1 and second width W2 widen in the direction from one periphery of the third part 338c to the other periphery of the third part 338c.

[0279] Figure 35 A vibration device according to an embodiment of the present disclosure is illustrated.

[0280] Reference Figure 35 The vibration device 600 according to the embodiments of the present disclosure may include a piezoelectric vibration part 601, a first electrode part E1, and a second electrode part E2.

[0281] The piezoelectric vibration portion 601 may include a piezoelectric material (or electroactive material) exhibiting a piezoelectric effect. For example, a piezoelectric material may have the following characteristics: when pressure or torsion (or bending) is applied to a crystal structure by an external force, a potential difference arises due to dielectric polarization caused by changes in the relative positions of positive (+) ions and negative (-) ions, and vibration is generated by an electric field based on the voltage applied thereto. The piezoelectric vibration portion 601 may be referred to as a vibration layer, piezoelectric layer, piezoelectric material layer, electroactive layer, vibration portion, piezoelectric material portion, electroactive portion, piezoelectric structure, inorganic material layer, or inorganic material portion, but embodiments of this disclosure are not limited thereto.

[0282] The piezoelectric vibrating portion 601 can be formed of a transparent, translucent, or opaque piezoelectric material (or electroactive material), and can be transparent, translucent, or opaque. The piezoelectric vibrating portion 601 can be formed of a ceramic-based material for generating relatively high vibrations, or it can be formed of a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure can have both piezoelectric and inverse piezoelectric effects, and can be an oriented plate-like structure. The perovskite crystal structure can be represented by the chemical formula "ABO3". Here, A can include a divalent metal element, and B can include a tetravalent metal element. For example, in the chemical formula "ABO3", A and B can be cations, and O can be an anion. For example, the piezoelectric vibrating portion 601 can include at least one or more of PbTiO3, PbZrO3, PbZrTiO3, BaTiO3, and SrTiO3, but embodiments of this disclosure are not limited thereto.

[0283] The piezoelectric vibrating portion 601 according to embodiments of the present disclosure 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 piezoelectric vibrating portion 601 may include at least one or more of CaTiO3, BaTiO3, and SrTiO3 that do not contain Pb, but embodiments are not limited thereto.

[0284] The piezoelectric vibration portion 601 according to the embodiments of the present disclosure can be configured in a circular shape, an elliptical shape or a polygonal shape, but the embodiments of the present disclosure are not limited thereto.

[0285] The first electrode portion E1 may be disposed on the first surface (or top surface, upper surface, or front surface) of the piezoelectric vibrating portion 601 and electrically connected to the first surface of the piezoelectric vibrating portion 601. For example, the first electrode portion E1 may have a single electrode type (or a common electrode) disposed on the entire first surface of the piezoelectric vibrating portion 601. For example, the first electrode portion may have the same shape as the piezoelectric vibrating portion 601, but embodiments of the present disclosure are not limited thereto. The first electrode portion E1 according to embodiments of the present disclosure may be formed of a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material. For example, examples of transparent or semi-transparent conductive materials may include indium tin oxide (ITO) or indium zinc oxide (IZO), but embodiments of the present disclosure are not limited thereto. Examples of opaque conductive materials may include aluminum (Al), copper (Cu), gold (Au), silver (Ag), molybdenum (Mo), and Mg or alloys thereof, but embodiments of the present disclosure are not limited thereto.

[0286] The second electrode portion E2 can be disposed on the second surface (or bottom surface, lower surface, or rear surface) of the piezoelectric vibrating portion 601 opposite to the first surface, and electrically connected to the second surface of the piezoelectric vibrating portion 601. For example, the second electrode portion E2 can have a single electrode type (or common electrode) disposed on the entire second surface of the piezoelectric vibrating portion 601. For example, the second electrode portion E2 can have a larger size than the piezoelectric vibrating portion 601, and can have the same shape as the piezoelectric vibrating portion 601, but embodiments of the present disclosure are not limited thereto. The second electrode portion E2 according to embodiments of the present disclosure can be formed of a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material. For example, the second electrode portion E2 can be formed of the same material as the first electrode portion E1, but embodiments of the present disclosure are not limited thereto. In another example, the second electrode portion E2 can be formed of a different material than the first electrode portion E1.

[0287] The piezoelectric vibrating portion 601 can be polarized (or polarized) by applying a certain voltage to the first electrode portion E1 and the second electrode portion E2 in a certain temperature atmosphere or in a temperature atmosphere that can be changed from high temperature to room temperature. Embodiments of this disclosure are not limited to these examples. The piezoelectric vibrating portion 601 can vibrate by alternately and / or repeatedly contracting and expanding based on the piezoelectric effect (or piezoelectric characteristics) according to an externally applied sound signal (or speech signal) to the first electrode portion E1 and the second electrode portion E2.

[0288] The vibration device 600 according to embodiments of the present disclosure may further include a first protective member and a second protective member.

[0289] The first protective member may be disposed at the first electrode portion E1 and protect the first electrode portion E1. For example, the first protective member may be formed of plastic material, fiber material or wood material, but the embodiments of this disclosure are not limited thereto.

[0290] The second protective member can be disposed at the second electrode portion E2 and protect the second electrode portion E2. For example, the second protective member can be formed of plastic, fiber, or wood materials, but embodiments of this disclosure are not limited thereto. For example, the first protective member can be formed of the same or different materials as the second protective member. Either the first or the second protective member can be attached to or connected to the display panel via an adhesive member.

[0291] Figure 36 A vibration device according to another embodiment of the present disclosure is illustrated.

[0292] Reference Figure 36 The vibration device 600 according to other embodiments of the present disclosure may be referred to as a flexible sound generator, flexible actuator, flexible loudspeaker, flexible piezoelectric loudspeaker, membrane actuator, membrane piezoelectric composite actuator, membrane loudspeaker, membrane piezoelectric loudspeaker or membrane piezoelectric composite loudspeaker, but the embodiments of the present disclosure are not limited thereto.

[0293] The vibration device 600 according to embodiments of the present disclosure may include a piezoelectric vibration portion 603, a first electrode portion E1, and a second electrode portion E2.

[0294] The piezoelectric vibrating portion 603 may include a piezoelectric material, a composite piezoelectric material, or an electroactive material, and the piezoelectric material, composite piezoelectric material, and electroactive material may exhibit a piezoelectric effect. The piezoelectric vibrating portion 603 may be referred to as a vibrating layer, piezoelectric layer, piezoelectric material layer, electroactive layer, vibrating portion, piezoelectric material portion, electroactive portion, piezoelectric structure, piezoelectric composite layer, piezoelectric composite, or piezoelectric ceramic composite, but the embodiments disclosed herein are not limited thereto. The piezoelectric vibrating portion 603 may be formed of a transparent, translucent, or opaque piezoelectric material, and may be transparent, translucent, or opaque.

[0295] The piezoelectric vibrating portion 603 according to embodiments of the present disclosure may include a plurality of first portions 603a and a plurality of second portions 603b. For example, the plurality of first portions 603a and the plurality of second portions 603b may be arranged alternately and repeatedly in a first direction X (or a second direction Y). For example, the first direction X may be the width direction or a first horizontal direction of the piezoelectric vibrating portion 603. The second direction Y may be the length direction or a second horizontal direction of the piezoelectric vibrating portion 603 intersecting the first direction X. Embodiments of the present disclosure are not limited thereto, and the first direction X may be the length direction or a second horizontal direction of the piezoelectric vibrating portion 603, and the second direction Y may be the width direction or a first horizontal direction of the piezoelectric vibrating portion 603.

[0296] Each of the plurality of first portions 603a may be configured as an inorganic material portion. The inorganic material portion may include the piezoelectric material described above. For example, each of the plurality of first portions 603a may include a piezoelectric material, which, as referenced above... Figure 35 The piezoelectric vibration components 601 described are essentially the same, so their repeated descriptions can be omitted.

[0297] Each of the plurality of first portions 603a according to embodiments of the present disclosure may be disposed between a plurality of second portions 603b. For example, the plurality of first portions 603a may have a third width W3 parallel to a first direction X (or a second direction Y) and a length parallel to the second direction Y (or the first direction X). Each of the plurality of second portions 603b may have a fourth width W4 parallel to the first direction X (or the second direction Y) and may have a length parallel to the second direction Y (or the first direction X). The third width W3 may be the same as or different from the fourth width W4. For example, the third width W3 may be greater than the fourth width W4. For example, the first portions 603a and the second portions 603b may include line shapes or strip shapes having the same size or different sizes. Thus, the piezoelectric vibrating portion 603 may include a 2-2 composite structure and thus may have a resonant frequency of 20 kHz or less, but the embodiments are not limited thereto, and the resonant frequency of the piezoelectric vibrating portion 603 may vary based on one or more of the shape, length, and thickness.

[0298] In the piezoelectric vibrating portion 603, each of the plurality of first portions 603a and the plurality of second portions 603b may be arranged in parallel (or arranged) on the same plane (or the same layer). Each of the plurality of second portions 603b may be connected to or attached to an adjacent second portion 603b. For example, each of the plurality of second portions 603b may be configured to fill the gap between two adjacent first portions of the plurality of first portions 603a and may be connected to or attached to an adjacent second portion 603b. The piezoelectric vibrating portion 603 may extend to a desired size or length based on the lateral connection (or connection) between the first portions 603a and the second portions 603b.

[0299] In the piezoelectric vibration section 603, the width (or dimension) W4 of each of the plurality of second sections 603b may gradually decrease in the direction from the central portion of the piezoelectric vibration section 603 or the vibration device 600 to the two peripheries (or ends).

[0300] According to embodiments of this disclosure, the second portion 603b with the largest width W4 among the plurality of second portions 603b can be located in the portion where the highest stress may concentrate when the piezoelectric vibrating portion 603 or the vibrating device 600 vibrates in the vertical direction Z (or the thickness direction). The second portion 603b with the smallest width W4 among the plurality of second portions 603b can be located in the portion where relatively low stress may occur when the piezoelectric vibrating portion 603 or the vibrating device 600 vibrates in the vertical direction Z. For example, the second portion 603b with the largest width W4 among the plurality of second portions 603b can be provided in the central portion of the piezoelectric vibrating portion 603, and the second portion 603b with the smallest width W4 among the plurality of second portions 603b can be provided at the two edges or periphery of the piezoelectric vibrating portion 603. Therefore, when the piezoelectric vibrating portion 603 or the vibrating device 600 vibrates in the vertical direction Z, interference of sound waves or overlap of resonant frequencies occurring in the portion where the highest stress is concentrated can be reduced or minimized. Therefore, the dip in sound pressure level that occurs in the low-pitched vocal cords can be reduced, thereby improving the flatness of the sound characteristics in the low-pitched vocal cords. For example, the flatness of sound characteristics can be the level of deviation between the highest and lowest sound pressure levels.

[0301] In the piezoelectric vibration section 603, each of the plurality of first sections 603a may have a different size (or width). For example, the size (or width) of each of the plurality of first sections 603a may gradually decrease or increase in the direction from the central portion of the piezoelectric vibration section 603 or the vibration device 600 to the two peripheries (or ends). For example, in the piezoelectric vibration section 603, based on the various natural vibration frequencies of the vibrations of each of the plurality of first sections 603a with different sizes, the sound pressure level characteristics of the sound can be enhanced, and the sound reproduction band can be increased.

[0302] Each of the plurality of second portions 603b can be disposed between the plurality of first portions 603a. Therefore, in the piezoelectric vibrating portion 603 or the vibrating device 600, the vibrational energy of the links in a unit lattice of the first portion 603a can be increased by the corresponding second portion 603b. Thus, vibration can be increased, and piezoelectric properties and flexibility can be ensured. For example, the second portion 603b may comprise at least one or more of epoxy-based polymers, acrylic-based polymers, and silicone-based polymers, but embodiments of this disclosure are not limited thereto.

[0303] According to embodiments of the present disclosure, multiple second portions 603b can be configured as organic material portions. For example, the organic material portions can be disposed between the inorganic material portions and can absorb impacts applied to the inorganic material portions (or the first portion), can release stress concentrated on the inorganic material portions to enhance the overall durability of the piezoelectric vibrating portion 603 or the vibration device 600, and can provide flexibility to the piezoelectric vibrating portion 603 or the vibration device 600.

[0304] According to embodiments of the present disclosure, multiple second portions 603b may have lower modulus and viscoelasticity than the first portion 603a. Therefore, the second portions 603b may enhance the reliability of the first portion 603a, which is susceptible to impact due to its brittle nature. For example, the second portions 603b may comprise a material having a loss coefficient of about 0.01 to about 1.0 and a modulus of about 0.1 [GPa] to about 10 [GPa].

[0305] The organic material portion included in the second part 603b may include one or more of organic materials, organic polymers, organic piezoelectric materials, and organic non-piezoelectric materials, which have flexible properties compared to the inorganic material portion of the first part 603a. For example, the second part 603b may be referred to as an adhesive portion, an elastic portion, a bending portion, a damping portion, or a flexible portion with flexibility, but the embodiments of this disclosure are not limited thereto.

[0306] Multiple first portions 603a and second portions 603b can be disposed on (or connected to) the same plane, thus the piezoelectric vibrating portion 603 of the vibration array 210 according to various embodiments of the present disclosure can have a single thin film type. For example, the piezoelectric vibrating portion 603 can have a structure in which multiple first portions 603a are connected to one side. For example, multiple first portions 603a can have a structure connected to the entire piezoelectric vibrating portion 603. For example, the piezoelectric vibrating portion 603 can vibrate in the vertical direction (or thickness direction) by means of the first portions 603a having vibration characteristics, and can be bent into a curved shape by means of the flexible second portions 603b. Furthermore, in the piezoelectric vibrating portion 603 according to various embodiments of the present disclosure, the dimensions of the first portions 603a and the second portions 603b can be adjusted based on the piezoelectric characteristics and flexibility required by the piezoelectric vibrating portion 603 or the vibration device 600. For example, when the piezoelectric vibrating portion 603 requires piezoelectric characteristics rather than flexibility, the dimensions of the first portions 603a can be adjusted to be larger than the dimensions of the second portions 603b. As another example, when the piezoelectric vibrating portion 603 requires flexibility rather than piezoelectric properties, the dimensions of the second portion 603b can be adjusted to be larger than the dimensions of the first portion 603a. For example, the dimensions of the second portion 603b and the first portion 603a can be one or more of the width, length, and thickness. Therefore, the dimensions of the piezoelectric vibrating portion 603 can be adjusted based on its desired characteristics, thus making the piezoelectric vibrating portion 603 easy to design.

[0307] The first electrode portion E1 may be disposed on the first surface (or upper surface) of the piezoelectric vibration portion 603. The first electrode portion E1 may be commonly disposed on or connected to the first surface of each of the plurality of first portions 603a and the first surface of each of the plurality of second portions 603b, and may be electrically connected to the first surface of each of the plurality of first portions 603a. For example, the first electrode portion E1 may be a single electrode type disposed on the entire first surface of the piezoelectric vibration portion 603. For example, the first electrode portion E1 may have the same shape as the piezoelectric vibration portion 603, but embodiments of this disclosure are not limited thereto. The first electrode portion E1 according to an embodiment of this disclosure (as referred above) Figure 35 The material may include transparent conductive materials, semi-transparent conductive materials, or opaque conductive materials.

[0308] The second electrode portion E2 can be disposed on the second surface (or rear surface) of the piezoelectric vibration portion 603 opposite to the first surface. The second electrode portion E2 can be disposed on the second surface of each of the plurality of first portions 603a and the second surface of each of the plurality of second portions 603b, and can be electrically connected to the second surface of each of the plurality of first portions 603a. For example, the second electrode portion E2 can be a single electrode type disposed on the entire second surface of the piezoelectric vibration portion 603. For example, the second electrode portion E2 can have the same shape as the piezoelectric vibration portion 603, but embodiments of this disclosure are not limited thereto. The second electrode portion E2 according to embodiments of this disclosure (as referred above) Figure 35 The material may include transparent conductive materials, semi-transparent conductive materials, or opaque conductive materials.

[0309] The piezoelectric vibration portion 603 can be polarized (or polarized) by applying a certain voltage to the first electrode portion E1 and the second electrode portion E2 in a certain temperature atmosphere or in a temperature atmosphere that can be changed from high temperature to room temperature, but the embodiments of this disclosure are not limited thereto. For example, the piezoelectric vibration portion 603 can vibrate based on the piezoelectric effect (or piezoelectric characteristics) by alternately and / or repeatedly contracting and expanding according to the sound signal (or voice signal) applied from the outside to the first electrode portion E1 and the second electrode portion E2. For example, the piezoelectric vibration portion 603 can vibrate based on the vertical direction (or thickness direction Z) vibration D33 and the horizontal direction (or planar direction) vibration D31 of the first electrode portion E1 and the second electrode portion E2. The piezoelectric vibration portion 603 can further improve the vibration by increasing the displacement of the display panel (or vibrating plate) by contracting and expanding in the horizontal direction.

[0310] According to embodiments of this disclosure, the vibration device 600 may include a plurality of inorganic material portions having piezoelectric properties and an organic material portion located between the plurality of inorganic material portions. For example, the vibration device 600 may include a plurality of inorganic material portions having piezoelectric properties and an organic material portion connected between the plurality of inorganic material portions.

[0311] According to embodiments of this disclosure, either the first electrode portion E1 or the second electrode portion E2 can be attached or connected to the display device by an adhesive member.

[0312] The vibration device 600 according to embodiments of the present disclosure may further include a first protective member and a second protective member.

[0313] The first protective member may be disposed at the first electrode portion E1 and may protect the first electrode portion E1. For example, the first protective member may include plastic material, fiber material or wood material.

[0314] The second protective member can be disposed at the second electrode portion E2 and can protect the second electrode portion E2. For example, the second protective member can include a plastic material, a fiber material, or a wood material. For example, the first protective member can include a material that is the same as or different from the material of the second protective member. Either the first protective member or the second protective member can be attached or connected to the display panel (or vibrating plate) by an adhesive member.

[0315] Figure 37 A vibration device according to another embodiment of the present disclosure is illustrated. Figure 37 Examples Figure 35 The piezoelectric vibration component shown is a modified embodiment. Therefore, in the following text, repeated descriptions of components other than the piezoelectric vibration component may be omitted or will be briefly given.

[0316] Reference Figure 37 In another embodiment of the vibration device 600 according to the present disclosure, the piezoelectric vibration portion 603 may include a plurality of first portions 603a spaced apart from each other along a first direction X and a second direction Y, and a second portion 603b disposed between the plurality of first portions 603a.

[0317] Each of the plurality of first portions 603a 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 603a may have a hexahedral shape (or a hexahedral object shape) having the same dimensions and may be arranged in a grid shape. For example, each of the plurality of first portions 603a may include a piezoelectric material, which, as referenced above Figure 36 The first part 603a of the description is substantially the same; therefore, the same reference numerals denote the same elements, and their repeated descriptions can be omitted.

[0318] The second portion 603b may be disposed between the plurality of first portions 603a along each of the first direction X and the second direction Y. The second portion 603b may be configured to fill the gap or space between two adjacent first portions 603a or surround each of the plurality of first portions 603a, thus allowing it to connect to or be attached to adjacent first portions 603a. According to embodiments of the present disclosure, the width of the second portion 603b disposed between two adjacent first portions 603a along the first direction X may be the same as or different from the width of the first portions 603a, and the width of the second portion 603b disposed between two adjacent first portions 603a along the second direction Y may be the same as or different from the width of the first portions 603a. For example, the second portion 603b may include portions similar to those referenced above. Figure 36The second part 603b describes essentially the same organic material; therefore, the same reference numerals denote the same elements, and their repeated descriptions may be omitted.

[0319] Therefore, the piezoelectric vibration portion 603 of the vibration device 600 may include a composite structure of 1-3, and thus may have a resonant frequency of 30 MHz or less, but the embodiments of this disclosure are not limited thereto, and the resonant frequency of the piezoelectric vibration portion 603 may vary based on one or more of the shape, length and thickness.

[0320] Figure 38 A vibration device according to another embodiment of the present disclosure is illustrated. Figure 38 Examples Figure 35 The piezoelectric vibration component shown is a modified embodiment. Therefore, in the following text, repeated descriptions of components other than the piezoelectric vibration component may be omitted or will be briefly given.

[0321] Reference Figure 38 In another embodiment of the vibration device 600 according to the present disclosure, the piezoelectric vibration portion 603 may include a plurality of first portions 603a spaced apart from each other along a first direction X and a second direction Y, and a second portion 603b disposed between the plurality of first portions 603a.

[0322] Each of the plurality of first portions 603a according to another embodiment of the present disclosure may have a flat structure with a circular shape. For example, each of the plurality of first portions 603a 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 603a may have a dot shape including an elliptical shape, a polygonal shape, or a donut shape.

[0323] The second portion 603b may be disposed between the plurality of first portions 603a along each of the first direction X and the second direction Y. The second portion 603b may be configured to surround each of the plurality of first portions 603a, and thus may be connected to or attached to the side surface of each of the plurality of first portions 603a. Each of the plurality of first portions 603a and the second portion 603b may be disposed (or arranged) in parallel on the same plane (or the same layer).

[0324] In the piezoelectric vibration portion 603 of the vibration device 600 according to another embodiment of the present disclosure, each of the plurality of first portions 603a may have a flat structure in the shape of a triangle, rather than a flat structure in the shape of a circle. For example, each of the plurality of first portions 603a may have a triangular plate shape.

[0325] According to embodiments of this disclosure, four adjacent first portions 603a among a plurality of first portions 603a may be adjacent to each other to form a square or quadrilateral shape (or a square shape). The vertices of the four adjacent first portions 603a forming the square may be adjacent to each other in the central portion (or center portion) of the square.

[0326] According to another embodiment of this disclosure, six adjacent first portions 603a among a plurality of first portions 603a may be adjacent to each other to form a hexagonal shape (or a regular hexagonal shape). The vertices of the six adjacent first portions 603a forming the hexagonal shape may be adjacent to each other in the central portion (or center portion) of the hexagonal shape.

[0327] The display device according to embodiments of this disclosure can be applied to mobile devices, video phones, smartwatches, watch phones, wearable devices, foldable devices, rollable devices, bendable devices, flexible devices, bending devices, electronic notebooks, e-books, portable multimedia players (PMPs), personal digital assistants (PDAs), MP3 players, mobile medical devices, desktop personal computers (PCs), laptop PCs, netbooks, workstations, navigation devices, car navigation devices, automotive display devices, automotive equipment, theater equipment, theater display devices, TVs, wallpaper display devices, signage devices, game consoles, laptop computers, monitors, cameras, portable camcorders, home appliances, etc. Furthermore, the vibration device according to this disclosure can be applied to organic light-emitting lighting devices or inorganic light-emitting lighting devices. When the vibration device of this disclosure is applied to lighting devices, the vibration device can be used as both a light source and a speaker.

[0328] The display device according to embodiments of the present disclosure will now be described.

[0329] A display device according to an embodiment of the present disclosure may include: a display panel configured to display an image; a circuit section including a printed circuit board spaced apart from and connected to the display panel; a first vibration device disposed on the rear surface of the display panel; and a second vibration device disposed on the rear surface of the printed circuit board.

[0330] According to some embodiments of the present disclosure, the display device may further include: a first component configured to accommodate a display panel and a circuit section; and a second component configured to cover one or more peripheries of the front surface of the display panel and the upper part of the first component.

[0331] According to some embodiments of this disclosure, a first vibration device may be configured to vibrate a display panel to generate a first sound, and a second vibration device may be configured to vibrate a printed circuit board to generate a second sound.

[0332] According to some embodiments of this disclosure, the second sound may have a frequency of pitch vocal cords that are different from those of the first sound.

[0333] According to some embodiments of this disclosure, the second sound may have the same frequency of the pitch vocal cords as the first sound.

[0334] According to some embodiments of this disclosure, the first sound can be configured to be output in the forward direction of the display panel, and the second sound can be configured to be output in the upward direction of the display panel.

[0335] According to some embodiments of this disclosure, the printed circuit board can be configured at an angle relative to the display panel.

[0336] According to some embodiments of this disclosure, a plurality of printed circuit boards may be provided, and the plurality of printed circuit boards may be arranged at certain intervals along a first portion of the display panel, and the plurality of printed circuit boards may be arranged at the same angle toward the front-upward direction of the display panel, or may be arranged at different angles toward the front-upward direction of the display panel.

[0337] According to some embodiments of the present disclosure, the first component may include a first structure disposed on the rear surface of the display panel and the rear surface of the circuit section, and the first structure may include: a first-1 structure, the first-1 structure being configured to correspond to the display panel; and a first-2 structure, the first-2 structure being configured at a certain angle relative to the first-1 structure to correspond to the printed circuit board.

[0338] According to some embodiments of this disclosure, the first-2 structure can extend from the first-1 structure and bend in the front-upward direction of the display panel.

[0339] According to some embodiments of the present disclosure, the display device may further include a hinge portion disposed between the first-1 structure and the first-2 structure, each of a side of the first-1 structure and a side of the first-2 structure being connected to the hinge portion, and the first-2 structure being rotatable relative to the hinge portion in the front-upward direction of the display panel.

[0340] According to some embodiments of this disclosure, the area of ​​the second component that overlaps with the display panel may be spaced apart from the display panel.

[0341] According to some embodiments of this disclosure, the area of ​​the second component that overlaps with the display panel may be spaced apart from the display panel by a height, the height being configured to prevent the display panel from contacting the second component when the first-second structure rotates.

[0342] According to some embodiments of this disclosure, the display device may further include a third component disposed on the front surface of the display panel, and the area of ​​the second component overlapping with the third component may be spaced apart from the third component.

[0343] According to some embodiments of the present disclosure, the display device may further include a third component disposed on the front surface of the display panel, wherein the area of ​​the second component overlapping with the third component may be spaced apart from the third component by a height, the height being configured to prevent the third component from contacting the first component when the first-second structure rotates.

[0344] According to some embodiments of this disclosure, the first component may include a groove configured to receive each of the first and second vibration devices.

[0345] According to some embodiments of this disclosure, the display device may further include a board disposed on a printed circuit board, the board being disposed in an area other than the mounting area and the vibration device placement area.

[0346] According to some embodiments of this disclosure, the display device may further include a first pattern disposed on a printed circuit board, the first pattern including at least one or more recesses, holes or protrusions.

[0347] According to some embodiments of this disclosure, the first pattern may include at least two or more different shapes of one or more grooves, holes or protrusions.

[0348] According to some embodiments of this disclosure, the first pattern may be configured to surround the second vibrating device.

[0349] According to some embodiments of the present disclosure, each of the first vibration device and the second vibration device may include a piezoelectric vibration portion, and the piezoelectric vibration portion may include: a plurality of inorganic material portions having piezoelectric properties; and an organic material portion situated between the plurality of inorganic material portions.

[0350] According to some embodiments of this disclosure, multiple organic material portions can be provided, and multiple organic material portions and multiple inorganic material portions can be arranged alternately and repeatedly.

[0351] According to some embodiments of this disclosure, the width of each of the plurality of organic material portions may gradually decrease in the direction from the central portion of the piezoelectric vibrating portion to the two peripheries.

[0352] According to some embodiments of the present disclosure, a printed circuit board may include: a first printed circuit board including a first periphery connected to a display panel; a second printed circuit board connected to a first portion of the first printed circuit board via a first connecting member, and a third vibration device disposed at the second printed circuit board; and a third printed circuit board connected to a second portion of the first printed circuit board via a second connecting member, and a fourth vibration device disposed at the third printed circuit board.

[0353] According to some embodiments of this disclosure, the first connecting member and the second connecting member can be bent to the front and rear surfaces of the first printed circuit board.

[0354] According to some embodiments of this disclosure, the second and third printed circuit boards can be configured to face the display panel in a left-front direction or a right-front direction.

[0355] According to some embodiments of this disclosure, a plurality of first printed circuit boards may be provided, and the plurality of first printed circuit boards may be arranged at certain intervals along a first portion of the display panel, and the second and third printed circuit boards may be respectively provided at the first printed circuit boards located on both sides of the plurality of first printed circuit boards.

[0356] According to some embodiments of this disclosure, a second printed circuit board may be disposed on the left side of a first printed circuit board on the left side in a forward direction relative to the display panel, and a third printed circuit board may be disposed on the right side of a first printed circuit board on the right side in a plurality of first printed circuit boards.

[0357] According to some embodiments of this disclosure, each of the third vibration device and the fourth vibration device may include a piezoelectric vibration portion, and the piezoelectric vibration portion may include: a plurality of inorganic material portions having piezoelectric properties; and an organic material portion between the plurality of inorganic material portions.

[0358] According to some embodiments of this disclosure, the display device may further include a fourth component disposed on the rear surface of the printed circuit board; and a fifth component disposed on the rear surface of the fourth component, wherein the second vibration device may be disposed on the fifth component.

[0359] According to some embodiments of this disclosure, the printed circuit board can be configured to vibrate based on the vibration of the second vibration device to generate sound, and the vibration of the second vibration device can be transmitted to the printed circuit board along the fourth and fifth components.

[0360] According to some embodiments of this disclosure, the fourth component may include a first region located on the rear surface of the printed circuit board; and a second region extending from the first region, wherein the fifth component may be disposed in the second region.

[0361] According to some embodiments of this disclosure, the fifth component may include a first portion disposed on the rear surface of a first region of the fourth component; a second portion disposed on the rear surface of a second region of the fourth component; and a third portion disposed between the first and second portions, wherein the second vibration device is disposed at the third portion.

[0362] According to some embodiments of this disclosure, the third portion may have curvature and may be recessed toward the fourth member.

[0363] According to some embodiments of this disclosure, the second vibration device may be configured to have a shape corresponding to the shape of the third part.

[0364] According to some embodiments of this disclosure, the third part can be configured to vibrate based on the vibration of the second vibration device to generate sound.

[0365] According to some embodiments of this disclosure, the third part may also include a second pattern.

[0366] According to some embodiments of this disclosure, the second pattern may include a plurality of grooves arranged in a line shape, a strip shape, or a diagonal shape.

[0367] According to some embodiments of this disclosure, the second pattern may include multiple groups, and one or more of the depth, width, and spacing of the second pattern included in one of the multiple groups may be the same, and one or more of the depth, width, and spacing of the second pattern included in different groups may be different.

[0368] It will be apparent to those skilled in the art that various modifications and variations can be made to this disclosure without departing from the technical spirit or scope thereof. Therefore, it is contemplated that embodiments of this disclosure cover modifications and variations thereof, provided they fall within the scope of the appended claims and their equivalents.

[0369] Cross-reference to related applications

[0370] This application claims the benefit of Korean Patent Application No. 10-2020-0090311, filed on July 21, 2020, which is incorporated herein by reference as if fully set forth herein.

Claims

1. A display device, the display device comprising: Display panel, the display panel being configured to display images; The circuit section includes a printed circuit board connected to the display panel; A first vibration device is disposed on the rear surface of the display panel; A second vibration device is disposed on the rear surface of the printed circuit board; as well as A first component, configured to accommodate the display panel and the circuitry. The printed circuit board is positioned spaced apart from the sides of the display panel and is not located on the rear surface of the display panel. The first component includes a first structure disposed on the rear surface of the display panel and the rear surface of the circuit section, and The first structure includes: A first part, the first part being configured to correspond to the display panel; and The second part is configured at an angle relative to the first part to correspond to the printed circuit board.

2. The display device according to claim 1, further comprising a second component configured to cover the upper portion of the first component and one or more peripheries of the front surface of the display panel. in, In the second component, one or more sound emission holes are disposed in the area overlapping with the second vibration device.

3. The display device according to claim 2, wherein, The first vibration device is configured to cause the display panel to vibrate to produce a first sound, and The second vibration device is configured to cause the printed circuit board to vibrate to produce a second sound.

4. The display device according to claim 3, wherein, The second sound has a frequency of pitch bands that are different from those of the first sound.

5. The display device according to claim 3, wherein, The second sound has the same frequency of the pitch vocal cords as the first sound.

6. The display device according to claim 3, wherein, The first sound is configured to be output in the forward direction of the display panel, and The second sound is configured to be output in the front-upward direction of the display panel.

7. The display device according to claim 2, wherein, The printed circuit board is configured at an angle relative to the display panel.

8. The display device according to claim 7, wherein, The printed circuit boards are arranged in multiple configurations, and these multiple printed circuit boards are arranged at certain intervals along one side of the display panel. The plurality of printed circuit boards are arranged at the same angle toward the front-upward direction of the display panel, or at different angles toward the front-upward direction of the display panel.

9. The display device according to claim 7, wherein, The display panel includes pads disposed on a peripheral portion, and The circuit section also includes at least one or more flexible circuit films connected between one side of the printed circuit board and the pad section.

10. The display device according to claim 2, wherein, The second portion extends from the first portion and bends in the front-upward direction of the display panel.

11. The display device according to claim 2, further comprising a hinge portion disposed between the first portion and the second portion. in, Each of the first portion and the second portion is connected to the hinge portion, and the second portion is rotatable relative to the hinge portion in the front-upward direction of the display panel.

12. The display device according to claim 11, wherein, The area of ​​the second component that overlaps with the display panel is spaced apart from the display panel.

13. The display device according to claim 11, wherein, The area of ​​the second component that overlaps with the display panel is spaced apart from the display panel by a height.

14. The display device according to claim 11, further comprising a third component disposed on the front surface of the display panel. in, The area where the second component overlaps with the third component is spaced apart from the third component.

15. The display device according to claim 11, further comprising a third component disposed on the front surface of the display panel. in, The area of ​​the second member that overlaps with the third member is spaced apart from the third member by a height, the height being configured to prevent the third member from contacting the first member when the second part rotates.

16. The display device according to any one of claims 2 to 15, wherein, The first component includes a groove configured to receive each of the first vibration device and the second vibration device.

17. The display device according to any one of claims 2 to 15, further comprising a board disposed on the printed circuit board, in, The plate is placed in an area other than the installation area and the vibration device installation area.

18. The display device according to any one of claims 2 to 15, further comprising a first pattern disposed on the printed circuit board. in, The first pattern includes at least one or more grooves, holes, and protrusions.

19. The display device according to claim 18, wherein, The first pattern is set to surround the second vibrating device.

20. The display device according to claim 18, wherein, The first pattern includes at least two or more different shapes of the one or more grooves, holes and protrusions.

21. The display device according to any one of claims 2 to 15, wherein, Each of the first vibration device and the second vibration device includes a piezoelectric vibration component.

22. The display device according to any one of claims 2 to 15, wherein: Each of the first vibration device and the second vibration device includes a piezoelectric vibration component, and The piezoelectric vibration component includes: Multiple inorganic material portions, wherein the multiple inorganic material portions have piezoelectric properties; and An organic material portion, which is located between the plurality of inorganic material portions.

23. The display device according to claim 22, wherein, The organic material portion is configured as a plurality of portions, and the plurality of organic material portions and the plurality of inorganic material portions are arranged alternately and repeatedly.

24. The display device according to claim 22, wherein, The width of each of the multiple organic material portions gradually decreases in the direction from the central portion of the piezoelectric vibrating portion to the two peripheries.

25. The display device according to any one of claims 2 to 15, further comprising a third vibration device and a fourth vibration device. in, The printed circuit board includes: A first printed circuit board, the first printed circuit board including a first periphery connected to the display panel; A second printed circuit board, the second printed circuit board being connected to a first portion of the first printed circuit board via a first connecting member; and A third printed circuit board is connected to a second portion of the first printed circuit board via a second connecting member, and The third vibration device is located at the second printed circuit board, and the fourth vibration device is located at the third printed circuit board.

26. The display device according to claim 25, wherein, The first connecting member and the second connecting member are bent to the front and rear surfaces of the first printed circuit board.

27. The display device according to claim 25, wherein, The second printed circuit board and the third printed circuit board are configured to face the display panel in either the left-front direction or the right-front direction.

28. The display device according to claim 25, wherein, The first printed circuit board is configured as a plurality of such boards, and the plurality of first printed circuit boards are arranged at certain intervals along one side of the display panel. The second printed circuit board and the third printed circuit board are respectively disposed on the first printed circuit boards located on both sides among the plurality of first printed circuit boards.

29. The display device according to claim 28, wherein, The second printed circuit board is disposed on the left side of the first printed circuit board in the forward direction relative to the display panel, and... The third printed circuit board is disposed on the right side of the first printed circuit board on the right side among the plurality of first printed circuit boards.

30. The display device according to claim 25, wherein, Each of the third and fourth vibration devices includes a piezoelectric vibration component.

31. The display device according to claim 25, wherein, Each of the third and fourth vibration devices includes a piezoelectric vibration component, and The piezoelectric vibration component includes: Multiple inorganic material components exhibiting piezoelectric properties; and The organic material portion between the plurality of inorganic material portions.

32. The display device according to any one of claims 2 to 15, further comprising: A fourth component is disposed on the rear surface of the printed circuit board; as well as The fifth component is disposed on the rear surface of the fourth component. The second vibration device is located at the fifth component.

33. The display device according to claim 32, wherein, The printed circuit board is configured to vibrate based on the vibration of the second vibration device to generate sound, and The vibration of the second vibration device is transmitted to the printed circuit board along the fourth and fifth components.

34. The display device according to claim 32, wherein, The fourth component includes: A first region, located on the rear surface of the printed circuit board; and The second region extends from the first region, and the fifth component is disposed in the second region.

35. The display device according to claim 34, wherein, The fifth component includes: The first part is disposed on the rear surface of the first region of the fourth member; The second part is disposed on the rear surface of the second region of the fourth member; and The third part is located between the first part and the second part, and the second vibration device is disposed at the third part.

36. The display device according to claim 35, wherein, The third part has curvature and is recessed toward the fourth member.

37. The display device according to claim 36, wherein, The second vibration device is configured to have a shape corresponding to the shape of the third part.

38. The display device according to claim 35, wherein, The third part is configured to vibrate based on the vibration of the second vibration device to produce sound.

39. The display device according to claim 35, wherein, The third part also includes a second pattern.

40. The display device according to claim 39, wherein, The second pattern includes a plurality of grooves arranged in a line shape, a strip shape, or a diagonal shape.

41. The display device according to claim 39, wherein, The second pattern comprises multiple groups, and One or more of the depth, width, and spacing of the second pattern included in one of the plurality of groups are the same, and one or more of the depth, width, and spacing of the second pattern included in different groups of the plurality of groups are different.

Images