KR20190061862A - Display apparatus - Google Patents

Abstract

According to an embodiment of the present application, a display apparatus comprises: a display module for displaying an image; a rear structure supporting the display module; a vibration generation apparatus for vibrating the display module; and a sound reflection unit arranged on a side surface of the display module. By preventing a decrease of a sound pressure level (SPL) in a high-frequency region, the sound quality of a sound output to the front of a display panel can be improved.

Description

Display device {DISPLAY APPARATUS}

The present application relates to a display device.

[0002] Recently, as the information age has come to the information age, a display field for visually representing electrical information signals has been rapidly developed. In response to this, various display apparatuses having excellent performance such as thinning, light weight, Is being developed. Specific examples of such a display device include a liquid crystal display device, a field emission display device, and an organic light emitting display device.

Generally, the display device displays an image entirely on the display panel, but a separate speaker must be installed to provide sound. When the speaker is installed in the display device, the direction of the sound generated through the speaker is the side edge or the upper and lower edges of the display panel, not the front or back side of the display panel on which the image is displayed. There is a problem in that the viewer is prevented from being immersed in the image because the sound does not proceed.

When a speaker included in a set device such as a TV or the like is constituted, the speaker occupies a certain space, so that there arises a problem that the design and the space arrangement of the set device are restricted. In order to solve such a problem, although the previous display device can output sound to the front of the display panel through the vibration of the display panel, the vibration transmitting ability of the display panel in the high frequency range is lowered, I have a problem.

Further, the vibration transmission capability of the display panel is lowered to lower the sound pressure level (SPL), and the applied voltage is increased to reinforce the loss of the sound pressure level, thereby increasing the power consumption. In order to solve this problem, it is necessary to develop a display device for improving vibration transmission capability of a display panel in a high frequency range.

Accordingly, the inventors of the present application recognized the above-mentioned problems, and various experiments were conducted to improve the sound quality of the sound when the image was viewed from the front of the display panel, . Through various experiments, it is possible to generate sound such that the direction of sound progresses to the front of the display panel, and a new structure of a display device capable of improving sound quality is realized.

The present application aims to solve the problem of improving the sound quality of sounds output to the front of the display module by concentrating the sound radiated to the side of the display module in front of the display module by disposing the acoustic reflector on the side of the display module .

The present application aims to solve the problem of changing the vibration energy having the transverse wave characteristic to the longitudinal wave characteristic by disposing the acoustic reflective portion on the side surface of the display module.

The present application relates to a display module in which an acoustic reflector is disposed on a side surface of a display module to prevent decrease in sound pressure level (SPL) in a high frequency range, thereby improving the flatness of a sound pressure level in the entire frequency range, And to solve the problem.

The present application aims to prevent leakage of sound pressure to the rear of the display device by including the vibration absorbing member interposed between the rear structure and the vibration generating device.

The present application includes an oscillation absorbing member interposed between a depression of a rear structure and a vibration generating device to prevent sound pressure leakage to the rear of the display device to improve the sound pressure level SPL to the front of the display device This is a problem to be solved.

The solutions according to the present application are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

A display device according to the present application includes a display module for displaying an image, a rear structure supporting the display module, and a vibration generator for vibrating the display module, wherein the rear structure includes an acoustic reflector disposed on a side of the display module .

Specific details of other examples are included in the detailed description and drawings.

The display device according to the present application can generate sound such that the direction of sound progression is to the front of the display panel. Accordingly, it is possible to improve the immersion feeling of the viewer who watches the image of the display apparatus by matching the image and the sound generation position of the display apparatus.

In addition, the display device according to the present application can improve the sound quality of the sound outputted to the front of the display module by concentrating the sound radiated to the side of the display module toward the front side of the display module by disposing the acoustic reflector on the side surface of the display module have.

Further, the display device according to the present application can change the vibration energy having the transverse wave characteristic to the longitudinal wave characteristic by disposing the acoustic reflective portion on the side of the display module.

In addition, the display device according to the present application prevents an increase in the sound pressure level (SPL) in the high frequency range by arranging the acoustic reflector on the side surface of the display module, thereby improving the flatness of the sound pressure level in the entire frequency range The clarity of the sound can be improved.

Further, the display device according to the present application includes the vibration absorbing member interposed between the rear structure and the vibration generating device, thereby preventing the sound pressure leakage to the rear of the display device.

The display device according to the present application includes the vibration absorbing member interposed between the depressed portion of the rear structure and the vibration generating device to prevent the sound pressure leakage to the rear of the display device, (SPL) can be improved.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

The scope of the claims is not limited by the matters described in the contents of the invention, as the contents of the invention described in the problems, the solutions to the problems and the effects to be solved do not specify essential features of the claims.

1 is a perspective view of a display device according to a first embodiment of the present application.
2 is a diagram showing an acoustic output of a display device according to the first embodiment of the present application.
3 is a cross-sectional view taken along the line I-I 'of FIG.
4 is a view showing the area A in Fig.
5 is a view for explaining an acoustic reflector in the display device according to the first embodiment of the present application.
6 is a view for explaining an acoustic reflector in a display device according to the first embodiment of the present application.
7 is a perspective view of a display device according to a second embodiment of the present application.
8 is a cross-sectional view taken along line II-II 'of FIG.
9 is a view showing the area B in Fig.
10 is a view showing a coupling portion in the display device according to the second embodiment of the present application.
11 is a diagram showing acoustic output characteristics of a display device according to an example of the present application.

Brief Description of the Drawings The advantages and features of the present application, and how to accomplish them, will become apparent upon reference to the following detailed description, taken in conjunction with the accompanying drawings. It will be understood, however, that the invention is not limited to the examples disclosed herein but may be embodied in many different 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 concept of the invention to those skilled in the art. Are provided to fully disclose the scope of the invention, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, and the like described in the drawings for describing the example of the present application are illustrative, and thus the present invention is not limited thereto. Like reference numerals refer to like elements throughout the specification. In the description of the present application, a detailed description of known related arts will be omitted if it is determined that the gist of the present application may be unnecessarily obscured. In the case where the term "including", "having", or "being done" is used in the present application, other parts may be added unless "~" is used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

In interpreting the constituent elements, it is construed to include the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'on top', 'under', and 'next to' Or " direct " is not used, one or more other portions may be located between the two portions.

The first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

In describing the components of the present application, the terms first and second can be used. These terms are intended to distinguish the components from other components, and the terms do not limit the nature, order, order, or number of the components. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; intervening " or that each component may be " connected, " " coupled, " or " connected " through other components.

In the present application, the "display device" may include a display device such as a liquid crystal module (LCM) or an organic light emitting diode (OLED) module including a driving part for driving the display panel and the display panel . And other equipment such as notebook computers, televisions, computer monitors, automotive apparatus or other forms of vehicles, including complete products or final products including LCM, OLED modules, or a set electronic apparatus or set apparatus such as a mobile electronic apparatus such as a smart phone or an electronic pad.

Accordingly, the display device in the present application may include a narrow display device such as an LCM, an OLED module, etc., and a set device which is an application product including an LCM, an OLED module or the like, or a final consumer device.

In some cases, the LCM and the OLED module constituted by the display panel and the driving unit and the like may be represented by the narrow "display device", and the electronic device as the finished product including the LCM and the OLED module may be represented by the "set device" . For example, the display device of the consultation includes a display panel of liquid crystal (LCD) or organic light emitting (OLED) and a source PCB which is a control section for driving the display panel, and the set device is electrically connected to the source PCB, And a set PCB that is a set control unit that controls the entire system.

The display panel used in this example may be any type of display panel such as a liquid crystal display panel, an organic light emitting (OLED) display panel, and an electroluminescent display panel. The present invention is not limited to a specific display panel capable of generating sound by being vibrated by the sound generator. Further, the display panel used in the display device according to the example of the present invention is not limited to the shape and size of the display panel.

For example, when the display panel is a liquid crystal display panel, it includes a plurality of gate lines and data lines, and pixels formed at intersections of the gate lines and the data lines. An array substrate including a thin film transistor serving as a switching element for adjusting light transmittance in each pixel, an upper substrate including a color filter and / or a black matrix, and a liquid crystal layer formed between the array substrate and the upper substrate As shown in FIG.

When the display panel is an organic light emitting (OLED) display panel, it may include a plurality of gate lines, data lines, and pixels formed at intersections of the gate lines and the data lines. An array substrate including a thin film transistor which is a device for selectively applying a voltage to each pixel, an organic light emitting element (OLED) layer on the array substrate, and an encapsulating substrate Or an encapsulation substrate, or the like. The sealing substrate protects the thin film transistor, the organic light emitting element layer, and the like from external impact and can prevent water or oxygen from penetrating into the organic light emitting element layer. In addition, the layer formed on the array substrate may include an inorganic light emitting layer, for example, a nano-sized material layer or a quantum dot.

The display panel may further include a backing such as a metal plate attached to the display panel. The present invention is not limited to the metal plate but may include other structures.

Each of the features of the various embodiments of the present application may be combined or combined with each other partially or entirely, technically various interlocking and driving are possible, and the examples may be independently performed with respect to each other, .

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings and examples.

1 is a perspective view of a display device according to a first embodiment of the present application. FIG. 2 is a view showing an acoustic output of a display device according to a first embodiment of the present application, and FIG. 3 is a sectional view taken along the line I-I 'of FIG.

1 to 3, a display device 10 includes a display module 100, a vibration generator 200, a rear structure 300, an acoustic reflector 400, and an adhesive member 500 .

The display module 100 may include a display panel 110 and a backlight unit 120.

The display panel 110 displays images and can be implemented as any type of display panel such as a liquid crystal display panel, an organic light emitting (OLED) display panel, and an electroluminescent display panel. have.

 The display panel 110 includes a front surface on which an image is displayed and a rear surface to which light is irradiated from the backlight unit 120. According to one example, the display panel 110 is a liquid crystal display panel, and can display an image using light emitted from the backlight unit 120.

The display module 100 may further include an optical sheet portion 112 disposed on the rear surface of the display panel 110. The optical sheet unit 112 may be separated from the front surface of the backlight unit 120 while being attached to the rear surface of the display panel 110. The optical sheet unit 112 can be disposed on the rear surface of the display panel 110 to improve the brightness characteristics of light emitted from the backlight unit 120. According to one example, the optical sheet portion 112 may be a composite optical sheet having both a function of diffusing incident light and a function of condensing diffused light.

The backlight unit 120 may be spaced apart from the rear surface of the display panel 110 with respect to the thickness direction of the display panel 110 to irradiate light to the rear surface of the display panel 110. The backlight unit 120 may be spaced apart from the front surface of the rear structure 300 with respect to the thickness direction of the display panel 110. For example, the front surface of the backlight unit 120 faces the rear surface of the display panel 110, and the rear surface of the backlight unit 120 faces the front surface of the rear structure 300 have.

According to one example, the backlight unit 120 may receive the vibration of the vibration generating device 200 and transmit the vibration to the display panel 110. For example, the vibration generator 200 may vibrate in contact with a part of the back surface of the backlight unit 120 to vibrate the entire surface of the backlight unit 120. The vibration of the backlight unit 120 can be transmitted to the display panel 110 through the gap space 130S between the display panel 110 and the backlight unit 120 and the module adhesive member 130. [

The backlight unit 120 may include a light guide plate 121 and a reflective sheet 123.

The light guide plate 121 may be disposed on a front surface of the reflective sheet 123 to form a front surface of the backlight unit 120. For example, the light guide plate 121 may be disposed on the rear surface of the display panel 110 while having a light incidence surface. The light guide plate 121 can change the traveling direction of light incident through the light incidence surface to the display panel 110 side. According to one example, the light guide plate 121 may include a light-transmitting plastic or glass material. For example, the light guide plate 121 may be a sapphire glass, but the present invention is not limited thereto and can be realized by a glass for light guide.

The reflective sheet 123 constitutes the back surface of the backlight unit 120 and can be connected to the vibration generator 200. For example, the reflective sheet 123 can support the light guide plate 121 disposed on the front surface of the reflective sheet 123, and can reflect light incident from the light guide plate 121. Accordingly, the reflective sheet 123 can prevent the light incident from the light guide plate 121 from being emitted to the back of the backlight unit 120, and uniformly emit the light emitted toward the front of the backlight unit 120.

The display module 100 may further include a module adhesive member 130. For example, the module adhesive member 130 may be interposed between the front edge of the backlight unit 120 and the rear edge of the display panel 110. The module adhesive member 130 may be coupled to the backlight unit 120 and the display panel 110 to separate the display panel 110 and the backlight unit 120 from each other. For example, the module adhesive member 130 may provide a gap space 130S between the rear surface of the display panel 110 and the front surface of the backlight unit 120. [ The backlight unit 120 can receive vibration from the vibration generator 200 and the display panel 110 can receive vibration from the backlight unit 120 through the negative pressure of the gap space 130S. The gap space 130S formed between the display panel 110 and the backlight unit 120 can prevent the light bulging of the backlight unit 120 to improve the uniformity of light luminance of the display device 10. [ have.

According to one example, the module adhesive member 130 may have a four-sided sealing structure or a closed-loop sealing structure. The module adhesive member 130 covers the gap space 130S formed between the display panel 110 and the backlight unit 120 so that the negative pressure generated from the backlight unit 120 is transmitted to the display panel 110 can do. The module adhesive member 130 may also transmit the vibration of the backlight unit 120 directly to the display panel 110. [

For example, the module adhesive member 130 may include an acrylic-based material or a urethane-based material. Here, the module adhesive member 130 has relatively high adhesive strength and high hardness so that the vibration of the backlight unit 120 among the acrylic-based material and the urethane-based material can be transmitted to the display panel 110 Acrylic materials. In this case, the module adhesive member 130 may include a foam pad including an acrylic-based material, and an adhesive layer provided on each of the front and rear sides of the foam pad.

As another example, the urethane-based material has a relatively excellent light-shielding property as compared with the acrylic-based material. Therefore, when the light leakage prevention is considered, the module-bonding member 130 may include a urethane-based material.

The vibration generating device 200 may be disposed on the rear surface of the display module 100 to vibrate the display module 100. For example, the vibration generator 200 may be fixed to the rear structure 300, and may vibrate the display panel 110 through the backlight unit 120 to output sound toward the front of the display panel 110. [ For example, the vibration generator 200 can generate sound by using the display panel 110, which is vibrated together with the vibration of the backlight unit 120, as a diaphragm.

The vibration generating device 200 can directly vibrate the backlight unit 120 by contacting the back surface of the backlight unit 120 through the rear structure 300. [ The upper portion of the vibration generating device 200 is inserted into the through hole 310 provided in the rear structure 300 and connected to the back surface of the backlight unit 120, And may be fixed in contact with the rear surface of the structure 300. Accordingly, the vibration generating apparatus 200 can vibrate the backlight unit 120 by vibrating according to a vibration signal corresponding to an acoustic signal related to the image with the rear structure 300 as a support, and the display panel 110 It is possible to receive the vibration of the backlight unit 120 and output sound to the front. Accordingly, the display device 10 uses the display panel 110, which vibrates through the backlight unit 120, as a diaphragm of the acoustic device to output sound to the front rather than to the rear and the lower side of the display panel 110, It is possible to improve the immersion feeling of the viewer who watches the video of the display device 10 by matching the video and sound generation positions of the display device 10 with each other.

According to one example, the vibration generating device 200 may include first and second sound generating modules 210 and 220 for vibrating different areas of the display panel 110. For example, each of the first and second sound generating modules 210 and 220 may be fixed through the rear structure 300 and spaced apart from each other. For example, the display panel 110 may include a left area and a right area, the first sound generating module 210 may overlap the left area of the display panel 110, May be superimposed on the right area of the display panel 110. The first sound generating module 210 is disposed on the left side of the back surface of the backlight unit 120 to vibrate the left area of the display panel 110 and the second sound generating module 220 vibrates the left area of the back panel of the backlight unit 120 And the right area of the display panel 110 can be vibrated. Each of the first and second sound generating modules 210 and 220 may be independently driven by receiving different vibration signals. For example, the first sound generating module 210 generates sound by using the left region of the display panel 110, which is vibrated together with the vibration of the backlight unit 120, as a diaphragm, A sound can be generated by using the right region of the display panel 110 as a diaphragm.

According to one example, the vibration generating device 200 may be disposed in an area adjacent to an edge of the display module 100. For example, the vibration in the low frequency region generated by the sound generating module 210 is transmitted to the backlight unit 120, the gap space 130S between the display panel 110 and the backlight unit 120, So that the sound (LFS) in the low frequency region can be output to the front (FD) of the display panel 110. The vibration in the high frequency region generated in the vibration generating device 200 is sequentially transmitted to the edge of the backlight unit 120, the module bonding member 130, and the display panel 110, Can be output to the front (FD) of the display panel (110). The vibration in the high frequency region generated by the vibration generator 200 is emitted to the side of the backlight unit 120 and is reflected by the acoustic reflection unit 400 so that the sound HFS in the high frequency region is reflected on the display panel 110 And can be outputted forward. Accordingly, the vibration in the low frequency region is transmitted to the gap space 130S between the display panel 110 and the backlight unit 120, but the vibration in the high frequency region is transmitted to the module bonding member 130 through the edge of the backlight unit 120 Or may be emitted to the side of the backlight unit 120. As such, when the sound generating module 210 is far away from the edge of the display module 100, the vibration transmission path in the high frequency range may be extended to reduce the sound pressure level SPL in the high frequency range. Accordingly, the sound generating module 210 is disposed in an area adjacent to the edge of the display module 100, thereby minimizing the length of the vibration transmission path in the high frequency area, thereby preventing a decrease in the sound pressure level SPL in the high frequency area. Therefore, when the vibration generating device 200 is disposed in an area adjacent to the edge of the display module 100, the display device 10 can display a sound pressure lower than that of the vibration generating device 200 when the vibration generating device 200 is far away from the edge of the display module 100. [ (HFS) in a high-frequency region having a high level (SPL).

According to one example, the vibration generating device 200 may be arranged to minimize the length of the vibration transmission path of the high frequency region, while ensuring the design freedom of the display device 10 without reducing the rigidity of the rear structure 300 have. For example, the vibration generating device 200 can be inserted into the through hole 310 of the rear structure 300, and the position of the through hole 310 can be arranged so as not to reduce the rigidity of the rear structure 300 have. The through hole 310 can not be completely overlapped with the edge of the display module 100 because the rigidity of the rear structure 300 can be reduced if the through hole 310 is too close to the adhesive member 500 . If the through hole 310 is disposed at the edge of the display module 100 so that the vibration generating device 200 is exposed to one side of the display device 10, the degree of freedom in designing the display device 10 may be reduced have. Therefore, the through-hole 310 can be disposed closest to the edge of the display module 100 within a range that does not reduce the rigidity of the rear structure 300. The vibration generating device 200 may be disposed so as not to be exposed to one side of the display device 10, thereby improving the degree of freedom of design of the display device 10. Therefore, the vibration generating device 200 can be installed in the through hole 310 so as to minimize the rigidity of the rear structure 300 and to minimize the design freedom of the display device 10 and to minimize the length of the vibration transmission path in the high- Can be placed according to the position.

According to one example, the vibration generator 200 may be a speaker, a sound actuator, a sound exciter, or a piezoelectric element, but is not limited thereto. And outputting sound.

The backside structure 300 may surround the backside of the backlight unit 120. For example, the rear structure 300 may cover the entire rear surface of the backlight unit 120, and may have a flat plate shape made of a glass material, a metal material, or a plastic material. Here, the edge or sharp edge portion of the back surface structure 300 may have a slope shape or a curved shape by a chamfering process or a corner rounding process. According to one example, the backside structure 300 of the glass material may include a sapphire glass. For example, the rear structure 300 made of a metal may be made of any one of aluminum, an aluminum alloy, a magnesium alloy, and an alloy of iron and nickel. For example, the back surface structure 300 may have a laminated structure of a glass plate having a relatively thinner thickness than the metal plate and the glass plate and facing the back surface of the backlight unit 120. In this case, 10 may be used as a mirror surface by a metal plate.

The rear structure 300 may include a through hole 310 into which the vibration generating device 200 is inserted. For example, the through hole 310 may be formed to have a circular or polygonal shape in a predetermined area of the rear structure 300 along the thickness direction of the rear structure 300, for insertion of the vibration generating device 200 . The through hole 310 can not completely overlap the edge of the display module 100 to maintain the rigidity of the rear structure 300 and the reliability of the display device 10, The vibration generating device 200 may be disposed adjacent to an edge of the display module 100 to the extent that the rigidity of the display module 100 is maintained.

The acoustic reflector 400 may be disposed on a side surface of the display module 100 to reflect the sound emitted from the side surface of the display module 100 to the front side FD of the display module 100. For example, the acoustic reflector 400 may protrude from the side surface of the rear structure 300 and be bent forward of the display module 100. Here, the acoustic reflector 400 may be bent in a curved shape having a constant radius of curvature from the edge of the rear surface structure 300, but is not limited thereto. The sound emitted from the side of the display module 100 may correspond to a vibration energy having a transverse wave characteristic. The acoustic reflector 400 can prevent leakage of sound pressure in the lateral direction of the display module 100 by changing the vibration energy having the transverse wave characteristic to the longitudinal wave characteristic. Therefore, the acoustic reflector 400 reflects the sound traveling in the lateral direction of the display module 100 to the front (FD) of the display module 100, thereby allowing the sound pressure level (SPL) Loss can be prevented, thereby improving the flatness of the sound pressure level in the entire frequency range and improving the clarity of the sound.

The inner surface of the acoustic reflector 400 may be opposed to the side surface of the display module 100. The inner surface of the acoustical reflector 400 may also be opposed to the front surface of the display module 100. For example, when the inner surface of the acoustic reflector 400 is parallel to the side surface of the display module 100, the sound emitted from the side of the display module 100 is reflected again toward the side surface of the display module 100 . If the sound is reflected again toward the side of the display module 100, it is not possible to prevent a decrease in the sound pressure level SPL. Thus, the acoustic reflector 400 has an inclined inner surface and a side surface of the display module 100 to reflect sound emitted from the side of the display module 100 to the front (FD) of the display module 100 .

According to one example, the inner surface of the acoustic reflector 400 may be formed at an angle of 110 to 160 degrees from the edge of the rear structure 300. For example, if the inner surface of the acoustic reflector 400 is tilted 90 degrees from the edge of the rear structure 300, the inner surface of the acoustic reflector 400 may be parallel to the side surface of the display module 100, The inner surface of the acoustic reflector 400 may be parallel to the front surface of the display module 100 if the inner surface of the acoustic reflector 400 is inclined by 180 degrees from the edge of the rear surface structure 300. Here, when the inner surface of the acoustic reflector 400 is parallel to the side surface of the display module 100, the sound emitted from the side surface of the display module 100 may be reflected again toward the side surface of the display module 100 And the inner surface of the acoustic reflector 400 is parallel to the front surface of the display module 100, the sound emitted from the side of the display module 100 can not be reflected. When the angle between the inner surface of the acoustic reflector 400 and the edge of the rear structure 300 is 90 degrees or 180 degrees, the sound emitted from the side of the display module 100 is reflected toward the front of the display module 100 (FD). The inner surface of the acoustical reflector 400 is positioned at an angle ranging from 110 deg. To 110 deg. From the edge of the back surface structure 300 to reflect the sound emitted from the side surface of the display module 100 to the front (FD) It can be formed to be inclined at 160 degrees.

According to one example, the acoustic reflector 400 may be made of the same material as the rear structure 300. The acoustic reflector 400 may be integrally formed with the rear structure 300 or the acoustic reflector 400 may be separately formed and then coupled to the rear structure 300. The acoustic reflector 400 may be made of a glass material, a metal material, or a plastic material, but is not limited thereto. For example, the rear structure 300 may be made of at least one material selected from the group consisting of a glass material, a metal material, and a plastic material. However, the present invention is not limited thereto. ≪ / RTI >

According to another example, the acoustical reflector 400 may be made of a material different from the back surface structure 300. The acoustic reflector 400 may be formed through a separate heat treatment process or a chemical process in the process of being integrally formed with the rear structure 300. Alternatively, the acoustic reflector 400 may be formed separately from the rear structure 300, Can be combined. The acoustic reflector 400 may be made of a glass material, a metal material, or a plastic material, but is not limited thereto. For example, the rear structure 300 may be made of at least one material selected from the group consisting of a glass material, a metal material, and a plastic material, and the acoustic reflector 400 may be formed of a material other than the rear structure 300 ≪ / RTI >

The adhesive member 500 may be disposed between the edge of the display module 100 and the edge of the backside structure 300 to adhere the display module 100 and the backside structure 300. Specifically, the adhesive member 500 may be interposed between the backlight unit 120 and the backside structure 300 to have a constant thickness (or height), and may have a four-sided sealing structure or a closed-loop sealing structure . The adhesive member 500 is provided between the rear edge of the backlight unit 120 and the front edge of the rear structure 300 to connect the rear structure 300 to the rear surface of the backlight unit 120, A gap space 500S may be provided between the front surfaces of the rear structure 300. [ Here, the gap space 500S can be used as a space for inserting the vibration generator 200 and a space for vibration of the back surface structure 300 and the backlight unit 120 according to the driving of the vibration generator 200 . The gap space 500S formed between the backlight unit 120 and the rear structure 300 can prevent the light leaks of the backlight unit 120 and thereby improve the uniformity of light luminance of the display device 10. [ .

According to one example, the adhesive member 500 may include a foam pad including an acrylic-based material, and an adhesive layer provided on each of the front and back sides of the foam pad.

According to one example, the adhesive member 500 may be an optically clear adhesive (OCR), an optically clear adhesive film (OCA), or a double-sided tape.

4 is a view showing the area A in Fig.

Referring to FIG. 4, the vibration generator 200 may be disposed in an area adjacent to an edge of the display module 100. For example, the vibration in the low frequency region generated by the sound generating module 210 is transmitted to the backlight unit 120, the gap space 130S between the display panel 110 and the backlight unit 120, So that the sound (LFS) in the low frequency region can be output to the front (FD) of the display panel 110. The vibration in the high frequency region generated in the vibration generating device 200 is sequentially transmitted to the edge of the backlight unit 120, the module bonding member 130, and the display panel 110, Can be output to the front (FD) of the display panel (110). The vibration in the high frequency region generated by the vibration generator 200 is emitted to the side of the backlight unit 120 and is reflected by the acoustic reflection unit 400 so that the sound HFS in the high frequency region is reflected on the display panel 110 And can be outputted forward. Accordingly, the vibration in the low frequency region is transmitted to the gap space 130S between the display panel 110 and the backlight unit 120, but the vibration in the high frequency region is transmitted to the module bonding member 130 through the edge of the backlight unit 120 Or may be emitted to the side of the backlight unit 120. As such, when the sound generating module 210 is far away from the edge of the display module 100, the vibration transmission path in the high frequency range may be extended to reduce the sound pressure level SPL in the high frequency range. Accordingly, the sound generating module 210 is disposed in an area adjacent to the edge of the display module 100, thereby minimizing the length of the vibration transmission path in the high frequency area, thereby preventing a decrease in the sound pressure level SPL in the high frequency area. As a result, when the vibration generating device 200 is disposed in an area adjacent to the edge of the display module 100, the display device 10 can be prevented from being detached from the display device 100 when the vibration generating device 200 is far away from the edge of the display module 100 (HFS) in a high frequency range where the sound pressure level (SPL) is high.

If the acoustic reflector 400 is not disposed on the side surface of the backlight unit 120 serving as the diaphragm, the sound HFS in the high frequency range is equal to the sound pressure level SPL emitted to the side surface of the backlight unit 120 Sound pressure level (SPL) loss can occur. Therefore, the acoustic reflector 400 reflects the sound emitted from the side surface of the backlight unit 120 to the front (FD) of the display module 100, thereby allowing the sound (HFS) in the high frequency range with a high sound pressure level (SPL) It is possible to improve the flatness of the sound pressure level in the entire frequency range.

The angle formed by the inner surface of the acoustic reflector 400 and the edge of the rear surface structure 300 may determine the direction of the sound reflected toward the front of the display module 100. For example, depending on the angle formed by the inner surface of the acoustic reflector 400 and the edge of the rear surface structure 300, the acoustic reflector 400 may transmit sound emitted from the side of the display module 100 to the display module 100 (FD) of the left side or the front side of the left side or the front side of the left side. Thus, the acoustic reflector 400 can transmit sound to a specific point in the front (FD) of the display module 100 by adjusting the angle formed by the inner surface of the acoustic reflector 400 and the edge of the rear structure 300.

According to one example, the inner surface of the acoustic reflector 400 may be formed at an angle of 110 to 160 degrees from the edge of the rear structure 300. For example, when the angle between the inner surface of the acoustic reflector 400 and the edge of the rear surface structure 300 is 90 degrees or 180 degrees, the sound emitted from the side of the display module 100 is reflected by the display module 100, It can not be reflected to the front FD. The inner surface of the acoustical reflector 400 is positioned at an angle ranging from 110 deg. To 110 deg. From the edge of the back surface structure 300 to reflect the sound emitted from the side surface of the display module 100 to the front (FD) It can be formed to be inclined at 160 degrees.

According to an example, the angle? 1 formed by the lower end of the inner surface of the acoustic reflector 400 with the edge of the rear structure 300 may correspond to 110 to 160 degrees. The second point of the inner surface of the acoustic reflector 400 and the angle? 2 formed by the first point of the inner surface of the acoustic reflector 400 with the edge of the rear surface structure 300, The angle? 3 with the edge may correspond to 110 degrees to 160 degrees. Here, the first point corresponds to a point at which the sound emitted from the side of the reflective sheet 123 reaches the inner surface of the acoustically reflecting portion 400, and the second point corresponds to the point at which the acoustic emitted from the side surface of the light guide plate 121 But the present invention is not limited thereto. For example, the acoustic reflector 400 may be bent to the front (FD) of the display module 100, so that an angle formed between each point on the inner surface of the acoustic reflector 400 and the edge of the rear structure 300 May be different. At this time, the angle? 2 formed by the first point of the inner surface of the acoustic reflector 400 with the edge of the rear surface structure 300 and the second point of the inner surface of the acoustic reflector 400 form the rear surface structure 300, The acoustic reflector 400 focuses the sound reflected at each of the first and second points to at least one point out of the front (FD) of the display module 100, .

For example, the angle formed by a portion of the inner surface of the acoustic reflector 400 with the edge of the rear structure 300 may be the same. At this time, the angle? 2 formed by the first point of the inner surface of the acoustic reflector 400 with the edge of the rear surface structure 300 and the second point of the inner surface of the acoustic reflector 400 form the rear surface structure 300, The acoustic reflector 400 can transmit the sound reflected from each of the first and second points in parallel to the front (FD) of the display module 100. In this case, The angle formed by the inner surface of the acoustic reflector 400 with the edge of the rear structure 300 is in the range of 110 to 160 degrees so that the acoustic reflector 400 is exposed at the side of the display module 100 The sound can be reflected to the front (FD) of the display module 100 to prevent the decrease of the sound pressure level (SPL) in the high frequency range.

5 is a view for explaining an acoustic reflector in the display device according to the first embodiment of the present application.

Referring to FIG. 5, the acoustic reflector 400 may reflect the sound emitted from the side of the display module 100 and focus the sound to at least one point P in front of the display module 100. For example, the backlight unit 120 may receive vibrations directly from the vibration generator 200 and may serve as a diaphragm. The backlight unit 120 may include a light guide plate 121 and a reflective sheet 123 made of different materials. have. Here, since the light guide plate 121 and the reflective sheet 123 form a laminated structure, the side surfaces of the light guide plate 121 and the reflective sheet 123 respectively have the same height as the different points on the inner surface of the acoustic reflector 400 Lt; / RTI > In other words, the sound emitted from the side surface of the reflective sheet 123 reaches the first point on the inner surface of the acoustic reflective portion 400, and the sound emitted from the side surface of the light guide plate 121 is reflected by the surface of the acoustic reflective portion 400 It is possible to reach the second point on the inner side. The second point of the inner surface of the acoustic reflector 400 and the angle? 2 formed by the first point of the inner surface of the acoustic reflector 400 with the edge of the rear surface structure 300, The angle? 3 with the edge may be different from each other so that the acoustic reflector 400 can focus the reflected sound to at least one point P of the front (FD) of the display module 100. The angle? 4 at which the sound emitted from the side surface of the reflective sheet 123 is reflected by the acoustic reflective portion 400 and the angle? 4 at which the acoustic emitted from the side surface of the light guide plate 121 is reflected by the acoustic reflective portion 400 5 may be different from each other so that the acoustic reflector 400 can focus the reflected sound to at least one point P of the front side FD of the display module 100. [ Accordingly, the acoustic reflector 400 can concentrate sound at at least one point P out of the front (FD) of the display module 100, so that a sound having a high sound pressure level (SPL) in the high- .

6 is a view for explaining an acoustic reflector in a display device according to the first embodiment of the present application.

Referring to FIG. 6, the acoustic reflector 400 may protrude from the side surface of the rear structure 300 and be bent forward of the display module 100. According to one example, the acoustic reflector 400 may be further separated from the side surface of the display module 100 from the lower portion to the upper portion. For example, the distance d2 between the upper portion of the acoustic reflector 400 and the side surface of the display module 100 is greater than the distance d1 between the lower portion of the acoustic reflector 400 and the side surface of the display module 100 It can be long. Accordingly, the acoustic reflector 400 can be spaced further from the side of the display module 100 from the lower part to the upper part, and can emit sounds reaching different points emitted from the side surface of the display module 100, (FD). As a result, the acoustic reflector 400 can prevent the loss of the sound pressure level (SPL) in the high frequency range, thereby improving the flatness of the sound pressure level in the entire frequency range.

7 is a perspective view of a display device according to a second embodiment of the present application. FIG. 8 is a sectional view taken along the line II-II 'of FIG. 7, and FIG. 9 is a view showing a region B of FIG. The second embodiment of the present application differs from the first embodiment in the configuration of the rear structure 300, the vibration absorbing member 600, and the coupling portion 700. Hereinafter, the rear structure 300, The vibration absorbing member 600, and the coupling unit 700 will be mainly described, and redundant description of the remaining components will be omitted or briefly described.

7 to 9, the vibration generating device 200 includes a module frame 201, a side frame 202, a vibration unit 203, an outer frame 204, and a damper 205.

The module frame 201 may be disposed on the bottom surface 321 of the depression 320 to support the vibration generator 200. For example, the support frame 201 may be attached to the bottom surface 321 of the depressed portion 320 to fix and support the vibration unit 203. According to one example, the support frame 201 may be bonded to the bottom surface 321 of the depression 320 through the vibration-absorbing member 600. For example, the central portion of the module frame 201 can support the vibration unit 203, and the outer frame portion of the module frame 201 can support the side frame 202. [ The module frame 201 can control the magnetic flux formed through the magnet member 203a together with the upper plate 203b to increase the magnetic flux density flowing through the vibration unit 203 and improve the vibration characteristics .

The side frame 202 may be disposed on the module frame 201 and surround the lower portion of the vibration unit 203 at a distance. Specifically, the side frame 202 may be formed of a conductive material to control the magnetic flux generated in the magnet member 203a. For example, the side frame 202 surrounds the magnet member 203a so as to surround the magnet member 203a, thereby concentrating the magnetic flux generated in the magnet member 203a into the vibration unit 203, thereby suppressing the leakage magnetic flux. Thus, the upper plate 203b is disposed on the upper end of the magnet member 203a, the module frame 201 is disposed on the lower end of the magnet member 203a, and the side frame 202 is disposed on the side of the magnet member 203a The magnetic flux density can be increased and the vibration characteristics can be improved by suppressing the leakage magnetic flux generated in the magnet member 203a.

The vibration unit 203 can be disposed on the module frame 201 to vibrate the backlight unit 120. [ The vibrating unit 203 may include a magnet member 203a, an upper plate 203b, a bobbin 203c, a coil 203d, and a bobbin ring 203e.

The magnet member 203a may be disposed on the module frame 201. [ For example, the magnet member 203a may be interposed between the upper plate 203b and the module frame 201, and may be surrounded by the side frame 202. The upper plate 203b is disposed at one end of the magnet member 203a and the module frame 201 is disposed at the other end opposite to one end of the magnet member 203a, (201) can control the magnetic flux generated in the magnet member (203a). The magnetic member 203a is interposed between the upper plate 203b and the module frame 201 so that the magnetic flux generated in the magnet member 203a is concentrated into the vibration unit 203 and the leakage magnetic flux can be suppressed .

The upper plate 203b is disposed at the upper end of the magnet member 203a and can be spaced apart from the bobbin ring 203e. The magnet member 203a and the upper plate 203b are inserted into the cylindrical bobbin 203c so that the outer circumferential surfaces of the magnet member 203a and the upper plate 203b are surrounded by the bobbin 203c. . Therefore, the magnet member 203a and the upper plate 203b can guide the linear reciprocating motion of the bobbin 203c. Here, the upper plate 203b may be represented by a center pole, a pole piece, or the like. According to an example, the upper plate 203b may be made of a magnetic material such as iron (Fe) to increase the magnetic flux density formed through the magnet member 203a.

The bobbin 203c may surround the top plate 203b and extend toward the rear structure 300. For example, when a magnetic field is formed in the vibration unit 203 by applying a current for generating an acoustic wave to the coil 203d wound around the outer circumferential surface of the bobbin 203c, The unit 120 can be vibrated. The front surface of the bobbin 203c contacts the bobbin ring 203e so that the bobbin 203c can vibrate the backlight unit 120 through the bobbin ring 203e in accordance with the application and non- have. The display panel 110 receives the vibration of the backlight unit 120 to generate sound waves, and the sound waves can be output to the front of the display panel 110.

The coil 203d may be wound around the outer circumferential surface of the bobbin 203c to surround the magnet member 203a apart from each other. For example, the coil 203d is wound around the outer circumferential surface of the bobbin 203c and surrounds the magnet member 203a so as to be supplied with a current for generating sound. Here, the coil 203d may be represented by a voice coil or the like. When a current for generating an acoustic wave is applied to the coil 203d, the bobbin 203c moves in accordance with the left-hand rule of Fleming based on an applied magnetic field formed around the coil 203d and an external magnetic field formed around the magnet member 203a Can be vibrated while being guided by the damper (205). Therefore, the bobbin 203c can be vibrated while being guided by the damper 205 to transmit the vibration to the backlight unit 120. [

The bobbin ring 203e is interposed between the bobbin 203c and the backlight unit 120 so that the vibration of the bobbin 203c can be transmitted to the backlight unit 120. [ According to one example, the bobbin ring 203e may be a ring-shaped plate-like member attached to the front surface of the bobbin 203c. The bobbin ring 203e can bond the bobbin 203c and the backlight unit 120 to each other. For example, the bobbin ring 203e may be embodied as a double-sided tape, but is not limited thereto. The bobbin ring 203e can prevent the heat generated in the bobbin 203c from being transmitted to the display module 100 through the backlight unit 120 and efficiently transmit the vibration of the bobbin 203c to the backlight unit 120 efficiently .

The outer frame 204 may be disposed on the side frame 202. For example, the outer frame 204 may extend from the upper outer edge of the side frame 202 toward the backlight unit 120. The outer frame 204 may be disposed apart from and spaced apart from the bobbin 203c. The upper portion of the outer frame 204 is connected to the damper 205 to support one end of the damper 205. Thus, while the other end of the damper 205 is connected to the bobbin 203c to guide the vibration of the bobbin 203c, the outer frame 204 is fixed to the upper end of the side frame 202, Can support.

The damper 205 is disposed between the outer frame 204 and the bobbin 203c to guide the vibration of the bobbin 203c. For example, one end of the damper 205 may be connected to the upper end of the outer frame 204, and the other end of the damper 205 may be connected to the bobbin 203c. The damper 205 has a corrugated structure between one end and the other end, and can control and guide vibration of the bobbin 203c while contracting and relaxing in accordance with the linear reciprocating motion of the bobbin 203c. Therefore, the damper 205 is connected between the outer frame 204 and the bobbin 203c, thereby restricting the vibration distance of the bobbin 203c through the restoring force.

The rear structure 300 may include a depression 320 for receiving the vibration generating device 200. Specifically, the front surface of the depression 320 may be recessed from the rear structure 300 to receive the vibration generator 200, and the rear surface of the depression 320 may be recessed from the rear structure 300 Can be protruded. For example, the depression 320 may include a bottom surface 321 and an inner side surface 323. The bottom surface 321 of the depression may support the vibration generator 200 and the inner surface 323 of the depression may surround the vibration generator 200 at a distance.

According to one example, the rear structure 300 does not include a through hole into which the vibration generating device 200 is inserted, but instead includes the depressed portion 320, thereby simplifying the manufacturing process of the display device 10 . For example, when the vibration generating device 200 is inserted into the through hole of the rear structure 300 and fixed to the rear structure 300, a process of forming the through hole of the rear structure 300, A process of forming the device, a process of coupling the vibration generator 200 to the rear structure 300 via the coupling device, and a process of sealing the rear surface of the vibration generator 200 may be sequentially performed. The display device 10 according to the present application includes a step of attaching the vibration generating device 200 to the rear surface of the display module 100 by including the depressed portion 320 of the rear surface structure 300, 100 can be completed through a process of attaching and sealing the rear surface of the rear structure 300 through the depressed portion 320 of the rear structure 300. Accordingly, the rear structure 300 includes the depressed portion 320 that receives the vibration generating device 200, thereby simplifying the manufacturing process of the display device 10 and reducing the manufacturing cost.

The display device 10 may further include a vibration absorbing member 600 interposed between the depression 320 of the rear structure 300 and the vibration generating device 200. For example, the vibration-absorbing member 600 can adhere the rear surface of the module frame 201 to the bottom surface 321 of the depression, and prevents the vibration of the vibration unit 203 from being transmitted to the rear surface structure 300 can do.

According to an example, the vibration-absorbing member 600 may absorb vibration of the vibration-generating device 200 including the low-elasticity material and transmitted to the rear of the display device 10. For example, the vibration-absorbing member 600 may include a material having lower elasticity than the module frame 201 and the depressions 320 of the rear structure 300. At this time, the vibration absorbing member 600 may include a foam pad, and an adhesive layer provided on each of the front and rear surfaces of the foam pad. Thus, the vibration-absorbing member 600 is made less elastic than the module frame 201 and the depressions 320 of the rear structure 300, thereby preventing the sound-pressure leakage to the rear of the display device 10 , The sound pressure level SPL output to the front of the display device 10 can be improved.

10 is a view showing a coupling portion in the display device according to the second embodiment of the present application.

10, the vibration absorbing member 600 may be interposed between the concave portion 320 of the rear structure 300 and the vibration generating device 200. According to one example, the vibration absorbing member 600 may include first and second vibration absorbing members 610 and 620.

The first vibration absorbing member 610 may be interposed between the bottom surface 321 of the depression and the rear surface of the module frame 201. For example, the first vibration absorbing member 610 can adhere the rear surface of the module frame 201 to the bottom surface 321 of the depression, and the longitudinal vibration of the vibration unit 203 can be transmitted to the rear surface structure 300 Can be prevented. Therefore, the first vibration absorbing member 610 can prevent the sound pressure leakage to the rear of the display device 10, and can improve the sound pressure level SPL output to the front of the display device 10.

The second vibration absorbing member 620 may be interposed between the inner side surface 323 of the depression and the side surface of the module frame 201. For example, the second vibration absorbing member 620 can be adhered to the inner side surface 323 of the side depression of the module frame 201, and the left and right vibration of the vibration unit 203 is transmitted to the rear surface structure 300 Can be prevented. Thus, the second vibration absorbing member 620 can prevent the sound pressure leakage to the rear of the display device 10, and can improve the sound pressure level SPL output to the front of the display device 10.

Thus, the vibration-absorbing member 600 prevents the longitudinal vibration and the lateral vibration of the vibration unit 203 from being transmitted to the rear surface structure 300 through each of the first and second vibration-absorbing members 610 and 620, It is possible to prevent the sound pressure leakage to the rear of the apparatus 10. [ The vibration absorbing member 600 can prevent the sound pressure leakage to the rear of the display device 10, thereby improving the sound pressure level SPL output to the front of the display device 10. [

The engaging portion 700 can fix the vibration generating device 200 to the bottom surface 321 of the depressed portion. For example, the engaging portion 700 can sequentially pass through the module frame 201, the first vibration absorbing member 610, and the bottom surface 321 of the depression. Therefore, the coupling portion 700 can improve the coupling force between the vibration generating device 200 and the depressed portion 320, as compared with the case where the vibration generating device 200 is attached to the depressed portion 320 only through the vibration absorbing member 600 So that the vibration generating device 200 can be fixed and supported. For example, the engaging portion 700 can be realized by a screw or a bolt and a nut.

11 is a diagram showing acoustic output characteristics of a display device according to an example of the present application. Specifically, a first structure (Structure 1) shown by a dotted line corresponds to a display device not including an acoustic reflector, and a second structure (Structure 2) shown by a solid line corresponds to a display device 10 ). It is assumed that the first and second structures are the same except for the structure of the acoustic reflector.

Referring to Fig. 11, the display device of the first structure shows a sharp decrease in the sound pressure level (SPL) in the high frequency range of 2 kHz or more. It can be seen that the result is that some of the vibration in the high frequency region is not output to the front of the display module but is radiated to the side of the display module. In the second structure of the display device according to one embodiment of the present application, it can be seen that the reduction of the sound pressure level (SPL) in the high frequency range of 2 kHz or more is reduced as compared with the display device of the first structure. Since the acoustic reflector 400 is disposed on the side of the display module 100, the acoustic reflector 400 reflects the sound emitted from the side of the display module 100 toward the front of the display module 100, This is because the It can be seen that the acoustic reflector 400 can concentrate sound at any point in front of the display module 100. [

Accordingly, it can be seen that the flatness of the sound pressure level (SPL) in the entire frequency range is significantly improved in the display device of the second structure according to an example of the present application than in the display device of the first structure. Therefore, the display device according to one embodiment of the present invention can improve the sound pressure transmission characteristic generated in the vibration generating device through the acoustic reflection part, thereby preventing a decrease in the sound pressure level (SPL) in the high frequency range and suppressing the sound pressure level SPL) can be improved and the clarity of the sound can be improved.

A display panel used in a display device according to an exemplary embodiment of the present invention includes a liquid crystal display panel, an organic light emitting (OLED) display panel, a quantum dot display panel, and an electroluminescent display panel electroluminescent display panel, and the like are not limited to a specific display panel capable of generating sound by being vibrated by the vibration generating device of the present application. The display device of the embodiment of the present application can be applied to a display panel including an organic light emitting layer, a quantum dot light emitting layer, and a micro light emitting diode.

The vibration generator according to the embodiment of the present application can be applied to a display device. A display device according to an exemplary embodiment of the present invention may be applied to a mobile device, a video phone, a smart watch, a watch phone, a wearable device, a foldable device, a rollable device, device, a bendable device, a flexible device, a curved device, an electronic organizer, an electronic book, a portable multimedia player (PMP), a personal digital assistant (PDA) Medical devices, desktop PCs, laptop PCs, netbook computers, portable computers, workstations, navigation, vehicle navigation, vehicle displays, televisions, wallpapers wall paper, a notebook, a monitor, a camera, a camcorder, and a home appliance.

A display device according to an embodiment of the present application can be described as follows.

The display device according to the present application includes a display module for displaying an image, a rear structure supporting the display module, a vibration generator for vibrating the display module, and an acoustic reflector disposed on a side of the display module.

According to some embodiments of the present application, the acoustic reflector may reflect the sound emitted from the side of the display module to the front of the display module.

According to some embodiments of the present application, the acoustic reflector may protrude from the side of the back surface structure.

According to some embodiments of the present application, the acoustic reflector may be flexed forward of the display module.

According to some embodiments of the present application, the inner surface of the acoustic reflector may be non-parallel to the side of the display module.

According to some embodiments of the present application, the inner surface of the acoustic reflector may be formed to be 110 to 160 degrees inclined from the edge of the back surface structure.

According to some embodiments of the present application, the angle formed by the inner surface of the acoustic reflector and the edge of the back surface structure can determine the direction of sound propagation.

According to some embodiments of the present application, the acoustic reflector may reflect the sound and focus it on at least one point in front of the display module.

According to some embodiments of the present application, the acoustic reflector may be further away from the side of the display module from the bottom to the top.

According to some embodiments of the present application, the acoustic reflector may be made of a glass material, a metal material, or a plastic material.

According to some embodiments of the present application, the back surface structure may include a depression for receiving the vibration generating device.

According to some embodiments of the present application, the display device may further include a vibration absorbing member interposed between the depression of the back surface structure and the vibration generating device.

According to some embodiments of the present application, the vibration absorbing member can adhere the back surface of the vibration generating device to the bottom surface of the depression.

According to some embodiments of the present application, the bottom surface of the depression supports the vibration generator, and the inner surface of the depression may surround the vibration generator at a distance.

According to some embodiments of the present application, the vibration generating device includes a module frame fixed to the bottom surface of the rear structure, and a vibration unit disposed on the module frame to transmit vibration to the display module, A first vibration absorbing member interposed between the bottom surface and the rear surface of the module frame, and a second vibration absorbing member interposed between the inner surface of the depression and the side surface of the module frame.

According to some embodiments of the present application, the display device may further include a coupling portion for fixing the vibration generating device to the bottom surface of the depression.

According to some embodiments of the present application, the coupling portion may pass through the module frame, the vibration absorbing member, and the depression.

According to some embodiments of the present application, the display module may include a display panel, and a backlight unit disposed on a rear surface of the display panel.

According to some embodiments of the present application, the display module may further include a module adhesive member interposed between the edge of the display panel and the edge of the backlight unit.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be clear to those who have knowledge of. Therefore, the scope of the present application is to be defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present application.

10: Display device
100: display module 110: display panel
120: backlight unit 130: module bonding member
200: Vibration generator 300: Rear structure
400: Acoustic reflector 500: Adhesive member
600: Vibration absorbing member 700:

Claims (19)

A display module for displaying an image;
A rear structure supporting the display module;
A vibration generating device for vibrating the display module; And
And an acoustic reflector disposed on a side surface of the display module. The method according to claim 1,
Wherein the acoustic reflector reflects the sound emitted from the side of the display module toward the front of the display module. The method according to claim 1,
Wherein the acoustic reflector protrudes from a side surface of the rear structure. The method of claim 3,
Wherein the acoustic reflector is curved forward of the display module. The method of claim 3,
Wherein an inner surface of the acoustic reflector is not parallel to a side surface of the display module. 6. The method of claim 5,
Wherein an inner surface of the acoustic reflective portion is formed to be inclined at an angle of 110 to 160 degrees from an edge of the rear structure. 6. The method of claim 5,
Wherein the angle formed by the inner surface of the acoustic reflective portion and the edge of the rear surface structure determines a traveling direction of the sound. 8. The method of claim 7,
Wherein the acoustic reflector reflects the sound to at least one point in front of the display module. The method of claim 3,
Wherein the acoustic reflector is spaced further from the side of the display module as it goes from the bottom to the top. The method of claim 3,
Wherein the acoustic reflector is made of a glass material, a metal material, or a plastic material. The method according to claim 1,
Wherein the rear structure includes a depression for receiving the vibration generating device. 12. The method of claim 11,
Further comprising a vibration absorbing member interposed between a depression of the rear structure and the vibration generating device. 13. The method of claim 12,
Wherein the vibration absorbing member adheres the rear surface of the vibration generating device to the bottom surface of the depression. 13. The method of claim 12,
Wherein the bottom surface of the depression supports the vibration generator, and the inner surface of the depression surrounds the vibration generator. 13. The method of claim 12,
The vibration-
A module frame fixed to a bottom surface of the rear structure; And
And a vibration unit disposed on the module frame for transmitting vibration to the display module,
The vibration-
A first vibration absorbing member interposed between a bottom surface of the depression and a rear surface of the module frame; And
And a second vibration-absorbing member interposed between an inner surface of the depression and a side surface of the module frame. 13. The method of claim 12,
Further comprising a coupling portion for fixing the vibration generating device to a bottom surface of the depression. 17. The method of claim 16,
And the engaging portion penetrates the module frame, the vibration absorbing member, and the depression. 18. The method according to any one of claims 1 to 17,
The display module includes:
A display panel; And
And a backlight unit disposed on a rear surface of the display panel. 19. The method of claim 18,
The display module includes:
And a module bonding member interposed between an edge of the display panel and an edge of the backlight unit.

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