Display device

Abstract

The embodiment of the invention provides a display device, and relates to the technical field of display. The display device provided by the embodiment of the invention comprises a display panel, a backlight assembly, a back plate and an exciter, wherein the display panel is configured to display image information; the backlight assembly is located on the light incident side of the display panel and comprises a plurality of lamp panels, and the lamp panels are arranged on the same plane. The back plate is arranged on the side, away from the display panel, of the backlight assembly, and the multiple lamp panels are connected with the back plate. The exciter is arranged on the side, away from the lamp panel, of the back panel and penetrates through the back panel to be connected with the lamp panel. Wherein the plurality of exciters are respectively and correspondingly connected with the plurality of lamp panels, and the plurality of exciters are configured to selectively drive the lamp panels to vibrate according to the image information so as to enable the display panel to locally vibrate and produce sound, so that the sound and picture synchronization is realized, the vibration quality and the vibration area are reduced, the energy attenuation is weakened, and the display effect is improved. And the medium-high frequency sound production performance is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device. Background Art

[0002] Speakers in display devices usually use downward and rear sound output methods, which separates the sound and image positions from the image positions, resulting in a poor viewing experience and failing to provide an audio-visual experience that integrates sound and image.

[0003] In related technologies, a display device can generate sound waves by directly vibrating a display panel through a sound-generating exciter, so that the display panel in the display device has both the display function and the sound-generating function of a speaker diaphragm to achieve an audio-visual effect of integrated sound and picture.

[0004] However, the current sound exciter drives the entire display panel to vibrate and produce sound simultaneously, resulting in large vibration mass and area, rapid energy decay, and poor mid- and high-frequency sound performance. Summary of the Invention

[0005] Some embodiments of the present application provide a display device that can solve the technical problems of large vibration mass and area, fast energy decay, and poor mid- and high-frequency sound performance of current display devices when vibrating and making sounds.

[0006] In some embodiments, a display device is provided, comprising a display panel, a backlight assembly, a backplane, and an exciter. The display panel is configured to display image information. The backlight assembly is located on the light-entering side of the display panel and includes multiple light panels arranged in the same plane, with a cavity formed between the light panels and the display panel. The backplane is located on a side of the backlight assembly facing away from the display panel, with the multiple light panels respectively connected to the backplane. The exciter is located on a side of the backplane facing away from the light panel, and the exciter passes through the backplane and is connected to the light panel. There are multiple exciters, each of which is connected to a corresponding light panel. The multiple exciters are configured to selectively drive the light panels to vibrate based on the image information, thereby causing the display panel to vibrate locally and produce sound.

[0007] Some embodiments of the present application provide display devices that divide the backlight assembly into multiple light panels, each of which is independently connected to the back panel. Different light panels can be driven by different exciters to independently vibrate and produce sound, achieving localized vibration sound generation on the display panel. This reduces the mass and area of vibration while achieving audio-visual synchronization, weakening energy attenuation and improving mid- and high-frequency sound generation performance. Furthermore, localized vibration sound generation improves the accuracy and sensitivity of the sound generation location, allowing the sound generation location of the display device to change as the image changes, achieving the effect of sound tracking the image.

[0008] In some embodiments, the plurality of light boards are sequentially arranged along the length direction of the display panel, and the plurality of light boards form a plurality of sound emission areas; the plurality of sound emission areas are symmetrically arranged relative to the central axis of the display device.

[0009] With this arrangement, multiple light panels vibrate and emit sound independently, making multiple sound-emitting areas relatively independent, thus achieving the effect of sound tracking images more accurately.

[0010] In some embodiments, the plurality of light boards may include a first light board and a second light board, wherein at least one exciter is connected to the first light board, and no exciter is provided on the second light board; each sound emission zone corresponds to at least one first light board;

[0011] Wherein, different sound emitting areas are arranged adjacent to each other; or, at least one second light board is arranged between different sound emitting areas.

[0012] With this arrangement, different sound-emitting areas can form different sound channels, so that each sound channel of the display device can generate sound through panel vibration.

[0013] In some embodiments, the multiple sound emission areas may include a left main sound channel area and a right main sound channel area; the left main sound channel area and the right main sound channel area are symmetrically arranged relative to the central axis of the display device, and the left main sound channel area and the right main sound channel area correspond to at least two first light boards respectively; a second light board is arranged between the left main sound channel area and the right main sound channel area.

[0014] In some embodiments, the multiple sound emission areas may include a left main channel area, a right main channel area and a center channel area, and the left main channel area, the center channel area and the right main channel area are arranged adjacent to each other in sequence along the length direction of the display panel; the left main channel area, the center channel area and the right main channel area correspond to at least two first light boards respectively; a second light board is provided on the side of the left main channel area away from the center channel area; a second light board is provided on the side of the right main channel area away from the center channel area.

[0015] In some embodiments, the multiple sound emission areas may include a left main channel area, a right main channel area, a center channel area, a left surround channel area, and a right surround channel area, wherein the left surround channel area, the left main channel area, the center channel area, the right main channel area, and the right surround channel area are arranged adjacent to each other in sequence along the length direction of the display panel; the second light panel is arranged below the sound emission area.

[0016] In some embodiments, the display device may further include a first adhesive member. There is a gap between the back panel and the light panel. The first adhesive member is disposed in the gap, and two sides of the first adhesive member are respectively bonded to the back panel and the light panel.

[0017] This arrangement can improve the installation stability of the light panel.

[0018] In some embodiments, the first adhesive member is located between two adjacent light panels; the first adhesive member extends along a seam between the two adjacent light panels.

[0019] Such an arrangement can ensure good sealing between adjacent lamp panels.

[0020] In some embodiments, the display device may further include a second adhesive member, a first side of which may be bonded to the light panel; the back panel is provided with an opening, and the exciter passes through the opening and is bonded to the second side of the second adhesive member.

[0021] Such an arrangement can ensure that the back panel is arranged as close to the light panel as possible, thereby reducing the overall thickness of the display device.

[0022] In some embodiments, the display device may further include an optical film assembly, which is arranged between the light board and the display panel; there is a sealed gas layer between the light board and the optical film assembly, and when the exciter drives the light board to vibrate, the light board drives the display panel to vibrate and make sound through the gas layer.

[0023] Such an arrangement can improve the vibration transmission efficiency from the light board to the display panel.

[0024] Some embodiments of the present application provide a display device, including a display panel, a backlight assembly, a backplane, and an exciter. The display panel is configured to display image information. The backlight assembly is located on the light-entering side of the display panel, and the backlight assembly includes a plurality of light boards, which are arranged in the same plane. The backplane is located on the side of the backlight assembly away from the display panel, and the plurality of light boards are respectively connected to the backplane. The exciter is located on the side of the backplane away from the light board, and the exciter passes through the backplane and is connected to the light board. There are multiple exciters, and the multiple exciters are correspondingly connected to the multiple light boards. The multiple exciters are configured to selectively drive the light boards to vibrate according to the image information, so that the display panel vibrates locally and makes sound. This reduces the vibration mass and area, weakens energy attenuation, improves the mid- and high-frequency sound performance, and improves the accuracy and sensitivity of the sound position while achieving audio-visual synchronization. The sound position of the display device can change with the change of the image, achieving the effect of sound tracking the image.

[0025] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the display devices provided by some embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 This is a schematic structural diagram of a display device according to some embodiments of the present application;

[0028] Figure 2 A cross-sectional view of a display device according to some embodiments of the present application;

[0029] Figure 3 Partial cross-sectional view of the display device of some embodiments of the present application Figure 1 ;

[0030] Figure 4 A schematic diagram of the distribution of a first type of sound emission area of a display device according to some embodiments of the present application;

[0031] Figure 5 A schematic diagram of the distribution of the second sound emission area of the display device according to some embodiments of the present application;

[0032] Figure 6 Schematic diagram of the distribution of the third sound emission area of the display device in some embodiments of the present application;

[0033] Figure 7 A schematic diagram showing the distribution of a fourth type of sound emission area of a display device according to some embodiments of the present application;

[0034] Figure 8 A schematic diagram of the distribution of actuators of a display device according to some embodiments of the present application;

[0035] Figure 9 Partial cross-sectional view of the display device of some embodiments of the present application Figure 2 ;

[0036] Figure 10 A schematic cross-sectional view of an actuator of a display device according to some embodiments of the present application;

[0037] Figure 11 A schematic cross-sectional view of a spring wave of a display device according to some embodiments of the present application;

[0038] Figure 12 A schematic diagram of the structure of a spring wave of a display device according to some embodiments of the present application;

[0039] Figure 13 A schematic diagram of the structure of a spring wave of a display device according to some embodiments of the present application;

[0040] Figure 14 A schematic cross-sectional view of a spring wave of a display device according to some embodiments of the present application;

[0041] Figure 15 A schematic cross-sectional view of a spring wave of a display device according to some embodiments of the present application;

[0042] Figure 16A schematic diagram of the structure of a spring wave of a display device according to some embodiments of the present application;

[0043] Figure 17 Schematic diagram of the structure of the elastic wave of the display device in some embodiments of the present application.

[0044] Description of reference numerals:

[0045] 100-display panel; 110-optical film assembly;

[0046] 200 - backlight assembly; 201 - left main channel area; 202 - right main channel area; 203 - center channel area; 204 - left surround channel area; 205 - right surround channel area; 206 - bass area; 210 - light board; 210a - first light board; 210b - second light board;

[0047] 300-support member;

[0048] 400 - actuator; 410 - actuator; 411 - connection structure; 420 - damper; 4201 - main body; 4202 - first connection part; 4203 - second connection part; 421 - fiber layer; 422 - heat-conducting layer; 423 - heat-conducting film; 4231 - heat dissipation hole; 430 - housing; 440 - pressure ring; 450 - magnetic component; 451 - magnetic conductive member; 452 - magnetic member; 460 - elastic pad;

[0049] 500-back panel; 503-opening;

[0050] 600-first adhesive member;

[0051] 700-second adhesive member;

[0052] M-gas layer. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0054] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art may adjust them as needed to suit specific applications.

[0055] Secondly, it should be noted that in the description of this application, terms such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.

[0056] The terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance or implicitly specify the number of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0057] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0058] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0059] Display devices such as flat-panel displays and televisions can be used to display images. For example, a liquid crystal display (LCD) device primarily consists of a backlight assembly, a liquid crystal panel, and a driver circuit. The LCD panel, as a display panel, does not emit light on its own and relies on the light source provided by the optical components in the backlight assembly to achieve brightness. The imaging principle of an LCD is to place liquid crystal between two pieces of conductive glass. The electric field between two electrodes drives the liquid crystal molecules into a twisted nematic state, controlling the backlight's transmission or shielding function, thereby displaying the image. Adding a color filter allows for color image display.

[0060] In a display device, the backlight module can be a direct-lit backlight module. In this case, the backlight module includes a lamp panel, which provides backlight for the display panel through its light source. When the lamp panel vibrates, it compresses the gas within the cavity on the light-emitting side of the lamp panel, transmitting the vibrations to the display panel through the cavity, driving the display panel to vibrate. The display panel then generates sound waves through the vibrations, allowing the display panel to both display images and replace the speaker in producing sound.

[0061] The size of the gap in the cavity on the light-emitting side of the light panel can be determined based on the light source of the light panel, for example, the size of the gap is related to the size of the light source. Sub-millimeter light-emitting diodes (such as Mini-LEDs) and other light sources have relatively compact dimensions, which correspondingly results in a smaller gap in the cavity between the backlight panel and the liquid crystal display panel, thereby reducing the thickness of the cavity and improving the vibration transmission effect of the cavity. Therefore, in the embodiments of the present application, the light source of the backlight module is described as a sub-millimeter light-emitting diode (Mini-LED).

[0062] For example, the cavity gap can be 0.3mm to 10mm, with the maximum gap being 10mm. Alternatively, the cavity gap can be 0.3mm or 1mm. For example, when the cavity gap is 1mm, the cavity thickness is relatively small, which can improve the transmission efficiency of the vibration force output by the exciter. Alternatively, when the cavity gap is 0.3mm, the exciter is closer to the display panel, resulting in stronger vibration and better sound effects. When the cavity gap is 10mm, the cavity thickness is relatively large, which can prevent collision between the display panel and the light source at a certain position during vibration. Specifically, the gap of the cavity can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, etc. It should be noted that the numerical values and numerical ranges involved in the embodiments of the present application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors, which can be considered negligible by those skilled in the art.

[0063] In the related art, compared with display devices that use OLED light sources as light sources, because OLED displays are self-luminous screens and the OLED displays themselves have a certain degree of flexibility, an exciter is set on the back of the OLED display, and the OLED display can be elastically deformed and make sounds under the excitation vibration of the exciter. In liquid crystal display devices, however, the liquid crystal display device has a backlight module, and the exciter cannot be directly set on the back of the display panel. In addition, the lamp board in the backlight module is relatively hard, making it difficult to couple and transmit its own vibration to the display panel, and the transmission efficiency of the vibration force is low. Therefore, a support member can be set between the display panel and the lamp board of a Mini-LED display device or other liquid crystal display device, and the vibration of the lamp board can be transmitted to the display panel using it as a vibration transmission medium, thereby improving the transmission efficiency of vibration from the lamp board to the display panel. In addition, the support member can maintain the gap between the cavity between the lamp board and the display panel within a preset range, avoiding the risk of collision noise and abrasion caused by the light source and the display panel touching each other at a certain position.

[0064] In addition, compared with the light board in OLED display devices, the light board of Mini-LED display devices is harder. The exciter installed on the back panel drives the entire Mini-LED light board to vibrate together, so the vibration mass and vibration area are large, the vibration energy decays quickly, and the mid- and high-frequency sound effects are poor.

[0065] Some embodiments of the present application provide a display device that divides the backlight assembly into multiple independent light panels. Different exciters drive different light panels to produce local sound. Different light panels will not affect each other when vibrating to produce sound, thereby improving the reliability of vibration sound. While achieving synchronization between sound and picture, the device reduces vibration energy attenuation, improves mid- and high-frequency sound effects, and avoids damage to the light panels or wear of the optical diaphragm. In addition, light panels in different areas can be individually controlled by the exciters to produce local vibration sound according to the picture, thereby achieving the effect of sound tracking the image.

[0066] <Composition of Display Device>

[0067] Figure 1 This is a schematic structural diagram of a display device according to some embodiments of the present application. Figure 2 is a cross-sectional view of a display device according to some embodiments of the present application. Figure 3 Partial cross-sectional view of the display device of some embodiments of the present application Figure 1 .

[0068] like Figures 1 to 3 As shown, the display device provided in some embodiments of the present application includes a display panel 100 .

[0069] In some embodiments, the display device includes a backlight assembly 200 . The backlight assembly 200 is located on the light incident side of the display panel 100 and can provide the display panel 100 with light required for display.

[0070] In some embodiments, the display device includes a back plate 500 .

[0071] In some embodiments, the display device includes an exciter 400, which is configured to drive the light board 210 to vibrate and make sound. The exciter 400 can drive the light board 210 to generate multiple sound zones. Different sound zones can correspond to different channels, so that the display device can have a multi-channel sound effect.

[0072] In some embodiments, the backlight assembly 200 may include a light board 210 configured to emit light.

[0073] In some embodiments, the backlight assembly 200 may include an optical film assembly 110 , and the light board 210 may play a supporting role for the optical film assembly 110 .

[0074] In some embodiments, the back plate 500 is disposed on the side of the backlight assembly 200 facing away from the display panel 100 and can support the light board 210. The actuator 400 can be mounted on the back plate or directly on the light board 210.

[0075] In some embodiments, the backlight assembly 200 includes a plurality of lamp panels 210, which are arranged in the same plane, and a cavity is formed between the lamp panels 210 and the display panel 100. The plurality of lamp panels 210 are respectively connected to the back panel 500 so that the plurality of lamp panels 210 are relatively independent. The exciter 400 is disposed on the side of the back panel 500 facing away from the lamp panels 210, and the exciter 400 passes through the back panel 500 and is connected to the lamp panels 210. The exciter 400 drives the lamp panels 210 to vibrate, and the lamp panels 210 can transmit the vibration to the optical film assembly 110 and the display panel 100, causing the display panel 100 to vibrate and produce sound, thereby achieving a synchronized audio and video effect.

[0076] There are multiple actuators 400, and the multiple actuators 400 are correspondingly connected to the multiple light boards 210. The multiple actuators 400 are configured to selectively drive the light boards 210 to vibrate according to image information.

[0077] When part of the light panel 210 vibrates and makes sound and transmits the vibration to the display panel 100, the display panel 100 can vibrate locally and make sound, thereby improving the accuracy and sensitivity of the sound position. The sound position of the display device can change with the change of the image, achieving the effect of sound tracking the image.

[0078] Furthermore, the multiple lamp boards 210 are independent of one another. When one lamp board 210 equipped with an actuator 400 vibrates, it does not affect the other lamp boards 210, meaning that the other lamp boards 210 do not vibrate. Therefore, by driving only some lamp boards 210 to vibrate according to the displayed image, the actuator 400 can reduce the vibration mass and area, minimize energy attenuation, and improve the reliability of the lamp boards 210 and the optical structure. This prevents damage to the lamp boards 210 or wear on the optical film, thereby improving the image quality of the display device.

[0079] In some embodiments, considering factors such as the size of the display device and the manufacturing process of the light board 210, the size of the display device can match the sum of the areas of multiple light boards 210, that is, the number of light boards 210 can be multiple, and multiple light boards 210 are arranged in an array in sequence.

[0080] It should be noted that in the display device provided in the embodiment of the present application, the light panels 210 may be Mini-LED panels, and the light from each light panel 210 may be independently controlled, enabling the display panel 100 to display images with higher positioning accuracy. Furthermore, the display device may also be a laser TV. The embodiment of the present application does not limit the specific image display principle of the display device; it only requires that the exciter 400 vibrates the light panels 210 to cause the display panel 100 to vibrate and produce sound.

[0081] The following describes each part of the display device in sequence.

[0082] [Display Panel]

[0083] Please continue to refer to Figures 1 to 3 The display panel 100 is configured to display an image. The display panel 100 includes a display area and a circuit board located on one side of the display area. The circuit board is used to drive and display the entire display panel 100.

[0084] The display panel 100 includes a sky side, a left side, a right side and a ground side, wherein the sky side and the ground side are opposite to each other, the left side and the right side are opposite to each other, the sky side is connected to one end of the left side and one end of the right side respectively, and the ground side is connected to the other end of the left side and the other end of the right side respectively.

[0085] Exemplarily, the display panel 100 may be a liquid crystal display panel, which specifically includes a color filter (CF) substrate, a thin film transistor (TFT) substrate (also known as an array substrate), and a liquid crystal (LC) layer, with the LC layer being located between the CF substrate and the array substrate. The TFT substrate is provided with data lines and scan lines. The powering of the data and scan lines controls the orientation of the liquid crystal molecules, thereby directing light from a light source through the CF substrate and generating a preset color image.

[0086] [Optical film components]

[0087] Please continue to refer to Figures 1 to 3 The optical film assembly 110 may include a reflective sheet that can reflect the light generated by the light source in the light-emitting direction, thereby evenly distributing the light emitted by the light source. For example, the reflective sheet can be made of polyethylene glycol terephthalate (PET).

[0088] In some embodiments, the optical film assembly 110 may include a light guide plate. The light guide plate can utilize refraction and total reflection to emit light from its light-entering side outward from its light-emitting side, thereby converting a linear light source into a surface light source. Exemplary materials for the light guide plate include glass, polymethyl methacrylate (PMMA), polycarbonate (PC), and the like.

[0089] In some embodiments, the optical film assembly 110 may include components such as an optical film, and the optical film assembly 110 is located on the light incident side of the display panel 100. The optical film is located on the light exiting side of the light guide plate and is used to brighten the light. The optical film may include one or more films, and may include at least one of a prismatic film and a brightness enhancement film.

[0090] In some embodiments, the display panel 100 and the optical film assembly 110 can be pressed together to avoid an air gap between the LCD screen and the optical film assembly 110 that allows air to circulate with the outside air. For example, the LCD screen and the optical film assembly 110 can be bonded together, for example, using photosensitive adhesive (UV adhesive), foam, double-sided tape, etc. Thus, after the vibration of the light board 210 is transmitted to the optical film assembly 110, the vibration can be directly transmitted to the display panel 100 through the optical film assembly 110, causing the display panel 100 to vibrate and produce sound.

[0091] In other embodiments, there may be a gap between the display panel 100 and the optical film assembly 110, and the gap is a closed space. After the light board 210 vibrates the optical film assembly, the vibration of the optical film assembly 110 will utilize the viscosity of the air in the gap between the display panel 100 and the optical film assembly 110 to transmit the vibration to the display panel 100, causing the display panel 100 to vibrate and make sound.

[0092] [Light Board]

[0093] Please continue to refer to Figures 1 to 3In some embodiments of the present application, there are multiple light panels 210, which are assembled and independent of each other to form a complete light panel. The shape of the light panel 210 can be square, and the specific length and width of each light panel 210 are not limited in the embodiments of the present application.

[0094] Among them, each light board 210 can be provided with multiple light sources, and the multiple light sources can be arranged in an array on the light board 210. For example, the light source can be a strip light bar set on the light board 210, and the light bar has multiple light-emitting diodes (LEDs) arranged in sequence. The light-emitting diodes can be Mini-LEDs. In addition, there can be multiple light bars, and the multiple light bars can be arranged in sequence at intervals.

[0095] In some embodiments, multiple light panels 210 are arranged in sequence along the length of the display panel 100, forming multiple sound-emitting zones. These zones are symmetrically arranged about the central axis of the display device. The multiple light panels 210 independently vibrate and generate sound, allowing the zones to be relatively independent, more accurately achieving the sound-tracking effect.

[0096] It is understandable that the exciter 400 can be set on each light board 210, or the exciter 400 can be set on some of the light boards 210. The specific setting can be based on the number of sound emission zones to be formed. The more sound emission zones the display device has, the more light boards 210 on which the exciter 400 can be set.

[0097] Figure 4 Schematic diagram of the distribution of the first sound emission area of the display device in some embodiments of the present application.

[0098] Please refer to Figures 2 to 4 In some embodiments, the plurality of light boards 210 may include a first light board 210a and a second light board 210b. The first light board 210a is connected to at least one actuator 400, while the second light board 210b is not provided with an actuator 400. Each sound emission zone corresponds to at least one first light board 210a. Different sound emission zones are arranged adjacent to each other; alternatively, at least one second light board 210b is provided between different sound emission zones.

[0099] It can be understood that the exciter 400 directly drives the first lamp board 210a to vibrate, and since the first lamp board 210a and the second lamp board 210b are independent of each other, the vibration of the first lamp board 210a will not affect the second lamp board 210b. The area of the vibration area formed by each first lamp board 210a is small, which can improve the vibration sensitivity and high-frequency ductility, and improve the transmission performance of the display panel 100.

[0100] In addition, since the exciter 400 directly drives the light board 210 to vibrate without providing a sound-generating plate structure, the thickness of the entire display device can be reduced, and the production cost of the product can be reduced.

[0101] For example, the plurality of light panels 210 can be divided into two rows arranged in an upper and lower arrangement. The lower row comprises a plurality of second light panels 210b, and the corresponding display panel 100 can produce bass sounds. The upper row comprises a plurality of first light panels 210a or a combination of first and second light panels 210a, 210b, for forming sound zones for each channel. The second light panels 210b in the lower row can form a bass zone 206 for producing low-frequency sounds.

[0102] Specific examples of different numbers of vocalization zones are described in detail below.

[0103] Please continue to refer to Figure 4 In a first possible implementation, the multiple sound zones may include a left main channel zone 201 and a right main channel zone 202. The left main channel zone 201 and the right main channel zone 202 are symmetrically arranged with respect to the central axis of the display device. Each of the left main channel zone 201 and the right main channel zone 202 corresponds to at least two first light panels 210a. A second light panel 210b is disposed between the left main channel zone 201 and the right main channel zone 202.

[0104] It is understood that two first light panels 210a can be provided in the left main channel area 201, and two first light panels 210a can be provided in the right main channel area 202. Each first light panel 210a is provided with an actuator 400, and each actuator 400 independently drives each first light panel 210a to vibrate. This prevents the vibrations of the left main channel area 201 and the right main channel area 202 from affecting each other.

[0105] Figure 5 Schematic diagram of the distribution of the second sound emission area of the display device in some embodiments of the present application.

[0106] Please refer to Figure 5 In a second possible implementation, the multiple sound emission zones may include a left main channel zone 201, a right main channel zone 202, and a center channel zone 203. The left main channel zone 201, the center channel zone 203, and the right main channel zone 202 are arranged adjacent to each other along the length of the display panel 100. Each of the left main channel zone 201, the center channel zone 203, and the right main channel zone 202 corresponds to at least two first light panels 210a. A second light panel 210b is provided on the side of the left main channel zone 201 facing away from the center channel zone 203. A second light panel 210b is provided on the side of the right main channel zone 202 facing away from the center channel zone 203.

[0107] It's understood that two first light panels 210a can be provided for the left main channel area 201, two first light panels 210a can be provided for the right main channel area 202, and two first light panels 210a can be provided for the center channel area 203. Each first light panel 210a is equipped with an actuator 400, which independently drives the vibration of each first light panel 210a. This prevents the vibrations of the left main channel area 201, right main channel area 202, and center channel area 203 from interfering with each other.

[0108] Figure 6 Schematic diagram of the distribution of the third sound emission area of the display device in some embodiments of the present application.

[0109] Please refer to Figure 6 In a third possible implementation, the multiple sound emission zones may include a left main channel zone 201, a right main channel zone 202, a center channel zone 203, a left surround channel zone 204, and a right surround channel zone 205. The left surround channel zone 204, the left main channel zone 201, the center channel zone 203, the right main channel zone 202, and the right surround channel zone 205 are arranged adjacent to each other in sequence along the length of the display panel 100. The second light panel is disposed below the sound emission zone.

[0110] It is understood that the difference from the previous implementation method lies in the addition of a left surround channel area 204 and a right surround channel area 205. The left surround channel area 204 can be provided with a corresponding first light panel 210a, and the right surround channel area 205 can be provided with a corresponding first light panel 210a. Each first light panel 210a is provided with an exciter 400, and each exciter 400 independently drives each first light panel 210a to vibrate. This prevents the vibrations of the left main channel area 201, the right main channel area 202, the center channel area 203, the left surround channel area 204, and the right surround channel area 205 from interfering with each other. The left and right channels and the surround channels can all emit sound toward the front of the display panel 100 of the display device, providing a better sound effect.

[0111] Figure 7 Schematic diagram of the distribution of the fourth sound emission area of the display device in some embodiments of the present application.

[0112] Please refer to Figure 7 In a fourth possible implementation, the multiple sound zones may include a left main channel zone 201, a right main channel zone 202, a left surround channel zone 204, and a right surround channel zone 205. This fourth implementation differs from the third implementation in that the center channel zone 203 is not provided. The specific layout of the light panel 210 for this implementation will not be further described in this embodiment of the present application.

[0113] Figure 8Schematic diagram of the distribution of actuators of a display device according to some embodiments of the present application.

[0114] It should be noted that, in the embodiment of the present application, more number of sound emission zones can be provided, and other arrangements of sound emission zones can be adopted, as long as the first lamp panels 210a corresponding to the respective sound emission zones are independent of each other and are directly driven to vibrate by different exciters 400. Each lamp panel 210 can be provided with one, two or more exciters 400, and the exciters 400 can be arranged at intervals in the horizontal direction, or, please refer to Figure 8 The exciters 400 may be arranged at intervals along the vertical direction, and this embodiment of the present application does not specifically limit this.

[0115] [Back panel]

[0116] Please continue to refer to Figures 2 to 4 In some embodiments of the present application, the back plate 500 may be square in shape, and the back plate 500 supports the light board 210 on the side of the light board 210 facing away from the display panel 100. The actuator 400 and the back plate 500 may be disposed on the same side of the light board 210, with a smaller gap between the back plate 500 and the light board 210. The actuator 400 may be disposed on the side of the back plate 500 facing away from the light board 210, and may pass through the back plate 500 to connect to the light board 210.

[0117] Among them, the board surface opposite to the back panel 500 and the light board 210 can be a planar structure. Since the exciter 400 directly passes through the back panel 500 and is connected to the light board 210, there is no need to reserve a gap between the back panel 500 and the light board 210 to set up a sounding board, so the thickness of the entire machine can be reduced.

[0118] In some embodiments, the display device may further include a first adhesive member 600, and there is a gap between the back panel 500 and the light board 210. The first adhesive member 600 is arranged in the gap, and the two sides of the first adhesive member 600 are respectively bonded to the back panel 500 and the light board 210, thereby improving the installation stability of the light board 210.

[0119] It can be understood that the first adhesive 600 can be a double-sided adhesive strip with a certain thickness. Each light panel 210 is bonded to the back panel 500 through the first adhesive 600. Since the back panel 500 is a complete whole, each light panel 210 is fixed to the back panel 500 through the first adhesive 600. It can ensure that the multiple light panels 210 have precise installation positions relative to each other and avoid local light panels 210 from interfering with other light panels 210 during vibration.

[0120] In some embodiments, the first adhesive member 600 is located between two adjacent lamp boards 210 ; the first adhesive member 600 extends along the seam between the two adjacent lamp boards 210 , thereby ensuring good sealing between the adjacent lamp boards 210 .

[0121] It can be understood that the optical film assembly 110 is arranged between the lamp board 210 and the display panel 100; there is a closed gas layer M between the lamp board 210 and the optical film assembly 110. When the exciter 400 drives the lamp board 210 to vibrate, the lamp board 210 drives the display panel 100 to vibrate and make sound through the gas layer M, which can improve the vibration transmission efficiency from the lamp board 210 to the display panel 100.

[0122] The first adhesive 600 is bonded between two adjacent lamp panels 210 to ensure a good seal in the gas layer M between the lamp panels 210 and the optical film assembly 110. Vibrations are transmitted to the optical film assembly 110 and the front display panel 100 through the air in the gas layer M, thereby achieving the integration of sound and image.

[0123] In some embodiments, the display device may further include a second adhesive member 700, the first side of which may be bonded to the light board 210; the back panel 500 is provided with an opening 503, and the exciter 400 passes through the opening 503 and is bonded to the second side of the second adhesive member 700, thereby ensuring that the back panel 500 is arranged as close to the light board 210 as possible, thereby reducing the overall thickness of the display device.

[0124] Illustratively, the second adhesive member 700 may be a double-sided tape.

[0125] In the embodiment of the present application, the light board 210 can also be connected to the back panel 500 by other means, including but not limited to snaps, threaded fasteners, support plates, elastic blocks, etc.

[0126] For example, the light board 210 and the back board 500 may be respectively provided with buckles that are buckled with each other. When the light board 210 and the back board 500 are assembled, the buckles on the two are buckled with each other.

[0127] Illustratively, mounting holes are respectively provided on the light board 210 and the back board 500 , and threaded fasteners can be used from one side of the back board to pass through the mounting holes on the light board 210 and the back board 500 to connect the two.

[0128] Exemplarily, the light board 210 and the back board 500 may be connected via a support plate, which is elastic, and two ends of the support plate are respectively connected to the light board 210 and the back board 500 via screws or bonded via double-sided tape.

[0129] Exemplarily, the lamp board 210 and the back panel 500 can be connected by an elastic block, which can be a cylindrical, conical or other structure. The two ends of the elastic block can respectively abut the lamp board 210 and the back panel 500, and the two ends of the elastic block can respectively bond to the lamp board 210 and the back panel 500.

[0130] [Exciter]

[0131] In some embodiments, the actuator 400 can be any one or more of an electromagnetic actuator, a magnetostrictive actuator, and a piezoelectric actuator, which are highly applicable. In some embodiments, the actuator 400 can also include a magnetic field generating unit (e.g., a magnet) and a vibration coil. The magnetic field generating unit is used to generate a magnetic field. By inputting a continuously changing current into the vibration coil, the force exerted by the vibration coil in the magnetic field generated by the magnetic field generating unit continuously changes, thereby generating vibration.

[0132] Figure 10 This is a cross-sectional schematic diagram of an actuator of a display device according to some embodiments of the present application. Figure 11 This is a cross-sectional diagram of a spring wave of a display device according to some embodiments of the present application. Figure 12 This is a schematic diagram of the structure of the elastic wave of the display device of some embodiments of the present application. Figure 13 This is a schematic diagram of the structure of the elastic wave of the display device of some embodiments of the present application. Figure 14 This is a cross-sectional diagram of a spring wave of a display device according to some embodiments of the present application. Figure 15 This is a cross-sectional diagram of a spring wave of a display device according to some embodiments of the present application. Figure 16 This is a schematic diagram of the structure of the elastic wave of the display device of some embodiments of the present application. Figure 17 Schematic diagram of the structure of the elastic wave of the display device in some embodiments of the present application.

[0133] Please refer to Figures 10 to 17 In some embodiments, the actuator 400 includes an actuator 410 , wherein a vibration output end of the actuator 410 is connected to a joint of the light board 210 .

[0134] In some embodiments, the actuator 400 includes a damper 420 , one end of the damper 420 is connected to the actuator 410 , and the other end of the damper 420 is connected to the housing 430 .

[0135] In some embodiments, actuator 400 includes a housing 430 .

[0136] When the exciter 400 is activated, the actuator 410 vibrates and drives the light board 210 to vibrate. The vibration force is transmitted to the display panel 100 via the gas in the gas layer M, driving the display panel 100 to vibrate and produce sound. In this way, the display device of the present embodiment can achieve front-side sound, and the position of the sound image is approximately coincident with the center position of the screen, achieving a unified audio and video, and providing a better audio-visual effect for the user.

[0137] In some embodiments, the central axis of the actuator 400 is perpendicular to the light board 210 , and the vibration output direction of the actuator 400 is along the central axis and perpendicular to the surface of the display device.

[0138] The vibration output end of the actuator 410 forms a connection structure 411 to increase the connection area between the actuator 410 and the light board 210 to prevent the actuator 410 and the light board from being separated from each other.

[0139] In some embodiments, the connection structure 411 is in a sheet shape, which can not only provide a larger connection area between the actuator 410 and the light board 210 , but also help reduce the weight of the exciter 400 .

[0140] The central axis of the damper 420 in this embodiment of the present application coincides with the central axis of the actuator 400. The damper 420 includes a main body 4201, a first connecting portion 4202, and a second connecting portion 4203. The main body 4201 is arranged in a plane parallel to the display panel. The main body 4201 is annular and radially wavy, providing elasticity to the damper 420. The inner end of the main body 4201 is bent to form the first connecting portion 4202, which is connected to the actuator 410. The outer end of the main body 4201 is bent to form the second connecting portion 4203, which is connected to the housing 430. The second connecting portion 4203 can be directly connected to the housing 430, or it can be indirectly connected to the housing 430 via other components.

[0141] For example, the first connection portion 4202 and the second connection portion 4203 are both sheet-like structures, which is beneficial for increasing the connection area between the damper 420 and the housing 430 and the actuator 410, which not only helps to improve the stability of the connection, but also facilitates heat transfer.

[0142] In some embodiments of the present application, actuator 400 employs a damper 420 to transfer heat generated by the vibration of actuator 410 to housing 430 for dissipation. This allows heat generated by actuator 410 to be dissipated not only through air but also through damper 420, lowering the temperature of actuator 410 and minimizing the impact of localized temperature on image display quality. Furthermore, the provision of a first connecting portion 4202 increases the connection area with actuator 410, while the provision of a second connecting portion 4203 increases the connection area with housing 430, enhancing heat dissipation.

[0143] In some embodiments of the present application, the damper 420 increases the heat conduction path of the actuator 410. The thermal conductivity of the damper 420 is approximately 3 to 4 times that of copper. The lateral thermal conductivity of the damper 420 can reach 1000 W / m·K, which is significantly more efficient than air heat dissipation. This can reduce the temperature of the actuator 410 and the local temperature of the display device screen where sound is emitted, avoid "hot" spots on the screen, reduce unevenness in screen brightness and color, and increase the maximum power and operating reliability of the actuator or speaker.

[0144] In some embodiments of the present application, the thermal conductivity of the elastic wave 420 is several times that of general metal materials such as copper and aluminum, so that the heat of the actuator 410 can be mainly transferred to the actuator body through the elastic wave 420, thereby reducing the temperature of the vibration output end of the actuator 410 and reducing the impact of local temperature on the image display quality of the display device.

[0145] In some embodiments, the damper 420 is bonded to the actuator 410 and the housing 430 , respectively. For example, the damper 420 is bonded to the actuator 410 and the housing 430 , respectively, by glue, and the connection method is simple and stable.

[0146] In some embodiments, damper 420 includes a stacked fiber layer 421 and a thermally conductive layer 422. Fiber layer 421 includes, but is not limited to, mesh or fiberglass mesh, and has been resin-impregnated and cured. Thermally conductive layer 422 can be a graphene film, made from flake graphite, oxidized to form a graphene oxide slurry, and then coated, sintered, reduced, and rolled. Alternatively, thermally conductive layer 422 can be formed by coating or spraying a thermally conductive material onto fiber layer 421.

[0147] In some examples, the heat conductive layer 422 is flexible, so that the spider 420 can have a certain elastic deformation capability.

[0148] A possible manufacturing process for the Dart Wave 420 includes: first, using flake graphite as the raw material, undergoing oxidation and pulping processes to form a graphene oxide slurry; then applying it to form a base film, followed by sintering, reduction, and calendaring processes to form a graphene membrane; second, using fiber mesh cloth as the raw material, impregnating the fiber mesh cloth with resin to form a fiber membrane; finally, stacking the graphene membrane and fiber membrane, and embossing them into a wavy shape. After curing, the Dart Wave 420 with high thermal conductivity is formed.

[0149] In some embodiments of the present application, the damper 420 utilizes a fiber layer 421 as a skeleton and is formed by combining the fiber layer 421 with a heat-conducting layer 422. This damper 420 is not only elastic but also has high thermal conductivity, facilitating the transfer of heat generated by the actuator 410 to the housing 430 while reducing the amount of heat generated by the actuator 410 that is transferred to the display panel.

[0150] In some embodiments, the damper 420 includes a stacked fiber layer 421 and a heat-conducting layer 422 . The fiber layer 421 includes two layers, and the heat-conducting layer 422 is located between the two fiber layers 421 .

[0151] In some other embodiments, the damper 420 includes a fiber layer 421 and a heat conducting layer 422 that are stacked. The heat conducting layer 422 includes two layers, and the fiber layer 421 is located between the two heat conducting layers 422 .

[0152] In some other embodiments, the damper 420 includes multiple fiber layers 421 and multiple heat-conducting layers 422 , and the multiple fiber layers 421 and the multiple heat-conducting layers 422 are alternately stacked.

[0153] In some embodiments of the present application, the damper 420 is provided with multiple fiber layers 421 to improve the structural strength of the damper 420 ; and is provided with multiple heat-conducting layers 422 to improve the thermal conductivity of the damper 420 .

[0154] In some embodiments, the thermally conductive layer 422 contacts the outer shell 430, which improves heat transfer efficiency and, in turn, the heat dissipation efficiency of the actuator 410. When the thermally conductive layer 422 is located on at least one surface of the damper 420, that surface directly contacts the outer shell 430. When the thermally conductive layer 422 is located within the inner layer of the damper 420, for example, between two fiber layers 421, the fiber layer 421 of the damper 420 facing the outer shell 430 is provided with a notch, allowing the thermally conductive layer 422 to be arranged on the surface of the damper 420 and, in turn, contact the outer shell 430. A notch is provided in the fiber layer 421 corresponding to the second connection portion 4203 of the damper 420, allowing the thermally conductive layer 422 to be arranged on the surface of the damper 420 and, in turn, contact the outer shell 430.

[0155] It is understandable that the heat conducting layer 422 may be in direct contact with the housing 430 , or when the heat conducting layer 422 is indirectly connected to the housing 430 through other components, the heat conducting layer 422 may be in indirect contact with the housing 430 through other components.

[0156] In some embodiments of the present application, the damper 420 includes a stacked thermally conductive film 423 and a fiber layer 421, wherein the thermally conductive film 423 is provided with a plurality of heat dissipation holes 4231. The material and preparation method of the fiber layer 421 can be the same as those in the above-described embodiment. The thermally conductive film 423 is then prepared and formed, and the thermally conductive film 423 is formed into an integrated damper 420 through processes such as bonding or hot melting. The heat dissipation holes 4231 provided on the thermally conductive film 423 can be circular holes, elliptical holes, polygonal holes, irregular holes, etc.; the plurality of heat dissipation holes 4231 can be arranged in a matrix on the thermally conductive film 423, such as a rectangular matrix or a circular matrix. The embodiments of the present application do not limit the number, shape, and arrangement of the heat dissipation holes 4231.

[0157] Illustratively, the thickness of the thermally conductive film 423 may be 100 μm to 1000 μm, for example, 200 μm, 300 μm, 400 μm, 500 μm, 600 μm, 700 μm, 800 μm, 900 μm, etc.

[0158] The damper 420 of the embodiment of the present application is provided with a fiber layer 421 as a skeleton, and a thermally conductive film 423 is provided with a plurality of heat dissipation holes 4231 on the thermally conductive film 423 to improve the heat dissipation efficiency of the thermally conductive film 423; moreover, the thermally conductive film 423 can also have a certain degree of flexibility.

[0159] In some embodiments of the present application, the actuator 400 further includes a pressure ring 440, which is configured to press the damper 420 against the housing 430 and is thermally conductive. For example, the pressure ring 440 may be metal to ensure efficient heat transfer. The second connection portion 4203 of the damper 420 is pressed against the housing 430 by the pressure ring 440, thereby enhancing the stability and tightness of the connection between the damper 420 and the housing 430 and facilitating heat transfer.

[0160] For example, the pressure ring 440 and the housing 430 , as well as the pressure ring 440 and the damper 420 , can be bonded together, and the connection method is simple and stable.

[0161] Taking the exciter 400 as an electromagnetic exciter as an example, the electromagnetic exciter includes a magnetic component 450 and a voice coil, wherein the magnetic component 450 is configured to generate a magnetic field, and the voice coil vibrates along the axis direction of the voice coil in the magnetic field.

[0162] Magnetic assembly 450 includes a magnetic permeable member 451 and a magnetic member 452 , with a magnetic air gap N formed between the magnetic permeable member 451 and the magnetic member 452 . Magnetic permeable member 451 is cylindrical with an opening, and magnetic member 452 is disposed on the bottom surface of magnetic permeable member 451 . A gap is formed between the inner wall surface of magnetic permeable member 451 and magnetic member 452 , forming the magnetic air gap N. Magnetic assembly 450 is configured to provide a stable magnetic field in the magnetic air gap N.

[0163] One end of the voice coil is connected to the light board 210. A sheet-like connecting structure 411 can also be provided between the voice coil and the light board 210 to increase the connection area between the voice coil and the light board 210 and prevent them from becoming detached from each other. The other end of the voice coil is inserted into the magnetic air gap N, and the voice coil is fixed to the housing 430 by a spring. As the magnetic field changes, the voice coil is forced to reciprocate along its own axis. In other words, when the exciter 400 is an electromagnetic exciter, the voice coil constitutes the actuator 410, and the end of the actuator 410 facing away from its vibration output end is located within the magnetic air gap N.

[0164] In this way, under the influence of the magnetic field, the electromagnetic force causes the voice coil to resonate at a higher frequency, directly vibrating the light board 210. The reaction force of the electromagnetic force causes the larger actuator 400 to resonate at a lower frequency. The actuator 400 housing has no fixed support and vibrates with the vibration of the driven light board 210.

[0165] The magnetic member 451 is fixedly connected to the housing 430, and the other end of the damper 420 is connected to the housing 430 through the magnetic member 451. Specifically, the second connecting portion 4203 of the damper 420 is pressed against the magnetic member 451 via the pressure ring 440. For example, the second connecting portion 4203 and the magnetic member 451, the pressure ring 440 and the magnetic member 451, and the pressure ring 440 and the housing 430 are bonded together, providing a simple and stable connection.

[0166] The exciter 400 of some embodiments of the present application reduces the width of the exciter 400 by connecting the elastic wave 420 to the housing 430 through the magnetic conductive member 451. Since the axial dimension of the actuator 410 is relatively large, the stacking and pressing of the pressure ring 440, the magnetic conductive member 451 and the housing 430 will not affect the overall thickness of the exciter 400. The connection method of the elastic wave 420 set in this way can not only ensure the stability of the connection, but also help to make the structure of the exciter 400 compact.

[0167] Specifically, the magnetic conductive component 451 of some embodiments of the present application includes a U-shaped body and a third connecting portion. The two ends of the opening of the U-shaped body are bent and extended away from each other to form the third connecting portion, which is connected to the shell 430.

[0168] In some embodiments, ventilation holes are provided at the portion of the magnetic conductive member 451 that contacts the damper 420 to improve the heat dissipation efficiency of the magnetic conductive member 451 and increase the amount of heat dissipated by the actuator 410 through the damper 420. The ventilation holes can be circular, and the present embodiment is not limited to the shape, number, or arrangement of the ventilation holes.

[0169] In some embodiments, the portion of the housing 430 that contacts the magnetic conductive member 451 is provided with ventilation holes, which can be opposite to the ventilation holes to further improve heat dissipation efficiency. The ventilation holes can be circular holes, and the embodiment of the application does not limit the shape, number, and arrangement of the ventilation holes.

[0170] In some embodiments, the housing 430 of the actuator 400 is connected to the back plate 500 via a fixing pin, and the fixing pin may be perpendicular to the back plate 500. An elastic pad 460 is provided on the housing 430, and the housing 430 is connected to the back plate 500 via the elastic pad 460.

[0171] Among them, the material of the elastic pad 460 can be silicone, rubber, etc., the elastic pad 460 can be sleeved on the outside of the fixing pin, a matching hole is set on the outer shell 430, and a snap-in groove for snapping with the outer shell 430 is provided on the outer wall surface of the elastic pad 460. In this way, there are partial elastic pads 460 on both sides of the matching hole, that is, the cross-sectional shape of the elastic pad 460 can be approximately I-shaped, so as to avoid interference between the outer shell 430 and the fixing pin or the back plate 500 during the vibration of the exciter 400. This embodiment does not limit the structure, material, etc. of the elastic pad 460.

[0172] Figure 9 Partial cross-sectional view of the display device of some embodiments of the present application Figure 2 .

[0173] Please refer to Figure 9 Since a gas layer M can be formed between the lamp board 210 and the optical film assembly 110, when the exciter 400 drives the lamp board 210 to vibrate, the lamp board 210 can drive the display panel 100 to vibrate and make sound through the gas layer M. Therefore, the backlight assembly 200 can also include a support member 300, and the support member 300 can be arranged in the gas layer M, and the first end of the support member 300 can be connected to the lamp board 210, and the second end of the support member 300 can be in contact with the optical film assembly 110.

[0174] It is understood that the support member 300 is elastic and can be supported between the light board 210 and the optical film assembly 110 to prevent the backlight from colliding or rubbing with the optical film assembly 110 when vibrating, thereby preventing noise.

[0175] It should be noted that the support member 300 can be connected to the light board 210 by bonding, clamping, etc., or connected to the packaging material of the light source by bonding. To facilitate scattering of light from the light source, the interior of the support member 300 can be filled with bubbles, silicone, etc.

[0176] In some embodiments, the cross-sectional dimensions of the support member 300 may gradually decrease from one end of the light source to one end of the optical film assembly 110, that is, the support member 300 is approximately conical. The outer wall surface of the support member 300 may also be configured to be convex so that the light emitted by the light source is totally reflected within the support member 300. In addition, the outer wall surface of the support member 300 may be coated with an optical material, such as an elastic silicone layer, so that the light emitted by the light source is totally reflected within the support member 300 or only a portion of the light is emitted through the side wall surface of the support member 300.

[0177] It should be noted that the support member 300 can be clamped between the optical film assembly 110 and the light board 210, that is, under normal circumstances, the support member 300 is in a compressed state, and when the exciter 400 drives the light board 210 to vibrate back and forth, the support member 300 will expand and contract accordingly, and will not separate from the optical film assembly 110 or the light board 210, so as to avoid vibration transmission failure.

[0178] Illustratively, the height of the support member 300 in the natural state is greater than the gap of the gas in the gas layer M and less than the sum of the amplitude of the exciter 400 and the gap of the gas layer M. For example, the height of the support member 300 in the natural state can be half of the amplitude of the exciter 400 and the sum of the gap of the gas layer M.

[0179] In some embodiments, there may be multiple support members 300, and each lamp panel 210 may be provided with multiple support members 300. The exciter 400 may be provided at the center of the corresponding lamp panel 210. Multiple support members 300 may be distributed in an array around the exciter 400. The support members 300 may assist in transmitting the vibration of the exciter 400 in a balanced manner, that is, each area where the support members 300 are distributed may have components that assist in vibration transmission. The average distribution of the support members 300 makes the overall force of the display device more balanced, thereby improving the sound effect.

[0180] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, characterized in that: The display device includes: a display panel configured to display image information; a backlight assembly, the backlight assembly being located on the light incident side of the display panel, the backlight assembly comprising a plurality of lamp boards arranged in the same plane, with a cavity formed between the lamp boards and the display panel; a back plate, the back plate being arranged on a side of the backlight assembly away from the display panel, and the plurality of light boards being respectively connected to the back plate; An exciter is provided on a side of the back panel away from the light panel, and the exciter is connected to the light panel through the back panel; wherein, there are multiple exciters, and multiple exciters are correspondingly connected to multiple light panels, and the multiple exciters are configured to selectively drive the light panels to vibrate according to the image information, so that the display panel vibrates locally and makes sound.

2. The display device according to claim 1, wherein The plurality of lamp boards are sequentially arranged along the length direction of the display panel, and the plurality of lamp boards form a plurality of sound emission areas; the plurality of sound emission areas are symmetrically arranged relative to the central axis of the display device.

3. The display device according to claim 2, wherein: The plurality of light boards include a first light board and a second light board, wherein the first light board is connected to at least one exciter, and the second light board is not provided with the exciter; each sound emission area corresponds to at least one of the first light boards; The different sound emitting areas are arranged adjacent to each other; or, at least one second light board is arranged between the different sound emitting areas.

4. The display device according to claim 3, wherein: The multiple sound emission areas include a left main sound channel area and a right main sound channel area; the left main sound channel area and the right main sound channel area are symmetrically arranged relative to the central axis of the display device, and the left main sound channel area and the right main sound channel area correspond to at least two of the first light panels respectively; the second light panel is arranged between the left main sound channel area and the right main sound channel area.

5. The display device according to claim 3, wherein The multiple sound emission areas include a left main channel area, a right main channel area and a center channel area. The left main channel area, the center channel area and the right main channel area are arranged adjacent to each other in sequence along the length direction of the display panel; the left main channel area, the center channel area and the right main channel area respectively correspond to at least two of the first light boards; the second light board is provided on the side of the left main channel area away from the center channel area; the second light board is provided on the side of the right main channel area away from the center channel area.

6. The display device according to claim 3, wherein: The multiple sound emission areas include a left main channel area, a right main channel area, a center channel area, a left surround channel area, and a right surround channel area, wherein the left surround channel area, the left main channel area, the center channel area, the right main channel area, and the right surround channel area are arranged adjacent to each other in sequence along the length direction of the display panel; the second light panel is arranged below the sound emission area.

7. The display device according to any one of claims 1 to 6, characterized in that: It also includes a first adhesive member. There is a gap between the back plate and the light board. The first adhesive member is arranged in the gap, and two sides of the first adhesive member are respectively bonded to the back plate and the light board.

8. The display device according to claim 7, wherein: The first adhesive member is located between two adjacent lamp panels; the first adhesive member extends along a seam between the two adjacent lamp panels.

9. The display device according to any one of claims 1 to 6, characterized in that: It also includes a second adhesive member, a first side of which is bonded to the light board; the backboard is provided with an opening, and the exciter passes through the opening and is bonded to the second side of the second adhesive member.

10. The display device according to any one of claims 1 to 6, characterized in that: It also includes an optical film assembly, which is arranged between the light board and the display panel; there is a sealed gas layer between the light board and the optical film assembly, and when the exciter drives the light board to vibrate, the light board drives the display panel to vibrate and make sound through the gas layer.

Images