Display device

Abstract

The invention discloses display equipment, and relates to the technical field of display, and the display equipment comprises a display panel; the backlight assembly comprises a vibration area in the plane direction of the backlight assembly, the backlight assembly comprises lamp panels, the lamp panels are located on the light-in side of the optical film assembly and comprise the first lamp panel and the second lamp panel, the first lamp panel is arranged in the vibration area, the second lamp panel is arranged outside the vibration area, and the optical film assembly and the display panel are located on the light-out side of the optical film assembly. A cavity is formed between the optical film assembly and the display panel; the supporting and transferring assembly is supported between the first lamp panel and the optical film assembly; and the exciter is connected with the first lamp panel to transmit vibration to the display panel through the first lamp panel, the optical film assembly and the cavity so as to drive the display panel to vibrate and produce sound. According to the display equipment, the display panel can realize low-frequency sound production performance by using relatively small amplitude, and the vibration transmission efficiency is high.

Description

Technical Field

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

[0002] With the development of science and technology and the improvement of people's living standards, display devices are increasingly used in people's work and life.

[0003] In related technologies, a display device includes a display panel, a light board, an electromagnetic exciter and other structures. The vibration energy of the electromagnetic exciter is transmitted to the display panel through the light board and the cavity between the light board and the display panel, thereby causing the display panel to vibrate and produce sound.

[0004] However, the display panel will generate the maximum amplitude at the exciter position, and the amplitude decreases sharply away from the exciter position, affecting the sound performance of the display device in certain frequency bands. Summary of the Invention

[0005] Some embodiments of the present application provide a display device, in which a display panel can achieve low-frequency sound performance with a smaller amplitude, and can also improve vibration transmission efficiency to ensure sound effects.

[0006] Some embodiments of the present application provide a display device, comprising: a display panel configured to display image information; a backlight assembly, the backlight assembly including a vibration area in its own plane direction, the backlight assembly including: a lamp board, the lamp board being located on the light incident side of the optical film assembly, the lamp board including a first lamp board and a second lamp board, the first lamp board being arranged in the vibration area, the second lamp board being arranged outside the vibration area, the first lamp board being configured to vibrate relative to the second lamp board; an optical film assembly, the display panel being located on the light emitting side of the optical film assembly, a cavity being formed between the optical film assembly and the display panel, a support transfer assembly, the support transfer assembly being supported between the first lamp board and the optical film assembly; an exciter, the exciter being connected to the first lamp board to transfer vibration to the display panel through the first lamp board, the optical film assembly and the cavity, so as to drive the display panel to vibrate and make sound; at least one of the first lamp board and the optical film assembly is provided with a reinforcement structure.

[0007] According to the display device of the present application, since the vibration transmission between the exciter, the first light panel, and the optical film assembly is directly driven, the vibration transmission efficiency can be ensured, while the vibration transmission between the optical film assembly and the display panel through the closed cavity is indirectly driven, which can make the display panel evenly stressed across the entire plane. Therefore, the display panel of this embodiment can achieve low-frequency sound performance with a smaller amplitude (0.3mm). In addition, by providing a reinforcing structure for strengthening the strength of at least one of the first light panel and the optical film assembly, the structural strength of the first light panel or the optical film assembly can be enhanced, and the area of the vibration segmentation area can be minimized or even eliminated to ensure the transmission efficiency of vibration energy and the sound effect.

[0008] In some embodiments, the optical film assembly includes a diffuser plate, the support transmission assembly includes a plurality of support members, the plurality of support members are arranged at intervals along the first light board, one end of the support member is connected to the first light board, and the other end is connected to the diffuser plate.

[0009] In some embodiments, the reinforcement structure includes a first reinforcement structure, which is provided on a side of the first light panel facing away from the diffusion plate, and the first reinforcement structure is ring-shaped. There is at least one first reinforcement structure.

[0010] In some embodiments, there are multiple first reinforcement structures, and the multiple first reinforcement structures are distributed at radial inward and outward intervals along the first reinforcement structure; the support members are divided into multiple transmission groups corresponding to the first reinforcement structures, and the several support members in each transmission group are distributed at circumferential intervals along the corresponding first reinforcement structure, and are arranged relative to the corresponding first reinforcement structure along the thickness direction of the lamp board.

[0011] In some embodiments, there is one first reinforcement structure, and the exciter includes a first exciter and a second exciter. The first exciter is located at the center of the first lamp panel, and the first reinforcement structure surrounds the first exciter. There are multiple second exciters, and the multiple second exciters are evenly distributed on the first reinforcement structure along the circumference of the first reinforcement structure.

[0012] In some embodiments, the reinforcement structure further includes a second reinforcement structure, the second reinforcement structure includes a vibration buffer, and the vibration buffer is supported between the second lamp panel and the diffusion plate.

[0013] In some embodiments, the light board includes a board body and a light source, the light source is arranged on the side of the board body facing the optical film assembly, the board body includes a base layer and a composite reinforcement layer, and the composite reinforcement layer constitutes the reinforcement structure.

[0014] In some embodiments, the display device further includes: a back panel, at least a portion of the structure of the back panel is disposed on a side of the light panel facing away from the display panel, and the second light panel is fixedly connected to the back panel.

[0015] In some embodiments, the first light board and the second light board are elastically connected so that the first light board moves relative to the second light board under the push of the exciter.

[0016] In some embodiments, the first light panel is connected to the back panel via a first connector; or the exciter is fixedly connected to the back panel to support the first light panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0018] Figure 1 A cross-sectional view of a display device according to some embodiments of the present application;

[0019] Figure 2 This is a schematic structural diagram of a backlight assembly according to some embodiments of the present application;

[0020] Figure 3 This is a schematic structural diagram of a first light board in some embodiments of the present application;

[0021] Figure 4 This is a schematic structural diagram of a first light board in some embodiments of the present application;

[0022] Figure 5 This is a schematic structural diagram of a first light board in some embodiments of the present application;

[0023] Figure 6 This is a schematic diagram of the coordination between the first light board and the second light board in some embodiments of the present application;

[0024] Figure 7 This is a schematic diagram of the coordination between the first light board and the second light board in some embodiments of the present application;

[0025] Figure 8 This is a schematic diagram of the coordination between the first light board and the second light board in some embodiments of the present application;

[0026] Figure 9 This is a schematic diagram of the coordination between the first light board and the second light board in some embodiments of the present application;

[0027] Figure 10This is a schematic diagram of the coordination between the first light board and the second light board in some embodiments of the present application;

[0028] Figure 11 This is a schematic diagram of the coordination between the first light board and the second light board in some embodiments of the present application;

[0029] Figure 12 This is a schematic structural diagram of a first light board in some embodiments of the present application;

[0030] Figure 13 This is a schematic diagram of an operation scenario between a display device and a control device shown in an embodiment of the present application;

[0031] Figure 14 A block diagram of a display device according to an embodiment of the present application;

[0032] Figure 15 This is a schematic structural diagram of an actuator according to an embodiment of the present application.

[0033] Description of reference numerals:

[0034] 10-display device; 20-smart device; 30-server;

[0035] 100-display panel; 110-optical film assembly;

[0036] 200-backlight assembly; 200a-vibration area; 200b-vibration suppression area;

[0037] 210 - lamp board; 210a - first lamp board; 210b - second lamp board; 212 - sound board; 2121 - sub-board; 213 - first connecting member; 221 - second connecting member; 230 - board body; 231 - base layer; 234 - composite reinforcement layer; 240 - light source; 250 - reinforcement structure; 250a - first reinforcement structure; 250b - second reinforcement structure;

[0038] 300-support member;

[0039] 400 - actuator; 400a - first actuator; 400b - second actuator; 410 - actuator; 411 - connection structure; 420 - damper; 4201 - body; 4202 - first connection part; 4203 - second connection part; 430 - housing; 440 - pressure ring; 450 - magnetic assembly; 451 - magnetic conductive member; 452 - magnetic member; 460 - elastic pad;

[0040] 500-back panel;

[0041] 900 - control device; 901 - tuner and demodulator; 902 - communicator; 903 - detector; 904 - external device interface; 905 - controller; 906 - display; 907 - audio output interface; 908 - memory; 909 - power supply; 910 - user interface;

[0042] M-cavity. DETAILED DESCRIPTION

[0043] With the development of science and technology and the improvement of people's living standards, display devices are increasingly used in people's work and life. In related technologies, the display device includes a display panel, a light board, an electromagnetic exciter and other structures. The vibration energy of the electromagnetic exciter is transmitted to the display panel through the light board and the cavity between the light board and the display panel, so that the display panel vibrates and sounds. However, since the electromagnetic exciter for transmission is located at a certain point on the light board, the display panel generates the maximum amplitude at the exciter position, and the amplitude decreases sharply away from the exciter position. The actual vibration area is small. If a higher sound pressure is required, a large amplitude is required, but a large amplitude affects the reliability and display performance of the display panel, resulting in the display device being able to only achieve small-amplitude medium and high-frequency sounds above 300Hz, and the low-frequency sound performance is poor.

[0044] In view of this, some embodiments of the present application provide a display device. Since the vibration transmission between the exciter, the first light board, and the optical film assembly is directly driven, the vibration transmission efficiency can be ensured. The vibration transmission between the optical film assembly and the display panel is indirectly driven through a closed cavity, which can make the display panel uniformly stressed across the entire plane. Therefore, the display panel of this embodiment can achieve low-frequency sound performance with a smaller amplitude (0.3mm). In addition, by providing at least one of the first light board and the optical film assembly with a reinforcing structure for strengthening its own strength, the structural strength of the first light board or the optical film assembly can be enhanced, and the area of the vibration segmentation area can be minimized or even eliminated to ensure the transmission efficiency of the vibration energy and the sound effect.

[0045] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0046] The display device 10 of this embodiment can be a liquid crystal display device 10. For example, the display device 10 can be a Mini-LED display device. Compared to the light panels in OLED display devices, the light panels of Mini-LED display devices are much harder, and the actuator 400 can drive the entire Mini-LED light panel to vibrate. The display device can have various implementation forms, such as a television, a smart TV, a monitor, an electronic whiteboard, an electronic table, etc.

[0047] Figure 13 This is a schematic diagram of an operation scenario between a display device and a control device according to an exemplary embodiment of the present application. Figure 13 As shown, the user can operate the display device 10 through the smart device 20 or the control device 900. In some embodiments, the display device 10 also communicates data with the server 30. The display device 10 can be allowed to communicate via a local area network (LAN), a wireless local area network (WLAN), and other networks. The server 30 can provide various content and interactions to the display device 10. The server 30 can be a cluster or multiple clusters, and can include one or more types of servers.

[0048] Figure 14 A schematic diagram of the structure of a display device in an example is shown in FIG. Figure 14 As shown, the display device 10 includes a tuner-demodulator 901 , which receives broadcast television signals via a wired or wireless reception method, and demodulates audio and video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals.

[0049] In some embodiments, the display device 10 includes a controller 905 ; in some embodiments, the controller includes a processor, a video processor, an audio processor, a graphics processor, RAM, ROM, and first to nth interfaces configured as input / output.

[0050] In some embodiments, the display device 10 includes an audio output interface 907;

[0051] In some embodiments, the display device 10 includes a memory 908;

[0052] In some embodiments, the display device 10 includes a power supply 909;

[0053] In some embodiments, the display device 10 includes a display 906, which includes a display screen component configured to present a picture, and a driving component for driving the image display, and is configured to receive an image signal output from a controller to display video content, image content, and a menu control interface component and a user control UI interface.

[0054] The display 906 may be a liquid crystal display, an OLED display, or a projection display, and may also be a projection device and a projection screen.

[0055] In some embodiments, the display device 10 includes a communicator 902, which is a component configured to communicate with an external device or server according to various communication protocols. For example, the communicator 902 may include at least one of a Wi-Fi module, a Bluetooth module, a wired Ethernet module, or other network communication protocol chip or a near-field communication protocol chip, as well as an infrared receiver. The display device 10 can establish transmission and reception of control signals and data signals with the control device 900 or the server 30 via the communicator 902.

[0056] In some embodiments, the display device 10 includes at least one of the user interfaces 910 , and the user interface 910 may be configured to receive a control signal from the control device 900 (eg, an infrared remote controller, etc.).

[0057] In some embodiments, the display device 10 includes a detector 903 configured to collect signals from the external environment or external interactions. For example, the detector 903 may include a light receiver configured as a sensor to collect ambient light intensity; or the detector 903 may include an image collector, such as a camera, configured to collect external environmental scenes, user attributes, or user interaction gestures; or the detector 903 may include a sound collector, such as a microphone, configured to receive external sounds.

[0058] In some embodiments, the display device 10 includes an external device interface 904. The external device interface 904 may include, but is not limited to, any one or more of the following: a high-definition multimedia interface (HDMI), an analog or digital high-definition component input interface (component), a composite video input interface (CVBS), a USB input interface (USB), an RGB port, etc. It may also be a composite input / output interface formed by multiple of the above interfaces.

[0059] In some embodiments, the controller 905 and the tuner / demodulator 901 may be located in different separate devices, that is, the tuner / demodulator 901 may also be located in an external device of the main device where the controller 905 is located, such as an external set-top box.

[0060] The controller 905 controls the operation of the display device and responds to user operations through various software control programs stored in the memory. The controller 905 controls the overall operation of the display device 10. For example, in response to receiving a user command configured to select a UI object to be displayed on the display 906, the controller 905 can perform operations related to the object selected by the user command.

[0061] In some embodiments, the controller includes a central processing unit (CPU), a video processor, an audio processor, a graphics processing unit (GPU), RAM Random Access Memory (RAM), ROM (Read-Only Memory, ROM), and at least one of a first interface to an nth interface configured as input / output, a communication bus (Bus), etc.

[0062] The user may input a user command through a graphical user interface (GUI) displayed on the display 906, and the user input interface receives the user input command through the graphical user interface (GUI). Alternatively, the user may input a user command through a specific voice or gesture, and the user input interface may recognize the voice or gesture through a sensor to receive the user input command.

[0063] A user interface is the medium for interaction and information exchange between an application or operating system and the user. It converts information between its internal form and a user-friendly format. A common user interface is the graphical user interface (GUI), which refers to a graphical user interface related to computer operations. It can be an icon, window, control, or other interface element displayed on an electronic device's display. Controls can include visual interface elements such as icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, and widgets.

[0064] The display device 10 has a top side, a bottom side, a left side, a right side, and a front side and a back side. The left side and right side of the display device 10 refer to the left and right sides of the user when the user is facing the display surface of the display device. Accordingly, the side of the display device 10 facing the user is the front side, the side of the display device 10 facing away from the user is the back side, the top side of the display device 10 is the top side, and the bottom side of the display device 10 is the bottom side.

[0065] refer to Figure 1The display device 10 includes a display panel 100, which can be configured to display image information such as text and images. The display panel 100 includes a display area and a circuit board located on one side of the display area, and the driving display of the entire display panel 100 is realized by the circuit board. The display panel 100 is the main component of the display device 10, which mainly includes a liquid crystal display panel 100. The liquid crystal display panel 100 includes a color filter (CF) substrate, a thin film transistor (TFT) substrate (also called an array substrate) and a liquid crystal (LC) layer. The liquid crystal layer is located between the color filter substrate and the array substrate. Among them, the thin film transistor substrate is provided with data lines and scan lines. The direction of the liquid crystal molecules is controlled by whether the data lines and the scan lines are energized or not, so that the light from the light source 240 is emitted through the color filter substrate and generates a picture of a preset color.

[0066] Since the liquid crystal display panel 100 itself cannot emit light, in order for the display device 10 to display properly, the display device 10 also includes a backlight assembly 200, which can be a direct-lit backlight assembly 200. The backlight assembly 200 includes a lamp board 210. The lamp board 210 is located on the light-incident side of the optical film assembly 110 and is configured to generate light. The lamp board 210 is configured to provide sufficient brightness and evenly distributed backlight to the display panel 100. The display panel 100 is located on the light-exiting side of the optical film assembly 110 and can modulate the backlight as needed to display different images.

[0067] In some embodiments, the display 906 includes a display panel 100 and a backlight assembly 200 .

[0068] Combine Figure 1 and Figure 2 The backlight assembly 200 further includes an optical film assembly 110. A cavity M is formed between the optical film assembly 110 and the display panel 100, and gas is contained in the cavity M.

[0069] In some embodiments, the cavity M can be in a closed state. In this case, the closed cavity M can be equivalent to a damping spring. When the coil assembly 410 vibrates, the vibration energy is transferred to the lamp board 210. The lamp board 210 compresses the gas in the cavity M. In this way, the gas can transfer the vibration energy to the display panel 100 to drive the display panel 100 to vibrate. The display panel 100 makes sound through the sound waves emitted by the vibration, so that the display panel 100 can be used for display and can also be used to replace the speaker to make sound.

[0070] Of course, the present application is not limited to this. The cavity M may also be in an unsealed state. In this case, a support transmission assembly (hereinafter referred to as the support transmission assembly) may be provided between the lamp board 210 provided with the exciter 400 and the display panel 100. The support transmission assembly is used to transmit vibration energy from one side of the lamp board 210 to the display panel 100, thereby driving the display panel 100 to vibrate and produce sound. It is understood that even if the cavity M is in a sealed state, the support transmission assembly may be provided to improve the efficiency of vibration transmission and maintain a stable gap in the cavity M.

[0071] The backlight assembly 200 includes a vibration region 200a and a vibration suppression region 200b (ie, a region other than the vibration region 200a) in its own plane direction. Figure 2 As shown, the vibration region 200a can be located in the middle of the backlight assembly 200, and the vibration suppression region 200b surrounds the vibration region 200a. The lamp board 210 includes a first lamp board 210a and a second lamp board 210b, wherein the first lamp board 210a is located in the vibration region 200a, and the second lamp board 210b is located in the vibration suppression region 200b. The backlight assembly 200 also includes a support and transmission assembly. The support and transmission assembly is supported between the first lamp board 210a and the optical film assembly 110. In other words, the support and transmission assembly can transmit vibration from one side of the first lamp board 210a to the optical film assembly 110, and then the optical film assembly 110 transmits the vibration to the display panel 100 through the compression of the cavity M. The second lamp board 210b in the vibration suppression region 200b is not used to transmit vibration. In this way, the first lamp board 210a is configured to vibrate relative to the second lamp board 210b.

[0072] In order to achieve vibration of the first lamp board 210a within the vibration area 200a, the display device 10 includes an exciter 400, and the exciter 400 may include an exciter body and an actuator 410, wherein the actuator 410 is connected to the first lamp board 210a to transmit the vibration to the display panel 100 through the first lamp board 210a, the optical film assembly 110 and the cavity M, so as to drive the display panel 100 to vibrate and make sound. In other words, the exciter 400 can directly drive the first lamp board 210a to vibrate, and when the exciter 400 drives the first lamp board 210a to vibrate, the vibration energy is transmitted to the display panel 100 in sequence via the first lamp board 210a, the optical film assembly 110 and the enclosed cavity M to drive the display panel 100 to vibrate. The display panel 100 makes sound through the sound waves emitted by the vibration, so that the display panel 100 can be used for both display and to replace the speaker to make sound.

[0073] Combine Figure 3-Figure 5When either the first lamp panel 210a or the optical film assembly 110 vibrates, the amplitude corresponding to the location of the exciter 400 is the largest, while the amplitude in the area beyond a certain distance from the exciter 400 decreases sharply. This area is the vibration separation area of the first lamp panel 210a and the optical film assembly 110. In this embodiment, to ensure vibration transmission efficiency and prevent the vibration energy from decaying too quickly, at least one of the first lamp panel 210a and the optical film assembly 110 may be provided with a reinforcing structure 250 for enhancing its own strength. For example, the reinforcing structure 250 may be provided only on the first lamp panel 210a, or only on the optical film assembly 110, or alternatively, the reinforcing structure 250 may be provided on both the first lamp panel 210a and the optical film assembly 110. By providing the reinforcing structure 250, the structural strength of the first lamp panel 210a or the optical film assembly 110 can be enhanced, and the area of the vibration separation area can be minimized or even eliminated, thereby ensuring the transmission efficiency of vibration energy and guaranteeing the sound generation effect.

[0074] In addition, it should be emphasized that the first lamp board 210a, the support transmission assembly and the optical film assembly 110 are connected in sequence, and there is a cavity M between the optical film assembly 110 and the display panel 100. Therefore, the vibration transmission between the exciter 400, the first lamp board 210a and the optical film assembly 110 is a direct drive, which can ensure the efficiency of vibration transmission; and the vibration transmission between the optical film assembly 110 and the display panel 100 is a viscous air gap transmission, which is an indirect drive, and the area of the optical film assembly 110 is equal to the area of the display panel 100. In this way, the indirect drive can make the display panel 100 uniformly stressed in the entire plane range, and the actual vibration area of the display panel 100 is larger than the solution with only direct drive in the related technology. In this way, the display device 10 of this embodiment can enable the display panel 100 to achieve low-frequency sound performance with a smaller amplitude (0.3mm), solving the shortcoming of the display panel 100 in the related technology that the display panel 100 cannot be driven with a large amplitude.

[0075] In addition, compared with the display devices using OLED light sources as light sources in the related art, because the OLED display screen is a self-luminous screen and the OLED display screen itself has a certain degree of flexibility, an exciter is set on the back of the OLED display screen, and the OLED display screen can be elastically deformed and make sounds under the excitation vibration of the exciter. However, in the liquid crystal display device 10 of the present application, the liquid crystal display device has a backlight assembly 200, and the exciter cannot be directly set on the back of the display panel 100. In addition, the lamp board in the backlight assembly 200 is relatively hard, making it difficult to couple and transmit its own vibration to the display panel 100, and the transmission efficiency of the vibration force is low. Therefore, a support transmission component can be set in the cavity M between the display panel 100 and the lamp board 210 of the Mini-LED display device 10 or other liquid crystal display devices 10, and it can be used as a vibration transmission medium to transmit the vibration of the lamp board 210 to the display panel 100, thereby improving the transmission efficiency of the vibration from the lamp board 210 to the display panel 100. In addition, the support member 300 can maintain the gap of the cavity M between the light board 210 and the display panel 100 within a preset range, thereby preventing the light source 240 and the display panel 100 from touching each other at a certain position and generating risks such as collision noise and abrasion.

[0076] According to the display device 10 of some embodiments of the present application, since the vibration transmission between the exciter 400, the first lamp panel 210a, and the optical film assembly 110 is directly driven, the vibration transmission efficiency can be ensured, and the vibration transmission between the optical film assembly 110 and the display panel 100 through the closed cavity M is indirectly driven, which can make the display panel 100 uniformly stressed in the entire plane. Therefore, the display panel 100 of this embodiment can use a smaller amplitude (0.3mm) to achieve low-frequency sound performance. In this way, the full-band sound performance of the display panel 100 is better. In addition, by providing a reinforcement structure 250 for strengthening its own strength on at least one of the first lamp panel 210a and the optical film assembly 110, the structural strength of the first lamp panel 210a or the optical film assembly 110 can be enhanced, and the area of the vibration segmentation area can be reduced as much as possible or even eliminated to ensure the transmission efficiency of the vibration energy and the sound effect.

[0077] In some embodiments, at least part of the structure of the back panel 500 is located on the side of the light board 210 facing away from the display panel 100 (such as the rear side of the light board 210). For example, the main body of the back panel 500 is located on the side of the light board 210 facing away from the display panel 100, and the frame of the back panel 500 is located around the light board 210. The second light board 210b is fixedly connected to the back panel 500. In some embodiments, the second light board 210b and the back panel 500 are fixedly connected by a second connecting member 221. The second connecting member 221 can be an adhesive such as a double-sided tape or foam. In this way, the back panel 500 can be used to support the backlight assembly 200 and the display panel 100. The material of the back panel 500 can be aluminum alloy, steel, etc. to provide effective support.

[0078] In some embodiments, the display panel 100 may include a display area and a circuit board located on one side of the display area, and the circuit board is used to drive and display the entire display panel 100. The display panel 100 is a major component of the display device 10, and mainly includes a liquid crystal display panel 100, a color filter (CF) substrate of the liquid crystal display panel 100, a thin film transistor (TFT) substrate (also known as an array substrate), and a liquid crystal (LC) layer, which is located between the color filter substrate and the array substrate. The thin film transistor substrate is provided with data lines and scan lines. The power supply of the data lines and scan lines controls the direction of the liquid crystal molecules to emit light from the light source 240 through the color filter substrate and generate a preset color image.

[0079] In some embodiments, combined Figure 1-Figure 5 as well as Figure 12 The light board 210 may include a board body 230 and a light source 240. The board body 230 may be an aluminum plate, a printed circuit board (PCB), or the like. The light source 240 may be a light-emitting diode (LED), a submillimeter light-emitting diode (Mini-Light Emitting Diode, Mini LED), or a micron-level light-emitting diode (Micro LED). There may be multiple light sources 240, and the multiple light sources 240 are arranged on the side of the board body 230 facing the display panel 100 and are arranged at intervals so that the light sources 240 provide backlight for the display panel 100. The light source 240 may be a lamp bead or a light bar, and the multiple light sources 240 may be fixed to the board body 230 by means of snap connection, threaded connection, or the like.

[0080] Sub-millimeter light emitting diodes (such as Mini-LEDs) and other types of light sources have relatively compact sizes, so the cavity M between the light board 210 and the liquid crystal display panel has a smaller gap, thereby reducing the thickness of the cavity M and improving the vibration transmission effect of the cavity M. Therefore, in this embodiment, the light source of the backlight module is described as a sub-millimeter light emitting diode (Mini-LED).

[0081] For example, the gap of the cavity M can be 0.3 mm to 10 mm, with the maximum gap of the cavity M being 10 mm. Alternatively, the gap of the cavity M can be 0.3 mm or 1 mm. For example, when the gap of the cavity M is 1 mm, the thickness of the cavity M is relatively small, which can improve the transmission efficiency of the vibration force output by the exciter. Alternatively, when the gap of the cavity M is 0.3 mm, the distance between the exciter 400 and the display panel 100 is closer, resulting in stronger vibration and better sound effects. When the gap of the cavity M is 10 mm, the thickness of the cavity M is relatively large, which can prevent collision between the display panel 100 and the light source 240 at a certain position during vibration. Specifically, the gap of the cavity M can be any one of 0.3mm-0.5mm, 0.5mm-0.8mm, 0.8mm-1.5mm, 1.5mm-2mm, 2mm-3mm, 3mm-5mm, 5mm-8mm, and 8mm-10mm, such as 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, and 10mm. It should be noted that the numerical values and numerical ranges involved in the embodiments of the present application are approximate values and may have a certain range of errors due to the influence of the manufacturing process. Those skilled in the art may consider such errors to be negligible.

[0082] In some embodiments, the optical film assembly 110 includes a diffuser that ensures uniform light distribution. The support and transmission assembly includes a plurality of support members 300 spaced apart along the first light panel 210a. One end of each support member 300 is connected to the first light panel 210a, and the other end is connected to the diffuser. This allows the support members 300 to function as a vibration transmission medium, transferring vibrations from one side of the first light panel 210a to the diffuser, thereby improving the efficiency of vibration transmission from the first light panel 210a to the display panel 100.

[0083] In addition, by providing the support member 300, the gap of the cavity M between the board body 230 and the display panel 100 can be maintained within a preset range, thereby preventing the light source 240 and the display panel 100 from touching each other at a certain position and generating collision noise.

[0084] Furthermore, because the optical film assembly 110 converts and evens the light generated by the light source of the light panel 210, even if the support member 300 is provided on the light-emitting side of the light panel 210, no shadow will be generated on the display panel 100, resulting in uneven brightness of the display panel 100. Thus, there are no restrictions on the shape and size of the support member 300, or the contact area between the support member 300 and the diffuser film 113. The cross-section of the support member 300 (the cross-section perpendicular to the display device) can be rectangular or cylindrical, or can be conical, trapezoidal, dumbbell-shaped, or other shapes.

[0085] It is understandable that the support member 300 may be made of a silicone material that is easy to guide light, and the hardness of the silicone material is relatively low. In other words, the support member 300 is a silicone member or a rubber member.

[0086] Furthermore, it should be noted that, considering that the internal temperature of the display device 10 changes during operation, materials such as silicone and rubber may age with temperature changes, resulting in reduced cushioning effect, reduced support strength, and reduced vibration transmission efficiency of the support member 300. In some embodiments, the support member 300 may also be a composite structure.

[0087] In some embodiments, the two ends of the support member 300 can be connected by negative pressure adsorption. For example, the two ends of the support member 300 can be provided with a suction cup structure, and the two ends of the support member 300 are fixedly connected to the light board 210 and the display panel 100 respectively through the suction cup structure, and the process is simple to implement.

[0088] In some embodiments, one end of the support member 300 is connected via a first adhesive structure 310, and the other end of the support member 300 is connected via a suction cup structure. For example, one end of the support member 300 is connected to the light board 210 via the first adhesive structure 310, and the other end of the support member 300 is fixedly connected to the display panel 100 via the suction cup structure. Thus, the support member 300 can be fixed using double-sided bonding or mechanical fixing, thereby achieving vibration linkage between the light board 210 and the display panel 100 and improving vibration transmission efficiency. However, double-sided bonding or mechanical fixing have the disadvantage of complex process implementation. Using a suction cup solution can improve the feasibility of the solution.

[0089] In some embodiments, the support member 300 may be made of a silicone material with a set transparency, and a plurality of bubble structures may be provided in the support member 300 or filled with light-guiding particles, such as silica particles, etc. Along the direction parallel to the plane where the silica particles are located, the distribution density of the bubble structure or light-guiding particles such as silica particles gradually decreases along the direction away from the longitudinal center axis of the support member 300, so as to utilize the bubble structure or light-guiding particles with the above-mentioned distribution pattern in combination with the shape of the support member 300, so that the support member 300 has a uniform light effect on the light emitted by the light source, and can make the uneven light intensity of the light source evenly distributed, which is beneficial to optimizing the display effect of the display device.

[0090] In some embodiments, the surface of the support member 300 is coated with a reflective film or a reflective material. In some embodiments, the support member 300 also has a light control effect. In local dimming display mode, the surface of the support member 300 is coated with a reflective film or a reflective material, so that light emitted from different light control areas is reflected by the surface of the support member 300 in other control areas. The support member 300 reduces the mutual influence of light between different light control areas, thereby avoiding light interference between different local dimming display areas.

[0091] The optical film assembly 110 may be of different types depending on the type of light emitted by the light source 240. For example, when the light source 240 emits white light, the optical film assembly 110 may include a reflective sheet, a light guide plate, a brightness enhancement film, etc. The reflective sheet is attached to the side of the plate body 230 where the light source 240 is located.

[0092] In some embodiments, combined Figure 3-Figure 5 The reinforcement structure 250 includes a first reinforcement structure 250a. The first reinforcement structure 250a is provided on the side of the first lamp board 210a facing away from the diffuser plate and is located in the vibration segmentation area of the first lamp board 210a. The first reinforcement structure 250a is annular. For example, the first reinforcement structure 250a can be a circular ring structure, or a square structure or other closed ring structure. There is at least one first reinforcement structure 250a, that is, the first reinforcement structure 250a can be one or more, and multiple refers to two or more. By providing the first reinforcement structure 250a on the first lamp board 210a, the first reinforcement structure 250a can be used to connect the different vibration areas 200a of the first lamp board 210a, so that different areas of the first lamp board 210a are subjected to uniform force, which is conducive to the first lamp board 210a forming a plane displacement vibration, that is, when vibrating, different areas of the first lamp board 210a are synchronously displaced, reducing the amplitude of the segmented vibration, so as to ensure the transmission efficiency of the vibration energy and ensure the sound effect.

[0093] In some embodiments, combined Figure 3 and Figure 4 There can be multiple first reinforcement structures 250a, and the multiple first reinforcement structures 250a are distributed at intervals inward and outward along the radial direction of the first reinforcement structure 250a. The support members 300 can be divided into multiple transmission groups, and the transmission groups correspond to the first reinforcement structures 250a. The several support members 300 in each transmission group are distributed at intervals in the circumferential direction of the corresponding first reinforcement structure 250a, and are arranged relative to the corresponding first reinforcement structure 250a along the thickness direction of the lamp board 210.

[0094] In this embodiment, on the basis of setting the first reinforcement structure 250a in the split vibration area 200a of the first lamp board 210a, the support member 300 is set in the position area corresponding to the first reinforcement structure 250a between the first lamp board 210a and the optical film assembly 110. The reverse pressure of the display panel 100 and the optical film assembly 110 can be used to further suppress the split vibration amplitude of the first lamp board 210a to ensure the vibration transmission efficiency.

[0095] In some embodiments, reference Figure 5 The first reinforcement structure 250a is a single component, and the exciter 400 may include a first exciter 400a and a second exciter 400b. The first exciter 400a is located at the center of the first lamp panel 210a, and the first reinforcement structure 250a surrounds the first exciter 400a. The distance between the first reinforcement structure 250a and the first exciter 400a can be adjusted as needed. There may be multiple second exciters 400b, and the multiple second exciters 400b are evenly distributed along the circumference of the first reinforcement structure 250a.

[0096] In this way, on the basis of the drive of the first exciter 400a, by setting up multiple second exciters 400b and arranging the second exciters 400b in the divided vibration area 200a of the first lamp board 210a, the modal state of the first lamp board 210a can be balanced through multi-point driving, so as to achieve the goal of uniform force on each area of the first lamp board 210a.

[0097] In some embodiments, the first reinforcement structure 250a may also have other configurations. For example, the first reinforcement structure 250a may include multiple sub-reinforcement ribs, each of which is interconnected at one end to form a cross-connection and extends radially at the other end. Of course, the number of sub-reinforcement ribs can be appropriately set based on the number of exciters 400. The first exciter 400a can be located at the cross-connection of the multiple sub-reinforcement ribs, and the second exciter 400b can be located on the corresponding sub-reinforcement ribs. Alternatively, the exciter 400 can be located at the cross-connection of the multiple sub-reinforcement ribs, while the exciters 400b are not located on the multiple sub-reinforcement ribs. Alternatively, the exciters 400 can be located at locations of the multiple sub-reinforcement ribs away from the cross-connection, while the exciters 400 are not located at the cross-connection. In this way, uniform force can be applied to all areas of the first light panel 210a, and the overall layout is relatively simple and easy to implement.

[0098] In some embodiments, reference Figure 1 , because after the first lamp panel 210a transmits the vibration to the diffuser panel of the optical film assembly 110, the diffuser panel vibrates. The vibration of the diffuser panel is affected by the modes of each frequency band to produce resonance peaks and valleys, which causes abnormal vibration of the diffuser panel and affects the sound performance. In addition, the mid- and high-frequency segmentation vibrations cause the effective vibration area of the diffuser panel to gradually decrease, affecting the vibration transmission efficiency. Based on this, in this embodiment, the reinforcement structure can also include a second reinforcement structure 250b, and the second reinforcement structure 250b is constructed as a vibration buffer, and the structure of the vibration buffer can be the same as that of the support member 300. The second reinforcement structure 250b is supported between the second lamp panel 210b and the diffuser panel. In this way, the diffuser panel and the second lamp panel 210b of the vibration suppression area 200b are connected through the second reinforcement structure 250b, so that the second lamp panel 210b of the vibration suppression area 200b supports the abnormal vibration position of the diffuser panel, thereby achieving the purpose of suppressing abnormal vibration of the diffuser panel.

[0099] In some embodiments, reference Figure 12 , the light board 210 may include a board body 230;

[0100] In some embodiments, reference Figure 12 , the light board 210 may include a light source 240, and the light source 240 is provided on one side of the board body 230 facing the optical film assembly 110;

[0101] In some embodiments, reference Figure 12 , the plate body 230 includes a base layer 231;

[0102] In some embodiments, reference Figure 12The panel body 230 includes a composite reinforcement layer 234, which forms a reinforcement structure. By replacing the single-material structure of the light panel 210 with a composite structure, both the weight and strength of the light panel 210 can be improved. Improving the strength of the first light panel 210a helps improve the efficiency of mid- and high-frequency vibration transmission, while reducing the weight of the first light panel 210a helps improve the efficiency of vibration transmission across the entire frequency band.

[0103] In some embodiments, the base layer 231 is an aluminum plate, and / or the composite reinforcement layer 234 is a honeycomb plate. In this way, the structural strength of the first light board 210a can be enhanced while reducing the overall weight of the first light board 210a, thereby reducing the split vibration amplitude and improving the full-band vibration transmission efficiency.

[0104] In some embodiments, reference Figure 1 as well as Figures 6-11 The first lamp board 210a is suitable for moving relative to the second lamp board 210b under the push of the exciter 400. In other words, when the exciter 400 drives the first lamp board 210a to vibrate, the first lamp board 210a moves independently of the second lamp board 210b and generates a displacement relative to the second lamp board 210b. The first lamp board 210a and the second lamp board 210b have a certain displacement difference in the thickness direction of the display device 10. In this way, the second lamp board 210b can be prevented from generating resistance to the first lamp board 210a, reducing the resistance that the exciter 400 needs to overcome, reducing vibration loss, and further ensuring the vibration transmission efficiency.

[0105] It should be emphasized that, considering that the exciter 400, the first lamp board 210a and the diffuser are directly driven, there is no need to rely on the viscosity of the gas in the sealed air gap to transmit the driving force. Therefore, in this embodiment, the first lamp board 210a and the second lamp board 210b around it can be a non-sealed structure. In this way, on the one hand, the reaction force of the gas between the first lamp board 210a and the diffuser on the first lamp board 210a can be reduced, so that the pushing resistance is reduced, which is conducive to improving the vibration transmission efficiency. On the other hand, the amount of the second connecting member 221 used for installing the first lamp board 210a and the second lamp board 210b can be reduced, thereby reducing the cost.

[0106] In some embodiments, the first light board 210a is connected to the backboard 500 via a first connector 213, and the first connector 213 is an elastic connector. In this way, the backboard 500 can be used to provide vibration support for the first light board 210a.

[0107] For example Figure 1As shown, the periphery of the first light board 210a can be adhered to the back panel 500 by elastic double-sided tape, and in order to prevent the display panel 100 from being locally too bright, when the first light board 210a is adhered to the back panel 500 by elastic double-sided tape, it is necessary to ensure that the side surface of the first light board 210a facing the display panel 100 after adhesion is flush with the side surface of the second light board 210b facing the display panel 100, so that the image brightness of the display panel 100 is uniform.

[0108] Alternatively, a plurality of guide posts may be provided on the back panel 500. For example, the guide posts may be mortise posts or other structures, and there may be four guide posts. The four corners of the first lamp board 210a are respectively provided with guide holes adapted to the guide posts. Each guide post is passed through the corresponding guide hole. A first connecting member 213 such as a spring is also sleeved on the outer side of the guide post. The two ends of the first connecting member 213 are respectively connected to the back panel 500 and the first lamp board 210a. Moreover, when the first lamp board 210a is in the initial vibration position, the surface of one side of the first lamp board 210a facing the display panel 100 is flush with the surface of the second lamp board 210b facing the display panel 100, thereby making the image brightness of the display panel 100 uniform.

[0109] refer to Figure 11 In other alternative embodiments, since the second light board 210b is fixedly connected to the back panel 500, the first light board 210a and the second light board 210b can also be connected through the first connecting member 213. For example, the periphery of the first light board 210a is adhered to the back panel 500 through elastic double-sided tape, and it is necessary to ensure that the surface of the side of the first light board 210a facing the display panel 100 after adhesion is flush with the surface of the side of the second light board 210b facing the display panel 100, so that the image brightness of the display panel 100 is uniform.

[0110] In addition to the aforementioned elastic connections between the first lamp panel 210a and the back panel 500, and between the first lamp panel 210a and the second lamp panel 210b, in this embodiment, an exciter 400 may be fixedly connected to the back panel 500 to support the first lamp panel 210a. In other words, the first lamp panel 210a and the back panel 500 are not directly connected, but are instead connected to the back panel 500 via the exciter 400. Furthermore, to better support the first lamp panel 210a, in this embodiment, a high-resonance frequency exciter 400 may be positioned at each of the four corners of the first lamp panel 210a. These four high-frequency exciters 400 provide support and vibration stimulation, ensuring uniform vibration across the first lamp panel 210a without deviation. A low-resonance frequency exciter 400 (with a less elastic vibration system) may be positioned in the center of the first lamp panel 210a. This exciter 400 primarily stimulates vibration in the first lamp panel 210a.

[0111] In some embodiments, reference Figure 7-10 The display device 10 may further include a sounding board 212. Specifically, the thickness of the sounding board 212 may be 1 mm to 4 mm, for example, 2 mm. The sounding board 212 is mounted on the side of the first lamp board 210a that faces away from the display panel 100. For example, the sounding board 212 may be a honeycomb board, and the sounding board 212 may be bonded and fixed to the first lamp board 210a by adhesives such as double-sided tape. The exciter body and the actuator 410 are both connected to the sounding board 212. In this way, the actuator 410 can drive the first lamp board 210a to vibrate by driving the sounding board 212 to vibrate. The sounding board 212 is beneficial to enhancing the strength of the first lamp board 210a and improving the vibration transmission efficiency. The first lamp board 210a can also dissipate heat through the sounding board 212.

[0112] In some embodiments, the sounding panel 212 is any one of a honeycomb panel, a sandwich panel, or a carbon fiber panel. The sandwich panel can be any one of a honeycomb sandwich panel, a foam sandwich panel, a wood sandwich panel, and an acrylic panel, which are low-cost and readily available. The honeycomb sandwich panel can be an aluminum honeycomb sandwich panel, an aramid honeycomb sandwich panel, etc. The foam sandwich panel can be a polyvinyl chloride (PVC) foam sandwich panel, a polymethacrylimide (PMI) foam sandwich panel, etc. The wood sandwich panel can be a balsa wood, etc.

[0113] Those skilled in the art are well aware that sound quality can be measured in terms of volume, frequency response range, timbre, and other aspects. Specifically, the sound produced by the sandwich panel has a higher volume and a wider, less undulating audio response than the sound produced by the aluminum panel. In other words, by providing the sound-generating panel 212 , the sound produced by the display device 10 can have better sound quality.

[0114] In some embodiments, reference Figure 8 The sounding plate 212 can be divided into multiple sub-plates 2121, and the multiple sub-plates 2121 are spaced apart from each other. The exciter 400 is connected to the first lamp board 210a through the multiple sub-plates 2121. In this way, the weight of the sounding plate 212 can be further reduced, thereby reducing the mass that the exciter 400 needs to push, reducing energy loss, and improving vibration transmission efficiency.

[0115] In some embodiments, combined Figure 7 、 Figure 9 and Figure 10 The first light board 210a of the vibration area 200a may be at least one, for example, the first light board 210a may be two, three or more. Figure 9 As shown, there are two first lamp panels 210a arranged side by side, and the sounding plate 212 can be provided at the joint of the two first lamp panels 210a, so that the exciter 400 can simultaneously drive the two first lamp panels 210a to vibrate; for example Figure 10 As shown, there are three first light panels 210a arranged side by side, and there can be two sounding panels 212. The two sounding panels 212 are respectively arranged at two splicing positions defined by the three sounding panels 212. The exciter 400 can be connected to the two sounding panels 212 at the same time to achieve simultaneous driving of the three first light panels 210a to vibrate.

[0116] In some embodiments, when there are multiple first lamp boards 210a in the vibration area 200a, the length of each first lamp board 210a can be smaller than the length of the second lamp board 210b. This helps to reduce the mass that the exciter 400 needs to push, reduce energy loss, and improve vibration transmission efficiency.

[0117] In some embodiments of the present application, the actuator 400 may be any one or more of an electromagnetic actuator, a magnetostrictive actuator, and a piezoelectric actuator, and has high applicability. In some embodiments, the actuator 400 may include a magnetic field generating unit (e.g., a magnet) and a vibration coil. The magnetic field generating unit is configured 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.

[0118] Among them, combined Figure 15 The exciter 400 of some embodiments of the present application includes: an actuator 410, a spring 420 and a housing 430. The vibration output end of the actuator 410 is connected to the joint of the lamp board 210; one end of the spring 420 is connected to the actuator 410, and the other end of the spring 420 is connected to the housing 430.

[0119] 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 sealed cavity M, driving the display panel 100 to vibrate and produce sound. In this way, the display device of some embodiments of the present application 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 users with a better audio-visual effect.

[0120] 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 its central axis and perpendicular to the surface of the display device, that is, Figure 9 Middle vertical direction.

[0121] 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.

[0122] 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 .

[0123] In some embodiments of the present application, the central axis of the damper 420 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] Continue to refer to Figure 15 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 has thermal conductivity. 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 improving the stability and tightness of the connection between the damper 420 and the housing 430 and facilitating heat transfer.

[0130] 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.

[0131] Continue to refer to Figure 15 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.

[0132] 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.

[0133] 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.

[0134] 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 exciter 400 to resonate at a lower frequency, vibrating the light board 210 through the connector 211. The exciter 400 housing has no fixed support but vibrates with the vibration of the driven light board 210. This is the biggest difference between the OLED screen exciter housing fixed to the bracket excitation method.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] Continue to refer to Figure 15 Ventilation holes are provided at the portion of the magnetic member 451 that contacts the damper 420 to improve the heat dissipation efficiency of the magnetic member 451 and the amount of heat dissipated by the actuator 410 through the damper 420. The ventilation holes may be circular holes, and the present embodiment does not limit the shape, number, or arrangement of the ventilation holes.

[0139] In some possible embodiments, the portion of the housing 430 that contacts the magnetic conductive member 451 is provided with ventilation holes. The ventilation holes can be opposite the ventilation holes to further improve heat dissipation efficiency. The ventilation holes can be circular holes. The embodiment of the application does not limit the shape, number, or arrangement of the ventilation holes.

[0140] 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.

[0141] 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.

[0142] The elastic force of the elastic pad 460 is parallel to the thickness of the display device 10, allowing the housing 430 and the back panel 500 to have a variable relative position. In other words, during the vibration of the actuator 400, the housing 430 can reciprocate relative to the back panel 500. In this case, the actuator 400 also drives the light panel 210 to vibrate in a manner similar to inertial drive, thus preventing the housing 430 and the back panel 500 from being fixed relative to each other and affecting the frequency response of the display device 10.

[0143] In some embodiments, the optical film assembly 110 may further include a fluorescent film and a brightness enhancement film. A diffuser plate is positioned in front of the light source 240 to evenly mix the light from the multiple light sources 240, converting the point light sources 240 into a surface light source 240. The fluorescent film converts the light emitted by the light source 240 into white light, thus eliminating the need to restrict the color of the light emitted by the light source 240, allowing the light source 240 to emit blue or purple light. The brightness enhancement film is used to increase the brightness of the light.

[0144] In some embodiments, the display panel 100 (i.e., the aforementioned liquid crystal screen) and the optical film assembly 110 may be pressed together to avoid air gaps between the display panel 100, the brightness enhancement film, the fluorescent film, and the diffuser plate through which air can circulate with the outside air.

[0145] In some embodiments, the display panel 100 and the optical film assembly 110 may be bonded together, for example, by photosensitive adhesive (UV adhesive), foam, double-sided tape, etc. In other words, the display panel 100 and the optical film assembly 110 may be bonded together as a whole, and in this case, the cavity M is formed between the optical film assembly 110 and the display panel 100.

[0146] In some embodiments, the display device 10 further includes a rear cover (not shown), which is located on the side of the back plate 500 facing away from the display panel 100. That is, the rear cover is disposed on the rear side of the back plate 500. The controller, electrical connections, etc. of the display device 10 can be disposed between the back plate 500 and the rear cover to simplify the appearance of the display device 10. The rear cover can be made of plastic, metal, etc.

[0147] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0148] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", 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 application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0149] 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: include: a display panel configured to display image information; A backlight assembly, wherein the backlight assembly includes a vibration area in a plane direction thereof, and the backlight assembly includes: a light board, the light board comprising a first light board and a second light board, the first light board being disposed in the vibration region, the second light board being disposed outside the vibration region, the first light board being configured to vibrate relative to the second light board; an optical film assembly, wherein the light panel is located on a light incident side of the optical film assembly, the display panel is located on a light emitting side of the optical film assembly, and a cavity is formed between the optical film assembly and the display panel; a support and transfer assembly, wherein the support and transfer assembly is supported between the first light panel and the optical film assembly; an exciter connected to the first light board to transmit vibration to the display panel through the first light board, the optical film assembly, and the cavity, thereby driving the display panel to vibrate and generate sound; At least one of the first light panel and the optical film assembly is provided with a reinforcement structure.

2. The display device according to claim 1, wherein The optical film assembly includes a diffuser plate, and the support transmission assembly includes a plurality of support members. The plurality of support members are arranged at intervals along the first light board, one end of the support member is connected to the first light board, and the other end is connected to the diffusion plate.

3. The display device according to claim 2, wherein The reinforcement structure includes a first reinforcement structure, which is provided on a side of the first lamp panel facing away from the diffusion plate. The first reinforcement structure is ring-shaped, and there is at least one first reinforcement structure.

4. The display device according to claim 3, wherein There are multiple first reinforcement structures, and the multiple first reinforcement structures are spaced apart inward and outward along the radial direction of the first reinforcement structure; The support members are divided into a plurality of transmission groups corresponding to the first reinforcement structure, and the several support members in each transmission group are distributed at intervals along the circumference of the corresponding first reinforcement structure and are arranged relative to the corresponding first reinforcement structure along the thickness direction of the lamp board.

5. The display device according to claim 3, wherein The first reinforcing structure is one, the exciter includes a first exciter and a second exciter, the first exciter is arranged at the center of the first lamp panel, and the first reinforcing structure surrounds the first exciter. There are a plurality of second exciters, and the plurality of second exciters are evenly distributed on the first reinforcement structure along a circumferential direction of the first reinforcement structure.

6. The display device according to claim 2, wherein: The reinforcement structure further includes a second reinforcement structure including a vibration buffer supported between the second lamp panel and the diffusion panel.

7. The display device according to any one of claims 1 to 6, characterized in that: The light board includes a board body and a light source. The light source is arranged on a side of the board body facing the optical film assembly. The board body includes a base layer and a composite reinforcement layer. The composite reinforcement layer constitutes the reinforcement structure.

8. The display device according to any one of claims 1 to 6, characterized in that: Also includes: A back plate is provided on a side of the light plate facing away from the display panel, and the second light plate is fixedly connected to the back plate.

9. The display device according to claim 8, wherein: The first lamp board and the second lamp board are elastically connected so that the first lamp board moves relative to the second lamp board under the push of the exciter.

10. The display device according to claim 9, wherein The first light board is connected to the back board via a first connector; or the exciter is fixedly connected to the back board to support the first light board.

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