Display device

Abstract

The embodiment of the invention relates to the technical field of display, in particular to display equipment. The display device comprises a display panel, a backlight assembly, a supporting piece, an exciter and a back plate, the backlight assembly comprises a first lamp panel and a second lamp panel, the first lamp panel is connected with the vibration output end of the exciter, the supporting piece is arranged between the first lamp panel and the display panel, and the second lamp panel is connected with the vibration output end of the exciter. The exciter excites the display panel to vibrate through the first lamp panel and the supporting piece, the mass driven by the exciter is reduced, the loss of vibration energy is reduced, and the vibration transmission efficiency is guaranteed. The second lamp panel is connected with the back plate, and the second lamp panel and the first lamp panel are arranged at an interval in the vibration direction, so that the vibratable first lamp panel and the peripheral structure thereof are in an open design, the air reaction force of the first lamp panel is reduced, the pushing resistance is reduced, and the vibration transmission efficiency is improved.

Description

Technical Field

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

[0002] The display device utilizes "flat panel sound technology" by placing an exciter behind the display panel. Under the action of the exciter, the display panel vibrates and emits sound waves, which produce sound. In other words, the display panel of the display device can be used for both display and sound generation instead of speakers.

[0003] In related technologies, the exciter directly drives the display panel to produce sound. The display panel has a large overall area and a large mass. The display panel produces the largest amplitude at the exciter position. As it moves away from the exciter position, the vibration energy decays rapidly and the amplitude gradually decreases, resulting in poor acoustic effects. Summary of the Invention

[0004] Some embodiments of the present application provide a display device that can improve vibration transmission efficiency and thereby enhance acoustic effects.

[0005] Some embodiments of the present application provide a display device, comprising:

[0006] a display panel configured to display image information;

[0007] A backlight assembly is located on one side of the display panel; the backlight assembly includes:

[0008] First light board,

[0009] a second light board, wherein the second light board and the first light board are arranged side by side on the same plane;

[0010] a support member, interference-interferencely disposed between the first light board and the display panel;

[0011] an exciter, wherein a vibration output end of the exciter is connected to the first light board, and the exciter is configured to drive the first light board to vibrate, and to ensure that the first light board and the second light board are spaced apart along the vibration direction;

[0012] A back plate is supported on a side of the second light board facing away from the display panel.

[0013] In the display device of some embodiments of the present application, the backlight assembly includes a first lamp board and a second lamp board, wherein the first lamp board is connected to the vibration output end of the exciter, and a support member is arranged between the first lamp board and the display panel, and the exciter excites the display panel to vibrate through the first lamp board and the support member, thereby reducing the mass driven by the exciter, reducing the loss of vibration energy, and ensuring the vibration transmission efficiency; the second lamp board is connected to the back panel, and the second lamp board and the first lamp board are spaced apart along the vibration direction, so that the vibrating first lamp board and its surrounding structure are of open design, thereby reducing the air reaction force of the first lamp board, reducing the pushing resistance, and helping to improve the vibration transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation methods of some embodiments of the present application or related technologies, the following is a brief introduction to the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0015] Figure 1 A schematic diagram of an operation scenario between a display device and a control device in some embodiments of the present application;

[0016] Figure 2 A block diagram of a display device for some embodiments of the present application;

[0017] Figure 3 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0018] Figure 4 Schematic diagram of different states of the first light board and the second light board in some embodiments of the present application;

[0019] Figure 5 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0020] Figure 6 A schematic diagram of the connection between the first light board and the backboard in some embodiments of the present application;

[0021] Figure 7 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0022] Figure 8 Schematic diagram of the position of the first light board and the back board in some implementations of this application Figure 1 ;

[0023] Figure 9 Schematic diagram of the position of the first light board and the back board in some implementations of this application Figure 2 ;

[0024] Figure 10Schematic diagram of the position of the first light board and the back board in some implementations of this application Figure 3 ;

[0025] Figure 11 Schematic diagram of the position of the first light board and the back board in some implementations of this application Figure 4 ;

[0026] Figure 12 Schematic diagram of the arrangement of the exciter for some implementations of this application Figure 1 ;

[0027] Figure 13 Schematic diagram of the arrangement of the exciter for some implementations of this application Figure 2 ;

[0028] Figure 14 A schematic diagram of the structure of an actuator for some implementations of this application;

[0029] Figure 15 Schematic diagram of the structure of some implemented springs in this application Figure 1 ;

[0030] Figure 16 Schematic diagram of the structure of some implemented springs in this application Figure 2 ;

[0031] Figure 17 Schematic diagram of the structure of some implemented springs in this application Figure 3 ;

[0032] Figure 18 Schematic diagram of the structure of some implemented springs in this application Figure 4 ;

[0033] Figure 19 Schematic diagram of the structure of some implemented springs in this application Figure 5 ;

[0034] Figure 20 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0035] Figure 21 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0036] Figure 22 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0037] Figure 23 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0038] Figure 24 Schematic diagram of the arrangement of backlight assemblies in some implementations of the present application.

[0039] Description of reference numerals:

[0040] 10: Display device; 20: Smart device; 30: Server;

[0041] 100: display panel; 110: optical film assembly; 111: brightness enhancement film; 112: fluorescent film; 113: diffusion film; 120: display film layer;

[0042] 200: backlight assembly; 210: first light board; 211: connecting member; 2111: connecting body; 2112: elastic portion; 212: sound-generating plate; 2121: weight-reducing structure; 213: first connecting member; 220: second light board; 221: second connecting member; 230: board body; 240: light source; 250: reinforcement structure;

[0043] 300: support member; 301: buffer portion; 302: rigid portion;

[0044] 400: actuator; 401: actuator body; 410: actuator; 411: connection structure; 420: damper; 4201: body; 4202: first connection part; 4203: second connection part; 421: fiber layer; 422: heat-conducting layer; 423: heat-conducting film; 4231: through hole; 430: housing; 440: pressure ring; 450: magnetic component; 451: magnetic conductive member; 452: magnetic member; 460: elastic pad; 470: damping block; 480: fixing pin;

[0045] 500: back panel; 501: back panel body; 502: first side panel; 503: opening; 504: convex hull;

[0046] 610: first sealing structure; 620: second sealing structure;

[0047] 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;

[0048] M: cavity; N: magnetic air gap. DETAILED DESCRIPTION

[0049] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0050] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0051] In addition, the terms "comprises" and "comprising" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0052] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0053] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0054] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and 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.

[0055] Conventional display devices, such as televisions, are equipped with speakers to output sound. These speakers are typically mounted on the bottom or back of the display device, resulting in a separation between the sound and image positions, a poor viewing experience, and the inability to provide a unified audiovisual experience. In related technologies, an actuator is provided on the display device to enable the display panel to generate sound on the screen, allowing the display panel to have both display and sound functions, achieving a unified audiovisual experience.

[0056] In related technologies, an exciter directly drives the display panel to produce sound. For example, in OLED displays, the display panel has a large overall area and is heavy. The display panel produces the highest amplitude at the exciter location. As it moves away from the exciter location, the vibration energy rapidly decays, the amplitude gradually decreases, and vibration efficiency is low, resulting in poor acoustic effects. Increasing the amplitude to increase vibration energy presents a conflict between the display panel's amplitude and its mounting reliability and display functionality, limiting the display panel's sound generation to mid- and high-frequency frequencies.

[0057] In related technologies, the exciter drives the display panel to make sound through the light board. For example, in a liquid crystal display device, since multiple light boards are assembled to form a whole, there is also the problem of large overall area and mass, which leads to rapid attenuation of vibration energy.

[0058] In view of this, some embodiments of the present application divide the lamp boards into two categories, wherein the first type of lamp board is connected to the vibration output end of the exciter, and a support is arranged between the first type of lamp board and the display panel. The exciter excites the display panel to vibrate through the first type of lamp board and the support, thereby reducing the mass driven by the exciter, reducing the loss of vibration energy, and ensuring the vibration transmission efficiency; the second type of lamp board is connected to the back panel, and the second type of lamp board and the first type of lamp board are spaced apart along the vibration direction, so that the vibrating first type of lamp board and its surrounding structure are of open design, reducing the air reaction force of the first type of lamp board, reducing the pushing resistance, and helping to improve the vibration transmission efficiency.

[0059] 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 in the gas layer 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.

[0060] The following will be combined with the accompanying drawings of some embodiments of the present application to clearly and completely describe the technical solutions of some embodiments of the present application. Obviously, the embodiments described are only some embodiments of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of this application.

[0061] The display device provided in the embodiments of the present application may have various implementation forms, for example, it may be a television, a smart TV, a monitor, an electronic bulletin board, an electronic table, etc. Figure 1 and Figure 2 This is a specific implementation of the display device of the present application.

[0062] Figure 1 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 1 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.

[0063] Figure 2 A schematic diagram of the structure of a display device in an example is shown in FIG. Figure 2 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 multiple wireless or wired broadcast television signals.

[0064] 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.

[0065] In some embodiments, the display device 10 includes an audio output interface 907;

[0066] In some embodiments, the display device 10 includes a memory 908;

[0067] In some embodiments, the display device 10 includes a power supply 909;

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.).

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] Some embodiments of the present application provide a display device 10, which may be a liquid crystal display device. 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 and right sides 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.

[0080] Reference Figure 3The display device 10 of some embodiments of the present application includes a display panel 100, which is configured to display image information such as text and images, and the display panel 100 can also vibrate and make sounds under the excitation of the exciter 400.

[0081] In some embodiments, the display device 10 further includes a backlight assembly 200 . The backlight assembly 200 is located on one side of the display panel 100 and is used to provide backlight for the display panel 100 .

[0082] In some embodiments, the display device 10 further includes an exciter 400 . The exciter 400 is disposed on a side of the backlight assembly 200 facing away from the display panel 100 . The exciter 400 provides a vibration force for the vibration and sound generation of the display panel 100 .

[0083] In some embodiments, the display device 10 further includes a back plate 500, which is disposed on a side of the backlight assembly 200 facing away from the display panel 100. That is, the back plate 500 is disposed on the rear side of the backlight assembly 200 and is configured to support the backlight assembly 200 and the display panel 100. The back plate 500 can be made of aluminum alloy, steel, etc. to provide effective support.

[0084] In some embodiments of the present application, the backlight assembly 200 is located on one side of the display panel 100. The backlight assembly 200 includes a light board, which includes a board body 230 and a light source 240 disposed on the board body 230. The light source 240 is located on the side of the board body 230 facing the display panel 100. The board body 230 can be an aluminum plate, a printed circuit board (PCB), etc. The light source 240 can be a light-emitting diode (LED), a sub-millimeter light-emitting diode (Mini-Light-Emitting Diode, Mini LED), or a micro-light-emitting diode (MicroLED). There can be multiple light sources 240, which are spaced apart on the board body 230.

[0085] In some embodiments, considering factors such as the size of the display device 10 and the manufacturing process of the light board, the backlight assembly 200 includes a plurality of light boards, and the plurality of light boards are arranged side by side on the same plane.

[0086] In some embodiments, the vibration output end of the exciter 400 is connected to some lamp boards and drives the lamp boards connected thereto to vibrate, and creates a gap between the lamp boards connected to the exciter 400 and the lamp boards not connected to the exciter 400 along the vibration direction.

[0087] In some embodiments, multiple lamp boards are divided into a first lamp board 210 and a second lamp board 220, wherein the first lamp board 210 is connected to the vibration output end of the exciter 400, so that the first lamp board 210 can vibrate under the excitation of the exciter 400; the second lamp board 220 has no connection relationship with the exciter 400, and the second lamp board 220 is connected to the back panel 500, and the back panel 500 is used to support the second lamp board 220.

[0088] Combine Figure 4 As shown in Figure a, in the initial state, that is, when the exciter 400 is in a non-vibrating state, the first lamp board 210 and the second lamp board 220 are arranged side by side on the same plane to provide backlight for the display panel 100 stably and reliably, thereby ensuring the display effect of the display panel 100.

[0089] Combine Figure 4 In Figure b, in the vibrating state (i.e., when the exciter 400 is vibrating), the exciter 400 drives the first lamp board 210 to vibrate, creating a gap ΔL between the first lamp board 210 and the second lamp board 220 along the vibration direction (direction of the arrow in the figure). This arrangement allows the exciter 400 to excite only the first lamp board 210, rather than all lamp boards. This reduces the mass required to be driven by the exciter 400, lowering vibration energy loss and improving vibration efficiency.

[0090] In addition, the first lamp board 210 and the second lamp board 220 have a gap △L along the vibration direction (the direction of the arrow in the drawing), so that the vibrating first lamp board 210 and its surrounding structure are open designs, reducing the air reaction force of the first lamp board 210, reducing the pushing resistance, and helping to further improve the vibration transmission efficiency.

[0091] Due to the presence of a gap ΔL between the first lamp board 210 and the second lamp board 220, the gap between the backlight assembly 200 and the display panel 100 is not sealed, and the effect of transmitting vibrations by utilizing the viscosity of air in this gap is weak. To ensure that the vibration force is transmitted to the display panel 100, the display device 10 of some embodiments of the present application is provided with a support member 300. The support member 300 is supported between the lamp board connected to the actuator 400 and the display panel 100.

[0092] In some embodiments, the support member 300 is supported between the first light board 210 and the display panel 100. The support member 300 can be made of a high-rebound material or a combination of materials with a rebound function, such as silicone.

[0093] In some embodiments, the support member 300 is interference-interferencely disposed between the first light board 210 and the display panel 100 .

[0094] In this way, the vibration transmission between the exciter 400, the first lamp board 210 and the display panel 100 is directly driven, which is conducive to ensuring the efficiency of vibration transmission; and the support member 300 is conducive to ensuring the stability of the distance between the display panel 100 and the first lamp board 210, avoiding abnormal collision noise between the display panel 100 and the first lamp board 210.

[0095] It should be noted that, in some embodiments of the present application, the first light board 210 and the second light board 220 have the same structure, but are connected in different ways, which facilitates processing and assembly and helps reduce costs.

[0096] OLED displays, due to their inherent flexibility, can elastically deform and produce sound when stimulated by an actuator. Conventional LCD devices, on the other hand, have support components that support the LCD screen, but because the LCD screen is fixed, they do not vibrate or produce sound, and the support components simply serve as rigid support. However, in some embodiments of the present application, the support member 300 not only supports the display panel 100 but also transmits vibrations from the backlight assembly 200 to the display panel 100, thus buffering sound waves from reaching the display panel 100.

[0097] In some embodiments of the present application, the exciter 400 and the first lamp board 210 form a vibrating body. The exciter 400 is the excitation portion of the vibrating body, configured to provide driving force; the first lamp board 210 is the vibration transmission portion of the vibrating body, configured to transmit the vibration force of the exciter 400 to the display panel 100 with low loss. The first lamp board 210 is lightweight and has a high Young's modulus. It can also reduce mid- and high-frequency split vibrations, thereby improving vibration transmission efficiency and reducing vibration transmission losses.

[0098] Combine Figure 5 In some embodiments of the present application, the second light board 220 is fixedly connected to the back panel 500 , and the back panel 500 is used to support and strengthen the second light board 220 .

[0099] In some embodiments, the second light board 220 is rigidly connected to the back panel 500. For example, the second light board 220 is rigidly connected to the back panel 500 via a second connecting member 221. This not only ensures the stability and reliability of the connection between the second light board 220 and the back panel 500, but also allows the second light board 220 and the back panel 500 to form a rigid surface structure together. The rigid surface structure does not participate in vibration and sound generation, but exists as a basic surface to reinforce the display panel.

[0100] Exemplarily, the second light board 220 and the back panel 500 are fixedly connected via a mechanical structure, for example, the second light board 220 and the back panel 500 are fixedly connected via screws; exemplary, the second light board 220 and the back panel 500 are connected via hard double-sided tape or glue.

[0101] When multiple second lamp boards 220 are provided, the multiple second lamp boards 220 are respectively connected to the back panel 500 through the second connecting members 221, which is conducive to ensuring the flatness of the multiple second lamp boards 220 and the convenience of assembly.

[0102] Although the second lamp board 220 does not participate in the vibration and sound generation, the gap between the display panel 100 and the second lamp board 220 fluctuates when the display panel 100 vibrates and generates sound. To prevent the display panel 100 and the light source of the second lamp board 220 from colliding and causing abnormal noise and wear, some embodiments of the present application may further include a support member 300 interferingly disposed between the second lamp board 220 and the display panel 100.

[0103] In some embodiments of the present application, the first light board 210 and the backboard 500 may not be connected, such as Figure 3 Alternatively, the first light board 210 is connected to the back panel 500, as shown; Figure 5 and Figure 6 shown.

[0104] Specific, combined Figure 3 The first lamp board 210 is spaced apart from the backboard 500 , and the exciter 400 is configured to support the first lamp board 210 . This arrangement can reduce the assembly process of the first lamp board 210 .

[0105] Combine Figure 5 The first light panel 210 and the back panel 500 are connected via a connecting member 211, creating an elastic connection between the first light panel 210 and the back panel 500. The connecting member 211 can be made of an elastic material. This arrangement not only facilitates the installation of the first light panel 210, ensuring that it is initially aligned with the second light panel 220, but also ensures the structural stability and reliability of the first light panel 210. The elastic connection between the first light panel 210 and the back panel 500 also prevents vibration reaction forces from being transmitted to the back panel 500.

[0106] Exemplarily, the two ends of the connecting member 211 are respectively bonded to the first light board 210 and the backboard 500. For example, the connecting member 211 is an elastic double-sided adhesive tape. This arrangement makes the connection between the first light board 210 and the backboard 500 simple, reliable, and elastic.

[0107] For example, combined Figure 6The connecting component 211 includes two connecting bodies 2111 and an elastic portion 2112. The two connecting bodies 2111 are fixed to the back panel 500 and the first light board 210, respectively. Exemplarily, the connecting body 2111 is a column, and mounting holes are respectively provided on the back panel 500 and the first light board 210, and the connecting body 2111 is riveted into the mounting holes; Exemplarily, a threaded hole is provided on the back panel 500, and the connecting body 2111 is threadedly connected to the threaded hole; Exemplarily, the connecting body 2111 is bonded to the first light board 210. The connection method of the two connecting bodies 2111 can be the same or different, and some embodiments of the present application are not limited to this. There is a gap between the two connecting bodies 2111. It should be noted that when the gap between the first light board 210 and the back panel 500 is the smallest, there is still a gap between the two connecting bodies 2111 to avoid collision between the two connecting bodies 2111 and generating abnormal noise.

[0108] The elastic portion 2112 is connected between the two connecting bodies 2111. The elastic portion 2112 is an elastic component, such as a spring; the ends of the spring can be fixed to the two connecting bodies 2111, or the ends of the spring can be sleeved on the outside of the two connecting bodies 2111. In this example, the connecting component 211, through the two connecting bodies 2111 and the elastic portion 2112, achieves an elastic connection between the first light panel 210 and the back panel 500, providing a stable and reliable connection.

[0109] Combine Figure 7 and Figure 8 In some embodiments of the present application, the backlight assembly 200 further includes a sound plate 212. The thickness of the sound plate 212 can be 1 mm to 4 mm, for example, 1 mm to 2 mm, 2 mm to 3 mm, 3 mm to 4 mm; for example, the thickness can be 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 2.2 mm, 2.5 mm, 2.7 mm, 3 mm, 3.3 mm, 3.5 mm,

[0110] 3.8mm, 3.9mm, etc. The sounding board 212 is fixed to the side of the first light board 210 facing away from the display panel 100. For example, the sounding board 212 is bonded and fixed to the first light board 210 by an adhesive such as double-sided tape. At this time, the vibration output end of the exciter 400 is connected to the sounding board 212.

[0111] In some embodiments, the light board 210 can also dissipate heat through the sound board 212. For example, the sound board 212 includes a metal layer, which transfers the heat of the light board 210 through contact and dissipates the heat, thereby playing a role in dissipating heat for the light board 210.

[0112] The sounding panel 212 may include a sandwich panel or a carbon fiber panel. The sandwich panel may be any of honeycomb sandwich panels, foam sandwich panels, wood sandwich panels, and acrylic panels, which are low-cost and readily available. Honeycomb sandwich panels may include aluminum honeycomb sandwich panels, aramid honeycomb sandwich panels, etc., foam sandwich panels may include polyvinyl chloride (PVC) foam sandwich panels, polymethacrylimide (PMI) foam sandwich panels, etc., and wood sandwich panels may include balsa wood or other balsa wood.

[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 can have better sound quality.

[0114] In some embodiments, the sounding plate 212 includes a honeycomb panel and an aluminum substrate, which reduces the mass of the sounding plate 212 while ensuring the structural strength of the sounding plate 212, thereby reducing the mass driven by the exciter 400 and reducing the loss of vibration energy.

[0115] In some embodiments, the aluminum substrate on the side of the sounding board 212 facing the exciter 400 can be replaced with a fiberglass covering to prevent the heat of the light board from being transferred to the exciter 400 through the aluminum substrate, thereby preventing the operating temperature of the exciter 400 from increasing.

[0116] The damping of the sounding board 212 is greater than the damping of the board body of the first lamp board 210 . Compared with the board body in the related art, the density and mass of the sounding board 212 are smaller.

[0117] like Figure 8 As shown, when the exciter 400 drives the first lamp board 210 and the sounding board 212 to vibrate, the sounding board 212 and the second lamp board 220 have a gap ΔL along the vibration direction.

[0118] The sounding board 212 may be the same size as the first light board 210; or, the size of the sounding board 212 may be smaller than the size of the first light board 210 to reduce the mass driven by the exciter 400. Figure 9 As shown, in order to reduce the mass of the sounding plate 212, a weight-reducing structure 2121 may be provided on the sounding plate 212. The weight-reducing structure 2121 may be a hole or a groove, etc. Some embodiments of the present application do not limit the number and arrangement of the holes or grooves.

[0119] Some embodiments of the present application can reinforce the structure of the first lamp panel 210 by providing a sounding plate 212; the sounding plate 212 has a large damping and a small mass and density, which can increase the equivalent damping of the first lamp panel 210, reduce the equivalent density of the first lamp panel 210, increase the bending modulus of the first lamp panel 210, increase the number of modal resonance frequencies, improve the frequency response transmitted to the display panel 100, expand the frequency range of the sound emitted by the display panel 100, and avoid obvious peaks and valleys and distortion in the audio response of the display panel 100 that affect the listening experience.

[0120] Combine Figure 5 In some embodiments, the back panel 500 includes a back panel body 501 and a first side panel 502. The back panel body 501 is configured to support the light panel and the display panel 100. An opening 503 is provided on the back panel body 501, and the exciter 400 is connected to the first light panel 210 through the opening 503. With this arrangement, the back panel 500 does not need to be provided with a bulge, and only needs to be provided with the opening 503, which is conducive to simplifying the structure of the back panel 500, facilitating processing, and reducing costs. In addition, the back panel 500 is not provided at the position corresponding to the exciter 400, which is conducive to reducing the thickness of the display device. The first side panel 502 extends along the edge of the back panel body 501 and protrudes from the back panel body 501 toward one side of the display panel 100, that is, the first side panel 502 protrudes from the front side of the back panel body 501. In this way, the first side panel 502 is arranged around the outer side of the light panel and the display panel 100 in the circumferential direction.

[0121] Combine Figure 7 In some other embodiments, a convex bump 504 is provided on the back panel body 501 at a position corresponding to the first lamp panel 210 , and the convex bump 504 protrudes away from the first lamp panel 210 to accommodate the sound panel 212 .

[0122] like Figure 10 As shown, a plurality of first lamp panels 210 are provided, and the plurality of first lamp panels 210 are spliced together through a first connecting member 213 ; the vibration output end of the exciter 400 is connected to the first connecting member 213 .

[0123] The area of the first connecting member 213 can be the same as the total area of the plurality of first light panels 210, so that the first light panels 210 can be stably and reliably supported. Figure 11 As shown, the first connecting member 213 can be set at the joint of two adjacent first lamp panels 210. This arrangement can reduce the mass driven by the exciter 400 while splicing multiple first lamp panels 210, thereby reducing the loss of vibration.

[0124] In some embodiments, the first connecting member 213 may be a rigid member. For example, the first connecting member 213 is a sound-generating plate, which can reinforce the first light panels 210 while enabling the splicing of multiple first light panels 210 .

[0125] In other embodiments, the first connecting member 213 may be an adhesive member, such as double-sided tape, foam, etc., so that the splicing of multiple first light panels 210 is simple and convenient.

[0126] Some embodiments of the present application provide multiple first lamp boards 210 to increase the vibration area, thereby facilitating the transmission of vibrations to the entire display panel 100 and improving the uniformity of vibration transmission to the display panel 100. The multiple first lamp boards 210 are connected by first connectors 213, facilitating assembly of the multiple first lamp boards 210 and achieving coplanar arrangement with the second lamp boards 220; the exciter 400 excites the first lamp boards 210 via the first connectors 213.

[0127] Combine Figure 12 and Figure 13 The plurality of exciters 400 can increase the vibration force. In particular, when the first light board 210 is not connected to the backboard 500, the plurality of exciters 400 can support the first light board 210 more stably.

[0128] like Figure 12 As shown, in some implementations, one driver 400 is provided at the center of the first light board 210 , and a plurality of drivers 400 are arranged at intervals around the circumference of the driver 400 .

[0129] like Figure 13 As shown, a plurality of actuators 400 are disposed at the edge of the first light board 210 , and at least one actuator 400 is disposed at the center of the first light board 210 .

[0130] Among them, the exciter 400 located at the center of the first light board 210 can be designed to have a low resonance frequency, and its vibration system has less elasticity; multiple exciters 400 arranged circumferentially can be designed to have a high resonance frequency to improve the acoustic effect of the display device.

[0131] Some embodiments of the present application provide a plurality of exciters 400, which can not only stably and reliably support the first lamp board 210, but also enable the first lamp board 210 to vibrate along the front-to-back direction of the display device without deflection.

[0132] The actuator 400 in some embodiments of the present application is an electric actuator, such as an electromagnetic actuator, a magnetostrictive actuator, a piezoelectric actuator, etc. Figure 14 The exciter 400 of some embodiments of the present application includes: an actuator 410, a spring 420 and an exciter body 401, the vibration output end of the actuator 410 is connected to the first 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 exciter body 401.

[0133] When the exciter 400 is activated, the actuator 410 vibrates and drives the first light panel 210 to vibrate. The vibration force is transmitted to the display panel 100 via the support member 300, 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, with the sound image position approximately coinciding with the center position of the screen, achieving a unified audio and video experience and providing a better audio-visual effect for the user.

[0134] In some embodiments, the central axis of the actuator 400 is perpendicular to the first 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. Figure 14 Middle vertical direction.

[0135] The vibration output end of the actuator 410 forms a connection structure 411 to increase the connection area between the actuator 410 and the first lamp board 210 , thereby preventing the actuator 410 and the first lamp board 210 from being separated from each other.

[0136] 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 .

[0137] 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 and first and second connecting portions 4202 and 4203 disposed at either end of the main body 4201. The main body 4201 is arranged in a plane parallel to the display panel. It is annular and radially wavy, imparting elasticity to the damper 4200. 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 actuator body 401.

[0138] In some embodiments, the first connection portion 4202 is a sheet-shaped connection portion, which can increase the connection area between the first connection portion 4202 and the actuator 410, which not only ensures the stability of the connection, but also facilitates heat transfer and heat dissipation.

[0139] In some embodiments, the second connection portion 4203 is a sheet-shaped connection portion, which can increase the connection area between the second connection portion 4203 and the actuator body 401, which not only helps to improve the stability of the connection, but also facilitates heat transfer and heat dissipation.

[0140] In some embodiments of the present application, actuator 400 employs dampers 420 to transfer heat generated by the vibration of actuator 410 to actuator body 401 for dissipation. This allows heat generated by actuator 410 to be dissipated not only through air but also through dampers 420, thereby lowering the temperature of actuator 410 and minimizing the impact of local temperature on image display quality. Furthermore, the provision of first connection portion 4202 increases the connection area with actuator 410, while the provision of second connection portion 4203 increases the connection area with actuator body 401, both improving connection stability and heat dissipation.

[0141] 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.

[0142] In some embodiments, the damper 420 is bonded to the actuator 410 and the actuator body 401 respectively. For example, the damper 420 is bonded to the actuator 410 and the actuator body 401 respectively by glue, and the connection method is simple and stable.

[0143] Reference Figure 14 and Figure 15 In some embodiments of the present application, the damper 420 includes a heat-conducting layer 422. This facilitates heat transfer, allowing heat generated by the actuator 410 to be transferred to the actuator body 401 for dissipation, thereby reducing the impact of heat from the actuator 410 on image display quality. The heat-conducting layer 422 has a high thermal conductivity and can be made of metal, graphite, or other materials.

[0144] Continue to refer to Figure 14 and Figure 15 In some possible implementations, the damper 420 further includes a fiber layer 421, which is stacked with a heat conducting layer 422. The fiber layer 421 includes but is not limited to mesh, glass fiber mesh, etc.

[0145] A possible manufacturing method for the elastic wave 420 includes: firstly, using flake graphite as the raw material, performing an oxidation and pulping process to form a graphene oxide slurry; then coating it as a base film, and then performing a sintering, reduction, and calendaring process to form a graphene membrane; secondly, 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 the fiber membrane, and embossing them into a wavy shape. After curing, the elastic wave 420 with high thermal conductivity is formed.

[0146] 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. The damper 420 is not only elastic but also has high thermal conductivity, which facilitates the transfer of heat generated by the actuator 410 to the actuator body 401 while reducing the amount of heat generated by the actuator 410 that is transferred to the display panel.

[0147] 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 401 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.

[0148] In some embodiments, reference Figure 15 and Figure 16 , one of the fiber layer 421 and the heat conducting layer 422 is multiple, and the fiber layer 421 is adjacent to the heat conducting layer 422. In this way, the fiber layer 421 and the heat conducting layer 422 are alternately stacked.

[0149] In some embodiments, reference Figure 16 The fiber layer 421 is provided with two layers, and the heat conducting layer 422 is located between the two fiber layers 421 .

[0150] In other embodiments, referring to Figure 15 The heat conducting layer 422 is provided with two layers, and the fiber layer 421 is located between the two heat conducting layers 422 .

[0151] 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.

[0152] In some embodiments of the present application, the damper 420 is provided with fiber layers 421 and heat-conducting layers 422 that are alternately stacked to improve the structural strength of the damper 420 and the thermal conductivity of the damper 420 .

[0153] Combine Figure 14In some embodiments, the thermally conductive layer 422 contacts the actuator body 401, 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 actuator body 401. 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 actuator body 401 is provided with a notch, allowing the thermally conductive layer 422 to be arranged on the surface of the damper 420 and, in turn, to contact the actuator body 401. 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, to contact the actuator body 401.

[0154] Combine Figures 17 to 19 In some possible embodiments of the present application, the thermally conductive layer 422 is a thermally conductive film 423, which is provided with a plurality of through-holes 4231. The thermally conductive film 423 is a membrane independent of the fiber layer 421, and is formed with a plurality of through-holes 4231. The through-holes 4231 provided on the thermally conductive film 423 can be circular holes, elliptical holes, polygonal holes, irregular holes, etc.; the plurality of through-holes 4231 can be arranged in a matrix on the thermally conductive film 423, such as a rectangular matrix or a circular matrix. Some embodiments of the present application do not limit the number, shape, and arrangement of the through-holes 4231.

[0155] 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.

[0156] The fiber layer 421 and the heat-conducting film 423 may both be ring-shaped, and after being embossed and cooled and solidified, the damper 420 is formed.

[0157] In some embodiments of the present application, the damper 420 is provided with a fiber layer 421 as a skeleton, and a thermally conductive film 423 is provided with a plurality of through 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.

[0158] In some examples, reference Figure 19 The heat-conducting film 423 is provided with two layers, and the fiber layer 421 is provided between the two layers of heat-conducting film 423 .

[0159] In other examples, refer to Figure 17 and Figure 18 The fiber layer 421 is provided with two layers, and the thermal conductive film 423 is provided between the two fiber layers 421 .

[0160] In some other examples, the thermally conductive film 423 and the fiber layer 421 are respectively provided with multiple layers, and the thermally conductive film 423 and the fiber layer 421 are alternately stacked.

[0161] 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 thermally conductive films 423 to improve the thermal conductivity of the damper 420 .

[0162] For the damper 420 of this embodiment, the heat conductive film 423 is in contact with the actuator body 401 , which is beneficial to improving the heat transfer efficiency and further improving the heat dissipation efficiency of the actuator 410 .

[0163] Refer again Figure 14 In some embodiments of the present application, the exciter 400 further includes a pressure ring 440, which is configured to press the damper 420 against the exciter body 401. The pressure ring 440 can be metal, which helps ensure efficient heat transfer. The second connection portion 4203 of the damper 420 is pressed against the exciter body 401 by the pressure ring 440, improving the stability and tightness of the connection between the damper 420 and the exciter body 401 and facilitating heat transfer.

[0164] For example, the pressure ring 440 and the actuator body 401 as well as the pressure ring 440 and the damper 420 can be bonded together, and the connection method is simple and stable.

[0165] Continue to refer to Figure 14 , taking the exciter 400 as an electromagnetic exciter as an example, the electromagnetic exciter includes a magnetic component 450;

[0166] In some embodiments, the electromagnetic actuator includes a voice coil, wherein the magnetic assembly 450 is configured to generate a magnetic field, and the voice coil vibrates along the axis of the voice coil in the magnetic field.

[0167] 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.

[0168] One end of the voice coil is connected to the first light board 210. A connecting structure 411 can also be provided between the voice coil and the first light board 210 to increase the connection area between the voice coil and the first light board 210 and prevent the voice coil and the first light board 210 from being separated 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 actuator body 401 via a spring 420. As the magnetic field changes, the voice coil is forced to move back and forth along its own axis. In other words, when the actuator 400 is an electromagnetic actuator, 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.

[0169] 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 first light board 210. The reaction force of the electromagnetic force causes the larger actuator 400 to resonate at a lower frequency. The actuator body 401 has no fixed support but vibrates with the vibration of the driven first light board 210. This is the biggest difference between the OLED screen actuator housing and the bracket excitation method.

[0170] In some embodiments of the present application, the actuator body 401 includes a magnetic assembly 450 and a housing 430. The housing 430 is configured to support the magnetic assembly 450 and to achieve elastic mounting of the actuator 400. The magnetic conductive member 451 is fixedly connected to the housing 430. Specifically, in some embodiments of the present application, the magnetic conductive member 451 includes a U-shaped body and a connecting portion. The two ends of the U-shaped body are bent away from each other to form the connecting portion, and the connecting portion is connected to the housing 430.

[0171] The second connection portion 4203 of the damper 420 is pressed against the magnetic member 451 by the pressure ring 440. For example, the second connection 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, providing a simple and stable connection.

[0172] 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 magnetic component 451. Since the axial dimension of the actuator 410 is relatively large, the stacking and pressing of the pressure ring 440, the magnetic component 451 and the shell 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 exciter 400 compact.

[0173] Continue to refer to Figure 14 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 some embodiments of the present application do not limit the shape, number, or arrangement of the ventilation holes.

[0174] 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 some embodiments of the present application do not limit the shape, number, and arrangement of the ventilation holes.

[0175] Combine Figure 20 In some embodiments, the housing 430 of the actuator 400 is connected to the back plate 500 via a fixing pin 480 , and the fixing pin 480 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 .

[0176] 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 480, and a matching hole is set on the outer shell 430. The outer wall surface of the elastic pad 460 is provided with a clamping groove that is clamped with the outer shell 430. 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 480 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.

[0177] 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 vibration of the actuator 400, the housing 430 can reciprocate relative to the back panel 500. In this case, the actuator 400 also vibrates the first light panel 210 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.

[0178] Reference Figure 21 In other embodiments, a damping block 470 is provided at the end of the shell 430. The damping block 470 can be double-sided tape, foam, etc. The damping block 470 can be connected to the side of the first lamp board 210 facing the back panel 500. In this way, there is a large relative movement range between the shell 430 and the first lamp board 210, which is conducive to realizing the exciter 400 driving the display panel 100 to vibrate in an inertial driving manner.

[0179] In this way, when the exciter 400 is working, the actuator 410 can generate a higher frequency vibration and drive the first lamp board 210 to vibrate. Through the reaction force of the actuator 410, the shell 430 can drive the first lamp board 210 to vibrate with a lower frequency vibration, that is, the shell 430 vibrates with the vibration of the first lamp board 210, and the exciter 400 constitutes an inertial driving mode to drive the first lamp board 210 to vibrate.

[0180] Combine Figure 22In some embodiments, the display panel 100 includes a display film layer 120 and a diffuser film 113. The display film layer 120 is located on the side of the diffuser film 113 facing away from the backlight assembly 200. The display film layer 120 may be a liquid crystal film layer. A first sealing structure 610 is disposed at the edge between the diffuser film 113 and the display film layer 120. The first sealing structure 610 may be annular, and a cavity M is formed between the diffuser film 113 and the display film layer 120. The support member 300 is interferingly disposed between the diffuser film 113 and the first light board 210.

[0181] The first sealing structure 610 may be optical adhesive. The first sealing structure 610 imparts viscosity to the air within the cavity M. The cavity M is sealed, meaning that the air within the cavity M and the outside air cannot circulate. The air within the cavity M can function as a damping spring, configured to transmit vibrations between the diffuser film 113 and the display film layer 120.

[0182] The display device of some embodiments of the present application uses a combination of direct drive and air indirect drive to make the display panel 100 vibrate and produce sound. Among them, the vibration transmission between the exciter 400, the first light board 210 and the diffusion film 113 is direct drive, which can ensure the efficiency of vibration transmission; the vibration transmission between the diffusion film 113 and the display film layer 120 is viscous air gap transmission, which is indirect drive; the viscous air gap transmission vibration can make the display panel 100 evenly stressed across the entire plane, and the actual vibration area of the display panel 100 is larger than the solution with only direct drive in the related art. In this way, the display device of this embodiment can enable the display panel to achieve low-frequency sound performance with a smaller amplitude (for example, 0.3mm), solving the shortcoming of the display panel in the related art that it cannot be driven with a large amplitude.

[0183] Combine Figure 20 and Figure 21 The display panel 100 includes a display film layer 120, which can also be other film layers with display functions. The display film layer 120 may include 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 located between the color filter 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 direction of the liquid crystal molecules, directing backlight light through the color filter substrate and generating a preset color image.

[0184] In some embodiments, the display device further includes an optical film assembly 110 , which is disposed on a side of the display film layer 120 facing the light panel.

[0185] Depending on the type of light emitted by the light panel, the optical film assembly 110 can be of different types. For example, when the light panel emits white light, the optical film assembly 110 can include a reflective sheet, a light guide plate, a brightness enhancement film, etc. The reflective sheet is attached to the surface of the light panel where the light source is located.

[0186] When the light board emits blue light, the optical film assembly 110 may include a diffusion film 113, a fluorescent film 112 and a brightness enhancement film 111. The diffusion film 113 is arranged on the front side of the light board and is configured to mix the light of multiple light boards evenly, that is, to convert the lighting board into a surface light board. The fluorescent film 112 converts the light emitted by the light board into white light. In this way, the color of the light emitted by the light board is not limited, and the light board can emit blue light or purple light. The brightness enhancement film 111 is configured to increase the brightness of the light. It can be understood that when the light board emits white light, the optical film assembly 110 may also include a diffusion film 113, a fluorescent film 112 and a brightness enhancement film 111. This embodiment is described by taking the optical film assembly 110 including the diffusion film 113, the fluorescent film 112 and the brightness enhancement film 111 as an example.

[0187] In some embodiments, the display film layer 120 and the optical film assembly 110 can be bonded together, for example, using photosensitive adhesive (UV adhesive), foam, double-sided tape, etc. In other words, the display panel 100 and the optical film assembly 110 can be bonded together to form a single unit. In this case, the vibration force transmitted from the actuator 400 to the first light board 210 is transmitted to the display film layer 120 through the optical film assembly 110.

[0188] In other embodiments, a gas gap is formed between the display film layer 120 and the brightness enhancement film 111; and / or a gas gap is formed between the brightness enhancement film 111 and the fluorescent film 112; and / or a gas gap is formed between the fluorescent film 112 and the diffusion film 113. The gas gaps are closed, forming the cavity M of the above-mentioned embodiments. In other words, the cavity M can be formed between the display film layer 120 and the brightness enhancement film 111, between the brightness enhancement film 111 and the fluorescent film 112, or between the fluorescent film 112 and the diffusion film 113; or, the cavity M includes at least two of the three gas gaps described above.

[0189] Combine Figures 20 to 22 The display device 10 includes a second adhesive sealing structure 620, which is a double-sided tape or foam. The second sealing structure 620 extends along the edge of the backlight assembly. The optical film assembly 110 and the backlight assembly are bonded and fixed via the second sealing structure 620. That is, the diffusion film 113 and the backlight assembly 200 are bonded and fixed via the second sealing structure 620. In this way, the backlight assembly can also support the display panel 100.

[0190] A support member 300 is provided between the first light board 210 and the display panel 100 to transmit vibration force. The cross-section of the support member 300 (the cross-section perpendicular to the display device) can be rectangular or cylindrical; the cross-section of the support member 300 can also be conical, trapezoidal, dumbbell-shaped, or other shapes.

[0191] In some embodiments of the present application, the support member 300 is interference-fitted between the display panel 100 and the first light board 210, that is, the combination of the two ends of the support member 300 with the display panel 100 and the first light board 210 can adopt a dimensional interference fit design, that is, the dimension of the support member 300 along the thickness direction of the display device is larger than the design dimension of the interval between the display panel 100 and the first light board 210.

[0192] In some embodiments, the support member 300 can be connected to the first light board 210 through a first adhesive structure, such as UV glue, double-sided tape, etc., to prevent the support member 300 from moving relative to the first light board 210.

[0193] like Figure 23 As shown, the support member 300 includes a rigid portion 302 and a buffer portion 301, which are connected to each other. The rigid portion 302 is connected to the first light board 210, and the buffer portion 301 is connected to the display panel 100. The height of the rigid portion 302 is greater than the height of the light source 240 of the first light board 210 protruding from the board body 230. This ensures that the light source 240 does not contact the display panel 100 and cause wear when the support member 300 is under pressure.

[0194] The rigid part 302 can be a hard plastic part, and the buffer part 301 can be made of an elastic material such as silicone rubber. The rigid part 302 is used as an inlay and is injection molded on its outer side to form the buffer part 301. The rigid part 302 can be bonded to the first light board 210, and the connection method is simple and reliable.

[0195] The rigid part 302 can be a metal part made of easily weldable material, which is connected to the buffer part 301 by injection molding, mechanical fitting or bonding. The rigid part 302 is welded to the first lamp board 210 and is firmly installed, which is conducive to batch automatic assembly.

[0196] The support member 300 of some embodiments of the present application can utilize the buffering part 301 to ensure the vibration buffering effect by providing a combination of a rigid part 302 and a buffering part 301 that are connected to each other, and can also utilize the rigid part 302 to ensure that the light source 240 does not contact the display panel 100 and cause wear when the support member 300 is under pressure, thereby ensuring that the vibration transmission effect does not change with temperature changes.

[0197] The two ends of the support member 300 can be connected by negative pressure adsorption. For example, suction cup structures can be provided at both ends of the support member 300. The two ends of the support member 300 are fixedly connected to the first light board 210 and the display panel 100 respectively through the suction cup structure, and the process is simple to implement.

[0198] One end of the support member 300 is connected via a first adhesive structure, and the other end is connected via a suction cup structure. For example, one end of the support member 300 is connected to the first light board 210 via the first adhesive structure, and the other end is fixedly connected to the display panel 100 via the suction cup structure. Thus, the support member 300 can be secured by double-sided bonding or mechanical fixing, thereby achieving vibration linkage between the first 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 manufacturing processes. Using a suction cup solution can improve the feasibility of this solution.

[0199] The first lamp panel 210, as a vibration transmission part, needs to have the characteristics of high strength and low mass to avoid the influence of its own split vibration on the transmission efficiency of medium and high frequencies during vibration transmission. Figure 24 A reinforcing structure 250 is provided on the side of the first lamp board 21 away from the display panel 100, which improves the structural strength of the backlight assembly through the reverse support of the display panel and ensures the transmission efficiency of vibration energy.

[0200] In some embodiments, the reinforcement structure 250 may be annular. For example, the reinforcement structure 250 surrounds the edge of the first light board 210. Figure 24 The annular reinforcement structure 250 may be in the shape of a ring or a closed ring structure of other shapes. The actuator 400 may be disposed at the center of the annular reinforcement structure 250 .

[0201] A plurality of annular reinforcement structures 250 may be provided, and the radius of the plurality of reinforcement structures 250 gradually increases in a direction away from the exciter 400 , so that the plurality of reinforcement structures 250 are nested in sequence.

[0202] The support member 300 is disposed at a position corresponding to the reinforcement structure 250 , and further suppresses the amplitude of the split vibration through the reverse pressure of the display panel to ensure the vibration transmission efficiency.

[0203] The display device 10 further includes a rear cover (not shown), which is located on the side of the back plate 500 away from the display panel 100, that is, the rear cover is arranged on the rear side of the back plate 500. The controller, electrical connection lines, etc. of the display device 10 can be arranged between the back plate 500 and the rear cover to simplify the appearance of the display device 10. The material of the rear cover can be plastic, metal, etc.

[0204] 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.

[0205] For ease of explanation, the above description has been made with reference to specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments are selected and described to better explain the principles and practical applications, so that those skilled in the art can better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that: include: a display panel configured to display image information; a backlight assembly, located on one side of the display panel; The backlight assembly comprises: First light board, a second light board, wherein the second light board and the first light board are arranged side by side on the same plane; a support member, interference-interferencely disposed between the first light board and the display panel; an exciter, wherein a vibration output end of the exciter is connected to the first light board, and the exciter is configured to drive the first light board to vibrate, and to ensure that the first light board and the second light board are spaced apart along the vibration direction; A back plate is supported on a side of the second light board facing away from the display panel.

2. The display device according to claim 1, wherein The first light board is elastically connected to the back board via a connecting component; or, there is a gap between the first light board and the back board, and the exciter is configured to support the first light board.

3. The display device according to claim 2, wherein The two ends of the connecting component are respectively bonded to the first light board and the backboard; or, The connecting component includes two connecting bodies and an elastic portion. The two connecting bodies are respectively fixed to the back plate and the first lamp board. There is a gap between the two connecting bodies, and the elastic portion is connected between the two connecting bodies.

4. The display device according to claim 1, wherein There are a plurality of the exciters, wherein a plurality of the exciters are arranged at the edges of the first light board, and at least one of the exciters is arranged at the center of the first light board.

5. The display device according to claim 1, wherein The second light panel is rigidly connected to the back panel.

6. The display device according to any one of claims 1 to 5, characterized in that: The backlight assembly further includes a sound-generating plate, which is fixed to a side of the first lamp board facing away from the display panel; and the vibration output end of the exciter is connected to the sound-generating plate.

7. The display device according to any one of claims 1 to 5, characterized in that: The display panel includes a display film layer and a diffusion film, wherein the display film layer is located on a side of the diffusion film away from the backlight assembly; a first sealing structure is provided at an edge between the diffusion film and the display film layer, and a cavity is formed between the diffusion film and the display film layer through the first sealing structure; The support member is interference-connected between the diffusion film and the first light board.

8. The display device according to any one of claims 1 to 5, characterized in that: The first light board includes a board body and a light source arranged on the board body; The support member includes a rigid portion and a buffer portion connected to each other, the rigid portion is connected to the first light board, and the buffer portion is connected to the display panel; the height of the rigid portion is greater than the height of the light source protruding from the board body.

9. The display device according to any one of claims 1 to 5, characterized in that: A reinforcement structure is provided on a side of the first light board facing away from the display panel.

10. The display device according to any one of claims 1 to 5, characterized in that: There are multiple first lamp panels, and the multiple first lamp panels are spliced together through a first connecting piece; the vibration output end of the exciter is connected to the first connecting piece.

Images