Display device

Abstract

The embodiment of the utility model 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 and an exciter, the backlight assembly comprises a plurality of lamp panels, and the vibration output end of the exciter is connected with part of the lamp panels and drives the lamp panels connected with the exciter to vibrate. The supporting piece is supported between the lamp panel and the display panel which are connected with the exciter, the exciter excites the display panel to vibrate through part of the 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 lamp panel connected with the exciter and the lamp panel not connected with the exciter are arranged at an interval in the vibration direction, so that the vibratable lamp panel and the peripheral structure of the vibratable lamp panel are in an open type design, the air reaction force of the lamp panel is reduced, the pushing resistance is reduced, and the vibration transmission efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display device. Background Technology

[0002] The display device utilizes "flat panel sound technology," placing an exciter behind the image displayed on the display panel. Under the action of the exciter, the display panel vibrates to generate sound waves. In other words, the display panel of the device can be used for both display and as a substitute for a speaker to produce sound.

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

[0004] Some embodiments of this application provide a display device that can improve vibration transmission efficiency, thereby improving acoustic performance.

[0005] Some embodiments of this application provide a display device, which includes:

[0006] The display panel is configured to display image information;

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

[0008] An exciter, wherein the vibration output end of the exciter is connected to a portion of the multiple lamp panels and drives the connected lamp panels to vibrate, such that the lamp panels connected to the exciter and the lamp panels not connected to the exciter are spaced apart along the vibration direction;

[0009] A support member is provided between the lamp plate and the display panel, which are connected to the actuator.

[0010] In some embodiments of the display device of this application, the vibration output end of the exciter is connected to a portion of the lamp panel and drives the connected lamp panel to vibrate. A support member is supported between the lamp panel connected to the exciter and the display panel. The exciter excites the display panel to vibrate through the portion of the lamp panel and the support member, thereby reducing the mass driven by the exciter, reducing the loss of vibration energy, and ensuring vibration transmission efficiency. The lamp panel connected to the exciter and the lamp panel not connected to the exciter are spaced apart along the vibration direction, so that the vibrating lamp panel and its surrounding structure are in an open design, reducing the air reaction force of the lamp panel, reducing the pushing resistance, and improving the vibration transmission efficiency. Attached Figure Description

[0011] To more clearly illustrate the implementation methods in some embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0012] Figure 1 This is a schematic diagram illustrating an operational scenario between a display device and a control device according to some embodiments of this application;

[0013] Figure 2 This is a block diagram illustrating the configuration of a display device according to some embodiments of this application;

[0014] Figure 3 This is a cross-sectional schematic diagram of a display device according to some embodiments of this application;

[0015] Figure 4 Schematic diagrams showing different states of the first and second light panels in some embodiments of this application;

[0016] Figure 5 This is a cross-sectional schematic diagram of a display device according to some embodiments of this application;

[0017] Figure 6 This is a schematic diagram showing the connection between the first lamp panel and the back panel in some embodiments of this application;

[0018] Figure 7 This is a cross-sectional schematic diagram of a display device according to some embodiments of this application;

[0019] Figure 8 This application provides a schematic diagram showing the positions of the first light panel and the back panel in some embodiments. Figure 1 ;

[0020] Figure 9 This application provides a schematic diagram showing the positions of the first light panel and the back panel in some embodiments. Figure 2 ;

[0021] Figure 10 This application provides a schematic diagram showing the positions of the first light panel and the back panel in some embodiments. Figure 3 ;

[0022] Figure 11 This application provides a schematic diagram showing the positions of the first light panel and the back panel in some embodiments. Figure 4 ;

[0023] Figure 12 This is a schematic diagram of the arrangement of exciters in some embodiments of this application. Figure 1 ;

[0024] Figure 13 This is a schematic diagram of the arrangement of exciters in some embodiments of this application. Figure 2 ;

[0025] Figure 14 The diagram shows the structure of some implementations of the exciter in this application;

[0026] Figure 15 Schematic diagram of the structure of some embodiments of the ballistic wave in this application Figure 1 ;

[0027] Figure 16 Schematic diagram of the structure of some embodiments of the ballistic wave in this application Figure 2 ;

[0028] Figure 17 Schematic diagram of the structure of some embodiments of the ballistic wave in this application Figure 3 ;

[0029] Figure 18 Schematic diagram of the structure of some embodiments of the ballistic wave in this application Figure 4 ;

[0030] Figure 19 Schematic diagram of the structure of some embodiments of the ballistic wave in this application Figure 5 ;

[0031] Figure 20 This is a cross-sectional schematic diagram of a display device according to some embodiments of this application;

[0032] Figure 21 This is a cross-sectional schematic diagram of a display device according to some embodiments of this application;

[0033] Figure 22 This is a cross-sectional schematic diagram of a display device according to some embodiments of this application;

[0034] Figure 23 This is a cross-sectional schematic diagram of a display device according to some embodiments of this application;

[0035] Figure 24 This is a schematic diagram of the arrangement of backlight components in some embodiments of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 10: Display devices; 20: Smart devices; 30: Servers;

[0038] 100: Display panel; 110: Optical film assembly; 111: Brightness enhancement film; 112: Fluorescent film; 113: Diffuse film; 120: Display film layer;

[0039] 200: Backlight assembly; 210: First lamp panel; 211: Connecting component; 2111: Connecting body; 2112: Elastic part; 212: Sound-emitting plate; 2121: Weight reduction structure; 213: First connector; 220: Second lamp panel; 221: Second connector; 230: Panel body; 240: Light source; 250: Reinforcing structure;

[0040] 300: Support component; 301: Buffer section; 302: Rigid section;

[0041] 400: Actuator; 401: Actuator body; 410: Actuator; 411: Connecting structure; 420: Spindle; 4201: Body part; 4202: First connecting part; 4203: Second connecting part; 421: Fiber layer; 422: Thermal conductive layer; 423: Thermal conductive film; 4231: Through hole; 430: Outer shell; 440: Pressure ring; 450: Magnetic component; 451: Magnetic conductor; 452: Magnetic component; 460: Elastic pad; 470: Damping block; 480: Fixing pin;

[0042] 500: Back panel; 501: Back panel body; 502: First side panel; 503: Opening; 504: Protrusion;

[0043] 610: First sealing structure; 620: Second sealing structure;

[0044] 900: Control device; 901: Tuner / 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;

[0045] M: cavity; N: magnetic air gap. Detailed Implementation

[0046] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0047] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0048] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0049] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0050] The terms "first" and "second" are configured for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0051] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0052] 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 image and the picture image, leading to a poor viewing experience and failing to provide a truly immersive audio-visual experience. In related technologies, display devices incorporate exciters that enable the display panel to emit sound, allowing the display panel to perform both display and sound functions, achieving a truly immersive audio-visual experience.

[0053] In related technologies, the exciter directly drives the display panel to produce sound, such as in OLED display devices. The display panel has a large overall area and mass; the display panel generates the largest amplitude at the location of the exciter. As it moves away from the exciter, the vibration energy rapidly decays, the amplitude gradually decreases, and the vibration efficiency is low, resulting in poor acoustic performance. Increasing the amplitude to improve vibration energy presents a contradiction between the display panel's amplitude and its installation reliability and display function, limiting the display panel's sound emission frequency to only the mid-to-high frequencies.

[0054] In related technologies, the exciter drives the display panel to produce sound through the lamp panel, such as in LCD display devices. Since multiple lamp panels are assembled into a whole, there is also the problem of large overall area and mass, which leads to rapid attenuation of vibration energy.

[0055] In view of this, some embodiments of this application divide the light panels into two types. The first type of light panel is connected to the vibration output end of the exciter, and a support member is provided between the first type of light panel and the display panel. The exciter excites the display panel to vibrate through the first type of light panel and the support member, thereby reducing the mass driven by the exciter, reducing the loss of vibration energy, and ensuring vibration transmission efficiency. The second type of light panel is connected to the back plate, and the second type of light panel and the first type of light panel are spaced apart along the vibration direction, so that the vibrating first type of light panel and its surrounding structure are in an open design, reducing the air reaction force of the first type of light panel, thereby reducing the pushing resistance and improving the vibration transmission efficiency.

[0056] In related technologies, compared to display devices using OLED light sources, OLED displays are self-emissive screens with inherent flexibility. Therefore, by placing an exciter on the back of the OLED display, the screen can elastically deform and generate sound under the excitation vibration of the exciter. However, in liquid crystal displays (LCDs), which have backlight modules, it's impossible to directly place an exciter on the back of the display panel. Furthermore, the lamp board in the backlight module is relatively rigid, making it difficult to couple and transmit its vibration to the display panel, resulting in low vibration transmission efficiency. Therefore, a support structure can be placed between the display panel and the lamp board in Mini-LED displays or other LCD devices. This support structure acts as a vibration transmission medium, transmitting the vibration of the lamp board to the display panel, thereby improving the transmission efficiency of vibration from the lamp board to the display panel. Additionally, the support structure maintains the gap in the gas layer between the lamp board and the display panel within a preset range, preventing the light source and display panel from colliding at a certain location, thus avoiding collision noise and abrasion risks.

[0057] The technical solutions of some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] The display device provided in this application can have various implementation forms, such as a television, a smart television, a monitor, an electronic bulletin board, an electronic table, etc. Figure 1 and Figure 2 This is one specific embodiment of the display device of this application.

[0059] Figure 1This is a schematic diagram illustrating an operational scenario between a display device and a control device according to an exemplary embodiment of this application. Figure 1 As shown, a user can operate the display device 10 via the smart device 20 or the control device 900. In some embodiments, the display device 10 also communicates with the server 30. The display device 10 may communicate via a local area network (LAN), a wireless local area network (WLAN), and other networks. The server 30 can provide various content and interactive features to the display device 10. The server 30 may be a cluster or multiple clusters, and may include one or more types of servers.

[0060] Figure 2 This is a schematic diagram of the device structure shown in an example, such as... Figure 2 The display device 10 includes a tuner / demodulator 901, which receives broadcast television signals via wired or wireless means and demodulates audio and video signals, such as EPG data signals, from multiple wireless or wired broadcast television signals.

[0061] 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 a first interface to an nth interface configured as input / output.

[0062] In some embodiments, the display device 10 includes an audio output interface 907;

[0063] In some embodiments, the display device 10 includes a memory 908;

[0064] In some embodiments, the display device 10 includes a power supply 909;

[0065] In some embodiments, the display device 10 includes a display 906, which includes a display screen component configured to present an image, a driving component for driving the image display, a component configured to receive image signals from a controller output, and a user control UI interface for displaying video content, image content, menu control interface, and user control UI interface.

[0066] The display 906 can be a liquid crystal display, an OLED display, or a projection display, and can also be a projection device and a projection screen.

[0067] In some embodiments, the display device 10 includes a communicator 902, which is a component configured to communicate with external devices or servers according to various communication protocol types. 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 chips or near-field communication protocol chips, as well as an infrared receiver. The display device 10 can establish the transmission and reception of control signals and data signals with the control device 900 or the server 30 through the communicator 902.

[0068] In some embodiments, the display device 10 includes at least one of the user interfaces 910, which can be configured to receive control signals from a control device 900 (e.g., an infrared remote control).

[0069] In some embodiments, the display device 10 includes a detector 903 configured to acquire signals from the external environment or interactions with the outside world. For example, the detector 903 may include a light receiver configured to acquire a sensor for ambient light intensity; or, the detector 903 may include an image acquisition device, such as a camera, configured to acquire external environmental scenes, user attributes, or user interaction gestures; or, the detector 903 may include a sound acquisition device, such as a microphone, configured to receive external sounds.

[0070] In some embodiments, the display device 10 includes an external device interface 904, which may include, but is not limited to, one or more interfaces such as: High Definition Multimedia Interface (HDMI), analog or data high-definition component input interface (component), composite video input interface (CVBS), USB input interface (USB), RGB port, etc. It may also be a composite input / output interface formed by multiple interfaces mentioned above.

[0071] In some embodiments, the controller 905 and the tuner 901 may be located in different separate devices, that is, the tuner 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.

[0072] 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 display on the monitor 906, the controller 905 can perform operations related to the object selected by the user command.

[0073] In some embodiments, the controller includes at least one of a central processing unit (CPU), a video processor, an audio processor, a graphics processing unit (GPU), RAM (random access memory), ROM (read-only memory), a first to an nth interface configured as input / output, a communication bus, etc.

[0074] Users can input commands through a graphical user interface (GUI) displayed on monitor 906, and the user input interface receives the user input commands through the GUI. Alternatively, users can input commands by entering specific sounds or gestures, and the user input interface receives the user input commands by recognizing the sounds or gestures through sensors.

[0075] A "user interface" is the medium through which an application or operating system interacts and exchanges information with the user. It converts information from its internal form to a form that the user can accept. A common form of user interface is the graphical user interface (GUI), which refers to a user interface related to computer operation displayed graphically. It can be an icon, window, control, or other interface element displayed on the screen of an electronic device. Controls can include visual interface elements such as icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, and widgets.

[0076] Some embodiments of this application provide a display device 10, which may be a liquid crystal display device. The display device 10 has a top side, a ground side, a left side, a right side, a front side, and a rear side. The left and right sides of the display device 10 refer to the user's left and right sides when the user is facing the display surface of the display device. Correspondingly, the side of the display device 10 facing the user is the front side, the side of the display device 10 away from the user is the rear side, the top side of the display device 10 is the top side, and the bottom side of the display device 10 is the ground side.

[0077] Reference Figure 3 The display device 10 in some embodiments of this 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 produce sound under the excitation of the exciter 400.

[0078] In some embodiments, the display device 10 further includes a backlight assembly 200 located on one side of the display panel 100, the backlight assembly 200 being used to provide backlight for the display panel 100.

[0079] In some embodiments, the display device 10 further includes an exciter 400 disposed on the side of the backlight assembly 200 away from the display panel 100, the exciter 400 providing vibration force for the vibration of the display panel 100 to produce sound.

[0080] In some embodiments, the display device 10 further includes a back plate 500, which is disposed on the side of the backlight assembly 200 away from the display panel 100, i.e., 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 may be made of aluminum alloy, steel, etc., to provide effective support.

[0081] In some embodiments of this application, the backlight assembly 200 is located on one side of the display panel 100. The backlight assembly 200 includes a lamp 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 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.

[0082] In some embodiments, considering factors such as the size of the display device 10 and the manufacturing process of the lamp panels, the backlight assembly 200 includes a plurality of lamp panels arranged side by side on the same plane.

[0083] In some embodiments, the vibration output end of the exciter 400 is connected to a portion of the multiple lamp panels and drives the connected lamp panels to vibrate, such that the lamp panels connected to the exciter 400 and the lamp panels not connected to the exciter 400 are spaced apart along the vibration direction.

[0084] In some embodiments, the multiple lamp panels are divided into a first lamp panel 210 and a second lamp panel 220. The first lamp panel 210 is connected to the vibration output end of the exciter 400, so that the first lamp panel 210 can vibrate under the excitation of the exciter 400. The second lamp panel 220 is not connected to the exciter 400, and the second lamp panel 220 is connected to the back plate 500, which supports the second lamp panel 220.

[0085] Combination Figure 4As shown in Figure a, in the initial state, i.e. when the exciter 400 is not vibrating, the first lamp plate 210 and the second lamp plate 220 are arranged side by side on the same plane to provide backlight to the display panel 100 stably and reliably, thus ensuring the display effect of the display panel 100.

[0086] Combination Figure 4 As shown in Figure b, during the vibration state, i.e., when the exciter 400 vibrates, the exciter 400 drives the first lamp plate 210 to vibrate, resulting in a distance ΔL between the first lamp plate 210 and the second lamp plate 220 along the vibration direction (the direction of the arrow in the attached figure). With this configuration, instead of exciting all lamp plates, the exciter 400 only needs to excite the first lamp plate 210, reducing the mass required for the exciter 400 to drive, which helps to reduce vibration energy loss and improve vibration efficiency.

[0087] Furthermore, the first lamp plate 210 and the second lamp plate 220 are spaced apart by ΔL along the vibration direction (arrow direction in the attached figure), which makes the vibrating first lamp plate 210 and its surrounding structure an open design, reducing the air reaction force of the first lamp plate 210, reducing the pushing resistance, and helping to further improve the vibration transmission efficiency.

[0088] Due to the existence of the gap ΔL between the first lamp panel 210 and the second lamp panel 220, the gap between the backlight assembly 200 and the display panel 100 is a non-sealed gap, and the effect of transmitting vibration using the air viscosity of this gap is weak. In order to ensure that the vibration force is transmitted to the display panel 100, the display device 10 of some embodiments of this application is provided with a support member 300, which is supported between the lamp panel and the display panel 100 connected to the exciter 400.

[0089] In some embodiments, the support member 300 is supported between the first lamp panel 210 and the display panel 100. The support member 300 can be made of a high-resilience material or a combination of materials with resilience, such as silicone.

[0090] In some embodiments, the support member 300 is interference-fitted between the first lamp plate 210 and the display panel 100.

[0091] Thus, the vibration transmission between the exciter 400, the first lamp board 210, and the display panel 100 is a direct drive, which helps to ensure the transmission efficiency of vibration; and the support member 300 helps to ensure the stability of the distance between the display panel 100 and the first lamp board 210, and avoids abnormal collision noise between the display panel 100 and the first lamp board 210.

[0092] It should be noted that in some embodiments of this application, the first lamp board 210 and the second lamp board 220 have the same structure but different connection methods, which facilitates processing and assembly and helps to reduce costs.

[0093] For OLED displays, due to their inherent flexibility, they can elastically deform and generate sound under the excitation vibration of an exciter. However, for conventional LCD displays, the support components that support the LCD screen do not vibrate or generate sound because the LCD screen is fixed; the support components simply provide rigid support. In some embodiments of this application, the support member 300 not only supports the display panel 100 but also transmits the vibration of the backlight assembly 200 to the display panel 100, thus buffering the sound waves transmitted to the display panel 100.

[0094] In some embodiments of this application, the exciter 400 and the first lamp plate 210 form a vibrating body. The exciter 400 is the excitation part of the vibrating body and is configured to provide driving force. The first lamp plate 210 is the vibration transmission part of the vibrating body and is configured to transmit the vibration force of the exciter 400 to the display panel 100 with low loss. The first lamp plate 210 has the characteristics of light weight and high Young's modulus, and can reduce mid-to-high frequency segmented vibration to improve vibration transmission efficiency and reduce vibration transmission loss.

[0095] Combination Figure 5 In some embodiments of this application, the second lamp panel 220 is fixedly connected to the back plate 500, with the back plate 500 supporting and reinforcing the second lamp panel 220. In some embodiments, the second lamp panel 220 and the back plate 500 are rigidly connected, for example, the second lamp panel 220 and the back plate 500 are rigidly connected by a second connector 221. This ensures the stability and reliability of the connection between the second lamp panel 220 and the back plate 500, and also allows the second lamp panel 220 and the back plate 500 to jointly form a rigid surface structure. This rigid surface structure does not participate in vibration and sound generation, but exists as a base surface to reinforce the display panel. Exemplarily, the second lamp panel 220 and the back plate 500 are fixedly connected by a mechanical structure, for example, the second lamp panel 220 and the back plate 500 are fixedly connected by screws; exemplaryly, the second lamp panel 220 and the back plate 500 are connected by hard double-sided tape or glue.

[0096] When multiple second lamp panels 220 are provided, the multiple second lamp panels 220 are respectively connected to the back plate 500 through the second connector 221, which helps to ensure the flatness of the multiple second lamp panels 220 and the convenience of assembly.

[0097] Although the second lamp panel 220 does not participate in vibration sound generation, the gap between the display panel 100 and the second lamp panel 220 changes repeatedly when the display panel 100 vibrates to generate sound. In order to avoid collision between the light sources of the display panel 100 and the second lamp panel 220, which may cause abnormal noise or wear, some embodiments of this application may also provide a support member 300 with interference fit between the second lamp panel 220 and the display panel 100.

[0098] In some embodiments of this application, the first lamp panel 210 and the back panel 500 may be unconnected, such as... Figure 3 As shown; or, the first lamp panel 210 is connected to the back panel 500, such as... Figure 5 and Figure 6 As shown.

[0099] Specifically, in combination Figure 3 The first lamp panel 210 is spaced apart from the back plate 500, and the exciter 400 is configured to support the first lamp panel 210. This arrangement can reduce the assembly process of the first lamp panel 210.

[0100] Combination Figure 5 The first lamp panel 210 and the back plate 500 are connected by a connecting component 211, making the connection between them elastic. The connecting component 211 can be an elastic component made of an elastic material. This arrangement facilitates the installation of the first lamp panel 210, ensuring that it is on the same plane as the second lamp panel 220 in the initial state; it also ensures the stability and reliability of the first lamp panel 210 structure. The elastic connection between the first lamp panel 210 and the back plate 500 also prevents vibration reaction forces from being transmitted to the back plate 500.

[0101] For example, the two ends of the connecting component 211 are respectively bonded to the first lamp panel 210 and the back panel 500. For example, the connecting component 211 is an elastic double-sided adhesive. This arrangement makes the connection between the first lamp panel 210 and the back panel 500 simple, reliable, and flexible.

[0102] For example, in combination Figure 6 The connecting component 211 includes two connecting bodies 2111 and an elastic part 2112. The two connecting bodies 2111 are respectively fixed to the back plate 500 and the first lamp plate 210. For example, the connecting body 2111 is a column, and the back plate 500 and the first lamp plate 210 are respectively provided with mounting holes, into which the connecting body 2111 is riveted; for example, the back plate 500 is provided with threaded holes, into which the connecting body 2111 is threadedly connected; for example, the connecting body 2111 is bonded to the first lamp plate 210. The connection methods of the two connecting bodies 2111 can be the same or different, and some embodiments of this application do not limit this. There is a gap between the two connecting bodies 2111. It should be noted that even when the gap between the first lamp plate 210 and the back plate 500 is at its minimum, there is still a gap between the two connecting bodies 2111 to avoid collisions and abnormal noises between the two connecting bodies 2111.

[0103] The elastic part 2112 is connected between the two connecting bodies 2111. The elastic part 2112 is a component with elasticity, such as a spring; the two ends of the spring can be fixed to the two connecting bodies 2111, or the two ends of the spring can be sleeved on the outside of the two connecting bodies 2111. In this example, the connecting component 211 achieves an elastic connection between the first lamp plate 210 and the back plate 500 through the two connecting bodies 2111 and the elastic part 2112, and the connection is stable and reliable.

[0104] Combination Figure 7 and Figure 8 In some embodiments of this application, the backlight assembly 200 further includes a sound-emitting plate 212. The thickness of the sound-emitting plate 212 can be 1mm to 4mm, for example, 1mm to 2mm, 2mm to 3mm, or 3mm to 4mm; exemplaryly, the thickness can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.2mm, 2.5mm, 2.7mm, 3mm, 3.3mm, or 3.5mm.

[0105] 3.8mm, 3.9mm, etc. The sound-emitting plate 212 is fixed to the side of the first lamp plate 210 away from the display panel 100. For example, the sound-emitting plate 212 is bonded and fixed to the first lamp plate 210 by adhesives such as double-sided tape. At this time, the vibration output end of the exciter 400 is connected to the sound-emitting plate 212.

[0106] In some embodiments, the lamp panel 210 can also dissipate heat through the sound-emitting plate 212. For example, the sound-emitting plate 212 includes a metal layer that transfers heat from the lamp panel 210 through contact and dissipates the heat, thereby playing the role of heat dissipation for the lamp panel 210.

[0107] The sound-emitting panel 212 may include a sandwich panel or a carbon fiber panel. The sandwich panel can be any of the following: honeycomb sandwich panel, foam sandwich panel, wood sandwich panel, and acrylic panel, which are low in cost and readily available. Among them, 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.; and the wood sandwich panel can be a balsa wood such as balsa wood.

[0108] As is well known to those skilled in the art, the sound quality can be measured in terms of volume, frequency response range, and timbre. Among these, the sound emitted by the sandwich panel has a higher volume and a wider, less fluctuating audio response compared to the sound emitted by the aluminum plate. In other words, by setting the sound-emitting plate 212, the sound emitted by the display device can have better sound quality.

[0109] In some embodiments, the sound-emitting plate 212 includes a honeycomb plate and an aluminum substrate. While ensuring the structural strength of the sound-emitting plate 212, the mass of the sound-emitting plate 212 is reduced, thereby reducing the mass driven by the exciter 400 and reducing the loss of vibration energy.

[0110] In some embodiments, the aluminum substrate on the side of the sound-emitting plate 212 facing the exciter 400 can be replaced with a fiberglass skin, which can prevent the heat from the lamp plate from being transferred to the exciter 400 through the aluminum substrate, thus preventing the operating temperature of the exciter 400 from rising.

[0111] Among them, the damping of the sound-emitting plate 212 is greater than the damping of the plate body of the first lamp plate 210. Compared with the plate body in the related technology, the density and mass of the sound-emitting plate 212 are smaller.

[0112] like Figure 8 As shown, when the exciter 400 drives the first lamp plate 210 and the sound-emitting plate 212 to vibrate, the sound-emitting plate 212 and the second lamp plate 220 have a distance ΔL along the vibration direction.

[0113] The sound-emitting plate 212 can be the same size as the first lamp plate 210; or, the size of the sound-emitting plate 212 can be smaller than the size of the first lamp plate 210 to reduce the mass driven by the exciter 400. For example... Figure 9 As shown, in order to reduce the mass of the sound-emitting plate 212, a weight-reducing structure 2121 can be provided on the sound-emitting plate 212. The weight-reducing structure 2121 can be a hole or a groove, etc. Some embodiments of this application do not limit the number and arrangement of holes or grooves.

[0114] In some embodiments of this application, the sound-emitting plate 212 can be provided to reinforce the structure of the first lamp plate 210. The sound-emitting plate 212 has greater damping and lower mass and density, which can improve the equivalent damping of the first lamp plate 210, reduce the equivalent density of the first lamp plate 210, increase the bending modulus of the first lamp plate 210, increase the number of modal resonant 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 the display panel 100's audio response from producing obvious peaks and valleys and distortion, thus affecting the listening experience.

[0115] Combination Figure 5In some embodiments, the back plate 500 includes a back plate body 501 and a first side plate 502. The back plate body 501 is configured to support the lamp plate and the display panel 100. An opening 503 is provided on the back plate body 501, through which the actuator 400 is connected to the first lamp plate 210. With this configuration, the back plate 500 does not need to have a protrusion, only the opening 503, which simplifies the structure of the back plate 500, facilitates processing, and reduces costs. Furthermore, the absence of a back plate 500 at the position corresponding to the actuator 400 helps to reduce the thickness of the display device. The first side plate 502 extends along the edge of the back plate body 501 and protrudes from the back plate body 501 toward one side of the display panel 100, that is, the first side plate 502 protrudes from the front side of the back plate body 501. Thus, the first side plate 502 surrounds the lamp plate and the display panel 100 on the circumferential outer side.

[0116] Combination Figure 7 In some other embodiments, the back panel body 501 is provided with a protrusion 504 at the position corresponding to the first lamp panel 210. The protrusion 504 protrudes away from the first lamp panel 210 to accommodate the sound-emitting plate 212.

[0117] like Figure 10 As shown, multiple first lamp panels 210 are provided, and multiple first lamp panels 210 are spliced ​​together by first connectors 213; the vibration output end of the exciter 400 is connected to the first connectors 213.

[0118] The area of ​​the first connector 213 can be the same as the sum of the areas of the multiple first lamp panels 210, thus providing stable and reliable support for the first lamp panels 210. Alternatively, as... Figure 11 As shown, the first connector 213 can be set at the splicing point of two adjacent first lamp panels 210. This setting allows multiple first lamp panels 210 to be spliced ​​together while reducing the mass driven by the exciter 400, thereby reducing the loss of vibration.

[0119] In some embodiments, the first connector 213 can be a rigid component, such as a sound-emitting plate, which can reinforce the first light panel 210 while splicing multiple first light panels 210.

[0120] In other embodiments, the first connector 213 can be an adhesive, such as double-sided tape, foam, etc., making the splicing of multiple first light panels 210 simple and convenient.

[0121] In some embodiments of this application, by setting multiple first lamp boards 210, the vibration area is increased, thereby facilitating the transmission of vibration 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 spliced ​​together by first connectors 213, which facilitates the assembly of the multiple first lamp boards 210 and achieves a coplanar arrangement with the second lamp board 220; the exciter 400 excites the first lamp boards 210 through the first connectors 213.

[0122] Combination Figure 12 and Figure 13 Multiple exciters 400 are provided to increase the vibration force. In particular, when the first lamp plate 210 is not connected to the back plate 500, multiple exciters 400 can more stably support the first lamp plate 210.

[0123] like Figure 12 As shown, in some implementations, an exciter 400 is provided at the center of the first lamp panel 210, and multiple exciters 400 are arranged circumferentially around the exciter 400.

[0124] like Figure 13 As shown, a plurality of actuators 400 are disposed on the edge of the first lamp panel 210, wherein at least one actuator 400 is disposed at the center of the first lamp panel 210.

[0125] Among them, the exciter 400 located at the center of the first lamp board 210 can be designed with a low resonant frequency, and its vibration system has a small elasticity; the multiple exciters 400 arranged in the circumferential direction can be designed with a high resonant frequency to improve the acoustic effect of the display device.

[0126] Some embodiments of this application, by setting multiple exciters 400, can not only stably and reliably support the first lamp board 210, but also make the first lamp board 210 vibrate along the front-back direction of the display device without tilting.

[0127] In some embodiments of this application, the actuator 400 is an electric actuator, such as an electromagnetic actuator, a magnetostrictive actuator, and a piezoelectric actuator. (In conjunction with...) Figure 14 The exciter 400 in some embodiments of this 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 plate 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.

[0128] When the exciter 400 is activated, the actuator 410 vibrates and drives the first lamp panel 210 to vibrate. The vibration force is transmitted to the display panel 100 through the support member 300, thereby causing the display panel 100 to vibrate and produce sound. In this way, the display device of some embodiments of this application can achieve front-side sound generation, and the sound image position is approximately coincident with the center position of the screen, achieving audio-visual integration and providing users with a better audio-visual experience.

[0129] In some embodiments, the central axis of the actuator 400 is perpendicular to the first lamp plate 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 In the vertical direction.

[0130] 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 plate 210, and to prevent the actuator 410 and the first lamp plate 210 from detaching from each other.

[0131] In some embodiments, the connection structure 411 is sheet-like, which allows the actuator 410 and the lamp plate 210 to have a larger connection area, and the sheet-like structure helps to reduce the weight of the actuator 400.

[0132] In some embodiments of this application, the central axis of the spring 420 coincides with the central axis of the actuator 400. The spring 420 includes a body portion 4201 and a first connecting portion 4202 and a second connecting portion 4203 disposed at both ends of the body portion 4201; wherein, the body portion 4201 is arranged in a plane parallel to the display panel, the body portion 4201 is annular, and the body portion 4201 is wavy in the radial direction, so that the spring 4200 is elastic. The inner end of the body portion 4201 is bent to form the first connecting portion 4202, and the first connecting portion 4202 is connected to the actuator 410; the outer end of the body portion 4201 is bent to form the second connecting portion 4203, and the second connecting portion 4203 is connected to the actuator body 401.

[0133] In some embodiments, the first connecting portion 4202 is a sheet-like connecting portion, which can increase the connection area between the first connecting portion 4202 and the actuator 410, which not only ensures the stability of the connection, but also facilitates heat transfer and heat dissipation.

[0134] In some embodiments, the second connecting portion 4203 is a sheet-like connecting portion, which can increase the connection area between the second connecting portion 4203 and the exciter body 401, which not only helps to improve the stability of the connection, but also facilitates heat transfer and heat dissipation.

[0135] In some embodiments of this application, the exciter 400 uses a spring wave 420 to transfer the heat generated by the vibration of the actuator 410 to the exciter body 401 for heat dissipation. Thus, the heat generated by the actuator 410 can be dissipated not only through air cooling but also through the spring wave 420, which helps reduce the temperature of the actuator 410 and minimizes the impact of localized temperature on image display quality. Furthermore, by providing a first connecting portion 4202 to increase the connection area with the actuator 410 and a second connecting portion 4203 to increase the connection area with the exciter body 401, not only is the connection stability improved, but the heat dissipation effect is also enhanced.

[0136] In some embodiments of this application, the spindle 420 increases the heat conduction path of the actuator 410. The thermal conductivity of the spindle 420 is approximately 3 to 4 times that of copper, and the lateral thermal conductivity of the spindle 420 can reach 1000 W / m·K. Its efficiency is significantly better than air heat dissipation, which can reduce the temperature of the actuator 410, reduce the local temperature of the display device screen, avoid the appearance of "hot" spots on the screen, reduce the unevenness of screen brightness and color, and increase the maximum power and operational reliability of the exciter or speaker.

[0137] In some embodiments, the spring 420 is bonded to the actuator 410 and the actuator body 401 respectively. For example, the spring 420 is bonded to the actuator 410 and the actuator body 401 respectively with glue, and the connection method is simple and stable.

[0138] Reference Figure 14 and Figure 15 In some embodiments of this application, the spindle 420 has a heat-conducting layer 422, which facilitates heat transfer, thereby transferring the heat generated by the actuator 410 to the exciter body 401 for heat dissipation, reducing the impact of the heat from the actuator 410 on the image display quality. The heat-conducting layer 422 has a high thermal conductivity and can be made of metal or a graphite layer, etc.

[0139] Continue to refer to Figure 14 and Figure 15 In some possible implementations, the spindle 420 also includes a fiber layer 421, which is stacked with a thermally conductive layer 422. The fiber layer 421 includes, but is not limited to, a mesh fabric, fiberglass mesh fabric, etc.

[0140] One possible manufacturing process for Tamper 420 includes: on the one hand, using flake graphite as raw material, performing oxidation and slurry preparation processes to form graphene oxide slurry; then coating it into a base film, followed by sintering, reduction, and calendering processes to form a graphene film; on the other hand, using fiber mesh cloth as raw material, impregnating the fiber mesh cloth in resin to form a fiber film; finally, stacking the graphene film and the fiber film, embossing it into a wavy shape, and after curing, forming Tamper 420 with high thermal conductivity.

[0141] In some embodiments of this application, the spindle 420 utilizes a fiber layer 421 as a skeleton and is formed by combining the fiber layer 421 and the thermally conductive layer 422. It is not only elastic but also has high thermal conductivity, which facilitates the transfer of heat generated by the actuator 410 to the exciter body 401, thereby reducing the transfer of heat generated by the actuator 410 to the display panel.

[0142] The thermal conductivity of the spring wave 420 in some embodiments of this application is several times that of ordinary metal materials such as copper and aluminum, so that the heat of the actuator 410 can be mainly transferred to the exciter body 401 through the spring 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.

[0143] In some embodiments, refer to Figure 15 and Figure 16 There are multiple fiber layers 421 and thermal conductive layers 422, and the fiber layers 421 and thermal conductive layers 422 are adjacent to each other. In this way, the fiber layers 421 and thermal conductive layers 422 are stacked alternately.

[0144] In some embodiments, refer to Figure 16 The fiber layer 421 has two layers, and the thermally conductive layer 422 is located between the two fiber layers 421.

[0145] In other embodiments, reference is made to Figure 15 The thermal conductive layer 422 has two layers, with the fiber layer 421 located between the two thermal conductive layers 422.

[0146] In some other embodiments, the spinner 420 includes multiple fiber layers 421 and multiple thermal conductive layers 422, which are arranged in an alternating stacked manner.

[0147] In some embodiments of this application, the spindle 420 improves the structural strength and thermal conductivity of the spindle 420 by providing alternately stacked fiber layers 421 and thermally conductive layers 422.

[0148] Combination Figure 14In some embodiments, the thermally conductive layer 422 is in contact with the actuator body 401, which helps to improve heat transfer efficiency and thus improve the heat dissipation efficiency of the actuator 410. When the thermally conductive layer 422 is located on at least one surface of the spring 420, the surface is in direct contact with the actuator body 401; when the thermally conductive layer 422 is located in the inner layer of the spring 420, for example, when the thermally conductive layer 422 is located between two fiber layers 421, the fiber layer 421 of the spring 420 facing the actuator body 401 is provided with a notch, so that the thermally conductive layer 422 is arranged on the surface of the spring 420 and thus in contact with the actuator body 401. The fiber layer 421 corresponding to the second connecting portion 4203 of the spring 420 is provided with a notch, so that the thermally conductive layer 422 is arranged on the surface of the spring 420 and the surface is in contact with the actuator body 401.

[0149] Combination Figures 17 to 19 In some possible embodiments of this application, the thermally conductive layer 422 is a thermally conductive film 423, and the thermally conductive film 423 is provided with a plurality of through holes 4231. The thermally conductive film 423 is a film independent of the fiber layer 421, and a plurality of through holes 4231 are formed thereon. The through holes 4231 provided on the thermally conductive film 423 can be circular holes, elliptical holes, polygonal holes, irregularly shaped 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, a circular matrix, etc. Some embodiments of this application do not limit the number, shape and arrangement of the through holes 4231.

[0150] The thickness of the thermal conductive film 423 can be 100μm to 1000μm, such as 200μm, 300μm, 400μm, 500μm, 600μm, 700μm, 800μm, 900μm, etc.

[0151] The fiber layer 421 and the thermal conductive film 423 can both be annular, forming a bouncy wave 420 after embossing and cooling curing.

[0152] In some embodiments of this application, the spring wave 420 uses a fiber layer 421 as a skeleton, and a heat-conducting film 423 is provided with a plurality of through holes 4231, which improves the heat dissipation efficiency of the heat-conducting film 423; in addition, the heat-conducting film 423 can also be made to have a certain degree of flexibility.

[0153] In some examples, refer to Figure 19 The thermal conductive film 423 has two layers, and the fiber layer 421 is disposed between the two thermal conductive films 423.

[0154] In other examples, refer to Figure 17 and Figure 18 The fiber layer 421 has two layers, and the thermal conductive film 423 is disposed between the two fiber layers 421.

[0155] In some other examples, the thermal conductive film 423 and the fiber layer 421 are each provided in multiple layers, and the thermal conductive film 423 and the fiber layer 421 are arranged in alternating layers.

[0156] In some embodiments of this application, the spindle 420 improves its structural strength by providing multiple fiber layers 421 and improves its thermal conductivity by providing multiple thermal conductive films 423.

[0157] In this embodiment, the thermal conductive film 423 of the spindle 420 is in contact with the actuator body 401, which helps to improve the heat transfer efficiency and thus improve the heat dissipation efficiency of the actuator 410.

[0158] Refer again Figure 14 In some embodiments of this application, the actuator 400 further includes a pressure ring 440, which is configured to press the spring 420 against the actuator body 401. The pressure ring 440 can be a metal component to ensure heat transfer efficiency. The second connecting portion 4203 of the spring 420 is pressed against the actuator body 401 by the pressure ring 440, which improves the stability and tightness of the connection between the spring 420 and the actuator body 401, facilitating heat transfer.

[0159] For example, the pressure ring 440 can be bonded to the actuator body 401, and the pressure ring 440 can be bonded to the spring 420, making the connection simple and stable.

[0160] 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;

[0161] In some embodiments, the electromagnetic actuator includes a voice coil, wherein a magnetic component 450 is configured to generate a magnetic field in which the voice coil vibrates along its axial direction.

[0162] The magnetic assembly 450 includes a magnetic conductor 451 and a magnetic component 452, forming a magnetic air gap N between them. The magnetic conductor 451 is a cylindrical shape with an opening, and the magnetic component 452 is disposed on the bottom surface inside the magnetic conductor 451. A gap exists between the inner wall surface of the magnetic conductor 451 and the magnetic component 452, forming the magnetic air gap N. The magnetic assembly 450 is configured to provide a stable magnetic field within the magnetic air gap N.

[0163] One end of the voice coil is connected to the first lamp plate 210. A connecting structure 411 can also be provided between the voice coil and the first lamp plate 210 to increase the connection area between them and prevent them from detaching. The other end of the voice coil is inserted into the magnetic air gap N, and the voice coil is fixed to the exciter body 401 by a spring 420. As the magnetic field changes, the voice coil is subjected to force and reciprocates along its own axis. That is, when the exciter 400 is an electromagnetic exciter, the voice coil constitutes the actuator 410, and the end of the actuator 410 away from its vibration output end is located in the magnetic air gap N.

[0164] Thus, under the influence of the magnetic field, the electromagnetic force causes a high-frequency resonance in the voice coil, which directly vibrates the first lamp panel 210. The reaction force of the electromagnetic force causes the larger exciter 400 to produce a lower-frequency resonance. The exciter body 401 has no fixed support, but vibrates with the vibration of the driven first lamp panel 210. This is the biggest difference between the exciter housing of the OLED screen and the excitation method of fixing it to the bracket.

[0165] In some embodiments of this application, the actuator body 401 includes a magnetic component 450 and a housing 430. The housing 430 is configured to support the magnetic component 450 and to achieve resilient mounting of the actuator 400. The magnetic conductor 451 is fixedly connected to the housing 430. Specifically, in some embodiments of this application, the magnetic conductor 451 includes a U-shaped body and a connecting portion. The two ends of the opening of the U-shaped body are bent away from each other to form the connecting portion, which is connected to the housing 430.

[0166] The second connecting portion 4203 of the spring wave 420 is pressed onto the magnetic conductive member 451 by the pressure ring 440. For example, the second connecting portion 4203 is bonded to the magnetic conductive member 451, the pressure ring 440 is bonded to the magnetic conductive member 451, and the pressure ring 440 is bonded to the outer shell 430, and the connection method is simple and stable.

[0167] In some embodiments of this application, the actuator 400 reduces the width of the actuator 400 by connecting the spring 420 to the magnetic guide 451. Since the axial dimension of the actuator 410 is large, the stacking and pressing of the pressure ring 440, the magnetic guide 451 and the outer shell 430 will not affect the overall thickness of the actuator 400. This connection method of the spring 420 not only ensures the stability of the connection, but also makes the actuator 400 structure compact.

[0168] Continue to refer to Figure 14 Ventilation holes are provided at the portion of the magnetic conductor 451 that contacts the spring 420 to improve the heat dissipation efficiency of the magnetic conductor 451 and increase the heat dissipation of the actuator 410 through the spring 420. The ventilation holes can be circular holes, and some embodiments of this application do not limit the shape, number, or arrangement of the ventilation holes.

[0169] In some embodiments, a vent is provided at the portion of the housing 430 that contacts the magnetic conductor 451. The vent can be opposite to the ventilation hole to further improve heat dissipation efficiency. The vent can be a circular hole, and some embodiments of this application do not limit the shape, number, or arrangement of the vent.

[0170] Combination Figure 20 In some embodiments, the housing 430 of the actuator 400 is connected to the back plate 500 via a fixing pin 480, which may be perpendicular to the back plate 500. An elastic pad 460 is provided on the housing 430, and the housing 430 is connected to the back plate 500 via the elastic pad 460.

[0171] The elastic pad 460 can be made of silicone, rubber, etc. The elastic pad 460 can be sleeved on the outside of the fixing pin 480. The outer shell 430 is provided with a mating hole, and the outer wall of the elastic pad 460 is provided with a snap-fit ​​groove that snaps into the outer shell 430. In this way, there are partial elastic pads 460 on both sides of the mating 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.

[0172] The elastic force of the elastic pad 460 is parallel to the thickness direction of the display device 10, so that the housing 430 and the back plate 500 have a variable relative position. That is, during the vibration of the exciter 400, the housing 430 can reciprocate relative to the back plate 500. At this time, the exciter 400 also constitutes an approximately inertial drive to drive the first lamp plate 210 to vibrate, avoiding the impact on the frequency response of the display device 10 due to the relative fixation of the housing 430 and the back plate 500.

[0173] Reference Figure 21 In some other embodiments, a damping block 470 is provided at the end of the housing 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 panel 210 facing the back plate 500. In this way, there is a large relative movement range between the housing 430 and the first lamp panel 210, which is beneficial to enable the exciter 400 to drive the display panel 100 to vibrate in an inertial drive manner.

[0174] Thus, when the exciter 400 is working, the actuator 410 can generate a high-frequency vibration and drive the first lamp plate 210 to vibrate. Through the reaction force of the actuator 410, the outer shell 430 can drive the first lamp plate 210 to vibrate with a low-frequency vibration. That is, the outer shell 430 vibrates with the vibration of the first lamp plate 210. The exciter 400 constitutes an inertial drive mode to drive the first lamp plate 210 to vibrate.

[0175] Combination Figure 22In some embodiments, the display panel 100 includes a display film layer 120 and a diffusion film 113. The display film layer 120 is located on the side of the diffusion film 113 facing away from the backlight assembly 200. The display film layer 120 can be a liquid crystal film layer. A first sealing structure 610 is provided at the edge position between the diffusion film 113 and the display film layer 120. The first sealing structure 610 can be annular, and the diffusion film 113 and the display film layer 120 form a cavity M through the first sealing structure 610. The support member 300 is interference-fitted between the diffusion film 113 and the first lamp plate 210.

[0176] The first sealing structure 610 can be an optical adhesive, and its arrangement makes the air inside the cavity M viscous. The cavity M is closed, meaning that the air inside the cavity M does not flow with the outside air. The air inside the cavity M can be equivalent to a damping spring, configured to transmit the vibration between the diffusion film 113 and the display film layer 120.

[0177] The display device of some embodiments of this application employs a combination of direct drive and indirect air drive to make the display panel 100 vibrate and generate sound. The vibration transmission between the exciter 400, the first lamp plate 210, and the diffuser film 113 is direct drive, ensuring efficient vibration transmission. The vibration transmission between the diffuser film 113 and the display film layer 120 is viscous air gap transmission, which is indirect drive. Viscous air gap transmission of vibration allows the display panel 100 to be subjected to uniform force across its entire plane, and the actual vibration area of ​​the display panel 100 is larger than that of related technologies that only have direct drive. Thus, the display device of this embodiment allows the display panel to achieve low-frequency sound generation performance with a small amplitude (e.g., 0.3 mm), overcoming the shortcoming of related technologies where the display panel cannot be driven with large amplitude.

[0178] Combination 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 called an array substrate), and a liquid crystal (LC) layer, with the liquid crystal layer located between the color filter substrate and the array substrate. The TFT substrate has data lines and scan lines. The orientation of the liquid crystal molecules is controlled by whether the data lines and scan lines are energized, so that the backlight light is emitted through the color filter substrate to generate a preset color image.

[0179] In some embodiments, the display device further includes an optical film assembly 110 disposed on the side of the display film layer 120 facing the lamp panel.

[0180] Depending on the type of light emitted by the lamp panel, the optical film assembly 110 can be of different types. For example, when the lamp panel 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 surface of the lamp panel where the light source is located.

[0181] When the light panel 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 disposed on the front side of the light panel and is configured to uniformly mix the light from multiple light panels, that is, to convert a point light panel into a surface light panel. The fluorescent film 112 converts the light emitted by the light panel into white light, thus not limiting the color of the light emitted by the light panel; the light panel can emit blue light or purple light. The brightness enhancement film 111 is configured to increase the brightness of the light. It is understood that when the light panel 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 using the example of the optical film assembly 110 including a diffusion film 113, a fluorescent film 112, and a brightness enhancement film 111.

[0182] In some embodiments, the display film layer 120 and the optical film assembly 110 can be bonded together in pairs, for example, by photosensitive adhesive (UV adhesive), foam, double-sided tape, etc. That is, the display panel 100 and the optical film assembly 110 can be bonded together as a whole. At this time, the vibration force transmitted by the exciter 400 to the first lamp plate 210 is transmitted to the display film layer 120 through the optical film assembly 110.

[0183] In other embodiments, a gas gap is present between the display film 120 and the brightness enhancement film 111; and / or, a gas gap is present between the brightness enhancement film 111 and the fluorescent film 112; and / or, a gas gap is present between the fluorescent film 112 and the diffusion film 113, wherein the gas gaps are in a closed state, forming the cavity M of the above embodiments. That is, the cavity M can be formed between the display film 120 and the brightness enhancement film 111, the cavity M can also be formed between the brightness enhancement film 111 and the fluorescent film 112, the cavity M can also be formed between the fluorescent film 112 and the diffusion film 113; or, the cavity M includes at least two of the above three types of gas gaps.

[0184] Combination Figures 20 to 22 The display device 10 includes a second sealing structure 620 with adhesive properties. The second sealing structure 620 is made of double-sided adhesive or foam, etc. The second sealing structure 620 extends along the edge of the backlight assembly. The optical film assembly 110 is bonded and fixed to the backlight assembly through the second sealing structure 620, that is, the diffusion film 113 is bonded and fixed to the backlight assembly 200 through the second sealing structure 620. This allows the backlight assembly to also support the display panel 100.

[0185] A support member 300 is provided between the first lamp panel 210 and the display panel 100 to transmit vibration force. The cross-sectional shape of the support member 300 (which is perpendicular to the display device) can be rectangular or cylindrical; the cross-sectional shape of the support member 300 can also be conical, trapezoidal, dumbbell-shaped or other shapes, etc.

[0186] In some embodiments of this application, the support member 300 is interference-fitted between the display panel 100 and the first lamp plate 210. That is, the two ends of the support member 300 can be combined with the display panel 100 and the first lamp plate 210 by an interference fit design. In other words, the dimension of the support member 300 along the thickness direction of the display device is greater than the spacing design dimension between the display panel 100 and the first lamp plate 210.

[0187] In some embodiments, the support member 300 can be connected to the first lamp panel 210 by a first adhesive structure, such as UV adhesive or double-sided adhesive, to prevent the support member 300 from moving relative to the first lamp panel 210.

[0188] like Figure 23 As shown, the support member 300 includes a rigid part 302 and a buffer part 301 connected to each other. The rigid part 302 is connected to the first lamp panel 210, and the buffer part 301 is connected to the display panel 100. The height of the rigid part 302 is greater than the height of the light source 240 of the first lamp panel 210 protruding from the panel body 230. This ensures that the light source 240 will not come into contact with the display panel 100 and cause wear when the support member 300 is under pressure.

[0189] The rigid part 302 can be a rigid 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 insert to form the buffer part 301 by injection molding on its outer side. The rigid part 302 can be bonded to the first lamp panel 210, and the connection method is simple and reliable.

[0190] The rigid part 302 can be a metal part made of a weldable material. It is connected to the buffer part 301 by injection molding, mechanical fitting or bonding. The rigid part 302 is welded to the first lamp plate 210, which is firmly installed and facilitates batch automatic assembly.

[0191] In some embodiments of this application, the support member 300 is provided with a combination of a rigid part 302 and a buffer part 301 connected together. The buffer part 301 can ensure the vibration buffering effect, and the rigid part 302 can ensure that the light source 240 will not come into contact with the display panel 100 and cause wear when the support member 300 is under pressure, thus ensuring that the vibration transmission effect does not change with temperature.

[0192] 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 suction cup structures. The two ends of the support member 300 are fixedly connected to the first lamp board 210 and the display panel 100 respectively through the suction cup structures. The process is simple to implement.

[0193] 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 lamp panel 210 via the first adhesive structure, and the other end is fixedly connected to the display panel 100 via a suction cup structure. Thus, the support member 300 can be fixed by double-sided adhesive or by mechanical fixation, thereby achieving vibration linkage between the first lamp panel 210 and the display panel 100 and improving vibration transmission efficiency. However, double-sided adhesive or mechanical fixation has the disadvantage of complex manufacturing processes. The suction cup adsorption solution improves the feasibility of the solution.

[0194] The first lamp board 210, as the vibration transmission component, needs to possess high strength and low mass characteristics to avoid affecting the mid-to-high frequency transmission efficiency due to its own segmented vibration during vibration transmission. Therefore, in combination with... Figure 24 The first lamp panel 21 has a reinforcing structure 250 on the side opposite to the display panel 100. The structural strength of the backlight assembly is improved by the reverse support of the display panel, ensuring the efficiency of vibration energy transmission.

[0195] In some embodiments, the reinforcing structure 250 may be annular, for example, the reinforcing structure 250 surrounds the edge of the first lamp panel 210, such as... Figure 24 As shown. The annular reinforcing structure 250 can be a circular ring or a closed ring structure of other shapes. The actuator 400 can be disposed at the center of the annular reinforcing structure 250.

[0196] Multiple annular reinforcing structures 250 can be provided. Along the direction away from the exciter 400, the radii of the multiple reinforcing structures 250 gradually increase, so that the multiple reinforcing structures 250 are nested in sequence.

[0197] The support member 300 is positioned at the corresponding location of the reinforcing structure 250, and the reverse pressure of the display panel further suppresses the amplitude of segmented vibration to ensure vibration transmission efficiency.

[0198] The display device 10 also includes a rear cover (not shown), which is located on the side of the back panel 500 opposite to the display panel 100, i.e., the rear cover is positioned behind the back panel 500. The controller, electrical connection cables, etc., of the display device 10 can be located between the back panel 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.

[0199] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0200] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that, include: The display panel is configured to display image information; A backlight assembly is located on one side of the display panel; The backlight assembly includes: multiple lamp panels; An exciter, wherein the vibration output end of the exciter is connected to a portion of the multiple lamp panels and drives the connected lamp panels to vibrate, such that the lamp panels connected to the exciter and the lamp panels not connected to the exciter are spaced apart along the vibration direction; A support member is provided between the lamp plate and the display panel, which are connected to the actuator.

2. The display device according to claim 1, characterized in that, The plurality of light panels includes: a first light panel and a second light panel, wherein the first light panel is connected to the vibration output end of the exciter, and the support member is supported between the first light panel and the display panel; The display device also includes a back plate, which is supported on the side of the second lamp plate opposite to the display panel.

3. The display device according to claim 2, characterized in that, The first lamp panel and the back plate are elastically connected by a connecting component; or, the first lamp panel and the back plate are spaced apart, and the actuator is configured to support the first lamp panel.

4. The display device according to claim 3, characterized in that, The two ends of the connecting component are respectively bonded to the first lamp plate and the back plate; or, The connecting component includes two connecting bodies and an elastic part. The two connecting bodies are respectively fixed to the back plate and the first lamp plate. There is a gap between the two connecting bodies, and the elastic part is connected between the two connecting bodies.

5. The display device according to claim 2, characterized in that, The actuator is provided in multiple ways, wherein multiple actuators are disposed on the edge of the first light panel, and at least one actuator is disposed at the center of the first light panel.

6. The display device according to claim 2, characterized in that, The second lamp panel is rigidly connected to the back panel.

7. The display device according to any one of claims 2-6, characterized in that, The backlight assembly also includes a sound-emitting plate, which is fixed to the side of the first lamp plate away from the display panel; the vibration output end of the exciter is connected to the sound-emitting plate.

8. The display device according to any one of claims 2-6, characterized in that, The display panel includes a display film layer and a diffusion film, the display film layer being located on the side of the diffusion film facing away from the backlight assembly; a first sealing structure is provided at the edge position between the diffusion film and the display film layer, and the diffusion film and the display film layer form a cavity through the first sealing structure; The support member is interference-fitted between the diffusion film and the first lamp plate.

9. The display device according to any one of claims 2-6, characterized in that, The first lamp panel includes a panel body and a light source disposed on the panel body; The support member includes a rigid part and a buffer part connected together. The rigid part is connected to the first lamp panel, and the buffer part is connected to the display panel. The height of the rigid part is greater than the height of the light source protruding from the panel body.

10. The display device according to any one of claims 2-6, characterized in that, The first lamp panel has a reinforcing structure on the side opposite to the display panel.

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