Display device

Abstract

The utility model provides a display device, relates to the technical field of display, and is used for solving the technical problem of poor sound field effect of a self-sounding display screen caused by noise generated by resonance of a circuit board in the related art. The display device comprises a display panel, an exciter, a lamp panel, the circuit board, a first back plate and a second back plate, the exciter drives the display panel to vibrate through the lamp panel, the first backboard is configured to fix the exciter, and the second backboard is configured to fix the circuit board; and the first back plate and the second back plate are flexibly connected. By arranging the first back plate and the second back plate, the contact area between the circuit board and the back plates is reduced, and the counter-acting force of the exciter is prevented from being directly conducted to the circuit board; meanwhile, through flexible connection between the first back plate and the second back plate, the acting force conducted to the circuit board is further attenuated, the resonance noise of the circuit board is reduced, and the sound field effect of the display screen is improved.

Description

Technical Field

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

[0002] An exciter is installed on the display device to vibrate the display panel, thereby enabling the screen to emit sound. In other words, the display panel has both display and sound functions, achieving a unified audiovisual effect.

[0003] When the exciter excites the display panel to vibrate, the reaction force of the exciter is transmitted to the circuit board fixed on the back plate through the back plate. This can easily cause the circuit board and its components to resonate and generate noise, which not only affects the structural stability of the display device, but also affects the acoustic effect. Utility Model Content

[0004] In view of the above problems, some embodiments of this application provide a display device to solve the problem of circuit board resonance emitting noise that affects the acoustic performance of the display device in the related art.

[0005] To address the aforementioned technical problems, some embodiments of this application provide the following technical solutions:

[0006] Some embodiments of this application provide a display device, which includes:

[0007] The display panel is configured to display image information;

[0008] The light panel is located on the back side of the display panel;

[0009] An exciter is connected to the lamp panel and drives the lamp panel to vibrate;

[0010] The circuit board is configured to control the light panel to emit light and to control the exciter to vibrate;

[0011] A first backplate, configured to fix the actuator;

[0012] A second backplate is disposed opposite to the circuit board and is configured to fix the circuit board; the second backplate and the first backplate are flexibly connected.

[0013] In some embodiments, the display device further includes a vibration damping connector located on the back of the back plate, and at least a portion of the structure of the vibration damping connector is a flexible portion, with both ends of the vibration damping connector being fixedly connected to the first back plate and the second back plate, respectively.

[0014] In some embodiments, the vibration damping connector includes a flexible body having a first slot and a second slot; the side of the first back plate facing the flexible body is embedded in the first slot, and the side of the second back plate facing the vibration damping connector is embedded in the second slot.

[0015] In some embodiments, the first back plate forms a first connecting structure at its edge toward the vibration damping connector, and the first connecting structure is embedded in the first slot; the second back plate has a second connecting structure at its edge toward the vibration damping connector, and the second connecting structure is spaced apart from the first connecting structure; the second connecting structure is embedded in the second slot.

[0016] In some embodiments, the first connection structure includes a first connection portion, the second connection structure includes a second connection portion, the second connection portion and the first connection portion are opposite to each other and spaced apart along the thickness direction of the display panel; the first connection portion is embedded in the first slot; the second connection portion is embedded in the second slot.

[0017] In some embodiments, the first slot and the second slot are both annular grooves provided on the outer peripheral wall of the flexible body; the first connecting part is provided with a first mounting through hole, and the first connecting part is embedded in the first slot through the first mounting through hole; the second connecting part is provided with a second mounting through hole, and the second connecting part is embedded in the second slot through the second mounting through hole.

[0018] In some embodiments, the vibration damping connector further includes a fastener, the flexible body is provided with a fastening hole, the second slot is located outside the fastening hole, and the fastener is fixed in the fastening hole.

[0019] In some embodiments, the fastening hole is a through hole penetrating the vibration damping connector.

[0020] In some embodiments, the cross-sectional area of ​​the flexible body gradually decreases from its first end toward its second end, and the first slot is disposed at the end of the flexible body with a larger cross-sectional area, while the second slot is disposed at the end of the flexible body with a smaller cross-sectional area.

[0021] In some embodiments, a fixing pin is provided on the first back plate, and an elastic pad is provided on the actuator, the elastic pad being fixed to the first back plate by the fixing pin.

[0022] Some embodiments of this application provide a display device, including a display panel, a lamp board, an exciter, a circuit board, a first back plate, and a second back plate. The display panel is configured to display image information, the lamp board is located on the back side of the display panel, and the exciter is connected to the lamp board and drives it to vibrate. The first back plate is configured to fix the exciter, and the second back plate is configured to fix the circuit board. By dividing the complete back plate into a first back plate and a second back plate, the circuit board is only connected to the second back plate, reducing the contact area between the circuit board and the back plate and preventing the reaction force of the exciter from being directly transmitted to the circuit board. Simultaneously, a vibration-damping connector flexibly connects the first and second back plates, further attenuating the reaction force of the exciter transmitted to the circuit board, reducing resonance noise on the circuit board, and extending the frequency response of the display panel's sound emission to the full frequency range, thereby improving the acoustic effect of vibration-generated sound in the display panel. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in some embodiments of this application or in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram illustrating an operational scenario between a display device and a control device, as shown in some embodiments of this application;

[0025] Figure 2 This is a configuration block diagram of a display device shown in some embodiments of this application;

[0026] Figure 3 This is a cross-sectional structural diagram of a display device provided in some embodiments of this application;

[0027] Figure 4 This is a schematic diagram of the structure of a vibration damping connector for a display device provided in some embodiments of this application;

[0028] Figure 5 This is a schematic diagram of the structure of a vibration damping connector for a display device provided in some embodiments of this application;

[0029] Figure 6 This is a three-dimensional structural diagram of a display device provided in some embodiments of this application;

[0030] Figure 7 This is a three-dimensional structural diagram of a display device provided in some embodiments of this application;

[0031] Figure 8 This is a schematic diagram of the rear of a display device provided in some embodiments of this application;

[0032] Figure 9 The present application provides schematic diagrams illustrating the structure of the exciter in some embodiments.

[0033] Figure 10 The following are schematic diagrams illustrating the structure of a thermally conductive elastic wave, as shown in some embodiments of this application;

[0034] Figure 11 The following are schematic diagrams illustrating the structure of a thermally conductive elastic wave, as shown in some embodiments of this application;

[0035] Figure 12 This is a cross-sectional schematic diagram of a display device shown in some embodiments of this application;

[0036] Figure 13 A schematic diagram showing the arrangement of vibration support members provided in some embodiments of this application;

[0037] Figure 14 This is a schematic diagram showing the state of the elastic support member in some embodiments of this application;

[0038] Figure 15 This is a cross-sectional schematic diagram of a display device shown in some embodiments of this application;

[0039] Figure 16 This is a cross-sectional schematic diagram of a display device shown in some embodiments of this application;

[0040] Figure 17 This is a cross-sectional schematic diagram of a display device shown in some embodiments of this application.

[0041] Figure label:

[0042] 10: Display devices; 20: Smart devices; 30: Servers;

[0043] 100: Display panel; 110: Optical film assembly; 111: Brightness enhancement film; 112: Fluorescent film; 113: Diffuse film; 120: Display film layer;

[0044] 210: Light board;

[0045] 300: Support component; 301: Elastic part; 302: Rigid part; 310: First adhesive structure; 320: Suction cup structure;

[0046] 400: Actuator; 401: Actuator body; 410: Actuator element; 411: Third connection structure; 420: Sponge; 421: Fiber layer; 422: Thermal conductive layer; 423: Thermal conductive film; 4231: Through hole; 430: Housing; 440: Pressure ring; 450: Magnetic component; 451: Magnetic conductor; 452: Magnetic component; 460: Elastic pad; 480: Fixing pin;

[0047] 500: Back plate; 510: First back plate; 511: First connecting structure; 5111: First bending portion; 5112: First connecting portion; 520: Second back plate; 521: Second connecting structure; 5211: Second bending portion; 5212: Second connecting portion;

[0048] 800: Circuit board; 810: Vibration damping connector; 8101: Flexible body; 811: First slot; 812: Second slot; 813: Fastening hole; 8131: First hole section; 8132: Second hole section; 814: Fastener; 8141: Head; 8142: Tail; 8143: Middle section;

[0049] 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;

[0050] M: cavity; N: magnetic air gap. Detailed Implementation

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] An exciter is installed on the display device to vibrate the display panel, thereby enabling the screen to emit sound. In other words, the display panel has both display and sound functions, achieving a unified audiovisual effect.

[0058] In related technologies, self-sounding displays have the problem of poor sound field effect. After research by technicians, it was found that the reason for this problem is that when the exciter excites the display panel to vibrate, the reaction force of the exciter is transmitted to the circuit board fixed on the back plate through the back plate. This can easily cause the circuit board and its components to resonate and produce noise, especially at low frequencies when the resonance energy is large and the amplitude is large.

[0059] To address the aforementioned technical problems, some embodiments of this application provide a display device that, by dividing a complete backplate into a first backplate and a second backplate, allows the circuit board to be connected only to the second backplate, reducing the contact area between the circuit board and the backplate and preventing the reaction force of the exciter from being directly transmitted to the circuit board. Simultaneously, a vibration-damping connector connects the first and second backplates, further attenuating the reaction force of the exciter transmitted to the circuit board, reducing resonance noise on the circuit board, and extending the frequency response of the display screen's sound emission to the full frequency range, thereby improving the sound field effect of the display screen.

[0060] 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 is 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 a Mini-LED display device or other LCD device. 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 can maintain the gap M 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 the risk of collision noise and abrasion.

[0061] To make the above-mentioned objects, features, and advantages of some embodiments of this application more apparent and understandable, 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0062] The display device provided in this application can have various implementation forms, for example, it can be a television, a smart television, etc.

[0063] 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.

[0064] Figure 1 This 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 1As 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.

[0065] Figure 2 This is a schematic diagram of the device structure shown in an example, such as... Figure 2 In some embodiments, the display device 10 includes a tuner / demodulator 901; the tuner / demodulator 901 receives broadcast television signals via wired or wireless means, and demodulates audio and video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals.

[0066] In some embodiments, the display device 10 includes a communicator 902; the communicator 902 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.

[0067] In some embodiments, the display device 10 includes a detector 903; the detector 903 is configured to acquire signals from the external environment or interactions with the outside world. For example, the detector 903 includes a light receiver configured to acquire a sensor of ambient light intensity; or, the detector 903 includes an image acquisition device, such as a camera, which can be configured to acquire external environmental scenes, user attributes, or user interaction gestures; or, the detector 903 includes a sound acquisition device, such as a microphone, configured to receive external sounds.

[0068] 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, 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.

[0069] In some embodiments, the display device 10 includes a controller 905;

[0070] In some embodiments, the display device 10 includes a display 906; the display 906 includes a display screen component configured to present an image, a driving component for driving image display, a component configured to receive image signals output from a controller, and a user interface for displaying video content, image content, a menu control interface, and a user control UI. 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.

[0071] In some embodiments, the display device 10 includes an audio output interface 907;

[0072] In some embodiments, the display device 10 includes a memory 908;

[0073] In some embodiments, the display device 10 includes a power supply 909;

[0074] In some embodiments, the display device 10 includes at least one of the user interfaces 910. The user interface 910 may be configured to receive control signals from a control device 900 (e.g., an infrared remote control).

[0075] In some embodiments, the controller includes a processor;

[0076] In some embodiments, the controller includes a video processor;

[0077] In some embodiments, the controller includes an audio processor;

[0078] In some embodiments, the controller includes a graphics processor;

[0079] In some embodiments, the controller includes RAM;

[0080] In some embodiments, the controller includes a ROM;

[0081] In some embodiments, the controller includes a first interface to an nth interface configured as input / output signals.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] Reference Figure 3 This application provides a display device 10 in some embodiments, 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.

[0088] Combination Figure 3 In some embodiments of this application, the display device 10 includes a display panel 100; the display panel 100 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.

[0089] In some embodiments, the display device 10 includes a lamp panel 210; the lamp panel 210 is configured to provide backlighting for the display panel 100.

[0090] In some embodiments, the display device 10 includes an exciter 400; the exciter 400 is disposed on the side of the lamp plate 210 opposite to the display panel 100, and the exciter 400 provides vibration force for the vibration sound generation of the display panel 100.

[0091] In some embodiments, the display device 10 includes a circuit board 800;

[0092] In some embodiments, the display device 10 includes a back plate 500; the back plate 500 is disposed on the side of the lamp plate 210 opposite to the display panel 100, that is, the back plate 500 is disposed on the rear side of the lamp plate 210 and is configured to support the lamp plate 210 and the display panel 100. The back plate 500 may be made of aluminum alloy, steel, etc., to provide effective support.

[0093] In some embodiments, the display device 10 includes other electrical components disposed on the back of the display panel 100.

[0094] In some embodiments, the lamp board 210 is configured to generate backlight, and the display panel 100 can modulate the backlight as needed to display different images. The lamp board 210 includes a board body and a light source disposed on the board body, with the light source located on the side of the board body facing the display panel 100. The board body can be an aluminum plate, a printed circuit board (PCB), etc. The light source can be a light-emitting diode (LED), a mini-light-emitting diode (Mini LED), or a micro-light-emitting diode (Micro LED). Multiple light sources can be disposed at intervals on the board body.

[0095] In some embodiments, a cavity M is formed between the lamp panel 210 and the display panel 100. The cavity M can be a sealed cavity. The gas in the cavity M can be equivalent to a damping spring, which has the function of effectively transmitting vibration energy. In order to improve the vibration transmission efficiency, some embodiments of this application provide a support member 300 between the lamp panel 210 and the display panel 100 to transmit the vibration of the lamp panel 210 to the display panel 100, so that the display panel 100 vibrates and produces sound.

[0096] Specifically, the display device 10 can be a liquid crystal display device. The display device 10 has a backlight module, which can be a direct-lit backlight module. In this case, the backlight module has a lamp panel to provide backlight to the display panel through the light source of the lamp panel. When the lamp panel vibrates, it compresses the gas in the cavity M and transmits the vibration to the display panel through the cavity M, thereby driving the display panel to vibrate. The display panel emits sound through the sound waves emitted by the vibration, so that the display panel can both display images and replace the speaker to produce sound.

[0097] The size of the gap in cavity M can be determined based on the light source of the lamp panel, for example, the gap size is related to the size of the light source. Since light sources such as sub-millimeter light-emitting diodes (e.g., Mini-LEDs) have a more compact size, the gap between the backlight panel and the LCD panel can be smaller, thereby reducing the thickness of cavity M and improving its vibration transmission effect. Therefore, in this embodiment, the light source of the backlight module is described using a sub-millimeter light-emitting diode (Mini-LED).

[0098] For example, the gap of cavity M can be 0.3mm to 10mm, with a maximum gap of 10mm. Alternatively, the gap can be 0.3mm or 1mm. For instance, when the gap of cavity M is 1mm, the thickness of cavity M is relatively small, which can improve the transmission efficiency of the vibration force output by the exciter. Or, when the gap of cavity M is 0.3mm, the distance between the exciter 400 and the display panel 100 is closer, resulting in stronger vibration and better sound production. When the gap of cavity M is 10mm, the thickness of cavity M is relatively large, which can prevent the display panel and the light source from colliding at a certain position during vibration. Specifically, the gap of cavity M can be 0.3mm to 1mm, 1mm to 2mm, 2mm to 3mm, 3mm to 4mm, 4mm to 5mm, 5mm to 6mm, 6mm to 7mm, 7mm to 8mm, 8mm to 9mm, or 9mm to 10mm. For example, the gap of cavity M can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, etc. It should be noted that the numerical values ​​and ranges involved in some embodiments of this application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors, which can be considered negligible by those skilled in the art.

[0099] The exciter 400 serves as a vibration source and may include an exciter body 401 and an actuator 410. The actuator 410 is connected to the lamp panel 210, so that the vibration generated by the exciter 400 can be transmitted to the display panel 100 through the lamp panel 210 and the support member 300.

[0100] The exciter 400 can be an electromagnetic exciter or a piezoelectric ceramic to excite the display panel 100 to resonate, thereby emitting sound. While the exciter 400 excites the display panel 100 to resonate, the reaction force of the exciter 400 will be transmitted to the circuit board 800, causing the circuit board 800 and the components on the circuit board 800 to resonate and emit noise. The display device of some embodiments of this application can reduce the vibration of the circuit board 800.

[0101] The backplate 500 is constructed on the back of the display panel 100. The backplate 500 is fixedly connected to the actuator 400 and the circuit board 800. The backplate 500 is configured to fix the actuator 400 and the circuit board 800.

[0102] The circuit board 800 is configured to control the light panel 210 to emit light and to control the exciter 400 to vibrate.

[0103] The back panel 500 is at least partially parallel to the display panel 100. In some embodiments of this application, the back panel 500 includes a first back panel 510 and a second back panel 520.

[0104] The first backplate 510 is configured to connect to the actuator body 401 to mount and secure the actuator 400, ensuring that the actuator 400 can operate stably.

[0105] The second backplate 520 is located near the circuit board 800. At least a portion of the second backplate 520 is parallel to the circuit board 800. The second backplate 520 is configured to be fixedly connected to the circuit board 800 for mounting and securing the circuit board 800.

[0106] In other words, some embodiments of this application divide the complete backplate 500 into a first backplate 510 and a second backplate 520, so that the circuit board 800 is only connected to the second backplate 520, thereby reducing the contact area between the circuit board 800 and the backplate 500, preventing the reaction force of the exciter 400 from being directly transmitted to the circuit board 800, and reducing the resonance noise of the circuit board 800.

[0107] The first backplate 510 and the second backplate 520 are flexibly connected, so that the first backplate 510 and the second backplate 520 are connected in sequence to form a "hard-soft-hard" structural component. The boundary of the structural component can reflect and isolate unwanted resonant energy, further attenuate the vibration transmitted to the circuit board 800, and reduce the mechanical vibration of the circuit board 800 and the TV screen.

[0108] In other words, the first backplate 510 and the second backplate 520 are two independent backplates that do not affect each other; this makes the circuit board 800, which is prone to vibration, an independent structural component, preventing the reaction force of the exciter 400 from being transmitted to the circuit board 800, thereby reducing the resonance noise of the circuit board 800.

[0109] In some embodiments, the display device further includes a vibration damping connector 810, which is constructed on the back of the back plate 500, and the two ends of the vibration damping connector 810 are fixedly connected to the first back plate 510 and the second back plate 520, respectively.

[0110] At least a portion of the structure of the vibration damping connector 810 is a flexible part, such that the first back plate 510, the vibration damping connector 810 and the second back plate 520 are sequentially arranged to form a "hard-soft-hard" structural component. The boundary of this structural component can reflect and isolate unwanted resonant energy, further attenuating the vibration transmitted to the circuit board 800 and reducing the mechanical vibration of the circuit board 800 and the TV screen.

[0111] In other words, some embodiments of this application also connect the first back plate 510 and the second back plate 520 through the vibration damping connector 810, further attenuating the reaction force of the exciter 400 transmitted to the circuit board 800; and also ensuring the connection stability of the first back plate 510 and the second back plate 520.

[0112] The display device provided in some embodiments of this application includes a back plate 500 and a vibration damping connector 810. Both the back plate 500 and the vibration damping connector 810 are constructed on the back of the display panel 100. The back plate 500 is parallel to the display panel 100. The back plate 500 includes a first back plate 510 and a second back plate 520. The first back plate 510 is configured to be connected to the exciter body 401. The second back plate 520 is close to the circuit board 800 and is configured to be fixedly connected to the circuit board 800. At least a portion of the structure of the vibration damping connector 810 is a flexible part. Both ends of the vibration damping connector 810 are fixedly connected to the first back plate 510 and the second back plate 520, respectively. By dividing the complete backplate 500 into a first backplate 510 and a second backplate 520, the circuit board 800 is only connected to the second backplate 520, reducing the contact area between the circuit board 800 and the backplate 500 and preventing the reaction force of the exciter 400 from being directly transmitted to the circuit board 800. At the same time, the first backplate 510 and the second backplate 520 are connected by a vibration damping connector 810, which further attenuates the reaction force of the exciter 400 transmitted to the circuit board 800, reduces the resonance noise of the circuit board 800, and expands the frequency response of the display screen to the full frequency range, thereby improving the sound field effect of the display panel.

[0113] Continue to refer to Figures 3 to 5In some embodiments of this application, the vibration damping connector 810 includes a flexible body 8101, which has a first slot 811 and a second slot 812. The edge of a first back plate 510 facing the vibration damping connector 810 matches the first slot 811 to embed the edge of the first back plate 510 facing the vibration damping connector 810 into the first slot 811. The edge of a second back plate 520 near the vibration damping connector 810 matches the second slot 812 to embed the edge of the second back plate 520 near the vibration damping connector 810 into the second slot 812, so that both the first back plate 510 and the second back plate 520 are fixedly connected to the vibration damping connector 810.

[0114] The snap-fit ​​structure between the first back plate 510 and the second back plate 520 and the first slot 811 and the second slot 812 is simple and easy to install.

[0115] In some of the above embodiments, the first back plate 510 and the second back plate 520 can be along a first direction (i.e. Figure 3 The first backplate 510 and the second backplate 520 are arranged in sequence along the first direction (in the horizontal direction shown), and at least a portion of the first backplate 510 and at least a portion of the second backplate 520 are arranged in the same plane along the first direction; that is, at least a portion of the first backplate 510 and at least a portion of the second backplate 520 are parallel and aligned to ensure the compactness of the overall structure of the display device.

[0116] The first card slot 811 and the second card slot 812 can be along the second direction (that is...) Figures 3 to 5 The first back plate 510 has a first connecting structure 511 at its edge facing the vibration damping connector 810. The first connecting structure 511 matches the first slot 811, so that the first connecting structure 511 is embedded in the first slot 811. The second back plate 520 has a second connecting structure 521 at its edge facing the vibration damping connector 810. The second connecting structure 521 matches the second slot 812, so that the second connecting structure 521 is embedded in the second slot 812. The first connecting structure 511 and the second connecting structure 521 are spaced apart, and the flexible body 8101 is connected within this space.

[0117] Because the first card slot 811 and the second card slot 812 are along the second direction (that is...) Figures 3 to 5The vertical direction shown in the figure (the second direction is perpendicular to the first direction) is spaced apart, and the first back plate 510 and the second back plate 520 are parallel and aligned, indicating that the edges of the first back plate 510 and the second back plate 520 cannot be directly embedded into the first slot 811 and the second slot 812. Therefore, the edge of the first back plate 510 is bent towards the first slot 811 to form the first connecting structure 511, and the edge of the second back plate 520 is bent towards the second slot 812 to form the second connecting structure 521, ensuring that the first back plate 510 and the second back plate 520 are both fixedly connected to the vibration damping connector 810.

[0118] Meanwhile, in some of the above embodiments, the presence of the first connection structure 511 and the second connection structure 521 ensures that the portion of the first back plate 510 connected to the exciter body 401 and the portion of the second back plate 520 connected to the circuit board 800 do not directly contact the vibration damping connector 810, which can further attenuate the force transmission between the first back plate 510 and the second back plate 520, thereby achieving the purpose of attenuating the reaction force of the exciter 400 transmitted to the circuit board 800.

[0119] refer to Figure 6 and Figure 7 Unlike some of the embodiments described above, the first back plate 510 and the second back plate 520 are along the second direction ( Figure 6 and Figure 7 The back panel 510 and the second back panel 520 are arranged vertically and alternately, such that at least a portion of the first back panel 510 and at least a portion of the second back panel 520 are stacked and spaced apart along the thickness direction of the display panel 100. The area of ​​the first back panel 510 can be larger than the area of ​​the second back panel 520, or the area of ​​the first back panel 510 can be smaller than the area of ​​the second back panel 520. When the area of ​​the first back panel 510 is larger than the area of ​​the second back panel 520, the first back panel 510 can completely cover the second back panel 520.

[0120] In some embodiments, the first connecting structure 511 includes a first connecting portion 5112, and the second connecting structure 521 includes a second connecting portion 5212. The first connecting portion 5112 and the second connecting portion 5212 are opposite to each other and spaced apart along the front-back direction of the display panel. The first connecting portion 5112 is embedded in the first slot 811, and the second connecting portion 5212 is embedded in the second slot 812. This arrangement facilitates the fixed connection of the flexible body 8101 to the first connecting structure 511 and the second connecting structure 521, respectively.

[0121] In some embodiments, the first connecting structure 511 further includes a first bending portion 5111, one end of which may be perpendicularly connected to the first back plate 510, and the other end of which extends away from the first back plate 510; the first connecting portion 5112 may be parallel to the first back plate 510, and the other end of the first bending portion 5111 and the first connecting portion 5112 are perpendicularly connected; that is, along the second direction ( Figure 6 and Figure 7 (As shown in the vertical direction), the first connecting part 5112 and the first back plate 510 are arranged at a certain distance apart.

[0122] In some embodiments, the first connecting portion 5112 and the first bending portion 5111 can both be plate-shaped structures to facilitate the processing of the first back plate 510.

[0123] In some embodiments, the second connecting structure 521 further includes a second bend 5211, one end of which is perpendicularly connected to the second back plate 520, and the other end of which extends away from the second back plate 520; the second connecting portion 5212 may be parallel to the second back plate 520, and the other end of the second bend 5211 and the second connecting portion 5212 may be perpendicularly connected; that is, along the second direction ( Figure 6 and Figure 7 (As shown in the vertical direction), the second connecting part 5212 and the second back plate 520 are arranged at a certain distance apart.

[0124] In some embodiments, the second bending portion 5211 and the second connecting portion 5212 can both be plate-shaped structures to facilitate the processing of the second back plate 520.

[0125] At the same time, the first card slot 811 and the second card slot 812 also move along the second direction (that is... Figures 1 to 3 The vertical direction shown in the figure (the second direction is perpendicular to the first direction) is arranged vertically at intervals. The first connecting part 5112 is embedded in the first slot 811, and the second connecting part 5212 is embedded in the second slot 812.

[0126] Continue to refer to Figure 6 and Figure 7 In some embodiments of this application, taking the area of ​​the first back plate 510 as being larger than the area of ​​the second back plate 520 as an example, the first back plate 510 can completely cover the second back plate 520, and the edge of the first back plate 510 extends beyond the edge of the second back plate 520.

[0127] In some of the above embodiments, the first connecting portion 5112 extends close to the center of the first back plate 510, and the second connecting portion 5212 extends away from the center of the second back plate 520; at this time, the vibration damping connector 810 is disposed between the first connecting portion 5112 and the second connecting portion 5212, so that the first connecting portion 5112 and the second connecting portion 5212 are respectively embedded in the first slot 811 and the second slot 812.

[0128] Continue to refer to Figure 4 and Figure 5 In some embodiments of this application, the first slot 811 is an annular groove provided on the outer peripheral wall of the flexible body 8101, and the first connecting part 5112 has a first mounting through hole. The first connecting part 5112 is embedded in the first slot 811 through the first mounting through hole. That is, the first connecting part 5112 is sleeved on the groove wall of the first slot 811 through the first mounting through hole, and the inner peripheral wall of the first mounting through hole is also engaged with the first slot 811 to ensure that the first back plate 510 and the vibration damping connector 810 are stably connected.

[0129] The second slot 812 is also an annular groove provided on the outer peripheral wall of the flexible body 8101. The second connecting part 5212 has a second mounting through hole. The second connecting part 5212 is embedded in the second slot 812 through the second mounting through hole. That is, the second connecting part 5212 is sleeved on the groove wall of the second slot 812 through the second mounting through hole, and the inner peripheral wall of the second mounting through hole is also engaged with the second slot 812 to ensure that the second back plate 520 and the vibration damping connector 810 are stably connected.

[0130] In some embodiments, the cross-sectional area of ​​the flexible body 8101 gradually decreases from its first end toward its second end; for example, the flexible body 8101 is frustum-shaped. A first slot 811 is disposed at the end of the flexible body 8101 with a larger cross-sectional area, and a second slot 812 is disposed at the end of the flexible body 8101 with a smaller cross-sectional area.

[0131] Some embodiments of this application, by setting a conical flexible body 8101, not only facilitate the processing of the flexible body 8101, but also make the structure of the flexible body 8101 more stable.

[0132] In some embodiments, the depth of the first slot 811 is greater than the depth of the second slot 812, so that the connection between the first slot 811 and the first back plate 510 is more stable and reliable. Even if the first back plate 510 vibrates under the drive of the exciter 400, the stability of the connection can still be guaranteed.

[0133] Continue to refer to Figure 4 and Figure 5In some embodiments of this application, a fastening hole 813 is provided on the flexible body 8101, and a second slot 812 is located outside the fastening hole 813. The central axis of the fastening hole 813 is parallel to the second direction (i.e., Figure 4 and Figure 5 (The vertical direction shown in the figure) is parallel. The fastening hole 813 can be provided only at one end of the flexible body 8101 near the second slot 812; or, the fastening hole 813 can be a through hole that penetrates the flexible body 8101. Such a setting not only helps to reduce weight, but also improves the flexibility of the flexible body 8101.

[0134] The vibration damping connector 810 also includes a fastener 814, which is fixed in the fastening hole 813 to prevent the second back plate 520 from coming out of the second slot 812. In some embodiments, the fastener 814 is interference-fitted in the fastening hole 813.

[0135] In some embodiments, the fastener 814 includes an opposing head 8141 and a tail 8142, the head 8141 matching a fastening hole 813 such that the head 8141 of the fastener 814 is connected in the fastening hole 813; the diameter of the tail 8142 of the fastener 814 is larger than the diameter of the fastening hole 813 such that the tail 8142 of the fastener 814 can abut against the flexible body 8101.

[0136] Meanwhile, the diameter of the tail 8142 of the fastener 814 can be larger than the diameter of the second mounting through hole. When the second connecting part 5212 comes out of the second slot 812, the tail 8142 of the fastener 814 can ensure that the second connecting part 5212 is connected to the flexible body 8101, thus ensuring the stability of the connection between the second back plate 520 and the vibration damping connector 810.

[0137] Continue to refer to Figure 4 and Figure 5 In some embodiments, the fastening hole 813 may include a first hole segment 8131 and a second hole segment 8132, the central axis of the first hole segment 8131 and the central axis of the second hole segment 8132 are coaxial, and the diameter of the first hole segment 8131 is smaller than the diameter of the second hole segment 8132, such that an abutment platform is formed at the intersection of the first hole segment 8131 and the second hole segment 8132.

[0138] The head 8141 of the fastener 814 is along the second direction (that is...) Figure 4 and Figure 5 (In the vertical direction shown) it enters the first hole section 8131 and the second hole section 8132 in sequence and connects to the first hole section 8131 and the second hole section 8132.

[0139] The fastener 814 also includes a middle section 8143, which connects the head 8141 and the tail 8142. The diameter of the middle section 8143 is the same as the diameter of the first hole section 8131, or the middle section 8143 is interference-fitted with the first hole section 8131.

[0140] In some embodiments, the head 8141 can be an inverted trapezoid or an inverted cone, with the wider portion of the inverted trapezoid or inverted cone connected to the middle portion 8143. When the narrower portion of the inverted trapezoid or inverted cone is fully disposed in the second hole segment 8132, the wider end of the inverted trapezoid or inverted cone will abut against the abutment platform. The diameter of the narrower end of the inverted trapezoid or inverted cone can be equal to or smaller than the diameter of the first hole segment 8131, facilitating the insertion of the fastener 814 into the fastening hole 813.

[0141] The fastener 814, in conjunction with the first hole section 8131 and the second hole section 8132, prevents the fastener 814 from loosening, further ensuring the stability of the connection between the second back plate 520 and the vibration damping connector 810.

[0142] Combination Figure 8 The main channel is excited by exciter 400, and there are two exciters 400, forming a 2.0 stereo sound for the left and right channels. The circuit board 800 includes a power board and a main board, which are independent components. The power board and the main board are mounted on the second back panel through vibration damping connectors, which makes the screen sound have a wider frequency response range and less prone to mechanical vibration.

[0143] In summary, some embodiments of this application provide a display device including a back plate 500 and a vibration damping connector 810. Both the back plate 500 and the vibration damping connector 810 are constructed on the back of a display panel 100. The back plate 500 is parallel to the display panel 100. The back plate 500 includes a first back plate 510 and a second back plate 520. The first back plate 510 is configured to be connected to an exciter 400. The second back plate 520 is close to and parallel to a circuit board 800 and is configured to be fixedly connected to the circuit board 800. At least a portion of the structure of the vibration damping connector 810 is a flexible part, and both ends of the vibration damping connector 810 are fixedly connected to the first back plate 510 and the second back plate 520, respectively. By dividing the complete backplate 500 into a first backplate 510 and a second backplate 520, the circuit board 800 is only connected to the second backplate 520, reducing the contact area between the circuit board 800 and the backplate 500 and preventing the reaction force of the exciter 400 from being directly transmitted to the circuit board 800. At the same time, the first backplate 510 and the second backplate 520 are connected by a vibration damping connector 810, which further attenuates the reaction force of the exciter 400 transmitted to the circuit board 800, reduces the resonance noise of the circuit board 800, and expands the frequency response of the display screen to the full frequency range, thereby improving the sound field effect of the display screen.

[0144] Combination Figure 9 In some embodiments of this application, the exciter 400 also includes a spring 420, the vibration output end of the actuator 410 is connected to the 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.

[0145] When the exciter 400 is activated, the actuator 410 vibrates and drives the 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.

[0146] In some embodiments, the central axis of the actuator 400 is perpendicular to the 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 9 In the vertical direction.

[0147] The vibration output end of the actuator 410 forms a third connection structure 411 to increase the connection area between the actuator 410 and the lamp board 210 and prevent the actuator 410 and the lamp board 210 from detaching from each other.

[0148] 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.

[0149] In some embodiments of this application, the central axis of the spindle 420 may coincide with the central axis of the exciter 400.

[0150] In some embodiments of this application, the exciter 400 transfers the heat generated by the vibration of the actuator 410 to the exciter body 401 for heat dissipation by setting a spring 420. In this way, the heat generated by the actuator 410 can be dissipated not only through air but also through the spring 420, which helps to reduce the temperature of the actuator 410 and reduce the impact of local temperature on image display quality.

[0151] 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.

[0152] 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.

[0153] Reference Figure 9 and Figure 10 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.

[0154] Continue to refer to Figure 9 and Figure 10 In some embodiments, the elastic wave 420 further 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.

[0155] 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.

[0156] 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.

[0157] 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.

[0158] In some embodiments, there are multiple fiber layers 421 and thermally conductive layers 422, and the fiber layers 421 and thermally conductive layers 422 are adjacent to each other. In this way, the fiber layers 421 and thermally conductive layers 422 are arranged in an alternating stacked manner.

[0159] In some embodiments, the fiber layer 421 is provided with two layers, and the thermally conductive layer 422 is located between the two fiber layers 421.

[0160] In other embodiments, reference is made to Figure 10 The thermal conductive layer 422 has two layers, with the fiber layer 421 located between the two thermal conductive layers 422.

[0161] 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.

[0162] 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.

[0163] Combination Figure 9 In 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 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.

[0164] Combination Figure 11 In some 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.

[0165] The thickness of the thermal conductive film 423 can be 100μm to 1000μm, and the thickness of the thermal conductive film 423 can be 100μm to 200μm, 200μm to 300μm, 300μm to 400μm, 400μm to 500μm, 500μm to 600μm, 600μm to 700μm, 700μm to 800μm, 800μm to 900μm, 900μm to 1000μm; for example, 200μm, 300μm, 400μm, 500μm, 600μm, 700μm, 800μm, 900μm, etc.

[0166] The fiber layer 421 and the thermally conductive film 423 can both be annular, forming a bouncy wave 420 after embossing and cooling.

[0167] 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.

[0168] In some examples, the thermal conductive film 423 is provided with two layers, and the fiber layer 421 is disposed between the two thermal conductive films 423.

[0169] In other examples, refer to Figure 11 The fiber layer 421 has two layers, and the thermal conductive film 423 is disposed between the two fiber layers 421.

[0170] 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.

[0171] 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.

[0172] 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.

[0173] Refer again Figure 9 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 piece 1203 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.

[0174] 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.

[0175] Continue to refer to Figure 9 Taking the exciter 400 as an electromagnetic exciter as an example, the electromagnetic exciter includes a magnetic component 450 and a voice coil. The magnetic component 450 is configured to generate a magnetic field, and the voice coil vibrates in the magnetic field along the axis of the voice coil.

[0176] 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.

[0177] One end of the voice coil is connected to the lamp plate 210. A sheet-like connecting structure 411 can also be provided between the voice coil and the 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.

[0178] Thus, under the influence of the magnetic field, the electromagnetic force causes a high-frequency resonance in the voice coil, which directly vibrates the 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 driven lamp panel 210. This is the biggest difference between the exciter housing of the OLED screen and the excitation method that is fixed to the bracket.

[0179] 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.

[0180] The spring 420 is pressed onto the magnetic conductor 451 by the pressure ring 440. For example, the spring 420 is bonded to the magnetic conductor 451, the pressure ring 440 is bonded to the magnetic conductor 451, and the pressure ring 440 is bonded to the housing 430, and the connection method is simple and stable.

[0181] 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.

[0182] Continue to refer to Figure 9 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.

[0183] In some possible embodiments, the portion of the housing 430 that contacts the magnetic conductor 451 is provided with a vent hole, which can be opposite to a ventilation hole to further improve heat dissipation efficiency. The vent hole can be a circular hole, and some embodiments of this application do not limit the shape, number, or arrangement of the vent holes.

[0184] Combination Figure 12 In some embodiments, the housing 430 of the actuator 400 is connected to the first back plate 510 via a fixing pin 480, which can be perpendicular to the first back plate 510. An elastic pad 460 is provided on the housing 430, and the housing 430 is connected to the first back plate 510 via the elastic pad 460.

[0185] 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 first back plate 510 during the vibration of the exciter 400. This embodiment does not limit the structure, material, etc. of the elastic pad 460.

[0186] 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 first back plate 510 have a variable relative position. That is, during the vibration of the exciter 400, the housing 430 can reciprocate relative to the first back plate 510. At this time, the exciter 400 also constitutes an approximately inertial drive to drive the 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 first back plate 510.

[0187] Combination Figure 12 The display panel 100 includes a display film layer 120, which is a liquid crystal film layer. The liquid crystal film layer includes a color filter (CF) substrate, a thin film transistor (TFT) substrate (also called an array substrate), and a liquid crystal (LC) layer, which is 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.

[0188] In some embodiments, the display device further includes an optical film assembly 110, which is located between the display film layer 120 and the lamp panel 210.

[0189] Depending on the type of light emitted by the lamp panel 210, the optical film assembly 110 can be of different types. For example, when the lamp panel 210 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 210 where the light source is located.

[0190] When the lamp panel 210 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 lamp panel 210 and is configured to uniformly mix the light from the multiple lamp panels 210, that is, to convert the point lamp panel 210 into a surface lamp panel 210. The fluorescent film 112 converts the light emitted by the lamp panel 210 into white light, so that the color of the light emitted by the lamp panel 210 is not limited, and the lamp panel 210 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 lamp panel 210 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 optical film assembly 110 including a diffusion film 113, a fluorescent film 112, and a brightness enhancement film 111 as an example.

[0191] 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 lamp panel 210 is transmitted to the display film layer 120 through the optical film assembly 110.

[0192] In other embodiments, a gas gap exists between the display film 120 and the brightness enhancement film 111; and / or, a gas gap exists between the brightness enhancement film 111 and the fluorescent film 112; and / or, a gas gap exists between the fluorescent film 112 and the diffusion film 113, with the gas gaps 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, 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 above three types of gas gaps.

[0193] Combination Figure 13 The support member 300 is distributed in multiple rings around the exciter 400, and the distribution density of the support member 300 decreases along the direction away from the exciter 400.

[0194] In some embodiments, the number of support members 300 is relatively large, which affects the difficulty of process assembly. Based on this, some embodiments of this application propose an optimization scheme for the number of support members 300 while ensuring vibration buffering and vibration transmission effects. The support members 300 are arranged non-uniformly according to the distance from the installation position of the exciter 400. The vibration is most intense at the position of the exciter 400, and the arrangement density of the support members 300 is the largest. The vibration amplitude is smaller at the position away from the exciter 400, and the arrangement density of the support members 300 is reduced. This ensures that the vibration buffering and vibration transmission effects in the entire display device area are relatively uniform, and optimizes the number of support members 300, which is beneficial to reducing the implementation cost of the display device and the difficulty of process assembly.

[0195] In some embodiments, such as Figure 13 As shown, the support strength of the support member 300 decreases in the direction away from the actuator 400; and / or, the height of the support member 300 decreases in the direction away from the actuator 400. Exemplarily, the above settings may be applied only to the support strength of the support member 300, only to the height of the support member 300, or both the support strength and height of the support member 300 may be applied simultaneously.

[0196] In some embodiments, support members 300 with different hardness or size are set according to the distance between the support member 300 and the installation area of ​​the exciter 400, so as to achieve the effect that the support strength of the support member 300 is inversely proportional to the distance from the exciter 400. That is, the closer to the exciter 400, the greater the support strength of the support member 300, and the farther away from the exciter 400, the smaller the support strength of the support member 300. This realizes that the support members 300 are arranged according to the vibration amplitude, thereby further optimizing the uniformity of vibration buffering and vibration transmission effect in the entire display device area.

[0197] On the other hand, the interference fit of the support member 300 can also be adjusted according to its position relative to the exciter 400. That is, the height of the support member 300 near the exciter 400 is set to be greater than the height of the support member 300 far from the exciter 400, so that the vibration transmission efficiency is highest near the exciter 400. This avoids the non-interference fit of the support member 300 near the exciter 400 due to assembly tolerances. In other words, it ensures that the upper and lower surfaces of the support members 300 at each position in the area where the corresponding display device is located do not detach from the display panel 100 and the lamp panel 210 when vibrating, thus optimizing the vibration transmission efficiency of the support members 300 at each position.

[0198] Reference Figure 14 A support member 300 is provided between the 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.

[0199] In some embodiments of this application, the support member 300 is interference-fitted between the display panel 100 and the lamp plate 210, that is, the two ends of the support member 300 can be combined with the display panel 100 and the lamp plate 210 by an interference fit design, that is, 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 lamp plate 210.

[0200] like Figure 14 As shown in Figure a, the support member 300 is in a free contact state; in Figure b, the exciter 400 is not vibrating and the support member 300 is in a static placement state, and the support member 300 is in an interference compression state due to the pressure of the display panel 100 and the lamp plate 210; in Figure c, when the vibration output end of the exciter 400 pushes forward, the support member 300 is in a further over-compression state. The size of the support member 300 can be, for example, the sum of the distance between the display panel 100 and the lamp plate 210 and half of the vibration amplitude, to ensure that in the state shown in Figure a, the support member 300 is in contact with both the display panel 100 and the lamp plate 210, thereby improving the transmission efficiency of vibration from the lamp plate 210 to the display panel 100.

[0201] In some embodiments, such as Figure 14 As shown, the support member 300 can be connected to the lamp board 210 through the first adhesive structure 310, such as UV adhesive, double-sided adhesive, etc., to prevent the support member 300 from moving relative to the lamp board 210.

[0202] like Figure 15As shown, the support member 300 includes a rigid part 302 and an elastic part 301 connected to each other. The rigid part 302 is connected to the lamp panel 210, and the elastic 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 protruding from the lamp panel 210. This ensures that the light source will not come into contact with the display panel 100 and cause wear when the support member 300 is under pressure.

[0203] The rigid part 302 can be a rigid plastic part, and the elastic part 301 can be made of elastic materials such as silicone rubber. The rigid part 302 is used as an insert to form the elastic part 301 by injection molding on its outer side. The rigid part 302 can be bonded to the lamp panel 210, and the connection method is simple and reliable.

[0204] The rigid part 302 can be a metal part made of a weldable material. It is connected to the elastic part 301 by injection molding, mechanical fitting or bonding. The rigid part 302 is welded to the lamp plate 210, which is firmly installed and facilitates mass automatic assembly.

[0205] In some embodiments of this application, the support member 300 is provided with a combination of a rigid part 302 and an elastic part 301 connected together. The elastic part 301 can ensure a vibration buffering effect, and the rigid part 302 can ensure that the light source 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.

[0206] Combination Figure 16 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 320. The two ends of the support member 300 are fixedly connected to the lamp board 210 and the display panel 100 respectively through the suction cup structures 320. The process is simple to implement.

[0207] Combination Figure 17 One end of the support member 300 is connected via a first adhesive structure 310, and the other end is connected via a suction cup structure 320. For example, one end of the support member 300 is connected to the lamp panel 210 via the first adhesive structure 310, and the other end is fixedly connected to the display panel 100 via the suction cup structure 320. Thus, the support member 300 can be fixed by double-sided adhesive or mechanical fixation, thereby achieving vibration linkage between the 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.

[0208] 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.

[0209] 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; The light panel is located on the back side of the display panel; An exciter is connected to the lamp panel and drives the lamp panel to vibrate; The circuit board is configured to control the light panel to emit light and to control the exciter to vibrate; A first backplate, configured to fix the actuator; A second backplate is disposed opposite to the circuit board and is configured to fix the circuit board; the second backplate and the first backplate are flexibly connected.

2. The display device according to claim 1, characterized in that, The display device further includes a vibration damping connector located on the back of the back plate, and at least a portion of the structure of the vibration damping connector is a flexible part, with both ends of the vibration damping connector being fixedly connected to the first back plate and the second back plate, respectively.

3. The display device according to claim 2, characterized in that, The vibration damping connector includes a flexible body, which has a first slot and a second slot; the first back plate is embedded in the first slot at the edge of the flexible body, and the second back plate is embedded in the second slot at the edge of the vibration damping connector.

4. The display device according to claim 3, characterized in that, The first back plate forms a first connecting structure at its edge facing the vibration damping connector, and the first connecting structure is embedded in the first slot; the second back plate has a second connecting structure at its edge facing the vibration damping connector, and the second connecting structure is spaced apart from the first connecting structure; the second connecting structure is embedded in the second slot.

5. The display device according to claim 4, characterized in that, The first connection structure includes a first connection portion, and the second connection structure includes a second connection portion. The second connection portion and the first connection portion are opposite to each other and spaced apart along the thickness direction of the display panel. The first connection portion is embedded in the first slot, and the second connection portion is embedded in the second slot.

6. The display device according to claim 5, characterized in that, Both the first slot and the second slot are annular grooves disposed on the outer peripheral wall of the flexible body; The first connecting part is provided with a first mounting through hole, and the first connecting part is fitted into the first slot through the first mounting through hole; The second connecting part is provided with a second mounting through hole, and the second connecting part is fitted into the second slot through the second mounting through hole.

7. The display device according to any one of claims 3-6, characterized in that, The vibration damping connector also includes a fastener, and the flexible body is provided with a fastening hole, with the second slot located outside the fastening hole; the fastener is fixed inside the fastening hole.

8. The display device according to claim 7, characterized in that, The fastening hole is a through hole that penetrates the flexible body.

9. The display device according to any one of claims 3-6, characterized in that, The cross-sectional area of ​​the flexible body gradually decreases from its first end toward its second end, and the first slot is located at the end of the flexible body with a larger cross-sectional area, while the second slot is located at the end of the flexible body with a smaller cross-sectional area.

10. The display device according to any one of claims 1-6, characterized in that, A fixing pin is provided on the first back plate, and an elastic pad is provided on the actuator. The elastic pad is fixed to the first back plate by the fixing pin.

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