Display device

Abstract

The embodiment of the invention belongs to the technical field of display, and provides display equipment which comprises a display panel, a lamp panel and an exciter, and the vibration output end of the exciter is connected with the lamp panel to drive the lamp panel to vibrate; and the exciter drives the display panel to vibrate and produce sound through the gas in the cavity between the lamp panel and the display panel, so that the acoustic effect is good, and sound and picture integration is easy to realize. Besides, the actuating piece of the exciter easily generates a large amount of heat due to reciprocating vibration, the shell and the actuating piece of the exciter are connected through the damper, and the heat generated by vibration of the actuating piece is transmitted to the shell for heat dissipation, so that the heat generated by the actuating piece can be dissipated through air and also can be dissipated through the damper, and the service life of the actuator is prolonged. The temperature of the actuating piece is reduced, the influence of local temperature on the image display quality is reduced, and the image display quality of the display equipment is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of display technology, and more particularly to a display device. Background Art

[0002] The speakers in display devices, such as televisions, are limited by their ultra-thin design and installation location. They are generally small in size and are forced to use bottom-firing or rear-firing methods. The resulting sound and image positions are separated from the image positions, resulting in a poor viewing experience and an inability to provide an audio-visual experience that integrates sound and image.

[0003] In theory, any flat-panel display device capable of generating sound waves through direct vibration of the display panel via an acoustic actuator can generate sound waves. For example, OLED (Organic Light-Emitting Diode) screens already have self-sounding technology, where the OLED panel acts as both the display and the speaker diaphragm, achieving a seamless audiovisual experience. However, acoustic actuators have poor heat dissipation performance, transferring heat to the display panel, causing localized temperature increases and resulting in variations in brightness and color in certain areas of the image. Summary of the Invention

[0004] Some embodiments of the present application provide a display device that can realize the vibration and sound generation of the display screen, and the actuator of the exciter that generates the vibration can dissipate heat through elastic waves.

[0005] To achieve the above objectives, some embodiments of the present application provide a display device, including:

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

[0007] a light board, wherein a plurality of light boards are provided and spliced with each other, and the light board is configured to provide backlight for the display panel, and a cavity is formed between the light board and the display panel;

[0008] An exciter, which is arranged on a side of the light board away from the display panel and drives the light board to vibrate; the exciter includes:

[0009] shell,

[0010] an actuating member, wherein a vibration output end of the actuating member is connected to the light board;

[0011] The damper is connected between the actuator and the housing, and is configured to transfer heat from the actuator to the housing.

[0012] In some embodiments of the present application, a display device displays image information by providing a display panel; provides backlight for the display panel by providing a light board, wherein multiple light boards are spliced together, and an exciter is connected to the light board to drive the light board to vibrate; provides sound and vibration for the display panel by providing an exciter, wherein the exciter is located on the side of the light board facing away from the display panel, so that the exciter's location does not affect the display function of the display panel; the vibration output end of the exciter is connected to the light board, thereby simultaneously transmitting vibration force to multiple light boards, thereby increasing the vibration area; and the exciter drives the display panel to vibrate and generate sound through the gas in the cavity between the light board and the display panel, thereby achieving a good acoustic effect and facilitating the integration of sound and image. Furthermore, the actuator of the exciter is prone to generating a large amount of heat due to reciprocating vibration. By providing a spring connecting the housing of the exciter and the actuator, the heat generated by the vibration of the actuator is transferred to the housing for dissipation. In this way, the heat generated by the actuator can be dissipated not only through air but also through the spring, thereby reducing the temperature of the actuator, reducing the impact of local temperature on image display quality, and improving the image display quality of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the implementation methods of some embodiments of the present application or related technologies, the following is a brief introduction to the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0014] Figure 1 A schematic diagram of an operation scenario between a display device and a control device in some embodiments of the present application;

[0015] Figure 2 A block diagram of a display device for some embodiments of the present application;

[0016] Figure 3 A cross-sectional view of a display device according to some embodiments of the present application;

[0017] Figure 4 A cross-sectional view of a display device according to some embodiments of the present application;

[0018] Figure 5 Layout diagram of the exciter and light board for some implementations of this application;

[0019] Figure 6 Layout diagram of the exciter and light board for some implementations of this application;

[0020] Figure 7 Layout diagram of the exciter and light board for some implementations of this application;

[0021] Figure 8 Layout diagram of the exciter and light board for some implementations of this application;

[0022] Figure 9 A schematic cross-sectional view of an actuator according to some embodiments of the present application;

[0023] Figure 10 A schematic cross-sectional view of a spring wave according to some embodiments of the present application;

[0024] Figure 11 A schematic diagram of the structure of some embodiments of the present application;

[0025] Figure 12 A schematic diagram of the structure of some embodiments of the present application;

[0026] Figure 13 A schematic cross-sectional view of a spring wave according to some embodiments of the present application;

[0027] Figure 14 A schematic cross-sectional view of a spring wave according to some embodiments of the present application;

[0028] Figure 15 A schematic diagram of the structure of some embodiments of the present application;

[0029] Figure 16 A schematic diagram of the structure of some embodiments of the present application;

[0030] Figure 17 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0031] Figure 18 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0032] Figure 19 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0033] Figure 20 A schematic diagram of the arrangement of support members for some implementations of the present application;

[0034] Figure 21 A schematic diagram of the distribution of a first type of sound emission area of a display device provided in some embodiments of the present application;

[0035] Figure 22 A schematic diagram illustrating the distribution of the second sound emission area of the display device provided in some embodiments of the present application;

[0036] Figure 23 A schematic diagram illustrating the distribution of a third type of sound emission area of a display device provided in some embodiments of the present application;

[0037] Figure 24 A schematic diagram illustrating the distribution of a fourth type of sound emission area of a display device provided in some embodiments of the present application;

[0038] Figure 25 Schematic diagram of the distribution of actuators of a display device provided in some embodiments of the present application.

[0039] Description of reference numerals:

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

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

[0042] 210: Light panel; 201: Left main channel area; 202: Right main channel area; 203: Center channel area; 204: Left surround channel area; 205: Right surround channel area; 206: Bass area; 210a: First light panel; 210b: Second light panel; 211: Connector;

[0043] 300: support member;

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

[0045] 500: back panel; 501: back panel body; 502: first side panel; 503: opening; 505: first adhesive member;

[0046] 900: control device; 901: tuner and demodulator; 902: communicator; 903: detector; 904: external device interface; 905: controller; 906: display; 907: audio output interface; 908: memory; 909: power supply; 910: user interface;

[0047] M: cavity; N: magnetic air gap. DETAILED DESCRIPTION

[0048] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0049] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0050] In addition, the terms "comprises" and "comprising" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0051] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0052] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0054] Conventional display devices, such as televisions, are equipped with speakers to output sound. These speakers are typically mounted on the bottom or back of the display device, resulting in a separation between the sound and image, a poor viewing experience, and a failure to provide a unified audiovisual experience. In related technologies, an actuator is installed on the display device to generate sound on the screen, allowing the display panel to combine display and sound generation functions, achieving a unified audiovisual experience.

[0055] In related technologies, the exciter of a display device has poor heat dissipation performance, and the vibration output end of the exciter becomes the only heat transfer path. Since the vibration output end of the exciter is in contact with the display panel, heat is transferred to the display panel, causing the local temperature of the display panel to rise, resulting in deviations in the brightness and color of the local image display.

[0056] In some actuators, this liquid is filled between the voice coil and the magnetic structure of the actuator to increase heat conduction technology, but it is only applicable to high-frequency speakers with small amplitudes. Excessive temperature will cause the magnetic liquid to evaporate and splash, and the heat dissipation effect is limited.

[0057] In view of this, some embodiments of the present application provide a display device, whose actuator includes an actuator, a spring, and a housing. The spring is connected to the actuator and the housing, respectively. The spring transfers heat from the actuator to the housing for heat dissipation, thereby lowering the temperature of the actuator and reducing the impact of local temperature on image display quality.

[0058] In the related art, compared with display devices using OLED light sources, because OLED displays are self-luminous screens and the OLED displays themselves have a certain degree of flexibility, an exciter can be set on the back of the OLED display to elastically deform and emit sound under the excitation vibration of the exciter. In liquid crystal display devices, however, the liquid crystal display device has a backlight module, and the exciter cannot be directly set on the back of the display panel. In addition, the lamp board in the backlight module is relatively hard, making it difficult to couple and transmit its own vibration to the display panel, and the transmission efficiency of the vibration force is low. Therefore, a support member can be set between the display panel and the lamp board of a Mini-LED display device or other liquid crystal display device, and used as a vibration transmission medium to transmit 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. In addition, the support member can maintain the gap of the cavity M between the lamp board and the display panel within a preset range, avoiding the risk of collision noise and abrasion caused by the light source and the display panel touching each other at a certain position.

[0059] The following will be combined with the accompanying drawings of some embodiments of the present application to clearly and completely describe the technical solutions of some embodiments of the present application. Obviously, the embodiments described are only some embodiments of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of this application.

[0060] The display device provided in the embodiments of the present application may have various implementation forms, for example, it may be a television, a smart TV, a monitor, an electronic bulletin board, an electronic table, etc. Figure 1 and Figure 2 This is a specific implementation of the display device of the present application.

[0061] Figure 1 This is a schematic diagram of an operation scenario between a display device and a control device according to an exemplary embodiment of the present application. Figure 1 As shown, the user can operate the display device 10 through the smart device 20 or the control device 900. In some embodiments, the display device 10 also communicates data with the server 30. The display device 10 can be allowed to communicate via a local area network (LAN), a wireless local area network (WLAN), and other networks. The server 30 can provide various content and interactions to the display device 10. The server 30 can be a cluster or multiple clusters, and can include one or more types of servers.

[0062] Figure 2 A schematic diagram of the structure of a display device in an example is shown in FIG. Figure 2 In some embodiments, the display device 10 includes a tuner-demodulator 901 ; the tuner-demodulator 901 receives broadcast television signals via a wired or wireless reception method, and demodulates audio and video signals, such as EPG data signals, from multiple wireless or wired broadcast television signals.

[0063] In some embodiments, the display device 10 includes a communicator 902 . Communicator 902 is a component configured to communicate with an external device or server using various communication protocols. For example, communicator 902 may include at least one of a Wi-Fi module, a Bluetooth module, a wired Ethernet module, or other network communication protocol chip, or a near-field communication protocol chip, as well as an infrared receiver. Display device 10 can use communicator 902 to send and receive control signals and data signals with control device 900 or server 30.

[0064] In some embodiments, the display device 10 includes a detector 903 configured to collect signals from the external environment or external interactions. For example, the detector 903 may include a light receiver configured as a sensor to collect ambient light intensity; or, the detector 903 may include an image collector, such as a camera, configured to collect external environmental scenes, user attributes, or user interaction gestures; or, the detector 903 may include a sound collector, such as a microphone, configured to receive external sounds.

[0065] In some embodiments, the display device 10 includes an external device interface 904. The external device interface 904 may include, but is not limited to, any one or more of the following: a high-definition multimedia interface (HDMI), an analog or digital high-definition component input interface (component), a composite video input interface (CVBS), a USB input interface (USB), an RGB port, or the like. Alternatively, the external device interface 904 may be a composite input / output interface formed by multiple of the aforementioned interfaces.

[0066] In some embodiments, the display device 10 includes a controller 905;

[0067] In some embodiments, the display device 10 includes a display 906. The display 906 includes a display screen component configured to present images, a driver component configured to drive the image display, and a component configured to receive image signals output from a controller and display video content, image content, a menu control interface, and a user control UI interface. 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.

[0068] In some embodiments, the display device 10 includes an audio output interface 907;

[0069] In some embodiments, the display device 10 includes a memory 908;

[0070] In some embodiments, the display device 10 includes a power supply 909;

[0071] 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 a control signal from the control device 900 (eg, an infrared remote controller).

[0072] In some embodiments, the controller includes a processor;

[0073] In some embodiments, the controller includes a video processor;

[0074] In some embodiments, the controller includes an audio processor;

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

[0076] In some embodiments, the controller includes RAM;

[0077] In some embodiments, the controller includes a ROM;

[0078] In some embodiments, the controller includes first to nth interfaces configured to input / output signals.

[0079] In some embodiments, the controller 905 and the tuner / demodulator 901 may be located in different separate devices, that is, the tuner / demodulator 901 may also be located in an external device of the main device where the controller 905 is located, such as an external set-top box.

[0080] The controller 905 controls the operation of the display device and responds to user operations through various software control programs stored in the memory. The controller 905 controls the overall operation of the display device 10. For example, in response to receiving a user command configured to select a UI object to be displayed on the display 906, the controller 905 can perform operations related to the object selected by the user command.

[0081] In some embodiments, the controller includes a central processing unit (CPU), a video processor, an audio processor, a graphics processing unit (GPU), RAM Random Access Memory (RAM), ROM (Read-Only Memory, ROM), a first interface to an nth interface configured as input / output, a communication bus (Bus), etc., and at least one of the above.

[0082] The user may input a user command through a graphical user interface (GUI) displayed on the display 906, and the user input interface receives the user input command through the graphical user interface (GUI). Alternatively, the user may input a user command through a specific voice or gesture, and the user input interface may recognize the voice or gesture through a sensor to receive the user input command.

[0083] A user interface is the medium for interaction and information exchange between an application or operating system and the user. It converts information between its internal form and a user-friendly format. A common user interface is the graphical user interface (GUI), which refers to a graphical user interface related to computer operations. It can be an icon, window, control, or other interface element displayed on an electronic device's display. Controls can include visual interface elements such as icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, and widgets.

[0084] Reference Figure 3Some embodiments of the present application provide a display device 10, which may be a liquid crystal display device. The display device 10 has a top side, a bottom side, a left side, a right side, and a front side and a back side. The left side and the right side of the display device 10 refer to the left side and the right side of the user when the user is facing the display surface of the display device. Accordingly, the side of the display device 10 facing the user is the front side, the side of the display device 10 facing away from the user is the back side, the upper side of the display device 10 is the top side, and the lower side of the display device 10 is the bottom side.

[0085] The display device 10 includes a display panel 100, which is configured to display image information such as text and images. The display panel 100 includes a display film layer 120. The display film layer 120 can be a liquid crystal film layer. The display film layer 120 can include a color filter (CF) substrate, a thin film transistor (TFT) substrate (also known as an array substrate) and a liquid crystal (LC) layer. The liquid crystal layer is located between the color filter substrate and the array substrate. The thin film transistor substrate is provided with data lines and scan lines. The direction of the liquid crystal molecules is controlled by whether the data lines and scan lines are energized or not, so that the backlight light is emitted through the color filter substrate and a preset color image is generated.

[0086] The display device 10 of some embodiments of the present application further includes a light board 210 to provide backlighting for the display panel 100. Exemplarily, the light board 210 includes a board body and a light source. The board body may be an aluminum plate, a printed circuit board (PCB), or the like. The light source may be a light-emitting diode (LED), a submillimeter light-emitting diode (Mini-Light-Emitting Diode, Mini LED), or a micron-level light-emitting diode (Micro LED). There may be multiple light sources, spaced apart on the board body.

[0087] In some embodiments, considering factors such as the size of the display device 10 and the manufacturing process of the light board 210, a plurality of light boards 210 are provided, and the plurality of light boards 210 are arranged in an array.

[0088] Combine Figure 3 and Figure 4Multiple independent light panels 210 are spliced together to form a whole. For example, two adjacent light panels 210 are provided with connectors 211 on the side facing away from the display panel 100. The connectors 211 secure the two adjacent light panels 210 together, thereby splicing the two adjacent light panels 210 together. The connectors 211 can be adhesives, such as double-sided tape or foam, for simple and convenient connection. Alternatively, the connectors 211 include a base layer and an adhesive backing disposed on the base layer, which splices the two adjacent light panels 210 together.

[0089] like Figure 4 As shown, a cavity M is formed between the light board 210 and the display panel 100. When cavity M is a closed cavity, the gas inside it does not circulate with the outside air. The light source of the light board 210 is located within cavity M. The gas within cavity M is viscous, with a kinematic viscosity much higher than that of water. The gas within cavity M acts as a damping spring, configured to transmit vibrations between the light board 210 and the display panel 100, causing the display panel 100 to vibrate and produce sound.

[0090] In some embodiments, a cavity M is formed between the light board 210 and the display panel 100 , and the cavity M may also be a non-enclosed cavity.

[0091] The display device 10 may be a liquid crystal display device. The display device 10 includes a backlight module, which may be a direct-lit backlight module. In this case, the backlight module includes a light panel, which provides backlight for the display panel through its light source. When the light panel vibrates, it compresses the gas within the cavity M, transmitting the vibrations to the display panel through the cavity M, causing the display panel to vibrate. The vibrations then generate sound waves, allowing the display panel to both display images and replace speakers for sound production.

[0092] The gap size of the cavity M can be determined based on the light source of the light panel, for example, the gap size is related to the size of the light source. Sub-millimeter light-emitting diodes (such as Mini-LEDs) have relatively compact sizes, which correspondingly results in a smaller gap in the cavity M between the backlight panel and the liquid crystal display panel. This reduces the thickness of the cavity M and improves the vibration transmission effect of the cavity M. Therefore, in this embodiment, the light source of the backlight module is described as a sub-millimeter light-emitting diode (Mini-LED).

[0093] For example, the gap of cavity M can be 0.3mm to 10mm, with the maximum gap of cavity M being 10mm. Alternatively, the gap of cavity M can be 0.3mm or 1mm, etc. For example, 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. Alternatively, when the gap of cavity M is 0.3mm, the distance between exciter 400 and display panel 100 is closer, the vibration is more intense, and the sound effect is better. When cavity M is 10mm, the thickness of cavity M is relatively large, which can prevent collision between the display panel and the light source at a certain position during vibration. Specifically, the gap of 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 the cavity M may be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, etc. It should be noted that the numerical values and numerical ranges involved in some embodiments of the present application are approximate values and may have a certain range of errors due to the influence of the manufacturing process. Those skilled in the art may consider such errors to be negligible.

[0094] Continue to refer to Figure 4 The display device of some embodiments of the present application further includes an actuator 400, which provides vibrations for the display panel 100 to produce sound. Specifically, the actuator 400 is disposed on the side of the light board 210 facing away from the display panel 100. The placement of the actuator 400 does not affect the display of the display device. The actuator 400 is configured to drive the light board 210 to vibrate, utilizing the gas in the cavity M to form a damping spring, transmitting the vibration force to the display panel 100, causing the display panel 100 to vibrate and produce sound.

[0095] The vibration output end of the actuator 400 is connected to the light board 210. In some embodiments, the vibration output end of the actuator 400 is connected to the light board 210, such as Figure 3 As shown; in this embodiment, the light panels 210 are connected by connecting members 211, and the connecting members 211 are connected to the back panel 500 of the display device.

[0096] In other embodiments, the vibration output end of the actuator 400 is connected to the joint of the light board 210. In this embodiment, the light board 210 is connected by a connector 211, and the light board 210 and the back panel 500 of the display device are connected by a subsequent attachment. Figure 17 The first adhesive 505 is shown connected.

[0097] The following describes, with reference to the accompanying drawings, the arrangement of the exciter when the vibration output end of the exciter 400 is connected to the joint of the light board 210 .

[0098] Combine Figures 5 to 8 Multiple light panels 210 are arranged in an array and spliced together. The splicing gaps of the light panels 210 are of two types: one extending horizontally along the display device, and the other extending vertically along the display device. The actuator 400 can be positioned at the horizontal joints of the light panels 210, and / or at the vertical joints of the light panels 210, and / or at the cross joints of the light panels 210, i.e., at the intersection of the horizontal and vertical joints.

[0099] In some embodiments, the light panels 210 are spliced together through connectors 211 to form an integral backlight panel.

[0100] In some embodiments, the splicing gap extends in the horizontal direction of the display device and can be defined as a horizontal splicing gap; accordingly, the connecting member 211 includes a horizontal connecting member extending in the horizontal direction of the display device. The actuator 400 can be arranged on the horizontal connecting member, such as Figure 5 As shown, a plurality of exciters 400 can be provided, and the plurality of exciters 400 can be arranged at intervals in the extension direction of the transverse connecting member; the plurality of exciters 400 can be arranged in a rectangular matrix on the plurality of transverse connecting members.

[0101] In some embodiments, the splicing gap extends along the longitudinal direction of the display device and can be defined as a longitudinal splicing seam; accordingly, the connecting member 211 includes a longitudinal connecting member extending along the longitudinal direction of the display device. The actuator 400 can be arranged on the longitudinal connecting member, such as Figure 6 As shown; multiple exciters 400 can be provided, and multiple exciters 400 can be arranged at intervals in the extension direction of the longitudinal connecting member. Figure 6 As shown, a plurality of actuators 400 are arranged in a rectangular matrix on a plurality of longitudinal connecting members.

[0102] Of course, the exciter 400 can be set on both the transverse connector and the longitudinal connector. For example, the exciter is set at the intersection of the transverse connector and the longitudinal connector. When multiple exciters 400 are set, at least one exciter 400 is set on the transverse connector and at least one exciter 400 is set on the longitudinal connector. Figure 7 shown.

[0103] In some possible implementations, the transverse connector extends to both ends of the light board 210; or, both ends of the transverse connector do not extend to both ends of the light board 210, and the extension length of the transverse connector is less than the transverse dimension of the light board 210, such as Figure 8 As shown. Figure 5 As shown, a horizontal joint seam of the backlight panel can be provided with multiple horizontal connectors; or, a single horizontal connector is provided, which runs through both ends of the backlight panel in the horizontal direction; such a setting is conducive to ensuring the reliability of the splicing of the light panel 210.

[0104] In some other possible implementations, the longitudinal connectors extend to both ends of the light board 210 in the longitudinal direction, such as Figure 8 Alternatively, the ends of the longitudinal connector do not extend to the ends of the longitudinal direction of the light board 210, and the extension length of the longitudinal connector is less than the longitudinal dimension of the light board 210. Figure 7 As shown, a longitudinal joint of the backlight panel can be provided with multiple longitudinal connectors; or a longitudinal connector is provided, and the longitudinal connector runs through both ends of the longitudinal direction of the backlight panel, such as Figure 5 As shown; such a setting is conducive to ensuring the reliability of the splicing of the light board 210.

[0105] In some embodiments of the present application, multiple independent lamp boards 210 are spliced together, and the vibration output end of the exciter 400 is connected to the splicing point of the lamp boards 210. The exciter 400 directly transmits the vibration to the multiple lamp boards 210, the vibration mass is relatively small, and the energy decays slowly; and the exciter 400 is used to support the lamp board 210, and there is no need to set a connecting plate on the side of the lamp board 210 away from the display panel 100, which is beneficial to reducing the difficulty of assembling the display device; and it is also beneficial to reducing the thickness of the entire machine.

[0106] In some embodiments of the present application, the actuator 400 may be any one or more of an electromagnetic actuator, a magnetostrictive actuator, and a piezoelectric actuator, and has high applicability. In some embodiments, the actuator 400 may include a magnetic field generating unit (e.g., a magnet) and a vibration coil. The magnetic field generating unit is configured to generate a magnetic field. By inputting a continuously changing current into the vibration coil, the force exerted by the vibration coil in the magnetic field generated by the magnetic field generating unit continuously changes, thereby generating vibration.

[0107] Among them, combined Figure 9 The exciter 400 of some embodiments of the present application includes: a spring wave 420; the spring wave 420 is spaced apart from the backlight assembly 200, and the spring wave 420 is configured to transfer heat generated by the vibration of the exciter 400 to a side away from the vibration output end of the exciter 400.

[0108] In some embodiments, the actuator 400 further includes a housing 430 , which is used to install the actuator 400 .

[0109] In some embodiments, the exciter 400 further includes an actuator 410 , a vibration output end of the actuator 410 is connected to the joint of the light board 210 ; one end of the elastic wave 420 is connected to the actuator 410 , and the other end of the elastic wave 420 is connected to the housing 430 .

[0110] When the exciter 400 is activated, the actuator 410 vibrates and drives the light board 210 to vibrate. The vibration force is transmitted to the display panel 100 via the gas in the cavity M, driving the display panel 100 to vibrate and produce sound. In this way, the display device of some embodiments of the present application can achieve front-side sound, and the position of the sound image is approximately coincident with the center position of the screen, achieving a unified audio and video, and providing users with a better audio-visual effect.

[0111] In some embodiments, the central axis of the actuator 400 is perpendicular to the light board 210, and the vibration output direction of the actuator 400 is along its central axis and perpendicular to the surface of the display device, that is, Figure 9 Middle vertical direction.

[0112] The vibration output end of the actuator 410 forms a connection structure 411 to increase the connection area between the actuator 410 and the light board 210 to prevent the actuator 410 and the light board from being separated from each other.

[0113] In some embodiments, the connection structure 411 is in a sheet shape, which can not only provide a larger connection area between the actuator 410 and the light board 210 , but also help reduce the weight of the exciter 400 .

[0114] In some embodiments of the present application, the central axis of the damper 420 coincides with the central axis of the actuator 400. The damper 420 includes a main body 4201;

[0115] In some embodiments, the spider 420 includes a first connecting portion 4202 ;

[0116] In some embodiments, the wave damper 420 includes a second connecting portion 4203;

[0117] The main body 4201 is arranged in a plane parallel to the display panel. It is annular and radially wavy, giving the damper 420 its elasticity. The inner end of the main body 4201 is bent to form a first connecting portion 4202, which is connected to the actuator 410. The outer end of the main body 4201 is bent to form a second connecting portion 4203, which is connected to the housing 430. The second connecting portion 4203 can be directly connected to the housing 430, or indirectly connected to the housing 430 via other components.

[0118] For example, the first connection portion 4202 and the second connection portion 4203 are both sheet-like structures, which is beneficial for increasing the connection area between the damper 420 and the housing 430 and the actuator 410, which not only helps to improve the stability of the connection, but also facilitates heat transfer.

[0119] In some embodiments of the present application, actuator 400 employs a damper 420 to transfer heat generated by the vibration of actuator 410 to housing 430 for dissipation. This allows heat generated by actuator 410 to be dissipated not only through air but also through damper 420, lowering the temperature of actuator 410 and minimizing the impact of localized temperature on image display quality. Furthermore, the provision of a first connecting portion 4202 increases the connection area with actuator 410, while the provision of a second connecting portion 4203 increases the connection area with housing 430, enhancing heat dissipation.

[0120] In some embodiments of the present application, the damper 420 increases the heat conduction path of the actuator 410. The thermal conductivity of the damper 420 is approximately 3 to 4 times that of copper. The lateral thermal conductivity of the damper 420 can reach 1000 W / m·K, which is significantly more efficient than air heat dissipation. This can reduce the temperature of the actuator 410 and the local temperature of the display device screen where sound is emitted, avoid "hot" spots on the screen, reduce unevenness in screen brightness and color, and increase the maximum power and operating reliability of the actuator or speaker.

[0121] In some embodiments of the present application, the thermal conductivity of the elastic wave 420 is several times that of general metal materials such as copper and aluminum. This allows the heat of the actuator 410 to be mainly transferred to the housing 430 through the elastic wave 420, thereby reducing the temperature of the vibration output end of the actuator 410 and reducing the impact of local temperature on the image display quality of the display device.

[0122] In some embodiments, the damper 420 is bonded to the actuator 410 and the housing 430 , respectively. For example, the damper 420 is bonded to the actuator 410 and the housing 430 , respectively, by glue, and the connection method is simple and stable.

[0123] Reference Figures 10 to 12 In some possible implementations, the wave spring 420 includes stacked fiber layers 421 ;

[0124] In some embodiments, the damper 420 includes a stacked heat conducting layer 422 .

[0125] The fiber layer 421 includes, but is not limited to, mesh or fiberglass mesh, and has been resin-impregnated and cured. The thermally conductive layer 422 can be a graphene film, which can be made from flake graphite, oxidized to form a graphene oxide slurry, and then processed through coating, film formation, sintering, reduction, and calendering. Alternatively, the thermally conductive layer 422 can be formed by coating or spraying a thermally conductive material onto the fiber layer 421.

[0126] In some examples, the heat conductive layer 422 is flexible, so that the spider 420 can have a certain elastic deformation capability.

[0127] A possible manufacturing method for the elastic wave 420 includes: firstly, using flake graphite as the raw material, performing an oxidation and pulping process to form a graphene oxide slurry; then coating it as a base film, and then performing a sintering, reduction, and calendaring process to form a graphene membrane; secondly, using fiber mesh cloth as the raw material, impregnating the fiber mesh cloth with resin to form a fiber membrane; finally, stacking the graphene membrane and the fiber membrane, and embossing them into a wavy shape. After curing, the elastic wave 420 with high thermal conductivity is formed.

[0128] In some embodiments of the present application, the damper 420 utilizes a fiber layer 421 as a skeleton and is formed by combining the fiber layer 421 with a heat-conducting layer 422. This damper 420 is not only elastic but also has high thermal conductivity, facilitating the transfer of heat generated by the actuator 410 to the housing 430 while reducing the amount of heat generated by the actuator 410 that is transferred to the display panel.

[0129] In some embodiments, reference Figure 10 and Figure 12 The elastic wave 420 includes fiber layers 421 stacked together;

[0130] In some embodiments, the spider 420 includes a heat conductive layer 422 ;

[0131] In some embodiments, the fiber layer 421 is provided with two layers, and the heat conductive layer 422 is located between the two fiber layers 421 .

[0132] In other embodiments, referring to Figure 11 The elastic wave 420 includes fiber layers 421 stacked together;

[0133] In some other embodiments, the damper 420 includes a stacked heat-conducting layer 422 , wherein the heat-conducting layer 422 includes two layers, and the fiber layer 421 is located between the two heat-conducting layers 422 .

[0134] In some other embodiments, the spring wave 420 includes multiple fiber layers 421 ;

[0135] In some other embodiments, the damper 420 includes multiple heat-conducting layers 422 , where multiple fiber layers 421 and multiple heat-conducting layers 422 are alternately stacked.

[0136] In some embodiments of the present application, the damper 420 is provided with multiple fiber layers 421 to improve the structural strength of the damper 420 ; and is provided with multiple heat-conducting layers 422 to improve the thermal conductivity of the damper 420 .

[0137] Combine Figure 13In some embodiments, the heat-conducting layer 422 is in contact with the outer shell 430, which helps to improve the heat transfer efficiency and thus improve the heat dissipation efficiency of the actuator 410. When the heat-conducting layer 422 is located on at least one surface of the elastic wave 420, the surface is in direct contact with the outer shell 430; when the heat-conducting layer 422 is located in the inner layer of the elastic wave 420, for example, when the heat-conducting layer 422 is located between two fiber layers 421, the fiber layer 421 of the elastic wave 420 facing the outer shell 430 is provided with a gap, so that the heat-conducting layer 422 is arranged on the surface of the elastic wave 420 and thus in contact with the outer shell 430. Figure 9 The fiber layer 421 corresponding to the second connection portion 4203 of the wave damper 420 is provided with a notch, so that the heat conducting layer 422 is arranged on the surface of the wave damper 420 , and the surface is in contact with the housing 430 .

[0138] It is understandable that the heat conducting layer 422 may be in direct contact with the housing 430 , or when the heat conducting layer 422 is indirectly connected to the housing 430 through other components, the heat conducting layer 422 may be in indirect contact with the housing 430 through other components.

[0139] Combine Figures 14 to 16 In some possible embodiments of the present application, the damper 420 includes a stacked heat-conducting film 423 ;

[0140] In some embodiments, the spider 420 includes a fiber layer 421 ;

[0141] In some embodiments, the thermally conductive film 423 is provided with a plurality of through holes 4231. The material and preparation method of the fiber layer 421 can be the same as those in the above-described embodiment. The thermally conductive film 423 is then prepared and formed, and the thermally conductive film 423 is formed into an integrated elastic wave 420 through processes such as bonding or hot melting. 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 or a circular matrix. Some embodiments of the present application do not limit the number, shape, and arrangement of the through holes 4231.

[0142] The thickness of the thermally conductive film 423 can be 100μm to 1000μm. The thickness of the thermally 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.

[0143] In some embodiments of the present application, the damper 420 is provided with a fiber layer 421 as a skeleton, and a thermally conductive film 423 is provided with a plurality of through holes 4231 on the thermally conductive film 423 to improve the heat dissipation efficiency of the thermally conductive film 423 ; moreover, the thermally conductive film 423 can also have a certain degree of flexibility.

[0144] In some examples, reference Figure 16 The heat-conducting film 423 is provided with two layers, and the fiber layer 421 is provided between the two layers of heat-conducting film 423 .

[0145] In other examples, refer to Figure 14 and Figure 15 The fiber layer 421 is provided with two layers, and the thermal conductive film 423 is provided between the two fiber layers 421 .

[0146] In some other examples, the thermally conductive film 423 and the fiber layer 421 are respectively provided with multiple layers, and the thermally conductive film 423 and the fiber layer 421 are alternately stacked.

[0147] In some embodiments of the present application, the damper 420 is provided with multiple fiber layers 421 to improve the structural strength of the damper 420 ; and is provided with multiple thermally conductive films 423 to improve the thermal conductivity of the damper 420 .

[0148] For the damper 420 of this embodiment, the heat conductive film 423 is in contact with the housing 430 , which is beneficial to improving the heat transfer efficiency and further improving the heat dissipation efficiency of the actuator 410 .

[0149] Refer again Figure 9 In some embodiments of the present application, the actuator 400 further includes a pressure ring 440, which is configured to press the damper 420 against the housing 430 and has thermal conductivity. For example, the pressure ring 440 may be metal to ensure efficient heat transfer. The second connection portion 4203 of the damper 420 is pressed against the housing 430 by the pressure ring 440, thereby improving the stability and tightness of the connection between the damper 420 and the housing 430 and facilitating heat transfer.

[0150] For example, the pressure ring 440 and the housing 430 , as well as the pressure ring 440 and the damper 420 , can be bonded together, and the connection method is simple and stable.

[0151] 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, wherein the magnetic component 450 is configured to generate a magnetic field, and the voice coil vibrates along the axis direction of the voice coil in the magnetic field.

[0152] In some embodiments, the magnetic assembly 450 includes a magnetic conductive member 451;

[0153] In some embodiments, magnetic assembly 450 includes a magnetic member 452 , and a magnetic air gap N is formed between magnetic permeable member 451 and magnetic member 452 . Magnetic permeable member 451 is cylindrical with an opening, and magnetic member 452 is disposed on the bottom surface of magnetic permeable member 451 . A gap is formed between the inner wall surface of magnetic permeable member 451 and magnetic member 452 , forming magnetic air gap N. Magnetic assembly 450 is configured to provide a stable magnetic field in magnetic air gap N.

[0154] One end of the voice coil is connected to the light board 210. A sheet-like connecting structure 411 can also be provided between the voice coil and the light board 210 to increase the connection area between the voice coil and the light board 210 and prevent them from becoming detached from each other. The other end of the voice coil is inserted into the magnetic air gap N, and the voice coil is fixed to the housing 430 by a spring. As the magnetic field changes, the voice coil is forced to reciprocate along its own axis. In other words, when the exciter 400 is an electromagnetic exciter, the voice coil constitutes the actuator 410, and the end of the actuator 410 facing away from its vibration output end is located within the magnetic air gap N.

[0155] In this way, under the influence of the magnetic field, the electromagnetic force causes the voice coil to resonate at a higher frequency, directly vibrating the light board 210. The reaction force of the electromagnetic force causes the larger exciter 400 to resonate at a lower frequency, vibrating the light board 210 through the connector 211. The exciter 400 housing has no fixed support but vibrates with the vibration of the driven light board 210. This is the biggest difference between the OLED screen exciter housing fixed to the bracket excitation method.

[0156] The magnetic member 451 is fixedly connected to the housing 430, and the other end of the damper 420 is connected to the housing 430 through the magnetic member 451. Specifically, the second connecting portion 4203 of the damper 420 is pressed against the magnetic member 451 via the pressure ring 440. For example, the second connecting portion 4203 and the magnetic member 451, the pressure ring 440 and the magnetic member 451, and the pressure ring 440 and the housing 430 are bonded together, providing a simple and stable connection.

[0157] The exciter 400 of some embodiments of the present application reduces the width of the exciter 400 by connecting the elastic wave 420 to the housing 430 through the magnetic conductive member 451. Since the axial dimension of the actuator 410 is relatively large, the stacking and pressing of the pressure ring 440, the magnetic conductive member 451 and the housing 430 will not affect the overall thickness of the exciter 400. The connection method of the elastic wave 420 set in this way can not only ensure the stability of the connection, but also help to make the structure of the exciter 400 compact.

[0158] Specifically, the magnetic conductive component 451 of some embodiments of the present application includes a U-shaped body and a third connecting portion. The two ends of the opening of the U-shaped body are bent and extended away from each other to form the third connecting portion, which is connected to the shell 430.

[0159] Continue to refer to Figure 9 Ventilation holes are provided at the portion of the magnetic member 451 that contacts the damper 420 to improve the heat dissipation efficiency of the magnetic member 451 and the amount of heat dissipated by the actuator 410 through the damper 420. The ventilation holes may be circular holes, and some embodiments of the present application do not limit the shape, number, or arrangement of the ventilation holes.

[0160] In some possible embodiments, the portion of the housing 430 that contacts the magnetic conductive member 451 is provided with ventilation holes. The ventilation holes can be opposite the ventilation holes to further improve heat dissipation efficiency. The ventilation holes can be circular holes. Some embodiments of the present application do not limit the shape, number, or arrangement of the ventilation holes.

[0161] Reference Figure 17 The display device 10 in some embodiments of the present application further includes a back plate 500. The back plate 500 is disposed on a side of the light board 210 facing away from the display panel 100, that is, the back plate 500 is disposed on the rear side of the light board 210 and is configured to support the light board 210 and the display panel 100. The back plate 500 can be made of aluminum alloy, steel, etc. to provide effective support.

[0162] The backplate 500 is provided with an opening 503. The actuator 410 of the exciter 400 passes through the opening 503 and connects to the light panel 210 at its joint. This configuration eliminates the need for a convex portion of the backplate 500, requiring only the opening 503. This simplifies the structure of the backplate 500, facilitates manufacturing, and reduces costs. Furthermore, the backplate 500 is not present at the location corresponding to the exciter 400, which helps reduce the thickness of the display device.

[0163] In some embodiments, continue to refer to Figure 17 , the back plate 500 includes a back plate body 501;

[0164] In some embodiments, continue to refer to Figure 17 The back panel 500 includes a first side panel 502. The back panel body 501 is configured to support the light panel 210 and the display panel 100. An opening 503 is provided on the back panel body 501. The first side panel 502 extends along the edge of the back panel body 501 and protrudes from the back panel body 501 toward one side of the display panel 100. In other words, the first side panel 502 protrudes from the front side of the back panel body 501. In this way, the first side panel 502 is disposed around the outside of the light panel 210 and the display panel 100.

[0165] Continue to refer to Figure 17In some embodiments of the present application, the display device 10 further includes a first adhesive member 505 , which may be double-sided tape, foam, or the like. The first adhesive member 505 is configured to connect the back panel 500 and the light panel 210 . A plurality of first adhesive members 505 may be provided so that the spacing between the light panel 210 and the back panel 500 at different locations is within a preset range. In other words, the vibration amplitude at different locations of the light panel 210 is relatively uniform, thereby preventing noise from being generated during the vibration of the light panel 210 .

[0166] Furthermore, the first adhesive member 505 can be provided to limit the position of the lamp board 210 , thereby preventing the lamp board 210 from being deformed and affecting the vibration and sound generation after the display device 10 is assembled.

[0167] In some embodiments, the first adhesive member 505 is arranged between two adjacent light boards 210. At this time, the first adhesive member 505 constitutes a connecting member, so that the two adjacent light boards 210 are spliced through the first adhesive member 505. The first adhesive member 505 is arranged in this way. While multiple light boards 210 are spliced, the light board 210 and the back panel 500 are connected, which is conducive to simplifying the assembly process of the display device 10 and improving production efficiency.

[0168] Continue to refer to Figure 17 In some embodiments, the housing 430 of the actuator 400 is connected to the back plate 500 via a fixing pin 480 , and the fixing pin 480 may be perpendicular to the back plate 500 . An elastic pad 460 is provided on the housing 430 , and the housing 430 is connected to the back plate 500 via the elastic pad 460 .

[0169] Among them, the material of the elastic pad 460 can be silicone, rubber, etc., the elastic pad 460 can be sleeved on the outside of the fixing pin 480, a matching hole is set on the outer shell 430, and a snap-in groove for snapping with the outer shell 430 is provided on the outer wall surface of the elastic pad 460. In this way, there are partial elastic pads 460 on both sides of the matching hole, that is, the cross-sectional shape of the elastic pad 460 can be approximately I-shaped, so as to avoid interference between the outer shell 430 and the fixing pin 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.

[0170] The elastic force of the elastic pad 460 is parallel to the thickness of the display device 10, allowing the housing 430 and the back panel 500 to have a variable relative position. In other words, during the vibration of the actuator 400, the housing 430 can reciprocate relative to the back panel 500. In this case, the actuator 400 also drives the light panel 210 to vibrate in a manner similar to inertial drive, thus preventing the housing 430 and the back panel 500 from being fixed relative to each other and affecting the frequency response of the display device 10.

[0171] Reference Figure 18In 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 light board 210 facing the back panel 500. In this way, there is a large relative movement range between the housing 430 and the light board 210, which is conducive to realizing the exciter 400 driving the display panel 100 to vibrate in an inertial driving manner.

[0172] In this way, when the exciter 400 is working, the actuator 410 can generate a higher frequency vibration and drive the lamp board 210 to vibrate. Through the reaction force of the actuator 410, the shell 430 can drive the lamp board 210 to vibrate with a lower frequency vibration, that is, the shell 430 vibrates with the vibration of the lamp board 210, and the exciter 400 constitutes an inertial drive mode to drive the lamp board 210 to vibrate.

[0173] Continue to refer to Figure 17 and Figure 18 The display device of some embodiments of the present application further includes an optical film assembly 110 , and the display film layer 120 is the display film layer. The optical film assembly 110 is arranged on a side of the display film layer 120 facing the light board 210 .

[0174] The optical film assembly can be of different types depending on the type of light emitted by the light board 210. For example, when the light board 210 emits white light, the optical film assembly 110 can include a reflective sheet, a light guide plate, a brightness enhancement film, etc. The reflective sheet is attached to the surface of the light board 210 where the light source is located.

[0175] When the light board 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 arranged on the front side of the light board 210 and is configured to evenly mix the light from multiple light boards 210, that is, to convert the lighting board into a surface light board. The fluorescent film 112 converts the light emitted by the light board 210 into white light. In this way, the color of the light emitted by the light board 210 is not limited, and the light board 210 can emit blue light or purple light. The brightness enhancement film 111 is configured to increase the brightness of the light. It can be understood that when the light board 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 by taking the optical film assembly 110 including the diffusion film 113, the fluorescent film 112 and the brightness enhancement film 111 as an example.

[0176] In some embodiments, an edge of the display panel 100 is sealed to an edge of the light board 210 , so that a sealed cavity M is formed between the display panel 100 and the light board 210 .

[0177] In some embodiments, the display panel 100 and the optical film assembly 110 may be bonded and fixed in pairs, for example, by using photosensitive adhesive (UV adhesive), foam, double-sided tape, etc.

[0178] That is, the display panel 100 and the optical film assembly 110 can be fixedly connected as a whole by bonding. At this time, the cavity M is formed between the optical film assembly 110 and the light board 210.

[0179] When the display panel 100 and the optical film assembly 110 are pressed together, there may be gas gaps between the display panel 100 and the brightness enhancing film 111, between the brightness enhancing film 111 and the fluorescent film 112, and between the fluorescent film 112 and the diffusion film 113. A cavity M is formed between the display panel 100 and the light board 210, and the gas gap is in a closed state.

[0180] Specifically, the display device 10 includes a second adhesive member 250 having adhesive properties. The second adhesive member 250 is a double-sided tape or foam. The second adhesive member 250 extends along the edge of the light board 210. The optical film assembly 110 and the light board 210 are bonded and fixed via the second adhesive member 250. That is, the diffuser film 113 and the light board 210 are bonded and fixed via the second adhesive member 250. In this way, a closed cavity M is formed between the optical film assembly 110 and the light board 210. The cavity M can be filled with air, nitrogen, etc.

[0181] The cavity M is closed, that is, the gas in the cavity M and the outside air do not circulate with each other. The cavity M can be equivalent to a damping spring, configured to transmit vibration between the light board 210 and the display panel 100 .

[0182] Combine Figure 19 The display device of some embodiments of the present application further includes a support member 300 , which can be made of silicone or rubber. A plurality of support members 300 can be provided, and the plurality of support members 300 are spaced apart and arranged between the display panel 100 and the light board 210 .

[0183] In some embodiments, there are problems in the vibration transmission process of the exciter 400. The thickness of the air gap between the display panel 100 and the light board 210 varies greatly due to material tolerances, assembly process tolerances, and its own gravity, resulting in the inability to ensure the consistency of the vibration transmission efficiency. The fit between the display panel 100 and the light board 210 causes vibration noise and abrasion.

[0184] To avoid the aforementioned risks, some embodiments of the present application include a support member 300 between the display panel 100 and the light board 210. The support member 300 has the following features: one side contacts the display panel 100, and the other side contacts the light board 210. One or both sides are connected to the contact positions through a mechanical structure or a fixed method such as adhesive. The support member 300 may include a buffer portion, which may be made of, for example, a high-rebound material or a combination of materials with a rebound function, such as silicone. The support member 300 ensures the stability of the air gap between the display panel 100 and the light board 210, preventing abnormal collision noise between the display panel 100 and the light board 210. Furthermore, the solid support member 300 improves the efficiency of vibration transmission from the light board 210 to the display panel 100.

[0185] By setting a support member 300 between the lamp board 210 and the diffusion film 113, the optical film assembly 110 and the lamp board 210 can be connected as a whole, that is, it can be equivalent to a single-layer screen, avoiding relative movement between the optical film assembly 110 and the lamp board 210 due to the large gap in the cavity M.

[0186] Furthermore, since the optical film assembly 110 converts and evens out the light generated by the light source of the lamp panel 210, even if the support member 300 is provided on the light-emitting side of the lamp panel 210, no shadow will be generated on the display panel 100, resulting in uneven brightness of the display panel 100. In this way, there are no restrictions on the shape and size of the support member 300, the contact area between the support member 300 and the diffusion film 113, etc. The cross-section of the support member 300 (the cross-section is perpendicular to the display device) can be rectangular or cylindrical, such as Figure 19 As shown; the cross-sectional shape of the support member 300 may also be conical, trapezoidal, dumbbell-shaped or other shapes.

[0187] In some embodiments, the support member 300 is interference-fitted between the display panel 100 and the light board 210, that is, the combination of the two ends of the support member 300 with the display panel 100 and the light board 210 can adopt a dimensional interference fit design, that is, the dimension of the support member 300 along the thickness direction of the display device is larger than the design dimension of the interval between the display panel 100 and the light board 210.

[0188] In some embodiments, the support member 300 can be connected to the light display board 210 through a first adhesive structure, such as UV glue, double-sided tape, etc., to prevent the support member 300 from moving relative to the light board 210.

[0189] A welding structure is provided on the side of the support member 300 adjacent to the light board 210, and the support member 300 is fixed to the light board 210 via the welding structure. For example, a metal structure of a weldable material is injection-molded, mechanically fitted, or bonded to the support member 300, and the welded structure is fixed to the light board 210 by welding, thereby securing the support member 300. This method ensures a secure installation of the support member 300 and facilitates automated mass assembly.

[0190] Furthermore, the support member 300 can be made of an elastic material, such as silicone rubber. However, elastic materials can be affected by temperature, causing their hardness to change. Changes in the internal temperature of the display device during operation can cause changes in the hardness of the support member 300, thereby affecting its support and vibration transmission optimization. This can be optimized by using a dual-material composite approach: the elastic material portion ensures vibration cushioning, while the non-elastic material portion, namely the welded structure 320, ensures that the vibration transmission effect remains stable with temperature changes.

[0191] The two ends of the support member 300 can be connected by negative pressure adsorption. For example, suction cup structures can be provided at both ends of the support member 300. The two ends of the support member 300 are fixedly connected to the light board 210 and the display panel 100 respectively through the suction cup structure, and the process is simple to implement.

[0192] 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 light board 210 via the first adhesive structure, and the other end is fixedly connected to the display panel 100 via the suction cup structure. Thus, the support member 300 can be secured by double-sided bonding or mechanical fixing, thereby achieving vibration linkage between the light board 210 and the display panel 100 and improving vibration transmission efficiency. However, double-sided bonding or mechanical fixing have the disadvantage of complex process implementation. Using a suction cup solution can improve the feasibility of the solution.

[0193] Combine Figure 20 In some embodiments, a plurality of independent light panels 210 are formed by splicing together a connecting member 211 , and the connecting member 211 may be in a strip shape.

[0194] In some embodiments, the connectors 211 may include two types: first-type connectors and second-type connectors. The first-type connectors are located on the side of the light board 210 facing away from the display panel 100, and the vibration output end of the actuator 400 may be connected to the first-type connectors. The second-type connectors are located on the side of the light board 210 facing the display panel 100, and may connect the multiple support members 300 into one piece. For example, the second-type connectors are integrally formed with the multiple support members 300.

[0195] In some embodiments, a large number of support members 300 are installed, which leads to complex process difficulties. To optimize this problem, some embodiments of the present application connect the support members 300 into one through a second type of connector, effectively reducing the difficulty of installing the support members 300.

[0196] The display device in some embodiments of the present application further includes a rear housing (not shown in the accompanying drawings); the rear housing is located on the side of the driver 400 facing away from the light board 210, that is, the rear housing is disposed behind the driver 400. The rear housing may serve as the exterior housing of the display device. The controller, electrical connections, and the like of the display device may be disposed between the back panel 500 and the rear housing to simplify the appearance of the display device. The rear housing may be made of plastic, metal, or other materials.

[0197] Combine Figure 3 as well as Figures 21 to 25 The following describes the arrangement of the driver 400 when the driver 400 is connected to the light board 210.

[0198] The exciter 400 can drive the light board 210 to generate multiple sound zones. Different sound zones can correspond to different sound channels, so that the display device can have a multi-channel sound effect.

[0199] Multiple actuators 400 are provided, each connected to a portion of the light panels 210. These actuators 400 are configured to drive a portion of the light panels 210 to vibrate based on image information. This vibration, which is transmitted to the display panel 100, causes the display panel 100 to vibrate locally, producing sound. This improves the accuracy and sensitivity of the sound location, allowing the sound location on the display device to change as the image changes, achieving a sound-tracking effect.

[0200] Furthermore, the multiple lamp boards 210 are independent of one another. When one lamp board 210 equipped with an actuator 400 vibrates, it does not affect the other lamp boards 210, meaning that the other lamp boards 210 do not vibrate. Therefore, by driving only some lamp boards 210 to vibrate according to the displayed image, the actuator 400 can reduce the vibration mass and area, minimize energy attenuation, and improve the reliability of the lamp boards 210 and the optical structure. This prevents damage to the lamp boards 210 or wear on the optical film, thereby improving the image quality of the display device.

[0201] The light panels 210 can be Mini-LED panels, and the light from each light panel 210 can be independently controlled, enabling the display panel 100 to display images with higher positioning accuracy. Furthermore, the display device can also be a laser TV. Some embodiments of this application do not limit the specific image display principles of the display device; it is sufficient that the light panels 210 can be vibrated by the actuator 400 to produce vibrations and sounds from the display panel 100.

[0202] Combine Figure 3 and Figure 21 In some embodiments, the plurality of light boards 210 may include a first light board 210a and a second light board 210b. The first light board 210a is connected to at least one actuator 400, while the second light board 210b is not provided with an actuator 400. Each sound emission zone corresponds to at least one first light board 210a. Different sound emission zones are arranged adjacent to each other; alternatively, at least one second light board 210b is provided between different sound emission zones.

[0203] The exciter 400 directly drives the first lamp board 210a to vibrate. Since the first and second lamp boards 210a and 210b are independent of each other, even if a connector 211 is provided between two adjacent lamp boards, its elasticity ensures that vibration of one lamp board does not affect the other. Therefore, vibration of the first lamp board 210a does not affect the second lamp board 210b. The small vibration area formed by each first lamp board 210a improves vibration sensitivity and high-frequency ductility, thereby enhancing the sound performance of the display panel 100.

[0204] Since the exciter 400 directly drives the light board 210 to vibrate without providing a sound-generating plate structure, the thickness of the entire display device can be reduced, and the production cost of the product can be reduced.

[0205] For example, the plurality of light panels 210 can be divided into two rows arranged in an upper and lower arrangement. The lower row comprises a plurality of second light panels 210b, and the corresponding display panel 100 can produce bass sounds. The upper row comprises a plurality of first light panels 210a or a combination of first and second light panels 210a, 210b, for forming sound zones for each channel. The second light panels 210b in the lower row can form a bass zone 206 for producing low-frequency sounds.

[0206] Specific examples of different numbers of vocalization zones are described in detail below.

[0207] Please continue to refer to Figure 21 In a first possible implementation, the multiple sound zones may include a left main channel zone 201 and a right main channel zone 202. The left main channel zone 201 and the right main channel zone 202 are symmetrically arranged with respect to the central axis of the display device. Each of the left main channel zone 201 and the right main channel zone 202 corresponds to at least two first light panels 210a. A second light panel 210b is disposed between the left main channel zone 201 and the right main channel zone 202.

[0208] It is understood that two first light panels 210a can be provided in the left main channel area 201, and two first light panels 210a can be provided in the right main channel area 202. Each first light panel 210a is provided with an actuator 400, and each actuator 400 independently drives each first light panel 210a to vibrate. This prevents the vibrations of the left main channel area 201 and the right main channel area 202 from affecting each other.

[0209] Please refer to Figure 22 In a second possible implementation, the multiple sound emission zones may include a left main channel zone 201, a right main channel zone 202, and a center channel zone 203. The left main channel zone 201, the center channel zone 203, and the right main channel zone 202 are arranged adjacent to each other along the length of the display panel 100. Each of the left main channel zone 201, the center channel zone 203, and the right main channel zone 202 corresponds to at least two first light panels 210a. A second light panel 210b is provided on the side of the left main channel zone 201 facing away from the center channel zone 203. A second light panel 210b is provided on the side of the right main channel zone 202 facing away from the center channel zone 203.

[0210] It's understood that two first light panels 210a can be provided for the left main channel area 201, two first light panels 210a can be provided for the right main channel area 202, and two first light panels 210a can be provided for the center channel area 203. Each first light panel 210a is equipped with an actuator 400, which independently drives the vibration of each first light panel 210a. This prevents the vibrations of the left main channel area 201, right main channel area 202, and center channel area 203 from interfering with each other.

[0211] Please refer to Figure 23 In a third possible implementation, the multiple sound emission zones may include a left main channel zone 201, a right main channel zone 202, a center channel zone 203, a left surround channel zone 204, and a right surround channel zone 205. The left surround channel zone 204, the left main channel zone 201, the center channel zone 203, the right main channel zone 202, and the right surround channel zone 205 are arranged adjacent to each other in sequence along the length of the display panel 100. The second sound emission panel is disposed below the sound emission zone.

[0212] It is understandable that the difference from the previous implementation method is the addition of a left surround channel area 204 and a right surround channel area 205. The left surround channel area 204 can be provided with a corresponding first light panel 210a, and the right surround channel area 205 can be provided with a corresponding first light panel 210a. Each first light panel 210a is provided with an exciter 400, and each exciter 400 independently drives each first light panel 210a to vibrate. This prevents the vibrations of the left main channel area 201, the right main channel area 202, the center channel area 203, the left surround channel area 204, and the right surround channel area 205 from interfering with each other. The left and right channels and the surround channels can all emit sound in front of the display panel 100 of the display device, achieving a better sound effect.

[0213] Please refer to Figure 24 In a fourth possible implementation, the multiple sound zones may include a left main channel zone 201, a right main channel zone 202, a left surround channel zone 204, and a right surround channel zone 205. This fourth implementation differs from the third implementation in that the center channel zone 203 is not provided. The specific layout of the light panel 210 for this implementation is not further described in some embodiments of this application.

[0214] It should be noted that in some embodiments of the present application, more sound zones may be provided, and other arrangements of sound zones may be adopted, provided that the first lamp panels 210a corresponding to the respective sound zones are independent of each other and are directly driven to vibrate by different exciters 400. Each lamp panel 210 may be provided with one, two or more exciters 400, and the exciters 400 may be arranged at intervals in the horizontal direction, or, please refer to Figure 25 The exciters 400 may be arranged at intervals along the vertical direction, and some embodiments of the present application do not make specific limitations on this.

[0215] In some embodiments of this application, different exciters drive different light panels for localized sound generation. This prevents the different light panels from interfering with each other during vibration, improving the reliability of the vibration sound generation. While achieving audio-visual synchronization, this reduces vibration energy attenuation, enhances mid- and high-frequency sound effects, and prevents damage to the light panels or wear on the optical diaphragm. Furthermore, light panels in different areas can be individually controlled by the exciters to generate localized vibration sound based on the image, achieving the effect of sound tracking the image.

[0216] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0217] For ease of explanation, the above description has been made with reference to specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments are selected and described to better explain the principles and practical applications, so that those skilled in the art can better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that: include: a display panel configured to display image information; a light board, wherein a plurality of light boards are provided and spliced with each other, the light board is configured to provide backlight for the display panel, and a cavity is formed between the light board and the display panel; An exciter, which is arranged on a side of the light board away from the display panel and drives the light board to vibrate; the exciter includes: shell, an actuating member, wherein a vibration output end of the actuating member is connected to the light board; The damper is connected between the actuator and the housing, and is configured to transfer heat from the actuator to the housing.

2. The display device according to claim 1, wherein The elastic wave comprises a fiber layer and a heat conducting layer which are stacked.

3. The display device according to claim 2, wherein The heat conductive layer contacts the housing.

4. The display device according to claim 1, wherein The damper comprises a stacked fiber layer and a heat-conducting layer, wherein the fiber layer is provided with two layers, and the heat-conducting layer is located between the two fiber layers; or The damper comprises a fiber layer and a heat-conducting layer stacked together, wherein the heat-conducting layer comprises two layers, and the fiber layer is located between the two layers of the heat-conducting layer; or The damper comprises multiple fiber layers and multiple heat-conducting layers, and the multiple fiber layers and the multiple heat-conducting layers are alternately stacked.

5. The display device according to claim 1, wherein The damper includes a stacked heat-conducting film and a fiber layer, and the heat-conducting film is provided with a plurality of through holes.

6. The display device according to claim 5, wherein: The heat-conducting film is provided with two layers, and the fiber layer is provided between the two layers of the heat-conducting film; or, The fiber layer is provided with two layers, and the heat-conducting film is provided between the two fiber layers; or, The heat-conducting film and the fiber layer are respectively provided with multiple layers, and the heat-conducting film and the fiber layers are alternately stacked.

7. The display device according to claim 1, wherein The actuator further includes a pressure ring configured to press the spider against the housing.

8. The display device according to claim 1, wherein The actuator further includes a magnetic assembly, the magnetic assembly including a magnetic conductive member and a magnetic member, a magnetic air gap is formed between the magnetic conductive member and the magnetic member, and an end of the actuator away from the vibration output end thereof is located in the magnetic air gap; The other end of the elastic wave is connected to the housing through the magnetic conductive component.

9. The display device according to claim 8, wherein A ventilation hole is provided on the portion of the magnetic conductive member that contacts the elastic wave.

10. The display device according to any one of claims 1 to 9, characterized in that: Two adjacent lamp panels are spliced together through a connecting piece, and the vibration output end of the actuator is connected to the connecting piece.

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