Display device

Abstract

The embodiment of the invention relates to the display technology, in particular to display equipment. The display device comprises the display panel, the backlight assembly and the exciter, the exciter drives the display panel to vibrate and produce sound through the cavity between the backlight assembly and the display panel, the acoustic effect is good, and sound and picture integration is easy to achieve. Besides, the actuating piece of the exciter easily generates a large amount of heat due to reciprocating vibration, the exciter body and the actuating piece are connected through the damper, the heat generated by vibration of the actuating piece is transmitted to the exciter body for heat dissipation, in this way, heat generated by the actuating piece can be dissipated through the damper besides air, 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 display technology, and in particular, 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 the related art, a sound exciter is provided on the display device to vibrate the display panel to realize screen sound, that is, the display panel has both display and sound functions to achieve an audio-visual effect of integration of sound and picture.

[0004] However, the sound exciter has poor heat dissipation performance, and the 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. Summary of the Invention

[0005] Some embodiments of the present application provide a display device that can realize the vibration and sound generation of a display screen, and an actuator of an exciter that generates vibration can dissipate heat through elastic waves.

[0006] Some embodiments of the present application provide a display device, comprising:

[0007] a display panel configured to display image information;

[0008] a backlight assembly configured to provide backlight to the display panel; a cavity is formed between the backlight assembly and the display panel;

[0009] an actuator, disposed on a side of the backlight assembly facing away from the display panel, the actuator being configured to drive the backlight assembly to vibrate; the actuator comprising:

[0010] The exciter body,

[0011] an actuator connected to the backlight assembly,

[0012] The two ends of the damper are respectively connected to the actuator body and the actuator, and the damper is used to transfer the heat of the actuator to the actuator body.

[0013] 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 backlight assembly; and provides an actuator to generate sound and vibration for the display panel. The actuator is located on the side of the backlight assembly facing away from the display panel, so that the actuator's placement does not affect the display function of the display panel. The actuator drives the display panel to vibrate and generate sound through the cavity between the backlight assembly and the display panel, resulting in a good acoustic effect and facilitating the integration of sound and image. Furthermore, the actuator of the actuator tends to generate a large amount of heat due to its reciprocating vibration. By providing a spring to connect the actuator body and the actuator, the heat generated by the actuator's vibration is transferred to the actuator body for dissipation. In this way, the heat generated by the actuator can be dissipated not only through air but also through the spring to dissipate heat. This helps to reduce the temperature of the actuator, reduce the impact of local temperature on image display quality, and improve the image display quality of the display device.

[0014] In some embodiments of the present application, the damper has a heat-conducting layer, and the heat-conducting layer is in contact with the actuator body.

[0015] In some embodiments of the present application, the damper includes a thermally conductive layer that facilitates heat transfer, allowing heat generated by the actuator to be transferred to the actuator body for dissipation, thereby reducing the impact of the actuator heat on image display quality. The thermally conductive layer is in contact with the actuator body, which helps improve heat transfer efficiency and, in turn, improves the heat dissipation efficiency of the actuator.

[0016] In some embodiments of the present application, the damper further includes a fiber layer, and the heat conductive layer and the fiber layer are stacked and formed into an integral piece.

[0017] In some embodiments of the present application, the damper utilizes a fiber layer as a skeleton and is formed by combining the fiber layer with a heat-conducting layer. This damper is not only elastic but also has high thermal conductivity, facilitating the transfer of heat generated by the actuator to the actuator body while reducing the amount of heat transferred to the display panel.

[0018] In some embodiments of the present application, there are multiple fiber layers or multiple heat-conducting layers, and the fiber layer is adjacent to the heat-conducting layer.

[0019] In some embodiments of the present application, the damper improves the structural strength and thermal conductivity of the damper by providing fiber layers and heat-conducting layers that are alternately stacked.

[0020] In some embodiments of the present application, the heat-conducting layer is a heat-conducting film, and a plurality of through holes are provided on the heat-conducting film.

[0021] In some embodiments of the present application, the damper improves the heat dissipation efficiency of the thermally conductive film by providing a fiber layer as a skeleton and providing a thermally conductive film with multiple through holes. In addition, the thermally conductive film can also have a certain degree of flexibility.

[0022] In some embodiments of the present application, the exciter further includes a pressure ring, which is configured to press the elastic wave against the exciter body.

[0023] In some embodiments of the present application, a pressure ring is used to press the damper onto the actuator body, thereby improving the stability and tightness of the connection between the damper and the actuator body and facilitating heat transfer.

[0024] In some embodiments of the present application, the exciter body includes a magnetic component, the magnetic component includes a magnetic conductive part and a magnetic part, a magnetic air gap is formed between the magnetic conductive part and the magnetic part, and an end of the actuator away from its vibration output end is located in the magnetic air gap; one end of the elastic wave is connected to the magnetic conductive part.

[0025] The exciter of some embodiments of the present application reduces the width of the exciter by connecting the elastic wave with the magnetic conductive part. Since the axial dimension of the actuator is relatively large, the stacking and pressing of the pressure ring, the magnetic conductive part and the shell will not affect the overall thickness of the exciter. The connection method of the elastic wave set in this way can not only ensure the stability of the connection, but also help to make the exciter structure compact.

[0026] In some embodiments of the present application, a portion of the magnetic conductive member that contacts the elastic wave is provided with a ventilation hole.

[0027] In some embodiments of the present application, ventilation holes are provided on the magnetic conductive member to improve the heat dissipation efficiency of the magnetic conductive member and increase the heat dissipation of the actuator through the elastic wave.

[0028] In some embodiments of the present application, the damper includes a main body and a first connecting portion and a second connecting portion provided at both ends of the main body, the first connecting portion is connected to the actuator, and the second connecting portion is connected to the exciter body.

[0029] In the embodiment of the present application, the damper increases the connection area with the actuator by providing a first connection portion, and increases the connection area with the exciter body by providing a second connection portion, which not only helps to improve the stability of the connection, but also helps to improve the heat dissipation effect.

[0030] In some embodiments of the present application, the display device also includes a rear shell, which is located on the side of the backlight assembly facing away from the display panel; the exciter is located between the rear shell and the backlight assembly, and the actuator of the exciter is also connected to the rear shell to drive the rear shell to vibrate and make sound.

[0031] In some embodiments of the present application, a rear cover is provided to shield and protect the exciter and the backlight assembly from the rear side of the display device; and the actuator of the exciter is connected to the rear cover to drive the rear cover to vibrate and produce sound, so that the display device can produce sound from both the front and rear sides, thereby improving the sound intensity of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the implementation methods in the embodiments of the present application or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technology descriptions. 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.

[0033] Figure 1 A schematic diagram of an operation scenario between a display device and a control device according to some embodiments of the present application;

[0034] Figure 2 A block diagram of a display device according to some embodiments of the present application;

[0035] Figure 3 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0036] Figure 4 A schematic cross-sectional view of another display device according to some embodiments of the present application;

[0037] Figure 5 A schematic cross-sectional view of another display device according to some embodiments of the present application;

[0038] Figure 6 Schematic diagram of the arrangement of connectors and actuators in some embodiments of the present application;

[0039] Figure 7 A schematic cross-sectional view of an actuator according to some embodiments of the present application;

[0040] Figure 8 A schematic cross-sectional view of a spring wave according to some embodiments of the present application;

[0041] Figure 9 This is a schematic diagram of the structure of a spring in some embodiments of the present application;

[0042] Figure 10 This is a schematic diagram of another structure of a spring in some embodiments of the present application;

[0043] Figure 11 A schematic cross-sectional view of another type of damper according to some embodiments of the present application;

[0044] Figure 12 This is a schematic diagram of another structure of a spring in some embodiments of the present application;

[0045] Figure 13 This is a schematic diagram of another structure of a spring in some embodiments of the present application;

[0046] Figure 14A schematic cross-sectional view of another display device according to some embodiments of the present application;

[0047] Figure 15 A schematic cross-sectional view of another display device according to some embodiments of the present application;

[0048] Figure 16 This is a schematic structural diagram of an actuator according to some embodiments of the present application;

[0049] Figure 17 A schematic cross-sectional view of another display device according to some embodiments of the present application;

[0050] Figure 18 Schematic diagram of the arrangement of support members and connecting members in some embodiments of the present application;

[0051] Figure 19 This is a schematic cross-sectional view of a display device according to some embodiments of the present application.

[0052] Description of reference numerals:

[0053] 10: Display device; 20: Smart device; 30: Server;

[0054] 100: display panel; 110: optical film assembly; 111: brightness enhancement film; 112: fluorescent film; 113: diffusion film; 120: display film layer;

[0055] 200: backlight assembly; 210: lamp board; 211: connector; 212: sound board; 230: board body; 240: light source; 250: second adhesive member;

[0056] 300: support member;

[0057] 400: actuator; 401: actuator body; 410: actuator; 411: connection structure; 420: damper; 4201: body; 4202: first connection part; 4203: second connection part; 421: fiber layer; 422: heat-conducting layer; 423: heat-conducting film; 4231: through hole; 430: housing; 440: pressure ring; 450: magnetic component; 451: magnetic conductive component; 452: magnetic component; 460: elastic pad; 470: damping block; 480: fixing pin; 490: vibration transmission structure; 491: viscous buffer structure;

[0058] 500: back panel; 501: back panel body; 502: first side panel; 503: opening; 504: convex bump; 505: first adhesive member;

[0059] 700: back shell;

[0060] 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;

[0061] M: cavity; N: magnetic air gap. DETAILED DESCRIPTION

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] Conventional display devices, such as televisions, are equipped with speakers to output sound. These speakers are typically mounted on the bottom or back of the display device, resulting in a separation between the sound and image positions, a poor viewing experience, and the inability to provide a unified audiovisual experience. In related technologies, an actuator is provided on the display device to enable the display panel to generate sound on the screen, allowing the display panel to have both display and sound functions, achieving a unified audiovisual experience.

[0069] The exciter of the 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.

[0070] 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.

[0071] In view of this, some embodiments of the present application provide a display device, whose exciter includes an actuator, a spring, and an exciter body. The spring is connected to the actuator and the exciter body, respectively. The spring transfers heat from the actuator to the exciter body for heat dissipation, thereby lowering the temperature of the actuator and reducing the impact of local temperature on image display quality.

[0072] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] In some embodiments, the display device 10 includes a controller 905;

[0080] 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.

[0081] In some embodiments, the display device 10 includes an audio output interface 907;

[0082] In some embodiments, the display device 10 includes a memory 908;

[0083] In some embodiments, the display device 10 includes a power supply 909;

[0084] 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).

[0085] In some embodiments, the controller includes a processor;

[0086] In some embodiments, the controller includes a video processor;

[0087] In some embodiments, the controller includes an audio processor;

[0088] In some embodiments, the controller includes a graphics processor;

[0089] In some embodiments, the controller includes RAM;

[0090] In some embodiments, the controller includes a ROM;

[0091] In some embodiments, the controller includes first to nth interfaces configured to input / output signals.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] In some embodiments, the display device 10 includes a display panel 100 , which is configured to display graphic information such as text and images;

[0099] In some embodiments, the display device 10 includes a backlight assembly 200 configured to provide backlight for the display panel 100 ;

[0100] In some embodiments, the display 906 includes a display panel 100 and a backlight assembly 200;

[0101] In some embodiments, the display device 10 includes an actuator 400 , which is disposed on a side of the backlight assembly 200 facing away from the display panel 100 , and the actuator 400 is configured to drive the backlight assembly 200 to vibrate.

[0102] Exemplarily, the backlight assembly 200 includes a light board 210 ; the light board 210 includes a board body 230 and a light source 240 disposed on the board body 230 . The light source 240 is located on the side of the board body 230 facing the display panel 100 . The board body 230 may be an aluminum plate, a printed circuit board (PCB), or the like. The light source 240 may be a light-emitting diode (LED), a submillimeter light-emitting diode (Mini-LED), or a micro-light-emitting diode (Micro-LED). There may be multiple light sources 240, spaced apart on the board body 230 .

[0103] In some embodiments, considering factors such as the size of the display device 10 and the manufacturing process of the light board 210, the backlight assembly 200 includes multiple light boards 210, and the multiple light boards 210 are arranged in an array. Figure 6 The backlight assembly 200 includes six lamp boards 210 , three lamp boards 210 are arranged along the transverse direction of the display device 10 , and two lamp boards 210 are arranged along the longitudinal direction of the display device 10 .

[0104] In the embodiment of the present application, the display panel 100 is a liquid crystal display panel, and a plurality of light panels 210 are arranged in a matrix on the back of the display panel 100 to provide backlight for the display panel 100. The actuator 400 vibrates the light panels 210 and then transmits the vibration to the display panel 100, so that the light panels 210 do not affect the backlight provided by the display panel 100.

[0105] like Figure 3 As shown, in some embodiments, a cavity M is formed between the lamp board 210 of the backlight assembly 200 and the display panel 100. The air within the cavity M does not circulate with the outside air, making the cavity M a sealed cavity. The light source 240 of the lamp board 210 is located within the cavity M. The air within the cavity M is viscous, with a kinematic viscosity much higher than that of water. The cavity M can function as a damping spring, configured to transmit vibrations between the lamp board 210 and the display panel 100, causing the display panel 100 to vibrate and produce sound.

[0106] In some embodiments of the present application, 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 via 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, thereby causing the display panel to vibrate. The display panel then generates sound through the sound waves generated by the vibrations, allowing the display panel to both display images and produce sound in place of a speaker.

[0107] The gap size of the cavity M can be determined based on the size of the light source 240 of the light board 210, for example, the gap size is related to the size of the light source. Sub-millimeter light-emitting diodes (such as Mini-LEDs) and other light sources have relatively compact dimensions, which correspondingly results in a smaller gap in the cavity M between the light board 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).

[0108] 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 can 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 the embodiments of the present 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.

[0109] Considering that there are usually multiple lamp boards 210 and the thickness of the lamp board 210 is relatively small, it is easy to deform under the action of vibration force. Figure 3 In some embodiments of the present application, the backlight assembly 200 further includes a sound-emitting plate 212. The thickness of the sound-emitting plate 212 can be 1 mm to 4 mm, for example, 1 mm to 2 mm, 2 mm to 3 mm, or 3 mm to 4 mm. Exemplary thicknesses include 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 2.2 mm, 2.5 mm, 2.7 mm, 3 mm, 3.3 mm, 3.5 mm, 3.8 mm, or 3.9 mm. The sound-emitting plate 212 is attached to a side of the board body 230 facing away from the display panel 100. For example, the sound-emitting plate 212 is bonded to the light board 210 using an adhesive such as double-sided tape. In this way, the plurality of light boards 210 are connected to the sound-emitting plate 212 as a whole, with a tight seam between adjacent light boards 210.

[0110] In some embodiments, the light board 210 can also dissipate heat through the sound board 212. For example, the sound board 212 includes a metal layer, which transfers the heat of the light board 210 through contact and dissipates the heat, thereby playing a role in dissipating heat for the light board 210.

[0111] In some embodiments, the sounding board 212 may be a sandwich panel or a carbon fiber panel. The sandwich panel may be any one of a honeycomb sandwich panel, a foam sandwich panel, a wood sandwich panel, and an acrylic panel, which are low-cost and readily available. The honeycomb sandwich panel may be an aluminum honeycomb sandwich panel, an aramid honeycomb sandwich panel, or the like. The foam sandwich panel may be a polyvinyl chloride (PVC) foam sandwich panel, a polymethacrylimide (PMI) foam sandwich panel, or the like. The wood sandwich panel may be a balsa wood, or other balsa wood.

[0112] Those skilled in the art are well aware that sound quality can be measured in terms of volume, frequency response range, timbre, and other aspects. Specifically, the sound produced by the sandwich panel has a higher volume and a wider, less undulating audio response than the sound produced by the aluminum panel. In other words, by providing the sound-generating panel 212, the sound produced by the display device can have better sound quality.

[0113] In some embodiments, a sandwich panel includes a core and skins, which are attached to opposite sides of the core. The skins can be made of glass fiber cloth, carbon fiber cloth, glass-carbon hybrid fiber, aluminum foil, plastic, etc. The core can be made of paper, aramid, metal, or other rigid foam materials.

[0114] In some embodiments, the damping of the sounding plate 212 is greater than that of the plate body 230 , and its density and mass are smaller than those of the plate body 230 in the related art.

[0115] By providing a sound-generating panel 212 with greater damping, the equivalent damping of the lamp panel 210 can be increased, the equivalent density of the lamp panel 210 can be reduced, the bending modulus of the lamp panel 210 can be increased, the number of modal resonance frequencies can be increased, the frequency response transmitted to the display panel 100 can be improved, the frequency range of the sound emitted by the display panel 100 can be expanded, and the audio response of the display panel 100 can be prevented from producing obvious peaks and valleys and distortion, which affects the listening experience.

[0116] In some embodiments, the sounding board 212 is a continuous solid structure, which can reduce the reflection of sound waves in the gap between two adjacent light boards 210 and avoid distortion of the excited sound waves due to multiple reflections in the gap.

[0117] It is understandable that a plurality of lamp panels 210 are arranged in an array on the sound-generating board 212. Considering the acoustic effect of the display device, the smaller the gap between two adjacent lamp panels 210, the better, so as to avoid the gap between two adjacent lamp panels 210 causing segmentation vibration and affecting the acoustic effect. However, if the gap between two adjacent lamp panels 210 is too small, the lamp panels 210 will collide with each other when vibrating, thereby generating noise. Therefore, it is necessary to strictly control the gap between two adjacent lamp panels 210, wherein the gap between two adjacent lamp panels 210 can be 1mm-2mm, for example, 1.2mm-1.3mm, 1.3mm-1.4mm, 1.4mm-1.5mm, 1.5mm-1.6mm, 1.7mm-1.8mm, 1.8mm-1.9mm, 1.9mm-2mm. Exemplarily, the gap between two adjacent lamp boards 210 may be 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, etc.

[0118] In some embodiments, to control the gap between two adjacent light panels 210, multiple positioning structures can be used to position the light panels 210 and the sounding panels 212 during assembly. Positioning members are provided on one of the light panels 210 and the sounding panels 212, and correspondingly, positioning holes are provided on the other of the light panels 210 and the sounding panels 212 for the positioning members to pass through, thereby ensuring a sufficient gap between the two adjacent light panels 210.

[0119] Continue to refer to Figure 3 In some embodiments, the sounding board 212 can be a single piece of board, and all the light boards 210 are arranged on the sounding board 212, which facilitates the assembly of the light boards 210. The vibration output end of the actuator 400 is connected to the side of the sounding board 212 facing away from the light boards 210. In this way, the installation of the actuator 400 does not affect the light boards 210 providing backlight for the display panel 100.

[0120] Combine Figure 4 In other embodiments, the sounding board 212 is a strip-shaped board that is only connected to a portion of the light boards 210. For example, the strip-shaped sounding board 212 can be set at the joint between two adjacent light boards 210. This can not only ensure the structural strength of the light boards 210, but also reduce the material used for the sounding board 212, thereby reducing the overall weight of the display device.

[0121] Multiple independent light panels 210 can be joined together via connectors 211 to form a single unit. Connectors 211 can be adhesives, such as double-sided tape or foam, for easy and convenient connection. Alternatively, connectors 211 can include a base layer and an adhesive backing disposed on the base layer, which connects two adjacent light panels 210 together. The sounding board 212 is integrated with the light panels 210 via connectors 211.

[0122] One or more strip-shaped sounding plates 212 may be provided, and the strip-shaped sounding plates 212 may be arranged at intervals along the length direction of the display panel 100. The embodiment of the present application does not limit the number of the strip-shaped sounding plates 212.

[0123] In this embodiment, the vibration output end of the exciter 400 is connected to the strip-shaped sounding plate 212. One exciter 400 can be provided on one strip-shaped sounding plate 212, or multiple exciters 400 can be provided on one strip-shaped sounding plate 212, with the multiple exciters 400 being spaced apart along the length of the strip-shaped sounding plate 212.

[0124] In other embodiments, combined Figure 5 The backlight assembly 200 does not have a sound-generating plate. Instead, it includes multiple light panels 210 and connectors 211. The individual light panels 210 can be joined together via connectors 211 to form a single unit. This arrangement allows the exciter 400 to directly transmit vibrations to the multiple light panels 210, resulting in a relatively small vibration mass and slow energy decay. Furthermore, the exciter 400 supports the light panels 210, eliminating the need for a sound-generating plate. This simplifies assembly of the display device and reduces overall thickness.

[0125] The vibration output end of the exciter 400 is connected to the joint of the light board 210. Specifically, the vibration output end of the exciter 400 is connected to the light board 210 via the connector 211. The exciter 400 drives the light board 210 to vibrate, and the cavity M, which is equivalent to a damping spring, transmits the vibration force to the display panel 100, causing the display panel 100 to vibrate and produce sound.

[0126] Reference Figure 6 , multiple lamp panels 210 are arranged in an array and spliced together, and the splicing gaps of the lamp panels 210 are divided into two types.

[0127] In some embodiments, the splicing seam extends in the transverse direction of the display device and can be defined as a transverse splicing seam; accordingly, the connecting member 211 includes a transverse connecting member extending in the transverse direction of the display device.

[0128] In some embodiments, the splicing seam extends in the longitudinal direction of the display device and can be defined as a longitudinal splicing seam; accordingly, the connector 211 includes a longitudinal connector extending in the longitudinal direction of the display device.

[0129] In some embodiments, the exciter 400 can be set on the transverse connecting member. Multiple exciters 400 can be set, and multiple exciters 400 can be arranged at intervals in the extension direction of the transverse connecting member; multiple exciters 400 are arranged in a rectangular matrix on multiple transverse connecting members.

[0130] In some embodiments, the exciter 400 can be set on the longitudinal connector. Multiple exciters 400 can be set, and multiple exciters 400 can be arranged at intervals in the extension direction of the longitudinal connector; multiple exciters 400 are arranged in a rectangular matrix on multiple longitudinal connectors.

[0131] In some embodiments, the exciter 400 can be set on the transverse connector and the longitudinal connector at the same time, 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.

[0132] Among them, the transverse connecting member can extend to the two transverse ends of the light board 210, or, the two ends of the transverse connecting member do not extend to the two transverse ends of the light board 210, and the extension length of the transverse connecting member is less than the transverse dimension of the light board 210; for the whole formed by splicing all the light boards 210, multiple transverse connecting members can be set on one transverse splicing seam; or, there is one transverse connecting member, and the two ends of the transverse connecting member extend to the two ends of the transverse splicing seam; such a setting is conducive to ensuring the reliability of the splicing of the light board 210.

[0133] Among them, the longitudinal connector can extend to the two longitudinal ends of the light board 210, or, the two ends of the longitudinal connector do not extend to the two longitudinal ends of the light board 210, and the extension length of the longitudinal connector is less than the longitudinal dimension of the light board 210; for the whole formed by splicing all the light boards 210, there can be multiple longitudinal connectors on a longitudinal splicing seam; or, there is one longitudinal connector, and the two ends of the longitudinal connector extend to the two ends of the longitudinal splicing seam; such a setting is conducive to ensuring the reliability of the splicing of the light board 210.

[0134] 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.

[0135] Combine Figure 7The exciter 400 of the embodiment of the present application includes: a spring 420; the spring 420 is spaced apart from the backlight assembly 200, and the spring 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.

[0136] In some embodiments, the actuator 400 further includes an actuator body 401 for mounting the actuator 400 .

[0137] In some embodiments, the actuator 400 further includes an actuator 410 , a vibration output end of the actuator 410 is connected to the backlight assembly 200 ; 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 actuator body 401 .

[0138] 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 through 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.

[0139] 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 7 Middle vertical direction.

[0140] 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.

[0141] 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 .

[0142] In some embodiments of the present application, the central axis of the damper 420 coincides with the central axis of the actuator 400. The damper 420 includes a main body 4201 and first and second connecting portions 4202 and 4203 disposed at either end of the main body 4201. The main body 4201 is arranged in a plane parallel to the display panel. It is annular and radially wavy, imparting elasticity to the damper 4200. The inner end of the main body 4201 is bent to form the first connecting portion 4202, which is connected to the actuator 410. The outer end of the main body 4201 is bent to form the second connecting portion 4203, which is connected to the actuator body 401.

[0143] In some embodiments, the first connection portion 4202 is a sheet-shaped connection portion, which can increase the connection area between the first connection portion 4202 and the actuator 410, which not only ensures the stability of the connection, but also facilitates heat transfer and heat dissipation.

[0144] In some embodiments, the second connection portion 4203 is a sheet-shaped connection portion, which can increase the connection area between the second connection portion 4203 and the actuator body 401, which not only helps to improve the stability of the connection, but also facilitates heat transfer and heat dissipation.

[0145] In some embodiments of the present application, actuator 400 employs dampers 420 to transfer heat generated by the vibration of actuator 410 to actuator body 401 for dissipation. This allows heat generated by actuator 410 to be dissipated not only through air but also through dampers 420, thereby lowering the temperature of actuator 410 and minimizing the impact of local temperature on image display quality. Furthermore, the provision of first connection portion 4202 increases the connection area with actuator 410, while the provision of second connection portion 4203 increases the connection area with actuator body 401, both improving connection stability and heat dissipation.

[0146] 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.

[0147] In some embodiments, the damper 420 is bonded to the actuator 410 and the actuator body 401 respectively. For example, the damper 420 is bonded to the actuator 410 and the actuator body 401 respectively by glue, and the connection method is simple and stable.

[0148] Reference Figure 7 and Figure 8 In some embodiments of the present application, the damper 420 includes a heat-conducting layer 422. This facilitates heat transfer, allowing heat generated by the actuator 410 to be transferred to the actuator body 401 for dissipation, thereby reducing the impact of heat from the actuator 410 on image display quality. The heat-conducting layer 422 has a high thermal conductivity and can be made of metal, graphite, or other materials.

[0149] In some examples, the heat conductive layer 422 is flexible, so that the spider 420 can have a certain elastic deformation capability.

[0150] Continue to refer to Figure 7 and Figure 8 In some embodiments, the damper 420 further includes a fiber layer 421, which is stacked with a heat conducting layer 422. The fiber layer 421 includes but is not limited to mesh, glass fiber mesh, etc.

[0151] A possible preparation method for the Tapper 420 includes:

[0152] Step 1: Provide a fiber layer 421 and form a heat-conducting layer 422 on the fiber layer 421 to form a spring-loaded base membrane;

[0153] Step 2: The elastic wave base film is embossed and cured to form elastic waves 420 .

[0154] In one implementation of step 1, a heat-conducting material is coated or sprayed on the fiber layer 421 to form the heat-conducting layer 422. Alternatively, a heat-conducting film is attached to the fiber layer 421 by bonding or thermoforming to form the heat-conducting layer 422.

[0155] In step 2, the elastic wave base film is embossed in a mold and cured to form elastic waves 420. The elastic wave base film is ring-shaped and is formed after embossing and cooling and curing.

[0156] In some embodiments of the present application, the damper 420 utilizes a fiber layer 421 as a skeleton and is formed by combining the fiber layer 421 with a heat-conducting layer 422. The damper 420 is not only elastic but also has high thermal conductivity, which facilitates the transfer of heat generated by the actuator 410 to the actuator body 401 while reducing the amount of heat generated by the actuator 410 that is transferred to the display panel.

[0157] In some embodiments of the present application, the thermal conductivity of the elastic wave 420 is several times that of general metal materials such as copper and aluminum, so that the heat of the actuator 410 can be mainly transferred to the actuator body 401 through the elastic wave 420, thereby reducing the temperature of the vibration output end of the actuator 410 and reducing the impact of local temperature on the image display quality of the display device.

[0158] In some embodiments, reference Figures 8 to 10 , one of the fiber layer 421 and the heat conducting layer 422 is multiple, and the fiber layer 421 is adjacent to the heat conducting layer 422. In this way, the fiber layer 421 and the heat conducting layer 422 are alternately stacked.

[0159] In some embodiments, reference Figure 8 and Figure 10 The fiber layer 421 is provided with two layers, and the heat conducting layer 422 is located between the two fiber layers 421 .

[0160] In other embodiments, referring to Figure 9The heat conducting layer 422 is provided with two layers, and the fiber layer 421 is located between the two heat conducting layers 422 .

[0161] In some other embodiments, the damper 420 includes multiple fiber layers 421 and multiple heat-conducting layers 422 , and the multiple fiber layers 421 and the multiple heat-conducting layers 422 are alternately stacked.

[0162] In some embodiments of the present application, the damper 420 is provided with fiber layers 421 and heat-conducting layers 422 that are alternately stacked to improve the structural strength of the damper 420 and the thermal conductivity of the damper 420 .

[0163] Combine Figure 7 In some embodiments, the thermally conductive layer 422 contacts the actuator body 401, which improves heat transfer efficiency and, in turn, the heat dissipation efficiency of the actuator 410. When the thermally conductive layer 422 is located on at least one surface of the damper 420, that surface directly contacts the actuator body 401. When the thermally conductive layer 422 is located within the inner layer of the damper 420, for example, between two fiber layers 421, the fiber layer 421 of the damper 420 facing the actuator body 401 is provided with a notch, allowing the thermally conductive layer 422 to be arranged on the surface of the damper 420 and, in turn, to contact the actuator body 401. A notch is provided in the fiber layer 421 corresponding to the second connection portion 4203 of the damper 420, allowing the thermally conductive layer 422 to be arranged on the surface of the damper 420 and, in turn, to contact the actuator body 401.

[0164] Combine Figures 11 to 13 In some embodiments, the thermally conductive layer 422 is a thermally conductive film 423, which is provided with a plurality of through-holes 4231. The thermally conductive film 423 is a membrane independent of the fiber layer 421, and is formed with a plurality of through-holes 4231. The through-holes 4231 provided on the thermally conductive film 423 can be circular holes, elliptical holes, polygonal holes, irregular holes, etc.; the plurality of through-holes 4231 can be arranged in a matrix on the thermally conductive film 423, such as a rectangular matrix or a circular matrix. The embodiment of the present application does not limit the number, shape, or arrangement of the through-holes 4231.

[0165] 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.

[0166] Another possible preparation method for the Tapper 420 includes:

[0167] Step 1: providing a fiber layer 421 and a thermally conductive film 423 , and setting a plurality of through holes 4231 on the thermally conductive film 423 ;

[0168] Step 2: stacking the fiber layer 421 and the thermal conductive film 423 , embossing and curing to form the elastic wave 420 .

[0169] Exemplarily, a fiber mesh cloth is used as a raw material, and the fiber mesh cloth is impregnated in resin to form the fiber layer 421 .

[0170] Exemplarily, flake graphite is used as raw material, and an oxidation and pulping process is performed to form graphene oxide slurry; then it is coated as a base film, and then sintering, reduction and calendering processes are performed to form a graphene film, and the graphene film serves as the thermal conductive film 423.

[0171] The thermally conductive film 423 may be bonded with the resin of the fiber layer 421 so that the fiber layer 421 and the thermally conductive film 423 are stacked. Alternatively, the thermally conductive film 423 is stacked with the fiber layer 421 by bonding or hot-melt processes.

[0172] The fiber layer 421 and the heat-conducting film 423 may both be ring-shaped, and after being embossed and cooled and solidified, the damper 420 is formed.

[0173] 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.

[0174] In some examples, reference Figure 13 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 .

[0175] In other examples, refer to Figure 11 and Figure 12 The fiber layer 421 is provided with two layers, and the thermal conductive film 423 is provided between the two fiber layers 421 .

[0176] 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.

[0177] 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 .

[0178] For the damper 420 of this embodiment, the heat conductive film 423 is in contact with the actuator body 401 , which is beneficial to improving the heat transfer efficiency and further improving the heat dissipation efficiency of the actuator 410 .

[0179] Refer again Figure 7 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 actuator body 401 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 actuator body 401 by the pressure ring 440, thereby improving the stability and tightness of the connection between the damper 420 and the actuator body 401 and facilitating heat transfer.

[0180] For example, the pressure ring 440 and the actuator body 401 as well as the pressure ring 440 and the damper 420 can be bonded together, and the connection method is simple and stable.

[0181] Continue to refer to Figure 7 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.

[0182] Magnetic assembly 450 includes a magnetic permeable member 451 and a magnetic member 452 , with a magnetic air gap N formed between the magnetic permeable member 451 and the magnetic member 452 . Magnetic permeable member 451 is cylindrical with an opening, and magnetic member 452 is disposed on the bottom surface of magnetic permeable member 451 . A gap is formed between the inner wall surface of magnetic permeable member 451 and magnetic member 452 , forming the magnetic air gap N. Magnetic assembly 450 is configured to provide a stable magnetic field in the magnetic air gap N.

[0183] One end of the voice coil is connected to the light board 210. A 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 actuator body 401 via a spring 420. As the magnetic field changes, the voice coil is forced to move back and forth along its own axis. In other words, when the actuator 400 is an electromagnetic actuator, the voice coil constitutes the actuator 410, and the end of the actuator 410 facing away from its vibration output end is located within the magnetic air gap N.

[0184] 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 of this electromagnetic force causes the larger exciter 400 to resonate at a lower frequency, vibrating the light board 210 through the sounding plate 212 or the connector 211. The exciter body 401 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 and the bracket excitation method.

[0185] In some embodiments of the present application, the actuator body 401 includes a magnetic assembly 450 and a housing 430. The housing 430 is configured to support the magnetic assembly 450 and to achieve elastic mounting of the actuator 400. The magnetic conductive member 451 is fixedly connected to the housing 430. Specifically, the magnetic conductive member 451 in 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 away from each other to form the third connecting portion, which is connected to the housing 430.

[0186] The second connection portion 4203 of the damper 420 is pressed against the magnetic member 451 by the pressure ring 440. For example, the second connection portion 4203 and the magnetic member 451, the pressure ring 440 and the magnetic member 451, and the pressure ring 440 and the housing 430 are bonded, providing a simple and stable connection.

[0187] The exciter 400 of some embodiments of the present application reduces the width of the exciter 400 by connecting the elastic wave 420 to the magnetic component 451. Since the axial dimension of the actuator 410 is relatively large, the stacking and pressing of the pressure ring 440, the magnetic component 451 and the shell 430 will not affect the overall thickness of the exciter 400. The connection method of the elastic wave 420 set in this way can not only ensure the stability of the connection, but also help to make the exciter 400 compact.

[0188] Continue to refer to Figure 7 Ventilation holes are provided at the portion of the magnetic member 451 that contacts the damper 420 to improve the heat dissipation efficiency of the magnetic member 451 and the amount of heat dissipated by the actuator 410 through the damper 420. The ventilation holes may be circular holes, and the present embodiment does not limit the shape, number, or arrangement of the ventilation holes.

[0189] In some possible embodiments, the portion of the housing 430 that contacts the magnetic conductive member 451 is provided with ventilation holes. The ventilation holes can be opposite the ventilation holes to further improve heat dissipation efficiency. The ventilation holes can be circular holes. The embodiment of the application does not limit the shape, number, or arrangement of the ventilation holes.

[0190] Combine Figure 3 and Figure 4The display device 10 of some embodiments of the present application further includes a back plate 500, which is disposed on the rear side of the backlight assembly 200 and is configured to support the backlight assembly 200 and the display panel 100. The back plate 500 can be made of aluminum alloy, steel, etc. to provide effective support.

[0191] like Figure 3 As shown, the back panel 500 is connected to the sound board 212. Exemplarily, the back panel 500 is connected to the sound board 212 via a first adhesive member 505. The first adhesive member 505 can be double-sided tape, foam, or the like. An opening 503 is provided on the back panel 500. The actuator 410 of the exciter 400 passes through the opening 503 and is connected to the light board 210. This configuration eliminates the need for a convex bump on the back panel 500, requiring only the opening 503. This simplifies the structure of the back panel 500, facilitates processing, and reduces costs. Furthermore, the back panel 500 is not present at the location corresponding to the exciter 400, which helps reduce the thickness of the display device.

[0192] like Figure 4 As described above, the back panel 500 can be connected to the light panel 210 via the connector 211 . The back panel 500 is provided with a bulge 504 at a position corresponding to the sounding board 212 . The bulge 504 protrudes away from the light panel 210 to accommodate the sounding board 212 .

[0193] Reference Figure 14 When no sound-generating plate is provided, the back panel 500 is positioned on the side of the light panel 210 facing away from the display panel 100 and is connected to the light panel 210 via a first adhesive 505. Multiple first adhesives 505 can be provided to ensure that the spacing between the light panel 210 and the back panel 500 at different locations is within a preset range. This means that the vibration amplitude at different locations on the light panel 210 is relatively uniform, preventing noise from being generated during vibration of the light panel 210. Furthermore, the provision of the first adhesive 505 can limit the position of the light panel 210, preventing deformation of the light panel 210 after the display device 10 is assembled, which could affect the vibration and sound generation.

[0194] 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.

[0195] In some embodiments, the backplane 500 includes a backplane body 501 and a first side panel 502. The backplane body 501 is configured to support the light panel 210 and the display panel 100. An opening 503 is provided on the backplane body 501. The first side panel 502 extends along the edge of the backplane body 501 and protrudes from the backplane body 501 toward one side of the display panel 100. That is, the first side panel 502 protrudes from the front side of the backplane 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.

[0196] Continue to refer to Figure 14 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 .

[0197] 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.

[0198] 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.

[0199] Reference Figure 15 and Figure 16 In 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.

[0200] 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.

[0201] exist Figure 15 and Figure 16 In the display device structure shown, no sounding board is provided; for a display device provided with a sounding board, the connection method of the actuator 400 can also refer to Figure 15 and Figure 16 ;exist Figure 16 In the connection mode of the exciter 400 shown in FIG, the damping block 470 can be connected to the entire sounding board.

[0202] Continue to refer to Figure 14 and Figure 15 The display panel 100 of some embodiments of the present application further includes a display film layer 120 , which may be a liquid crystal film layer.

[0203] The display device of some embodiments of the present application further includes an optical film assembly 110 , which is disposed on a side of the display film layer 120 facing the light board 210 .

[0204] The display film layer 120 may include a color filter (CF) substrate, a thin film transistor (TFT) substrate (also known as an array substrate), and a liquid crystal (LC) layer, with the LC layer located between the CF and array substrates. The TFT substrate is provided with data lines and scan lines. The powering of these data and scan lines controls the orientation of the liquid crystal molecules, directing backlight light through the CF substrate and generating a preset color image.

[0205] The optical film assembly 110 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.

[0206] 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.

[0207] 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 .

[0208] 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.

[0209] 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.

[0210] 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.

[0211] Specifically, the display device 10 includes a second adhesive member 250 having an adhesive property. 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 together via the second adhesive member 250. That is, the diffuser film 113 and the light board 210 are bonded and fixed together 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.

[0212] Combine Figure 17 The display device of some embodiments of the present application further includes a support member 300 , which may be made of silicone or rubber. A plurality of support members 300 may be provided, and the plurality of support members 300 are spaced apart and arranged between the display panel 100 and the backlight assembly 200 .

[0213] 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.

[0214] 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 lamp board 210 of the backlight assembly 200 varies greatly due to material tolerances, assembly process tolerances, and its own gravity. As a result, the consistency of the vibration transmission efficiency cannot be guaranteed, and the fit between the display panel 100 and the lamp board 210 causes vibration noise and abrasion.

[0215] 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.

[0216] 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.

[0217] Furthermore, because the optical film assembly 110 converts and evens the light generated by the light source of the light panel 210, even if the support member 300 is positioned on the light-emitting side of the light panel 210, no shadows will be cast on the display panel 100, resulting in uneven brightness of the display panel 100. This eliminates restrictions on the shape and size of the support member 300, or the contact area between the support member 300 and the diffuser film 113. The cross-section of the support member 300 (the cross-section perpendicular to the display device) can be rectangular or cylindrical; the cross-section of the support member 300 can also be conical, trapezoidal, dumbbell-shaped, or other shapes.

[0218] 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 size of the support member 300 along the thickness direction of the display device is larger than the design size of the interval between the display panel 100 and the light board 210.

[0219] 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.

[0220] 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.

[0221] Furthermore, the support member 300 can be made of an elastic material, such as silicone rubber. However, elastic materials can change in hardness due to temperature. 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, i.e., the welded structure, ensures that the vibration transmission effect remains stable with temperature changes.

[0222] 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.

[0223] The support members 300 are distributed in a plurality of circular rings with the exciter 400 as the center. The distribution density of the support members 300 decreases in the direction away from the exciter 400.

[0224] In some embodiments, a large number of support members 300 are installed, which affects the difficulty of process assembly. Based on this, some embodiments of the present application propose a solution for optimizing the number of support members 300 while ensuring vibration buffering and vibration transmission effects. The support members 300 are arranged unevenly according to the distance from the installation position of the exciter 400, wherein the vibration at the position of the exciter 400 is the most intense and the arrangement density of the support members 300 is the largest. The vibration amplitude is small at the position far away from the exciter 400 and the arrangement density of the support members 300 is reduced, thereby ensuring that the vibration buffering and vibration transmission effects in the area where the entire display device is located are relatively uniform, and optimizing the number of support members 300, which is beneficial to reducing the implementation cost of the display device and the difficulty of process assembly.

[0225] Combine Figure 18 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.

[0226] 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.

[0227] 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.

[0228] Combine Figure 19 The display device of some embodiments of the present application further includes a rear housing 700. The rear housing 700 is located on the side of the driver 400 facing away from the light board 210, that is, the rear housing 700 is disposed behind the driver 400. The rear housing 700 is located on the side of the backlight assembly 200 facing away from the display panel 100. The rear housing 700 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 700 to simplify the appearance of the display device. The rear housing 700 may be made of plastic, metal, or other materials.

[0229] Continue to refer to Figure 19In some embodiments, the actuator 400 is located between the rear housing and the backlight assembly 200, and the actuator 410 of the actuator 400 can also be connected to the rear housing 700. For example, the actuator 410 is bonded, screwed, or clamped to the rear housing 700. In this way, when the actuator 410 vibrates, it can simultaneously drive the rear housing 700 to vibrate and produce sound, thereby improving the sound intensity of the display device. The actuator 410 can be directly connected to the rear housing 700, or the actuator 410 can be indirectly connected to the rear housing 700.

[0230] In some implementations, the exciter 400 further includes a vibration transfer structure 490, through which the actuator 410 is connected to the rear housing 700, thereby exciting the rear housing 700 to vibrate. One end of the vibration transfer structure 490 is connected to the connection structure of the actuator 410, and a via is provided on the magnetic member 452 and the housing 430 of the exciter 400. The other end of the vibration transfer structure 490 passes through the via and is connected to the rear housing 700. In this way, the exciter 400 vibrates forward and backward during operation. The forward vibration is transmitted to the light board 210 through the actuator 410 and then to the display panel 100; the backward vibration is transmitted to the rear housing 700 through the vibration transfer structure 490, and the vibration of the rear housing 700 generates sound waves. And because low-frequency sound has no directionality, it can be superimposed and enhanced with the sound emitted by the display device in the forward direction, thereby achieving the purpose of improving the intensity of low-frequency sound.

[0231] In some embodiments, the vibration transmission structure 490 can be connected to the back cover 700 via a viscous buffer structure 491. The viscous buffer structure 491 includes, but is not limited to, double-sided tape, foam, etc. To ensure the effective transmission of vibration to the back cover 700, the vibration transmission structure 490 is generally made of a hard material. If the vibration transmission structure 490, which is a hard structure, directly contacts the back cover 700, it will cause the hard structures to collide at the contact point and produce noise. The provision of the viscous buffer structure 491 can effectively avoid the problem of hard structures colliding at the contact point and producing noise caused by direct contact between the vibration transmission structure 490 and the back cover 700.

[0232] 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.

[0233] For ease of explanation, the above description has been made with reference to specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments are selected and described to better explain the principles and practical applications, so that those skilled in the art can better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that: include: a display panel configured to display image information; a backlight assembly configured to provide backlight to the display panel; A cavity is formed between the backlight assembly and the display panel; an actuator, disposed on a side of the backlight assembly facing away from the display panel, the actuator being configured to drive the backlight assembly to vibrate; the actuator comprising: The exciter body, an actuator connected to the backlight assembly, The damper has two ends connected to the actuator body and the actuator respectively, and the damper is configured to transfer heat from the actuator to the actuator body.

2. The display device according to claim 1, wherein The damper has a heat-conducting layer, and the heat-conducting layer is in contact with the actuator body.

3. The display device according to claim 2, wherein The damper further includes a fiber layer, and the heat conductive layer and the fiber layer are stacked and formed into an integral piece.

4. The display device according to claim 3, wherein There are multiple fiber layers or multiple heat-conducting layers, and the fiber layers are adjacent to the heat-conducting layers.

5. The display device according to claim 2, wherein: The heat-conducting layer is a heat-conducting film, and a plurality of through holes are provided on the heat-conducting film.

6. The display device according to any one of claims 1 to 5, characterized in that: The exciter further includes a pressure ring configured to press the damper onto the exciter body.

7. The display device according to any one of claims 1 to 5, characterized in that: The actuator body includes a magnetic assembly, the magnetic assembly includes 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; One end of the elastic wave is connected to the magnetic conductive component.

8. The display device according to claim 7, wherein: A ventilation hole is provided on the portion of the magnetic conductive member that contacts the elastic wave.

9. The display device according to any one of claims 1 to 5, characterized in that: The damper includes a main body and a first connecting portion and a second connecting portion provided at two ends of the main body. The first connecting portion is connected to the actuator, and the second connecting portion is connected to the actuator body.

10. The display device according to any one of claims 1 to 5, characterized in that: The display device also includes a rear shell, which is located on the side of the backlight assembly facing away from the display panel; the exciter is located between the rear shell and the backlight assembly, and the actuator of the exciter is also connected to the rear shell to drive the rear shell to vibrate and produce sound.

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