Display device

Abstract

The present application discloses a display device including: a display panel configured to display image information; the backlight assembly comprises a lamp panel, the lamp panel is configured to provide backlight for the display panel, and a cavity is formed between the lamp panel and the display panel; at least part of the structure of the back plate is arranged on one side, opposite to the display panel, of the lamp panel; the exciter comprises a coil assembly, the coil assembly is in a plane shape, and the coil assembly is arranged on the side, away from the display panel, of the lamp panel; the coil assembly is arranged on the back plate, the magnetic assembly is arranged on the back plate and faces the coil assembly, and the coil assembly and the magnetic assembly are configured to drive the display panel to vibrate and produce sound through electromagnetic induction of the coil assembly and the magnetic assembly. According to the display device, the coil assembly performs surface driving on the lamp panel, the vibration conduction efficiency can be remarkably improved, the display panel can bear higher power driving, and the sound production effect is improved.

Description

Technical Field

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

[0002] With the development of science and technology and the improvement of people's living standards, display devices are increasingly used in people's work and life.

[0003] In related technologies, a display device includes a display panel, a light board, an electromagnetic exciter and other structures. The vibration energy of the electromagnetic exciter is transmitted to the display panel through the light board and the cavity between the light board and the display panel, thereby causing the display panel to vibrate and produce sound.

[0004] However, since the transmission electromagnetic exciter is located at a certain point on the light board, the vibration energy transmission efficiency is low, and the local pressure on the display panel is large, which is not conducive to increasing the vibration energy and thus improving the sound effect. Summary of the Invention

[0005] Some embodiments of the present application provide a display device that can significantly improve the transmission efficiency of vibration energy, reduce attenuation, and improve the sound effect of the display panel.

[0006] Some embodiments of the present application provide a display device, comprising: a display panel, configured to display image information; a backlight assembly, the backlight assembly comprising a lamp board, the lamp board being configured to provide backlight to the display panel, a cavity being formed between the lamp board and the display panel; a back panel, at least a portion of the structure of the back panel being arranged on a side of the lamp board facing away from the display panel; an exciter, the exciter comprising: a coil assembly, the coil assembly being planar, the coil assembly being arranged on a side of the lamp board facing away from the display panel; a magnetic assembly, the magnetic assembly being arranged on the back panel and facing the coil assembly, the coil assembly surrounding at least a portion of the structure of the magnetic assembly, the coil assembly and the magnetic assembly being configured to drive the lamp board to vibrate by their own electromagnetic induction, so as to drive the display panel to vibrate and produce sound.

[0007] According to the display device of the present application, a planar coil assembly is provided on the lamp board, and a magnetic assembly is provided on the back board. After being energized, the coil assembly can be subjected to a constantly changing force in the magnetic field generated by the magnetic assembly, thereby driving the display panel to vibrate through the lamp board and the cavity in turn, causing the display panel to make a sound. Compared with the solution in which the electromagnetic exciter of the transmission is provided at a certain point of the lamp board to form a bending wave vibration, the planar coil assembly has a larger coverage range of the lamp board, and the driving force generated is uniform on the entire plane of the lamp board, that is, the coil assembly drives the lamp board in a surface manner. On the one hand, the vibration of the lamp board can be made into a plane displacement vibration (that is, the entire lamp board moves forward and backward, rather than a part of the lamp board forming an edge), that is, a piston-type vibration, which can significantly improve the transmission efficiency of the vibration energy and reduce attenuation. On the other hand, the display panel is subjected to uniform force, so that the pressure exerted on the screen is much smaller than that of the point drive, and can withstand a higher power drive, thereby further improving the sound effect of the display panel.

[0008] In some embodiments, the coil assembly includes a conductive coil, the conductive coil is disposed on the lamp board, and the magnetic assembly includes a magnetic member, the conductive coil surrounds the magnetic member.

[0009] In some embodiments, there are multiple magnetic parts, and the multiple magnetic parts are arranged on the back plate at intervals along the first direction. The magnetic properties of two adjacent magnetic parts are opposite and form a closed magnetic circuit. The multiple magnetic parts form a number of placement gaps, and at least one side edge of the conductive coil passes through the number of placement gaps in sequence to surround the multiple magnetic parts.

[0010] In some embodiments, the magnetic assembly further includes a magnetic conductive member, the magnetic conductive member is connected to the back plate, and the magnetic member is fixedly disposed on the magnetic conductive member.

[0011] In some embodiments, the light board includes: a base layer, the base layer having a first side facing the display panel and a second side facing away from the display panel; a first circuit layer, the first circuit layer is arranged on the first side, and an array of light sources is provided on the first circuit layer, and the light source is used to project light onto the display panel; the coil assembly constitutes a second circuit layer, and the second circuit layer is arranged on the second side.

[0012] In some embodiments, the light panels are arranged in an array in plurality, and the exciter is disposed on at least some of the plurality of light panels. The exciter is configured to drive any one of the at least some of the light panels to vibrate independently, or the exciter is configured to drive at least some of the light panels to vibrate synchronously.

[0013] In some embodiments, the lamp boards are arranged in an array in plurality, and any one of the plurality of lamp boards is provided with the coil assembly. The number of the magnetic assemblies is less than the number of the coil assemblies, and the magnetic assembly and the coil assemblies on some of the lamp boards together constitute the exciter.

[0014] In some embodiments, the display device further includes: a buffer connector, the buffer connector is disposed between the light panel and the back panel, and the light panel is connected to the back panel via the buffer connector.

[0015] In some embodiments, the buffer connector is a double-sided foam tape, and / or the buffer connector is provided at a joint position between two adjacent light panels.

[0016] In some embodiments, the display device further includes: a middle frame, which is arranged on the peripheral side of the display panel and the back plate; a first seal, which is arranged on the peripheral side of the display panel to seal the gap between the display panel and the middle frame; and a second seal, which is arranged on the peripheral side of the light board to seal the gap between the light board and the back plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0018] Figure 1 This is a schematic structural diagram of a display device according to some embodiments of the present application;

[0019] Figure 2 This is a schematic structural diagram of a display device according to some embodiments of the present application;

[0020] Figure 3 A schematic structural diagram of an actuator for a display device according to some embodiments of the present application;

[0021] Figure 4 A schematic structural diagram of a coil assembly of an exciter according to some embodiments of the present application;

[0022] Figure 5 A schematic structural diagram of a magnetic component of an actuator according to some embodiments of the present application;

[0023] Figure 6 This is a schematic diagram of the structure of the light board in some embodiments of the present application;

[0024] Figure 7This is a schematic diagram of the layout of the exciter on the light board in some embodiments of the present application;

[0025] Figure 8 This is a schematic diagram of the layout of the exciter on the light board in some embodiments of the present application;

[0026] Figure 9 This is a schematic diagram of the layout of the exciter on the light board in some embodiments of the present application;

[0027] Figure 10 This is a schematic diagram of an operation scenario between a display device and a control device shown in an embodiment of the present application;

[0028] Figure 11 A block diagram of a display device according to an embodiment of the present application;

[0029] Figure 12 Schematic diagram of the structure of a display device in related technology.

[0030] Description of reference numerals:

[0031] 10-display device; 20-smart device; 30-server;

[0032] 100-display panel; 110-optical film assembly;

[0033] 200-backlight assembly;

[0034] 210-light board; 211-buffer connector;

[0035] 230 - board body; 240 - light source; 231 - base layer; 232 - first circuit layer; 233 - second circuit layer;

[0036] 300-support member;

[0037] 400-Exciter;

[0038] 410-coil assembly; 450-magnetic assembly; 452-magnetic component; 451-magnetic conductive component;

[0039] 500-back panel;

[0040] 600-middle frame; 611-first sealing member; 612-second sealing member;

[0041] 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;

[0042] M-cavity. DETAILED DESCRIPTION

[0043] With the development of science and technology and the improvement of people's living standards, display devices are increasingly used in people's work and life. In related technologies, the display device includes a display panel, a light board, an electromagnetic exciter and other structures. The vibration energy of the electromagnetic exciter is transmitted to the display panel through the light board and the cavity between the light board and the display panel, so that the display panel vibrates and sounds. However, since the electromagnetic exciter for transmission is set at a certain point on the light board, the electromagnetic exciter forms an electric drive on the light board, and the vibration of the light board is a bending wave vibration. In addition, components such as a sounding board are required to transmit the vibration energy, resulting in a low efficiency of vibration energy transmission. In addition, the local pressure on the display panel is large, which is not conducive to increasing the vibration energy and thus improving the sound effect.

[0044] In view of this, an embodiment of the present application provides a display device, in which a planar coil assembly is arranged on a lamp board, and a magnetic assembly is arranged on a back board. After being energized, the coil assembly can be subjected to a continuously changing force in the magnetic field generated by the magnetic assembly, thereby driving the display panel to vibrate through the lamp board and the cavity in turn, causing the display panel to make sound. On the one hand, the planar coil assembly can significantly improve the conduction efficiency of vibration energy and reduce attenuation. On the other hand, the display panel is subjected to uniform force, so that the pressure exerted on the screen is much smaller than that of point drive, and can withstand higher power drive, thereby further improving the sound effect of the display panel.

[0045] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0046] The display device 10 of this embodiment can be a liquid crystal display device 10. For example, the display device 10 can be a Mini-LED display device. Compared to the light panels in OLED display devices, the light panels of Mini-LED display devices are much harder, and the actuator 400 can drive the entire Mini-LED light panel to vibrate. The display device can have various implementation forms, such as a television, a smart TV, a monitor, an electronic whiteboard, an electronic table, etc.

[0047] Figure 10 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 10As 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.

[0048] Figure 11 A schematic diagram of the structure of a display device in an example is shown in FIG. Figure 11 As shown, the display device 10 includes a tuner-demodulator 901 , which receives broadcast television signals via a wired or wireless reception method, and demodulates audio and video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals.

[0049] In some embodiments, the display device 10 includes a controller 905. In some embodiments, the controller includes a processor, a video processor, an audio processor, a graphics processor, RAM, ROM, and first to nth interfaces configured as input / output.

[0050] In some embodiments, the display device 10 includes an audio output interface 907 .

[0051] In some embodiments, display device 10 includes memory 908 .

[0052] In some embodiments, the display device 10 includes a power supply 909 .

[0053] In some embodiments, the display device 10 includes a display 906, which includes a display screen component configured to present a picture, and a driving component for driving the image display, and is configured to receive an image signal output from a controller to display video content, image content, and a menu control interface component and a user control UI interface.

[0054] The display 906 may be a liquid crystal display, an OLED display, or a projection display, and may also be a projection device and a projection screen.

[0055] In some embodiments, the display device 10 includes a communicator 902, which is a component configured to communicate with an external device or server according to various communication protocols. For example, the communicator 902 may include at least one of a Wi-Fi module, a Bluetooth module, a wired Ethernet module, or other network communication protocol chip or a near-field communication protocol chip, as well as an infrared receiver. The display device 10 can establish transmission and reception of control signals and data signals with the control device 900 or the server 30 via the communicator 902.

[0056] In some embodiments, the display device 10 includes at least one of the user interfaces 910 , and the user interface 910 may be configured to receive a control signal from the control device 900 (eg, an infrared remote controller, etc.).

[0057] 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.

[0058] In some embodiments, the display device 10 includes an external device interface 904. The external device interface 904 may include, but is not limited to, any one or more of the following: a high-definition multimedia interface (HDMI), an analog or digital high-definition component input interface (component), a composite video input interface (CVBS), a USB input interface (USB), an RGB port, etc. It may also be a composite input / output interface formed by multiple of the above interfaces.

[0059] 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.

[0060] 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.

[0061] In some embodiments, the controller includes a central processing unit (CPU), a video processor, an audio processor, a graphics processing unit (GPU), RAM Random Access Memory (RAM), ROM (Read-Only Memory, ROM), and at least one of a first interface to an nth interface configured as input / output, a communication bus (Bus), etc.

[0062] 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.

[0063] 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.

[0064] 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 right side of the display device 10 refer to the left and right sides of the user when the user is facing the display surface of the display device 10. Accordingly, the side of the display device 10 facing the user is the front side, the side of the display device 10 facing away from the user is the back side, the top side of the display device 10 is the top side, and the bottom side of the display device 10 is the bottom side.

[0065] refer to Figure 1 and Figure 2 The display device 10 includes a display panel 100, which is used to display image information such as text and images. The display panel 100 includes a display area and a circuit board located on one side of the display area, and the circuit board is used to drive and display the entire display panel 100. The display panel 100 is a major component of the display device 10, which mainly includes a liquid crystal display panel 100. The liquid crystal display panel 100 includes a color filter (CF) substrate, a thin film transistor (TFT) substrate (also called an array substrate) and a liquid crystal (LC) layer. The liquid crystal layer is located between the color filter substrate and the array substrate. Among them, the thin film transistor substrate is provided with data lines and scan lines. The direction of the liquid crystal molecules is controlled by whether the data lines and the scan lines are energized or not, so that the light from the light source 240 is emitted through the color filter substrate and a preset color picture is generated.

[0066] Since the liquid crystal display panel 100 cannot emit light on its own, in order for the display device 10 to display normally, the display device 10 also includes a backlight assembly 200. The backlight assembly 200 can be a direct-type backlight assembly 200. The backlight assembly 200 includes a lamp board 210. The lamp board 210 is arranged on the side facing away from the display surface of the display panel 100. The lamp board 210 is configured to generate light and provide backlight to the display panel 100. It can be understood that the lamp board 210 is used to provide sufficient brightness and evenly distributed backlight for the display panel 100. The display panel 100 can modulate the backlight as needed to display different images. A cavity M is defined between the lamp board 210 and the display panel 100, and gas is contained in the cavity M.

[0067] In some embodiments, combined Figure 1 and Figure 2 , the light board 210 may include a board body 230;

[0068] In some embodiments, combined Figure 1 and Figure 2 , the light board 210 may include a light source 240;

[0069] The board body 230 may be an aluminum plate, a printed circuit board (PCB), etc. The light source 240 may be a light-emitting diode (LED), a sub-millimeter light-emitting diode (Mini-Light-Emitting Diode, Mini LED) or a micron-level light-emitting diode (Micro-Light-Emitting Diode, Micro LED).

[0070] There may be multiple light sources 240, and the multiple light sources 240 are arranged on the side of the board body 230 facing the display panel 100 and are spaced apart so that the light sources 240 provide backlight for the display panel 100. The light sources 240 may be lamp beads or light strips, and the multiple light sources 240 may be fixed to the board body 230 by means of snap-fitting, threaded connection, etc.

[0071] The display device 10 further includes a back plate 500, which is disposed on a side of the backlight assembly 200 facing away from the display panel 100, that is, the back plate 500 is disposed on the rear side of the light board 210. The back plate 500 can be used 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.

[0072] In some embodiments, the display 906 includes a display panel 100 and a backlight assembly 200;

[0073] refer to Figure 3-Figure 5The display device 10 also includes an actuator 400. The actuator 400 includes a coil assembly 410 and a magnetic assembly 450. The coil assembly 410 is planar. Here, the planar shape of the coil assembly 410 means that when the coil assembly is wound multiple times, the multiple turns are located in the same plane, rather than being stacked. The coil assembly 410 is located on the side of the light board 210 facing away from the display panel 100. The magnetic assembly 450 is located on the back panel 500 and faces the coil assembly 410. The magnetic assembly 450 is used to generate a magnetic field. The coil assembly 410 and the magnetic assembly 450 are configured to drive the display panel 100 to vibrate and produce sound through their own electromagnetic induction. For example, after the magnetic assembly 450 generates a magnetic field, by inputting a continuously changing current into the coil assembly 410, the force acting on the coil assembly 410 in the magnetic field generated by the magnetic assembly 450 continuously changes, thereby generating vibration. In other words, the coil assembly 410 constitutes the actuator of the light board 210.

[0074] Among them, the cavity M can be in a closed state. At this time, the closed cavity M can be equivalent to a damping spring. When the coil assembly 410 vibrates, the vibration energy is transferred to the lamp board 210. The lamp board 210 compresses the gas in the cavity M. In this way, the gas can transfer the vibration energy to the display panel 100 to drive the display panel 100 to vibrate. The display panel 100 makes sound through the sound waves emitted by the vibration, so that the display panel 100 can be used for display and can also be used to replace the speaker to make sound.

[0075] Of course, the present application is not limited to this. The cavity M may also be in an unsealed state. In this case, a support member 300 (hereinafter referred to as the support member 300) may be provided between the lamp board 210 provided with the exciter 400 and the display panel 100. The support member 300 is used to transmit vibration energy from one side of the lamp board 210 to the display panel 100, thereby driving the display panel 100 to vibrate and produce sound. It is understood that even if the cavity M is in a sealed state, the support member 300 may be provided to improve the vibration transmission efficiency and maintain a stable gap in the cavity M.

[0076] Sub-millimeter light emitting diodes (such as Mini-LEDs) and other types of light sources have relatively compact sizes, so the cavity M between the light board 210 and the liquid crystal display panel has a smaller gap, thereby reducing the thickness of the cavity M and improving 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).

[0077] For example, the gap of the cavity M can be 0.3 mm to 10 mm, with the maximum gap of the cavity M being 10 mm. Alternatively, the gap of the cavity M can be 0.3 mm or 1 mm. For example, when the gap of the cavity M is 1 mm, the thickness of the cavity M is relatively small, which can improve the transmission efficiency of the vibration force output by the exciter. Alternatively, when the gap of the cavity M is 0.3 mm, the distance between the exciter 400 and the display panel 100 is closer, resulting in stronger vibration and better sound effects. When the gap of the cavity M is 10 mm, the thickness of the cavity M is relatively large, which can prevent collision between the display panel 100 and the light source 240 at a certain position during vibration. Specifically, the gap of the cavity M can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, etc. It should be noted that the numerical values and 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.

[0078] According to the display device 10 of some embodiments of the present application, a planar coil component 410 is arranged on the lamp board 210, and a magnetic component 450 is arranged on the back panel 500. After being energized, the coil component 410 can be subjected to a continuously changing force in the magnetic field generated by the magnetic component 450, thereby driving the display panel 100 to vibrate through the lamp board 210 and the cavity M in turn, causing the display panel 100 to make a sound. Compared with the solution in which the transmission electromagnetic exciter 400 is arranged at a certain point of the lamp board 210 to form bending wave vibration, the planar coil assembly 410 has a larger coverage area of the lamp board 210, and the driving force generated is uniform on the entire plane of the lamp board 210, that is, the coil assembly 410 drives the lamp board 210 in a surface manner. On the one hand, the vibration of the lamp board 210 can be a plane displacement vibration (that is, the lamp board 210 is displaced back and forth as a whole, rather than a part of the lamp board 210 forming an edge), that is, a piston-type vibration, which can significantly improve the transmission efficiency of the vibration energy and reduce attenuation. On the other hand, the display panel 100 is subjected to uniform force, so that the pressure exerted on the screen is much smaller than that of point drive, and can withstand higher power drive, thereby further improving the sound effect of the display panel 100.

[0079] It can be understood that since the planar coil assembly 410 has a larger distribution range on the lamp board 210, the heat is evenly distributed during the operation of the coil assembly 410, the temperature of each part of the lamp board 210 is more balanced, and the power per unit area can be reduced by 2 orders of magnitude compared with the electromagnetic exciter 400, which can avoid the temperature concentration point when using the electromagnetic exciter 400 affecting the local luminous brightness, color, etc. of the backlight assembly 200.

[0080] Furthermore, the planar shape of coil assembly 410 reduces the space occupied by actuator 400, making the backplate 500 structure more flat and reducing protrusions. This further satisfies the pursuit of a thinner and lighter display device 10, facilitating a large, ultra-thin design for the overall appearance of display device 10. Furthermore, the planar shape of coil assembly 410 is ultra-thin, with no inductive reactance or back electromotive force, making it easier to integrate with a power amplifier. Compared to point drivers, it offers better high-frequency response, lower distortion, and improved sound diffusion and sound field effects.

[0081] In some embodiments, combined Figure 1-Figure 4 The coil assembly 410 may include a conductive coil, which may be in a regular ring shape, such as a square, a circle, etc., or in an irregular shape. The conductive coil is provided on the lamp board 210. For example, the conductive coil may be fixed to the lamp board 210 by bonding, or the conductive coil may be integrally formed with the lamp board 210. The structure of the conductive coil may be reasonably selected according to actual needs. The magnetic assembly 450 includes a magnetic part 452, and the conductive coil surrounds the magnetic part 452. The number of magnetic parts 452 may be reasonably set according to actual needs. The magnetic part 452 may be a permanent magnet, and the magnetic pole direction of the magnetic part 452 is perpendicular to the back plate 500. The magnetic field generated by the magnetic part 452 may be called a static magnetic field. The material of the magnetic part 452 may be a ferromagnetic material, a soft magnetic material, etc. that are well known to those skilled in the art. Both the coil and the magnetic part 452 may be of types well known to those skilled in the art, and this embodiment does not impose any restrictions.

[0082] In this way, through the cooperation between the conductive coil and the magnetic part 452, when a changing current is passed through the conductive coil, the conductive coil can be subjected to a force with a continuously changing direction in the magnetic field generated by the magnetic part 452, thereby achieving the purpose of driving the light board 210 to vibrate.

[0083] In some embodiments, there may be multiple magnetic members 452 to increase the strength of the magnetic field. Multiple magnetic members 452 are spaced apart on the back plate 500 along a first direction (e.g., left-right direction). Each magnetic member 452 is strip-shaped. Multiple magnetic members 452 form a plurality of placement gaps. Adjacent magnetic members 452 have opposite magnetic properties and form a closed magnetic loop. At least one side edge of the conductive coil sequentially passes through the plurality of placement gaps to surround the plurality of magnetic members 452.

[0084] Combine Figure 3 , describing the winding method of the conductive coil, wherein the plurality of magnetic members 452 include a first magnetic member 452, a second magnetic member 452, a third magnetic member 452, a fourth magnetic member 452, and a fifth magnetic member 452 arranged in sequence along a first direction, a first placement gap is provided between the first magnetic member 452 and the second magnetic member 452, a second placement gap is provided between the second magnetic member 452 and the third magnetic member 452, a third placement gap is provided between the third magnetic member 452 and the fourth magnetic member 452, and a fourth placement gap is provided between the fourth magnetic member 452 and the fifth magnetic member 452, and the conductive coil is away from the first magnetic member 452 and the second magnetic member 452. 452 and the upper end of the first magnetic member 452 is wound, extending downward to the lower end of the first magnetic member 452, then turning into the first placement gap and extending upward, turning into the second placement gap from the upper end of the second magnetic member 452 and extending downward, turning into the third placement gap from the lower end of the third magnetic member 452 and extending upward, passing through the fourth placement gap, reaching the lower end of the fifth magnetic member 452, and then extending upward from the side of the fifth magnetic member 452 facing away from the fourth magnetic member 452 to the upper end of the fifth magnetic member 452, and then extending roughly along the first direction to the starting position, starting the second circle of winding, until the conductive coil disk has the target number of circles. In this way, the length of the conductive coil in the magnetic field can be increased as much as possible, and sufficient area of the lamp board 210 can be covered, thereby providing sufficient driving force for the lamp board 210 to achieve vibration. Of course, the present application does not limit the winding method of the conductive coil.

[0085] In addition, reference Figure 3 To further increase the length of the conductive coil, the magnetic members 452 can be divided into multiple groups. These groups are spaced apart along a first direction, and each group can include multiple magnetic members 452 spaced apart along a second direction, with the first and second directions being perpendicular to each other. This ensures that the magnetic poles of the magnetic members 452 in each group are arranged in the same direction, ensuring that the forces exerted by the magnetic members 452 on the same side of the coil in each group are in the same direction. This maximizes the vibration energy provided by the exciter 400 to the light panel 210, ensuring effective sound generation.

[0086] In some embodiments, multiple magnetic members 452 may also be arranged at intervals along the circumference of a reference circle, with the length direction of each magnetic member 452 being parallel to the radial direction of the reference circle corresponding to the position of the magnetic member 452. The reference circle may refer to the circumference of the same position of multiple magnetic members 452, such as the radial inner end, the radial outer end, or any other position. At this time, there is a placement gap between any two adjacent magnetic members 452, and the conductive coil passes through all the placement gaps in sequence to form a surround of the multiple magnetic members 452. In this way, by adjusting the radius of the reference circle and adjusting the position of the magnetic member 452 accordingly, the coverage range of the exciter 400 can be adjusted, and the exciter 400 can evenly transmit vibration energy to the surroundings, which is conducive to better promoting the vibration and sound generation of the display panel 100.

[0087] In some embodiments, combined Figure 1 and Figure 5 The magnetic component 450 may further include a magnetic conductive part 451, which may be a magnetic conductive plate. The magnetic conductive part 451 is connected to the back plate 500, and the magnetic part 452 is fixedly arranged on the magnetic conductive part 451. The magnetic conductive part 451 is conducive to ensuring that adjacent magnetic parts 452 form a closed magnetic circuit, and the magnetic conductive part 451 can provide installation support for the magnetic part 452.

[0088] It is understood that the conductive coil generates a certain amount of heat during prolonged operation. To improve the safety of the entire device, heat dissipation holes can be provided on the magnetic conductive member 451. The heat dissipation holes can be in any shape, such as square, oval, or trapezoidal. The number and size of the heat dissipation holes can also be adjusted according to actual conditions and are not limited in this embodiment. The heat dissipation holes can dissipate the heat generated by the conductive coil into the air, preventing the conductive coil from overheating, and thus ensuring the image quality of the display device 10.

[0089] Taking into account that the magnetic part 452 may be positionally offset in the process of generating a magnetic field, in order to avoid fixing the position of the magnetic part 452 and ensure the normal operation of the exciter 400. In some optional embodiments, the magnetic assembly 450 may further include a positioning plate (not shown). Specifically, the positioning plate is arranged on the side of the magnetic conductive part 451 where the magnetic part 452 is arranged, and a positioning hole is provided on the positioning plate. The positioning hole passes through the opposite sides of the positioning plate. The magnetic part 452 is clamped in the positioning hole, and one side of the magnetic part 452 abuts against the side wall of the magnetic conductive part 451. It can be understood that by adding a positioning plate to better fix the position of the magnetic part 452, the overall stability is further improved.

[0090] In some embodiments, the positioning plate and the magnetic member 451 can be connected by a detachable connection or a fixed connection. For example, bolts, clips or hanging connections are used. Specifically, the embodiments of the present application are not too restrictive here. It should be noted that the positioning plate can be made of non-magnetic material and fixed on the magnetic member 451. It is used to limit the magnetic member 452, maintain the relative position of the magnetic member 452 accurately and the reliability of the long-term vibration stress state.

[0091] In some embodiments, reference Figure 1 The back plate 500 may be provided with an opening 503, and the magnetic conductive member 451 may be disposed at the opening 503. The magnetic conductive member 451 may cover the opening 503 and may be fixedly connected to the back plate 500, for example, by bolting or clamping. Thus, disposing the magnetic conductive member 451 at the opening of the back plate 500 facilitates heat dissipation of the magnetic conductive member 451, and the connection between the magnetic conductive member 451 and the back plate 500 is relatively simple and easy to implement.

[0092] In some embodiments, reference Figure 2 The magnetic conductive member 451 can be integrally formed with the back plate 500 , that is, the magnetic member 452 can be directly disposed on the back plate 500 . This can further simplify the overall structure of the display device 10 and reduce costs.

[0093] In some embodiments, reference Figure 6 , the light board 210 may include a base layer 231;

[0094] In some embodiments, reference Figure 6 , the light board 210 may include a first circuit layer 232;

[0095] In some embodiments, reference Figure 6 , the light board 210 may include a second circuit layer 233 .

[0096] The base layer 231 can be a non-metallic layer, for example, a plastic component, or alternatively, other materials. The base layer 231 has a first side surface and a second side surface, with the first side surface facing the display panel 100 and the second side surface facing away from the display panel 100. A first circuit layer 232 is disposed on the first side surface, and an array of light sources 240 are disposed on the first circuit layer 232. The light sources 240 are used to project light toward the display panel 100. The coil assembly 410 can constitute a second circuit layer 233, which is disposed on the second side surface.

[0097] In some embodiments, the base layer 231, the first circuit layer 232 and the second circuit layer 233 can be an integrated structure, and the base layer 231, the first circuit layer 232 and the second circuit layer 233 together constitute the above-mentioned board body 230. At this time, the board body 230 is a double-sided copper-clad circuit substrate, and the first circuit layer 232 and the second circuit layer 233 are both copper foil circuits printed on the substrate. In other words, in this embodiment, the coil assembly 410 is formed by the metal layer on the second side of the double-sided copper-clad circuit substrate through an etching process or a printing process. The coil assembly 410 is fixed to the lamp board 210 without relying on other intermediate connectors. The coil assembly 410 is both a part of the lamp board 210 and can serve as a part of the exciter 400. In this way, integrating the coil assemblies of the lamp board 210 and the exciter 400 into one is conducive to reducing the overall thickness of the backlight assembly 200 and the exciter 400, thereby contributing to the lightweight design of the display device 10. The light source is an LED light source, which is arranged in an array on the first circuit layer 232. In addition, the outside of the light source can be covered with a transparent package to better protect the light source and prevent the light source from being squeezed or worn by other structures when the light board 210 vibrates.

[0098] It should be noted that the conductive coil acts as a pure resistive load, which can effectively improve the high-frequency response of the electromagnetic excitation unit, thereby expanding the frequency bandwidth of the exciter 400.

[0099] The substrate may be made of a conductive foil circuit board or film, wherein the conductive foil includes but is not limited to metal, copper, copper-plated silver, silver paste, carbon, indium tin oxide (ITO), etc.

[0100] In some embodiments, reference Figure 7 , there are a plurality of light boards 210 arranged in an array, and the exciter 400 is provided on at least part of the plurality of light boards 210. That is to say, among the plurality of light boards 210, only part of the light boards 210 provided with the exciter 400 can vibrate, and the remaining light boards 210 can be fixed. For example, the light boards 210 not provided with the exciter 400 can be directly fixed to the back panel 500. The light board 210 not provided with the exciter 400 can be a non-double-sided copper clad substrate. The exciter 400 is suitable for driving any one of at least part of the light boards 210 to vibrate independently, or the exciter 400 is configured to drive at least part of the light boards 210 to vibrate synchronously. In other words, the plurality of light boards 210 provided with the exciter 400 can vibrate independently of each other, or can vibrate synchronously. This is conducive to the display device 10 outputting different sound effects to enhance the user experience.

[0101] In addition, in some embodiments, the lamp board 210 provided with the exciter 400 can drive the lamp board 210 not provided with the exciter 400 to vibrate synchronously, so as to achieve synchronous vibration of all the lamp boards 210, thereby driving the display panel 100 to vibrate, and also achieving the vibration and sound of the display panel 100.

[0102] In addition, reference Figure 8 Considering that the manufacturing process and manufacturing cost of light boards 210 equipped with conductive coils and those without conductive coils are the same, in this embodiment, the multiple light boards 210 arranged in an array can all be equipped with coil assemblies 410. Furthermore, to achieve vibration of only a portion of the multiple light boards 210, the number of magnetic assemblies 450 can be reduced to less than the number of coil assemblies 410. The magnetic assemblies 450 and the coil assemblies 410 on only some of the light boards 210 together form the exciter 400. In this way, without increasing the structural complexity, the display device 10 can still output different sound effects, thereby enhancing the user experience.

[0103] Of course, in the case where the plurality of lamp boards 210 all use lamp boards 210 with conductive coils, the lamp boards 210 may be equipped with corresponding magnetic components 450, for example Figure 9 As shown, the light board 210 is divided into five groups arranged side by side along the first direction, and the five groups correspond to five areas, namely the left, left center, center, right center, and right areas. In this embodiment, algorithm processing can be added to the audio output signal. According to the sound volume and phase and other parameters of the left, center, and right channels of the audio signal, the left, left center, center, right center, and right 5-way output signals are calculated. The 5-way output signals correspond to the conductive coils of the 5 areas of the display device 10, respectively. In this way, the sound following effect of sound following the picture can be achieved, the sound effect is richer, and the user's audio-visual experience can be further improved.

[0104] In some embodiments, considering that the sound effect of the display device 10 is relatively simple when it only vibrates the display panel 100 to produce sound, in order to enrich the sound effect of the display device 10, in this embodiment, the display device 10 can also be provided with a speaker (not shown in the figure), and the speaker includes a tweeter, a woofer and a mid-range speaker. The number and arrangement positions of the tweeters, woofers and mid-range speakers can be reasonably set according to actual needs. In this way, by matching the vibration sound of the middle area of the display panel 100 with the speaker (including the tweeter, the woofer and the mid-range speaker), the sound effect of the display device 10 can be further improved, thereby improving the user experience.

[0105] In some embodiments, combined Figure 1 and Figure 2The display device 10 may further include a buffer connector 211. The buffer connector 211 is disposed between the light board 210 and the backboard 500. The light board 210 is connected to the backboard 500 via the buffer connector 211. For example, the buffer connector 211 may be disposed at the four corners of the light board 210 or at the four edges of the light board 210. Since the vibration mode of the light board 210 is a plane displacement vibration, the use of the buffer connector 211 can provide elastic buffering and fixation for the vibration of the light board 210. When the light board 210 vibrates, the buffer connector 211 can be compressed or stretched, thereby supporting the backlight sound-emitting element to perform piston-like vibration under the action of the driving force.

[0106] In some embodiments, the buffer connector 211 is a double-sided foam tape, so that the buffer connector 211 has a simple structure and low cost. Of course, this application is not limited to this, and the buffer connector 211 can also have other structures.

[0107] In some embodiments, the buffer connector 211 is arranged at the joint position of two adjacent light panels 210. In this way, the two light panels 210 can be fixed at the same time using the same buffer connector 211 to save materials. In addition, the joint gap between the two light panels 210 can also be sealed to prevent air leakage.

[0108] In some embodiments, combined Figure 1 and Figure 2 , the display device 10 may further include a middle frame 600;

[0109] In some embodiments, combined Figure 1 and Figure 2 , the display device 10 may further include a first sealing member 611;

[0110] In some embodiments, combined Figure 1 and Figure 2 , the display device 10 may further include a second sealing member 612 .

[0111] Specifically, the middle frame 600 is disposed around the display panel 100 and the back panel 500. The middle frame 600 can be connected to the display panel 100 and the back panel 500 respectively. A first sealant 611 is disposed around the display panel 100 to seal the gap between the display panel 100 and the middle frame 600. A second sealant 612 is disposed around the light board 210 to seal the gap between the light board 210 and the back panel 500. For example, the second sealant 612 can be disposed around the periphery of the structure formed by multiple light boards 210. In this way, the overall sealing of the display device 10 can be ensured. In some embodiments, both the first sealant 611 and the second sealant 612 can be double-sided tape.

[0112] In the related art, compared to display devices using OLED light sources, because OLED displays are self-luminous and inherently flexible, an exciter can be placed on the back of the OLED display to elastically deform and produce sound under the excitation vibration of the exciter. However, in the liquid crystal display device 10 of the present application, the liquid crystal display device includes a backlight assembly 200, making it impossible to directly place an exciter on the back of the display panel 100. Furthermore, the light board in the backlight assembly 200 is relatively rigid, making it difficult to couple and transmit its own vibrations to the display panel 100, resulting in low vibration force transmission efficiency.

[0113] Therefore, a support and transmission assembly can be provided in the cavity M between the display panel 100 and the light board 210 of the Mini-LED display device 10 or other liquid crystal display device 10. The support and transmission assembly can include multiple support members 300, which are used as a vibration transmission medium to transmit the vibration of the light board 210 to the display panel 100, thereby improving the efficiency of vibration transmission from the light board 210 to the display panel 100. In addition, the support members 300 can maintain the gap in the cavity M between the light board 210 and the display panel 100 within a preset range, thereby preventing the light source 240 and the display panel 100 from touching each other at a certain position, thereby preventing the risk of collision noise and abrasion.

[0114] Exemplary, reference Figure 10 The support and transmission component includes a plurality of support members 300, which are supported between the lamp board 210 and the display panel 100 and arranged at intervals along the lamp board 210, and one end of the plurality of support members 300 is connected to the lamp board 210, and the other end of the support member 300 is connected to the display panel 100. In this way, the gap of the gas layer M between the lamp board body 230 and the display panel 100 can be maintained within a preset range, thereby avoiding the light source 240 and the display panel 100 from touching each other at a certain position and generating collision noise.

[0115] In addition, the support member 300 can also serve as a vibration transmission medium to transmit the vibration of the lamp board 210 to the display panel 100 , thereby improving the transmission efficiency of the vibration from the lamp board 210 to the display panel 100 .

[0116] 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 provided on the light-emitting side of the light panel 210, no shadow will be generated on the display panel 100, resulting in uneven brightness of the display panel 100. Thus, there are no 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, or can be conical, trapezoidal, dumbbell-shaped, or other shapes.

[0117] It is understandable that the support member 300 may be made of a silicone material that is easy to guide light, and the hardness of the silicone material is relatively low. In other words, the support member 300 is a silicone member or a rubber member.

[0118] Furthermore, it should be noted that, considering that the internal temperature of the display device 10 changes during operation, materials such as silicone and rubber may age with temperature changes, resulting in reduced cushioning effect, reduced support strength, and reduced vibration transmission efficiency of the support member 300. In some embodiments, the support member 300 may also be a composite structure.

[0119] In some embodiments, the two ends of the support member 300 can be connected by negative pressure adsorption. For example, the two ends of the support member 300 can be provided with a suction cup structure, and 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.

[0120] In some embodiments, one end of the support member 300 is connected via a first adhesive structure 310, and the other end of the support member 300 is connected via a suction cup structure. For example, one end of the support member 300 is connected to the light board 210 via the first adhesive structure 310, and the other end of the support member 300 is fixedly connected to the display panel 100 via the suction cup structure. Thus, the support member 300 can be fixed using double-sided bonding or mechanical fixing, thereby achieving vibration linkage between the light board 210 and the display panel 100 and improving vibration transmission efficiency. However, double-sided bonding or mechanical fixing have the disadvantage of complex process implementation. Using a suction cup solution can improve the feasibility of the solution.

[0121] In some embodiments, the support member 300 may be made of a silicone material with a set transparency, and a plurality of bubble structures may be provided in the support member 300 or filled with light-guiding particles, such as silica particles, etc. Along the direction parallel to the plane where the silica particles are located, the distribution density of the bubble structure or light-guiding particles such as silica particles gradually decreases along the direction away from the longitudinal center axis of the support member 300, so as to utilize the bubble structure or light-guiding particles with the above-mentioned distribution pattern in combination with the shape of the support member 300, so that the support member 300 has a uniform light effect on the light emitted by the light source, and can make the uneven light intensity of the light source evenly distributed, which is beneficial to optimizing the display effect of the display device.

[0122] In some embodiments, the surface of the support member 300 is coated with a reflective film or a reflective material. In some embodiments, the support member 300 also has a light control effect. In local dimming display mode, the surface of the support member 300 is coated with a reflective film or a reflective material, so that light emitted from different light control areas is reflected by the surface of the support member 300 in other control areas. The support member 300 reduces the mutual influence of light between different light control areas, thereby avoiding light interference between different local dimming display areas.

[0123] In some embodiments of the present application, reference is made to Figure 1 and Figure 2 The backlight assembly 200 further includes an optical film assembly 110, the display panel 100 is located on the light-emitting side of the optical film assembly 110, and the light board 210 is located on the light-incident side of the optical film assembly 110. That is, the display panel 100, the optical film assembly 110, and the light board 210 are stacked along the thickness direction of the display device 10.

[0124] The optical film assembly 110 may be of different types depending on the type of light emitted by the light source 240. For example, when the light source 240 emits white light, the optical film assembly 110 may include a reflective sheet, a light guide plate, a brightness enhancement film, etc. The reflective sheet is attached to the side of the plate body 230 where the light source 240 is located.

[0125] When the light source 240 emits blue light, the optical film assembly 110 may include a diffusion film, a fluorescent film, and a brightness enhancement film. The diffusion film is arranged on the front side of the light source 240, and the user mixes the light from multiple light sources 240 evenly, that is, converts the point light source 240 into a surface light source 240. The fluorescent film converts the light emitted by the light source 240 into white light. In this way, the color of the light emitted by the light source 240 is not limited, and the light source 240 can emit blue light or purple light. The brightness enhancement film is used to increase the brightness of the light. It can be understood that when the light source 240 emits white light, the optical film assembly 110 may also include a diffusion film, a fluorescent film, and a brightness enhancement film. This embodiment is described by taking the optical film assembly 110 including a diffusion film, a fluorescent film, and a brightness enhancement film as an example.

[0126] In some embodiments, the display panel 100 (i.e., the aforementioned liquid crystal screen) and the optical film assembly 110 may be pressed together to avoid air gaps between the display panel 100, the brightness enhancement film, the fluorescent film, and the diffusion film that allow air to circulate with the outside air.

[0127] In some embodiments, the liquid crystal screen and the optical film assembly 110 can be bonded together, for example, using photosensitive adhesive (UV adhesive), foam, double-sided tape, etc. In other words, the display panel 100 and the optical film assembly 110 can be bonded together to form a whole. In this case, the cavity M is formed between the optical film assembly 110 and the panel body 230.

[0128] In some embodiments, the display device 10 further includes a rear cover (not shown), which is located on the side of the back plate 500 facing away from the display panel 100. That is, the rear cover is disposed on the rear side of the back plate 500. The controller, electrical connections, etc. of the display device 10 can be disposed between the back plate 500 and the rear cover to simplify the appearance of the display device 10. The rear cover can be made of plastic, metal, etc.

[0129] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0130] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0131] 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.

Claims

1. A display device, characterized in that: include: a display panel configured to display image information; a backlight assembly, the backlight assembly comprising a lamp board configured to provide backlight to the display panel, with a cavity formed between the lamp board and the display panel; a back panel, wherein at least a portion of the back panel is disposed on a side of the light panel facing away from the display panel; An exciter, the exciter comprising: a coil assembly, the coil assembly being planar and disposed on a side of the light board away from the display panel; A magnetic component is arranged on the back panel and faces the coil component. The coil component surrounds at least a portion of the structure of the magnetic component. The coil component and the magnetic component are configured to drive the light board to vibrate through their own electromagnetic induction, thereby driving the display panel to vibrate and make sound.

2. The display device according to claim 1, wherein The coil assembly includes a conductive coil, and the conductive coil is arranged on the lamp board. The magnetic assembly includes a magnetic member, and the conductive coil surrounds the magnetic member.

3. The display device according to claim 2, wherein There are multiple magnetic members, which are spaced apart on the back plate along the first direction to form a plurality of placement gaps. Any two adjacent magnetic members have opposite magnetic properties and form a closed magnetic circuit. At least one side edge of the conductive coil passes through a plurality of the placement gaps in sequence to surround the plurality of magnetic members.

4. The display device according to claim 3, wherein The magnetic assembly further includes a magnetic conductive member connected to the back plate, and the magnetic member is fixedly disposed on the magnetic conductive member.

5. The display device according to any one of claims 1 to 4, characterized in that: The light board includes: a base layer, the base layer having a first side surface facing the display panel and a second side surface facing away from the display panel; a first circuit layer, the first circuit layer being disposed on the first side surface, and having light sources arranged in an array on the first circuit layer, the light sources being used to project light toward the display panel; The coil assembly constitutes a second circuit layer, and the second circuit layer is arranged on the second side surface.

6. The display device according to any one of claims 1 to 4, characterized in that: The light panels are arranged in a plurality of arrays, and the exciter is provided on at least part of the plurality of light panels. The exciter is suitable for driving any one of the at least some of the light panels to vibrate independently, or the exciter is suitable for driving the at least some of the light panels to vibrate synchronously.

7. The display device according to claim 5, wherein: The light panels are arranged in a plurality of arrays, and any one of the plurality of light panels is provided with the coil assembly. The number of the magnetic components is less than the number of the coil components, and the magnetic components and some of the coil components on the lamp board together constitute the exciter.

8. The display device according to claim 6, wherein: Also includes: A buffer connector is provided between the light board and the back board, and the light board is connected to the back board through the buffer connector.

9. The display device according to claim 8, wherein The buffer connection piece is a double-sided foam tape, and / or the buffer connection piece is arranged at the splicing position of two adjacent light panels.

10. The display device according to any one of claims 1 to 4, characterized in that: Also includes: a middle frame, the middle frame being arranged around the display panel and the back plate; a first sealing member, the first sealing member being provided on a peripheral side of the display panel to seal a gap between the display panel and the middle frame; A second sealing member is provided on a peripheral side of the lamp board to seal a gap between the lamp board and the back board.

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