Display device

Abstract

The invention discloses a display device including: a display panel configured to display image information; the backlight assembly comprises a plurality of lamp panels, the lamp panels are spliced with one another, the lamp panels are configured to provide backlight for the display panel, a cavity is formed between the lamp panels and the display panel, and the lamp panels form a plurality of splicing positions distributed at intervals in the first direction; the plurality of splicing positions comprise a first splicing position located in the middle of the display device in the first direction; the exciter is arranged on the side, away from the display panel, of the lamp panel, and the exciter is suitable for driving the lamp panels on the two sides of the first splicing position to vibrate synchronously. According to the display equipment, the exciters are arranged at the multiple splicing positions, close to the middle of the display equipment, in the multiple splicing positions, the lamp panel in the middle area can be well pushed to vibrate, the vibration area and the vibration quality are reduced, the vibration sensitivity and the high-frequency ductility can be improved, and therefore the medium-high-frequency sound production performance of the display equipment is improved.

Description

Technical Field

[0001] The present invention 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, the display device includes structures such as a display panel, a light board, an exciter, and a sound board. The areas of the light board and the sound board are similar to those of the display panel. The light boards are both arranged on the sound board. The exciter drives the light board to vibrate through the sound board, and then transmits the vibration through the cavity between the light board and the display panel, thereby realizing the vibration and sound of the display panel.

[0004] However, since the exciter needs to drive the sound board and the light board to vibrate as a whole, the vibration mass and area are large, and the energy decays quickly, resulting in poor sound effect of the display panel. Summary of the Invention

[0005] The present invention provides a display device that can reduce the vibration area and vibration mass, and can improve the vibration sensitivity and high-frequency ductility, thereby improving the mid- and high-frequency sound performance of the display device.

[0006] The present invention provides a display device, comprising: a display panel configured to display image information; a backlight assembly, wherein the backlight assembly comprises a plurality of lamp boards, the plurality of lamp boards being spliced together, the lamp boards being configured to provide backlight to the display panel, a cavity being formed between the lamp boards and the display panel, the plurality of lamp boards forming a plurality of splicing positions spaced apart along a first direction, the plurality of splicing positions including a first splicing position located in the middle of the display device along the first direction; and an exciter, wherein the exciter is arranged on a side of the lamp board facing away from the display panel, the exciter being suitable for driving the lamp boards corresponding to the first splicing positions to vibrate synchronously.

[0007] The display device of the present invention has the exciters arranged at the splicing positions between adjacent lamp panels. Therefore, it is only necessary to arrange the exciters at several splicing positions close to the middle of the display device among the multiple splicing positions, so as to better drive the lamp panels in the middle area to vibrate, which is equivalent to reducing the vibration area and vibration mass, thereby improving the vibration sensitivity and high-frequency ductility, thereby improving the mid- and high-frequency sound performance of the display device, and avoiding the long-term vibration of all lamp panels over a large area, which may increase the reliability risk of the lamp panels and other optical structures, and cause problems such as lamp damage and diaphragm wear, thereby improving the picture quality.

[0008] In some embodiments, the display device further includes: a sounding board, which is mounted on the side of the light board facing away from the display panel, and the sounding board covers the splicing position and is connected to the light boards on both sides of the splicing position, and the exciter is arranged on the sounding board.

[0009] In some embodiments, the plurality of light panels form a plurality of splicing positions spaced apart along a first direction, wherein several splicing positions close to the middle of the display device along the first direction are first splicing positions, and the sound-emitting panel covers the first splicing positions.

[0010] In some embodiments, the sound panels are symmetrically distributed about a center line of the display device along the first direction.

[0011] In some embodiments, there are multiple sound panels corresponding one-to-one to the first splicing positions, the exciters are provided on at least some of the multiple sound panels, and the exciters are symmetrically distributed about the center line of the display device along the first direction.

[0012] In some embodiments, there is one sounding board, which covers multiple first splicing positions at the same time, and there is at least one exciter, which is symmetrically distributed about the center line of the sounding board in the first direction.

[0013] In some embodiments, two exciters are provided on each sounding board, and the two exciters are arranged at intervals along the first direction, or the two exciters are arranged at intervals along the second direction, and the first direction and the second direction are perpendicular to each other.

[0014] In some embodiments, the remaining splicing positions among the plurality of splicing positions except the first splicing position are second splicing positions, and the display device further includes: a back panel, and the second splicing positions are all fixedly connected to the back panel.

[0015] In some embodiments, the display device further includes: a first connecting member, which is arranged between the first splicing position and the sound board to connect the light board and the sound board; and / or a second connecting member, which is arranged between the second splicing position and the back panel to connect the light board and the back panel.

[0016] In some embodiments, a region of the back plate opposite to the plurality of sound-emitting plates protrudes along the thickness direction of the display panel and away from the display panel to form a convex hull, and the exciter is disposed through the convex hull. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0021] Figure 4 This is a schematic structural diagram of a display device according to some embodiments of the present application;

[0022] Figure 5 This is a schematic structural diagram of a display device according to some embodiments of the present application;

[0023] Figure 6 This is a schematic structural diagram of a display device according to some embodiments of the present application;

[0024] Figure 7 This is a schematic structural diagram of a display device according to some embodiments of the present application;

[0025] Figure 8 This is a schematic structural diagram of a display device according to some embodiments of the present application;

[0026] Figure 9 A schematic structural diagram of an actuator for a display device according to some embodiments of the present application;

[0027] Figure 10 This is a schematic structural diagram of a display device according to some embodiments of the present application;

[0028] Figure 11 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;

[0029] Figure 12 A block diagram of a display device according to some embodiments of the present application;

[0030] Figure 13 is a cross-sectional view of a display device in the related art;

[0031] Figure 14 is a schematic structural diagram of a display device in the related art;

[0032] Figure 15 This is a schematic structural diagram of a display device according to some embodiments of the present application;

[0033] Figure 16 This is a schematic structural diagram of a display device according to some embodiments of the present application;

[0034] Figure 17 This is a schematic structural diagram of a display device according to some embodiments of the present application;

[0035] Figure 18 This is a schematic structural diagram of a display device according to some embodiments of the present application.

[0036] Description of reference numerals:

[0037] 10-Display device;

[0038] 100-display panel; 110-optical film assembly;

[0039] 200-backlight assembly;

[0040] 210 - lamp board; 212 - sound board; 213 - first connecting member; 221 - second connecting member; 216 - splicing position; 216a - first splicing position; 216b - second splicing position; 230 - board body; 240 - light source;

[0041] 300-support member;

[0042] 500-back plate; 504-convex hull; 506-perforation;

[0043] 400-Exciter;

[0044] 401-exciter body; 451-magnetic component; 452-magnetic component; 453-washer; 454-connection terminal;

[0045] 410-actuating member; 420-spring;

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

[0047] 1001-tweeter; 1002-midrange speaker; 1003-woofer;

[0048] M-cavity; N-magnetic air gap. DETAILED DESCRIPTION

[0049] 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 structures such as a display panel, a light board, an exciter, and a sound board. The light board is arranged on the side of the display surface away from the display panel. The light boards are arranged in an array and spliced with each other. The area of the sound board and the spliced light boards are equal to the area of the display panel. The light boards are all set on the sound board. The exciter drives the light board to vibrate through the sound board, and then transmits the vibration through the cavity between the light board and the display panel to realize the vibration and sound of the display panel. However, since the exciter needs to drive the sound board and the light board to vibrate, the vibration mass and area are large, the energy decays quickly, and the sound effect of the display panel still has a lot of room for improvement.

[0050] In view of this, an embodiment of the present application provides a display device, in which the exciter is arranged at the splicing position between adjacent lamp panels. It is only necessary to set the exciter at several splicing positions close to the middle of the display device among the multiple splicing positions, so as to better promote the vibration of the lamp panels in the middle area, which is equivalent to reducing the vibration area and vibration mass, and can improve the vibration sensitivity and high-frequency ductility, thereby improving the mid- and high-frequency sound performance of the display device.

[0051] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0052] The present application provides a display device 10. The display device 10 may be a liquid crystal display device 10, such as a Mini-LED display device. Compared to the light panels in OLED display devices, the light panels of Mini-LED display devices are much stiffer, and an actuator 400 can drive the entire Mini-LED light panel to vibrate. The display device can have various implementations, such as a television, a smart TV, a monitor, an electronic whiteboard, an electronic table, and the like.

[0053] Figure 12 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 12As 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.

[0054] Figure 13 A schematic diagram of the structure of a display device in an example is shown in FIG. Figure 13 As shown, the display device 10 includes a tuner-demodulator 901 .

[0055] 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.

[0056] 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.

[0057] 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.

[0058] In some embodiments, display device 10 includes a controller 905 .

[0059] In some embodiments, the display device 10 includes a display 906; the display 906 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.

[0060] 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.

[0061] In some embodiments, the display device 10 includes an audio output interface 907 .

[0062] In some embodiments, display device 10 includes memory 908 .

[0063] In some embodiments, the display device 10 includes a power supply 909 .

[0064] 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).

[0065] In some embodiments, controller 905 includes a processor.

[0066] In some embodiments, controller 905 includes a video processor.

[0067] In some embodiments, controller 905 includes an audio processor.

[0068] In some embodiments, controller 905 includes a graphics processor.

[0069] In some embodiments, controller 905 includes RAM.

[0070] In some embodiments, controller 905 includes ROM.

[0071] In some embodiments, the controller 905 includes first to nth interfaces configured to input / output signals.

[0072] In some embodiments, the tuner / demodulator 901 receives broadcast television signals via wired or wireless reception, and demodulates audio and video signals, such as EPG data signals, from multiple wireless or wired broadcast television signals. The controller 905 and the tuner / demodulator 901 can be located in different separate devices, that is, the tuner / demodulator 901 can also be located in an external device to the main device where the controller 905 is located, such as an external set-top box.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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. 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.

[0078] The display device 10 includes a display panel 100 , which can be configured to display text, images, and other image information. 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 .

[0079] The display panel 100 is the primary component of the display device 10 and primarily comprises a liquid crystal display (LCD) panel 100. The LCD panel 100 comprises a color filter (CF) substrate, a thin film transistor (TFT) substrate (also known as an array substrate), and a liquid crystal (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 light from the light source 240 through the CF substrate to produce a preset color image.

[0080] Since the liquid crystal display panel 100 itself cannot emit light, 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 a side 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.

[0081] The lamp boards 210 are arranged in an array and spliced together, and a cavity M is formed between the lamp boards 210 and the display panel 100. That is to say, the multiple lamp boards 210 can be arranged in multiple rows and columns, and the total area of the multiple lamp boards 210 is adapted to the area of the display panel 100. In addition, the multiple lamp boards 210 are interconnected to form a cavity M with the display panel 100, and there is gas in the cavity M.

[0082] For example Figure 1 As shown, there may be eight light boards 210 arranged along the first direction. Of course, in other possible examples, while ensuring that the spliced light boards 210 can cover the display panel 100, more light boards 210 or fewer light boards 210 may be provided in the first direction according to the different sizes of each light board 210. Moreover, the sizes of any two of the multiple light boards 210 along the first direction may be the same or different, and the sizes of the light boards 210 at different positions may be reasonably set according to the positions of the light boards 210.

[0083] refer to Figure 1 , the plurality of light panels 210 form a plurality of splicing positions 216, and the plurality of splicing positions 216 are connected along a first direction (eg Figure 1 That is, two adjacent splicing positions 216 are respectively located on both sides of the light board 210, and several splicing positions 216 close to the middle of the display device 10 along the first direction among the multiple splicing positions 216 are first splicing positions 216a.

[0084] It should be noted that when multiple light panels 210 are arranged in an array and spliced together, the light panels 210 have two types of splicing gaps: one extending horizontally along the display device, and the other extending vertically along the display device. The splicing positions 216 in this embodiment refer to the positions corresponding to the splicing gaps extending longitudinally along the display device 10. In other possible examples, the exciter 400 can be positioned at the horizontal splicing gaps of the light panels 210, and / or the exciter 400 can be positioned at the cross-joints of the light panels 210, i.e., at the intersection of the horizontal and vertical splicing gaps.

[0085] refer to Figure 1 The display device 10 further includes an exciter 400, which is disposed on a side of the lamp board 210 facing away from the display panel 100 (e.g., the rear side of the lamp board 210). The exciter 400 can drive the lamp boards 210 on both sides of the first splicing position 216a to vibrate synchronously. When the lamp boards 210 vibrate, the gas in the cavity M is compressed, and the vibration is transmitted to the display panel 100 through the cavity M, thereby driving the display panel 100 to vibrate. The display panel 100 emits sound through the sound waves emitted by the vibration, so that the display panel 100 can be configured to display and to replace the speaker for sound. That is, in this embodiment, the exciter 400 can drive a number of lamp boards 210 near the middle of the display panel 100 along the first direction to vibrate. In this way, the lamp boards 210 in the middle area can generate sound by driving the display panel 100 to vibrate.

[0086] The gas in the cavity M can be equivalent to a damping spring. When the exciter 400 drives the lamp board 210 to vibrate, the movement of the lamp board 210 causes the gas to be compressed, so that the gas can transfer the vibration energy from one side of the lamp board 210 to the side of the display panel 100.

[0087] In some embodiments, the light board 210 may include a board body 230 and a light source 240. The board body 230 may be an aluminum plate, a printed circuit board (PCB), or the like. 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 source 240 may be a lamp bead or a light bar, and the multiple light sources 240 may be fixed to the board body 230 by means of a snap-on connection, a threaded connection, 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).

[0088] 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).

[0089] 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 any one of 0.3mm-0.5mm, 0.5mm-0.8mm, 0.8mm-1.5mm, 1.5mm-2mm, 2mm-3mm, 3mm-5mm, 5mm-8mm, and 8mm-10mm, such as 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, and 10mm. It should be noted that the numerical values and numerical ranges involved in the embodiments of the present application are approximate values and may have a certain range of errors due to the influence of the manufacturing process. Those skilled in the art may consider such errors to be negligible.

[0090] Since the multiple lamp boards 210 are arranged in an array and connected to each other, when the exciter 400 is set on a single lamp board 210, when the vibration energy is transmitted from the lamp board 210 where the exciter 400 is located to the lamp boards 210 around it, the overall vibration mass and area of the multiple lamp boards 210 are large, resulting in rapid attenuation of the vibration energy (as shown in the figure, the measured frequency response drops significantly after kHz), resulting in poor mid- and high-frequency sound effects of the display device 10. The display device 10 of this embodiment, since the exciter 400 is arranged at the first splicing position 216a near the middle of the display device 10, can better promote the vibration of the lamp panel 210 in the middle area, which is equivalent to reducing the vibration area and vibration mass, and can improve the vibration sensitivity and high-frequency ductility, thereby improving the mid- and high-frequency sound performance of the display device 10 (from the measured curve, the average sensitivity is improved by more than 3dB, of which 2000Hz is improved by more than 5dB, and the effective frequency range can be extended to 20kHz). It can also avoid the long-term vibration of all lamp panels 210 over a large area, which increases the reliability risk of the lamp panels 210 and other optical structures, and causes problems such as lamp damage and diaphragm wear, which is beneficial to improving picture quality. In addition, the number of exciters 400 can be reduced, thereby reducing costs.

[0091] In some embodiments, combined Figures 1-8 The display device 10 may further include a sounding board 212. Specifically, the sounding board 212 may be attached to the side of the light board 210 facing away from the display panel 100. The sounding board 212 may cover the splicing position 216 and be connected to the light boards 210 on both sides of the splicing position 216. The exciter 400 is disposed on the sounding board 212. In other words, the light boards 210 on both sides of the splicing position 216 are connected via the sounding board 212, and then the exciter 400 drives the sounding board 212 to vibrate, thereby driving the light boards 210 on both sides of the splicing position 216 to vibrate together.

[0092] Since the area of the sounding board 212 is much smaller than the area of the display screen and the light board 210, the exciter 400 can further reduce the vibration area and vibration mass while being able to drive the light boards 210 on both sides of the splicing position 216 to vibrate, thereby improving the vibration sensitivity and high-frequency ductility. Moreover, setting the exciter 400 on the sounding board 212 can reduce the requirements for the installation accuracy of the exciter 400 compared to directly connecting the exciter 400 to the light board 210.

[0093] In addition, compared with the solution of constructing the area of the sounding board 212 to be the same as the area of the display screen so that the sounding board 212 can connect to all the light boards 210, since the reinforcement of this embodiment only needs to cover the splicing position 216, it can reduce the amount of double-sided tape consumed to connect the sounding board 212 and all the light boards 210, reduce the process difficulty, improve the assembly consistency of multiple light boards 210, and facilitate mass production.

[0094] In some embodiments, the sounding plate 212 can be a honeycomb plate, that is, the interior of the sounding plate 212 has hexagonal honeycomb holes, and the honeycomb holes can be a single layer or can be stacked in multiple layers. In this way, the sounding plate 212 has a high structural strength and a light weight, which is conducive to transferring the vibration energy of the exciter 400 to the light board 210.

[0095] The thickness of the sounding plate 212 can be 1mm-4mm, for example, the thickness of the sounding plate 212 can be 1mm, 2mm, 3mm or 4mm. Of course, this application does not limit this. The thickness of the sounding plate 212 can be reasonably selected within the above range according to actual needs.

[0096] In some embodiments, reference Figure 1 , the plurality of light panels 210 form a plurality of splicing positions 216, and the plurality of splicing positions 216 are connected along a first direction (eg Figure 1The light panels 210 are spaced apart in the left and right directions (as shown), that is, two adjacent splicing positions 216 are respectively located on both sides of the light panel 210, and several splicing positions 216 near the middle of the display device 10 along the first direction among the multiple splicing positions 216 are first splicing positions 216a, and the sounding plate 212 covers the first splicing positions 216a. For example, the splicing position 216 on the center line of the display device 10 along the first direction and several splicing positions 216 on both sides of the center line can be used as the first splicing position 216a. In some embodiments, when the multiple light panels 210 have an even number of splicing positions 216, the first splicing positions 216a are the even number of splicing positions 216 located in the middle area of the display device 10; when the light panel 210 has an odd number of splicing positions 216, the first splicing positions 216a are the odd number of splicing positions 216 located in the middle area of the display device 10.

[0097] This allows the actuator 400 to vibrate only a few lamp boards 210 near the center of the display device 10, enabling sound to be emitted from the center of the display panel 100. Compared to driving all lamp boards 210 to vibrate, this reduces the vibrating area and mass, thereby preventing prolonged vibration of a large area of the lamp boards 210, which could increase reliability risks to the lamp boards 210 themselves and other optical structures of the backlight assembly 200, leading to lamp damage, diaphragm abrasion, and other issues. This improves image quality.

[0098] In some embodiments, the sounding plates 212 are symmetrically distributed about the centerline of the display device 10 along the first direction. For example, when there is only one sounding plate 212, the sounding plate 212 is located on the centerline of the display device 10 along the first direction and is symmetrical about the centerline. When there are three sounding plates 212, the middle sounding plate 212 is located on the centerline of the display device 10 along the first direction and is symmetrical about the centerline, and the other two sounding plates 212 are symmetrically arranged on either side of the centerline. In this way, the sounding plates 212 can evenly transmit vibration energy to the light panels 210 on both sides of the centerline of the display device 10, thereby improving the sound effect of the central portion of the display device 10.

[0099] In some embodiments, reference Figure 1 The remaining splicing positions 216 other than the first splicing position 216a are second splicing positions 216b. The display device 10 may further include a back panel 500, with the second splicing positions 216b being fixedly connected to the back panel 500. In other words, except for the light panel 210 connected to the sound panel 212, the remaining light panels 210 are fixedly connected to the back panel 500.

[0100] In this way, on the one hand, the back panel 500 can be used to isolate the vibration transmission between the lamp boards 210 in the central area and the lamp boards 210 in the surrounding areas, ensuring that only the lamp boards 210 in the central area vibrate, enhancing the sensitivity of the vibration process of several lamp boards 210 in the central area, and thereby improving the central sound effect of the display device 10; on the other hand, the back panel 500 can be used to provide installation support for the overall structure composed of multiple lamp boards 210, ensuring the structural stability of the backlight assembly 200 during the vibration process.

[0101] In some embodiments, reference Figure 2-Figure 5 There are multiple sounding panels 212, each corresponding to the first splicing position 216a. The exciter 400 is provided on at least some of the multiple sounding panels 212. In other words, the exciter 400 may be provided on each sounding panel 212, or only on some of the sounding panels 212. Furthermore, the exciters 400 are symmetrically distributed about the center line of the display device 10 along the first direction.

[0102] For example Figure 2 As shown, there are three sounding plates 212 and three first splicing positions 216a, wherein the middle sounding plate 212 is located on the center line of the display panel 100 along the first direction, and the other two sounding plates 212 are respectively located on both sides of the center line. There can be two exciters 400, and the two exciters 400 are respectively arranged on the two sounding plates 212 on both sides of the center line. In this way, the two exciters 400 can drive the four light panels 210 in the middle area to vibrate simultaneously, thereby realizing sound in the middle of the display panel 100.

[0103] In some embodiments, in this case, the width of the sounding plate 212 provided with the exciter 400 can be constructed to be larger than the width of the sounding plate 212 without the exciter 400, that is, the sounding plate 212 without the exciter 400 only needs to ensure that the two lamp boards 210 can be connected, while the sounding plate 212 provided with the exciter 400 can cover a larger area of the lamp board 210 to ensure that the vibration energy is better transmitted from the sounding plate 212 to the lamp board 210.

[0104] For example Figure 3As shown, there are three sounding plates 212 and three first splicing positions 216a. The middle sounding plate 212 is located on the center line of the display panel 100 along the first direction, and the other two sounding plates 212 are located on either side of the center line. There can be one exciter 400, and one exciter 400 is provided on the sounding plate 212 located on the center line. In this way, the exciter 400 can drive the two light panels 210 in the middle area to vibrate simultaneously, thereby achieving sound generation in the middle of the display panel 100. In some embodiments, in this case, the width of the sounding plate 212 provided with the exciter 400 can be configured to be greater than the width of the sounding plate 212 not provided with the exciter 400. That is, the sounding plate 212 not provided with the exciter 400 only needs to ensure that it can connect the two light panels 210, while the sounding plate 212 provided with the exciter 400 can cover a larger area of the light panels 210, thereby ensuring that the vibration energy is better transmitted from the sounding plate 212 to the light panels 210.

[0105] For example Figure 4 As shown, the sounding plate 212 and the first splicing position 216a are both one, and one sounding plate 212 is located on the center line of the display panel 100 along the first direction. The exciter 400 can be one, so that the exciter 400 can drive the two light panels 210 in the middle area to vibrate simultaneously, thereby realizing sound in the middle of the display panel 100.

[0106] It can be understood that since the sounding plate 212 only needs to cover the splicing position 216 between two adjacent light boards 210, the width of the sounding plate 212 is smaller and the area of the sounding plate 212 is smaller. In this way, the connection area between the sounding plate 212 and the light board 210 is smaller, and the connection structure such as double-sided tape required for the sounding plate 212 and the light board 210 to achieve connection is also less, which can reduce the process difficulty and reduce production costs.

[0107] In some embodiments, reference Figure 6-Figure 8 There is one sounding plate 212, which covers multiple first splicing positions 216a at the same time. There is at least one exciter 400, which is symmetrically distributed about the center line of the sounding plate 212 in the first direction.

[0108] For example Figure 6 As shown, there is only one sounding board 212, which can cover two or more first splicing positions 216a at the same time. At the same time, the sounding board 212 also covers the light board 210 between two adjacent first splicing positions 216a. In this way, the consistency of the vibration movements of the multiple light boards 210 in the central area of the display device 10 can be further improved.

[0109] In some embodiments, two exciters 400 are provided on each sounding board 212 , and the two exciters 400 are spaced apart along a first direction, or the two exciters 400 are spaced apart along a second direction, and the first direction and the second direction are perpendicular to each other.

[0110] For example Figure 7 As shown, there is one sounding board 212, which simultaneously covers two or more first splicing positions 216a. At the same time, the sounding board 212 also covers the light board 210 located between two adjacent first splicing positions 216a. There are two exciters 400, which are arranged side by side and spaced apart on the sounding board 212 along the first direction. Moreover, the two exciters 400 are symmetrically distributed about the center line of the sounding board 212 in the first direction.

[0111] For example Figure 8 As shown, there is one sounding board 212, which covers two or more first splicing positions 216a at the same time. At the same time, the sounding board 212 also covers the light board 210 between two adjacent first splicing positions 216a. There are two exciters 400, which are arranged on the sounding board 212 at intervals along the vertical direction, and both exciters 400 are located on the center line of the sounding board 212 in the first direction.

[0112] Thus, by providing two exciters 400 on one sounding board 212, the vibration energy of the two exciters 400 can be further enhanced, thereby improving the sound effect of the middle part of the display device 10. In addition, the vibration energy transmission of the light boards 210 on both sides of the center line of the display device 10 is more balanced.

[0113] In some embodiments, reference Figure 1 The display device 10 further includes a first connector 213. Specifically, the first connector 213 is disposed between the first joint 216a and the sound board 212 to connect the light board 210 and the sound board 212. The first connector 213 may be a double-sided adhesive tape. This allows for a simple and reliable connection between the light board 210 and the sound board 212 at a low cost.

[0114] In some embodiments, the first connecting member 213 may have a certain elasticity to ensure that the lamp panels 210 on both sides of the first splicing position 216 a have a certain degree of displacement in the front-to-back direction to achieve vibration.

[0115] Accordingly, reference Figure 1The display device 10 may further include a second connecting member 221. Specifically, the second connecting member 221 is disposed between the second splicing position 216b and the back panel 500 to connect the light panel 210 and the back panel 500. The second connecting member 221 may be double-sided tape or foam, and the second adhesive member 250 extends along the edge of the light panel 210. In this way, the light panel 210 and the back panel 500 can be connected simply and reliably at a low cost.

[0116] In addition, since the multiple light boards 210 are arranged in an array, in addition to forming multiple splicing positions 216 in the first direction (such as the left and right direction), the multiple light boards 210 also form multiple splicing positions 216 in the second direction (such as the up and down direction). In this embodiment, the splicing positions 216 in the second direction can all be connected to the back panel through the second connecting member 221. In this way, it can be ensured that only the light boards 210 in the middle area vibrate, thereby realizing sound generation in the middle of the display panel 100.

[0117] In some embodiments, the area of the back plate 500 opposite the plurality of sound-emitting plates 212 protrudes along the thickness direction of the display panel 100 and away from the display panel 100 to form a convex bump 504. The exciter 400 is disposed through the convex bump 504. For example, the convex bump 504 may be provided with a perforation 506, and the exciter 400 may be disposed through the convex bump 504 via the perforation 506. Since the exciter 400 has a certain thickness in the front-to-back direction of the display device 10, the provision of the convex bump 504 facilitates placement of the relevant structures of the exciter 400 on the inner side of the back plate 500 and prevents the back plate 500 from affecting the vibration of the exciter 400. In addition, the display device 10 can be prevented from being excessively large due to thickening the entire area of the back plate 500, thereby facilitating a compact structure.

[0118] Combine Figure 2-Figure 8 , considering that when the exciter 400 is arranged in the middle area of the display device 10, only the middle sound can be achieved, in order to improve the stereo effect of the sound of the display device 10, in this embodiment, the display device 10 may also be provided with a speaker, and the speaker includes a tweeter 1001, a woofer 1003 and a mid-range speaker 1002. The number and arrangement position of the tweeter 1001, the woofer 1003 and the mid-range speaker 1002 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 1001, the woofer 1003 and the mid-range speaker 1002), the sound effect of the display device 10 can be further improved, thereby improving the user experience.

[0119] In the related art, compared with display devices using OLED light sources as light sources, because OLED displays are self-luminous screens and the OLED displays themselves have a certain degree of flexibility, an exciter is set on the back of the OLED display, and the OLED display can be elastically deformed and emit 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 has a backlight assembly 200, and the exciter cannot be directly set on the back of the display panel 100. In addition, the lamp board in the backlight assembly 200 is relatively hard, making it difficult to couple and transmit its own vibration to the display panel 100, and the transmission efficiency of the vibration force is low. Therefore, a support transmission component can be set in the cavity M between the display panel 100 and the lamp board 210 of the Mini-LED display device 10 or other liquid crystal display devices 10. The support transmission component can include multiple support members 300, and use them 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. In addition, the support member 300 can maintain the gap of 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 and generating risks such as collision noise and abrasion.

[0120] Exemplary, reference Figure 10 The support and transmission component includes a plurality of support members 300, which are supported between the backlight panel 210 and the display panel 100 and arranged at intervals along the backlight panel 210. One end of the plurality of support members 300 is connected to the backlight panel 210, and the other end of the support member 300 is connected to the display panel 100. In this way, the gap of the cavity M between the backlight panel body 230 and the display panel 100 can be maintained within a preset range, thereby preventing the light source 240 and the display panel 100 from touching each other at a certain position and generating collision noise.

[0121] In addition, the support member 300 can also serve as a vibration transmission medium to transmit the vibration of the backlight panel 210 to the display panel 100 , thereby improving the transmission efficiency of the vibration from the backlight panel 210 to the display panel 100 .

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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 elastic support member 60 reduces the mutual influence of light between different light control areas, thereby avoiding light interference between different local dimming display areas.

[0129] In some embodiments, the actuator 400 may be any one or more of an electromagnetic actuator 400, a magnetostrictive actuator 400, and a piezoelectric actuator 400, which are highly applicable. Furthermore, the actuator 400 may also include a magnetic field generating unit (e.g., a magnetic component) 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.

[0130] In some embodiments, reference Figure 9 The exciter 400 includes an exciter body 401 and an actuator 410, wherein the exciter body 401 and the actuator 410 are both connected to the side of the sound plate 212 facing away from the display panel 100, and a magnetic air gap N is formed between the exciter body 401 and the sound plate 212, and the actuator 410 can be vibrated in the magnetic air gap N to be configured to drive the light board 210 to vibrate.

[0131] When the exciter 400 is activated, the actuator 410 vibrates and transmits the vibration energy to the light board 210 through the sound-generating plate 212, causing the light board 210 to vibrate. The vibration on one side of the light board 210 is then transmitted to the display panel 100 through the cavity M, causing the display panel 100 to vibrate and produce sound. In this way, the display device 10 of this embodiment can achieve front-side sound generation, and the sound source position of the display device 10 is close to the sound generation position of the screen, achieving a unified audio and video experience and providing a better audio-visual effect for the user.

[0132] refer to Figure 9 For example, if the actuator 400 is an electromagnetic actuator, the actuator 410 is a voice coil (i.e., a conductive coil), and the actuator body 401 is a magnetic assembly. The magnetic assembly is configured to generate a magnetic field, and the voice coil vibrates along its axis in the magnetic field. Thus, the voice coil constitutes the actuator 410.

[0133] Among them, the magnetic component includes a magnetic conductive part 451, a washer 453 and a magnetic part 452 that are well known to those skilled in the art. The magnetic conductive part 451 is in the shape of a cylinder with an opening, the washer 453 is arranged on the bottom surface of the magnetic conductive part 451, and the magnetic part 452 is arranged on the washer 453. There is a gap between the magnetic part 452 and the washer 453 and the inner wall surface of the magnetic conductive part 451, which is called a magnetic air gap. The magnetic component is configured to provide a stable magnetic field in the magnetic air gap.

[0134] One end of the voice coil is connected to the light board 210. A connecting piece can 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 separating. The other end of the voice coil is inserted into the magnetic air gap and fixed to the actuator body 401 via a damper 420. As the magnetic field changes, the voice coil is forced to move back and forth along its axis.

[0135] The voice coil has a connection terminal, one end of which extends to the outside of the actuator body 401 to facilitate connection with an external power supply.

[0136] In some possible embodiments, multiple elastic legs can be provided on the outer circumference of the actuator body 401. These legs can be made of metal or plastic. The number of elastic legs can be 3-5, and the actuator body 401 is connected to the sounding plate 212 via these legs. The multiple elastic legs are spaced apart along the circumference of the actuator body to provide multiple connection locations between the actuator body and the sounding plate 212, thereby enhancing the stability of the actuator 400.

[0137] The elastic legs protrude from the outer wall of the actuator body and are connected to the sound-generating plate 212 or the light board 210. Because the elastic legs are elastically deformable, the actuator body and the light board 210 can move relative to each other. That is, when the actuator 400 vibrates, the actuator body can vibrate relative to the light board 210, allowing the actuator 400 to vibrate the display panel 100 in an inertial drive mode, which helps to stimulate low-frequency sounds with better acoustic effects.

[0138] In some embodiments, 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.

[0139] 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.

[0140] 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 configured to increase the brightness of the light. It is understandable 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.

[0141] 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.

[0142] 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.

[0143] When the display panel 100 and the optical film assembly 110 are pressed together, air gaps may exist between the display panel 100 and the brightness enhancement film 111, between the brightness enhancement film 111 and the fluorescent film 112, and between the fluorescent film 112 and the diffusion film 113. A sealed cavity M is formed between the display panel 100 and the light board 210, and the air gap is in a closed state. The sealed cavity M is closed, that is, the gas in the sealed cavity M and the external air cannot circulate. The sealed cavity M can be equivalent to a damping spring, configured to transmit vibrations between the light board 210 and the display panel 100.

[0144] In some embodiments, the display device 10 further includes a rear cover, 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 connection lines, etc. of the display device 10 can be disposed between the back plate 500 and the rear cover 600 to simplify the appearance of the display device 10. The material of the rear cover 600 can be plastic, metal, etc.

[0145] 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.

[0146] 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.

[0147] 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 plurality of light boards, the plurality of light boards being spliced together, the light boards being configured to provide backlight to the display panel, a cavity being formed between the light boards and the display panel, the plurality of light boards forming a plurality of splicing positions spaced apart along a first direction, the plurality of splicing positions including a first splicing position located in the middle of the display device along the first direction; An exciter is provided on a side of the lamp board facing away from the display panel, and the exciter is suitable for driving the lamp board corresponding to the first splicing position to vibrate synchronously.

2. The display device according to claim 1, wherein Also includes: a sounding board, the sounding board being arranged on a side of the light board facing away from the display panel, and the sounding board covering the first splicing position and being connected to the light boards on both sides of the first splicing position; The exciter is arranged on the sounding board.

3. The display device according to claim 2, wherein The sound generating panels are symmetrically distributed about a center line of the display device along the first direction.

4. The display device according to claim 3, wherein There are multiple sounding boards, each of which corresponds to the first splicing position. The exciter is provided on at least part of the plurality of sound generating panels.

5. The display device according to claim 4, wherein: The actuators are symmetrically distributed about a center line of the display device along the first direction.

6. The display device according to claim 3, wherein There is one sounding board, and the sounding board covers multiple first splicing positions at the same time. There is at least one exciter, and the at least one exciter is symmetrically distributed about a center line of the sounding board in the first direction.

7. The display device according to claim 5 or 6, characterized in that: Each of the sounding boards is provided with two exciters. The two actuators are arranged at intervals along the first direction, or the two actuators are arranged at intervals along the second direction, The first direction and the second direction are perpendicular to each other.

8. The display device according to claim 3, wherein The remaining splicing positions among the plurality of splicing positions except the first splicing position are second splicing positions, The display device further includes a back panel, and the second splicing positions are all fixedly connected to the back panel.

9. The display device according to claim 8, wherein Also includes: a first connecting member, the first connecting member being provided between the first splicing position and the sounding board to connect the light board and the sounding board; and / or, A second connecting member is provided between the second splicing position and the back plate to connect the light panel and the back plate.

10. The display device according to claim 8, wherein The area of the back plate opposite to the plurality of sound-generating plates protrudes along the thickness direction of the display panel and away from the display panel to form a convex hull, and the exciter is disposed through the convex hull.

Images