Display device

Abstract

The utility model discloses display equipment, and relates to the technical field of display, and the display equipment comprises a display panel; the backlight assembly comprises a vibration area in the plane direction of the backlight assembly, the backlight assembly comprises lamp panels, the lamp panels are located on the light-in side of the optical film assembly and comprise the first lamp panel and the second lamp panel, the first lamp panel is arranged in the vibration area, the second lamp panel is arranged outside the vibration area, and the optical film assembly and the display panel are located on the light-out side of the optical film assembly. A cavity is formed between the optical film assembly and the display panel; the supporting and transferring assembly is supported between the first lamp panel and the optical film assembly; and the exciter is connected with the first lamp panel to transmit vibration to the display panel through the first lamp panel, the optical film assembly and the cavity so as to drive the display panel to vibrate and produce sound. According to the display equipment, the display panel can realize low-frequency sound production performance by using relatively small amplitude, and the vibration transmission efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display device. BACKGROUND

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

[0003] In the related art, the display device includes a display panel, a lamp plate, an electromagnetic exciter and the like, and the vibration energy of the electromagnetic exciter is transmitted to the display panel through the lamp plate and the cavity between the lamp plate and the display panel, so as to realize the vibration sound generation of the display panel.

[0004] However, the display panel will generate the maximum amplitude at the exciter position, and the amplitude will sharply decrease away from the exciter position, which affects the sound generation performance of the display device in some frequency bands. UTILITY MODEL CONTENT

[0005] Some embodiments of the present application provide a display device, which can realize the low-frequency sound generation performance with small amplitude, and can also improve the vibration transmission efficiency and ensure the sound generation effect.

[0006] Some embodiments of the present application provide a display device, which includes a display panel configured to display image information, a backlight assembly including a vibration area in a plane direction of the backlight assembly, the backlight assembly including a lamp plate including a first lamp plate and a second lamp plate, the first lamp plate being arranged in the vibration area, the second lamp plate being arranged outside the vibration area, an optical film assembly, the lamp plate being arranged on an incident light side of the optical film assembly, the display panel being arranged on an outgoing light side of the optical film assembly, a cavity being formed between the optical film assembly and the display panel, a support transmission assembly being supported between the first lamp plate and the optical film assembly, and an exciter being connected with the first lamp plate to transmit vibration to the display panel through the first lamp plate, the optical film assembly and the cavity, so as to drive the display panel to vibrate and generate sound, at least one of the first lamp plate and the optical film assembly being provided with a reinforcing structure.

[0007] According to the display device of the present application, since the vibration transmission among the exciter, the first lamp plate and the optical film assembly is direct driving, the vibration transmission efficiency can be ensured, and the vibration transmission between the optical film assembly and the display panel is indirect driving, so that the display panel can be uniformly stressed in the full plane range, and thus the display panel of the present embodiment can realize low-frequency sound performance with a smaller amplitude (0.3 mm). In addition, by providing the first lamp plate and the optical film assembly with the reinforcing structure for strengthening the strength of itself, the structural strength of the first lamp plate or the optical film assembly can be enhanced, the area of the vibration division region can be minimized or even eliminated, so as to ensure the vibration energy transmission efficiency and guarantee the sound effect.

[0008] In some embodiments, the optical film assembly comprises a diffusion plate, and the support transmission assembly comprises a plurality of supports, the plurality of supports are arranged at intervals along the first lamp plate, one end of the support is connected with the first lamp plate, and the other end of the support is connected with the diffusion plate.

[0009] In some embodiments, the reinforcing structure comprises a first reinforcing structure, the first reinforcing structure is arranged on the side of the first lamp plate away from the diffusion plate, the first reinforcing structure is annular, and the first reinforcing structure is at least one.

[0010] In some embodiments, the first reinforcing structure is a plurality of first reinforcing structures, the plurality of first reinforcing structures are arranged at intervals along the radial direction of the first reinforcing structure, the supports are divided into a plurality of transmission groups corresponding to the first reinforcing structures, a plurality of supports in each transmission group are arranged at intervals along the circumferential direction of the corresponding first reinforcing structure, and the corresponding first reinforcing structure and the supports in the transmission group are arranged opposite to each other along the thickness direction of the lamp plate.

[0011] In some embodiments, the first reinforcing structure is one, the exciter comprises a first exciter and a second exciter, the first exciter is arranged at the center of the first lamp plate, the first reinforcing structure surrounds the first exciter, and the second exciter is a plurality of second exciters, the plurality of second exciters are uniformly distributed on the first reinforcing structure along the circumferential direction of the first reinforcing structure.

[0012] In some embodiments, the reinforcing structure further comprises a second reinforcing structure, the second reinforcing structure comprises a vibration buffer, and the vibration buffer is supported between the second lamp plate and the diffusion plate.

[0013] In some embodiments, the lamp plate comprises a plate body and a light source, the light source is arranged on the side of the plate body facing the optical film assembly, the plate body comprises a base layer and a composite reinforcing layer, and the composite reinforcing layer constitutes the reinforcing structure.

[0014] In some embodiments, the display device further comprises a back plate, at least part of the structure of the back plate is arranged on the side of the lamp plate opposite to the display panel, and the second lamp plate is fixedly connected with the back plate.

[0015] In some embodiments, the first lamp plate is adapted to move relative to the second lamp plate under the pushing of the actuator.

[0016] In some embodiments, the first lamp plate is connected with the back plate through a first connecting member, or the actuator is fixedly connected with the back plate to support the first lamp plate. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0018] Figure 1 A cross-sectional view of the display device of some embodiments of the present application;

[0019] Figure 2 A structural schematic view of the backlight assembly of some embodiments of the present application;

[0020] Figure 3 A structural schematic view of the first lamp plate of some embodiments of the present application;

[0021] Figure 4 A structural schematic view of the first lamp plate of some embodiments of the present application;

[0022] Figure 5 A structural schematic view of the first lamp plate of some embodiments of the present application;

[0023] Figure 6 A cooperation schematic view of the first lamp plate and the second lamp plate of some embodiments of the present application;

[0024] Figure 7 A cooperation schematic view of the first lamp plate and the second lamp plate of some embodiments of the present application;

[0025] Figure 8 A cooperation schematic view of the first lamp plate and the second lamp plate of some embodiments of the present application;

[0026] Figure 9 A cooperation schematic view of the first lamp plate and the second lamp plate of some embodiments of the present application;

[0027] Figure 10A cooperation schematic diagram of the first lamp plate and the second lamp plate for some embodiments of the present application;

[0028] Figure 11 A cooperation schematic diagram of the first lamp plate and the second lamp plate for some embodiments of the present application;

[0029] Figure 12 A structure schematic diagram of the first lamp plate for some embodiments of the present application;

[0030] Figure 13 A schematic diagram of an operation scene between a display device and a control device shown in an embodiment of the present application;

[0031] Figure 14 A configuration block diagram of a display device shown in an embodiment of the present application;

[0032] Figure 15 A structure schematic diagram of an exciter shown in an embodiment of the present application.

[0033] Explanation of reference signs:

[0034] 10 - display device; 20 - intelligent device; 30 - server;

[0035] 100 - display panel; 110 - optical film assembly;

[0036] 200 - backlight assembly; 200a - vibration area; 200b - vibration suppression area;

[0037] 210 - lamp plate; 210a - first lamp plate; 210b - second lamp plate; 212 - sound emitting plate; 2121 - sub plate; 213 - first connecting piece; 221 - second connecting piece; 230 - plate body; 231 - base layer; 234 - composite reinforcing layer; 240 - light source; 250 - reinforcing structure; 250a - first reinforcing structure; 250b - second reinforcing structure;

[0038] 300 - support;

[0039] 400 - exciter; 400a - first exciter; 400b - second exciter; 410 - actuating piece; 411 - connecting structure; 420 - elastic wave; 4201 - body part; 4202 - first connecting part; 4203 - second connecting part; 430 - shell; 440 - pressing ring; 450 - magnetic assembly; 451 - magnetic conducting piece; 452 - magnetic piece; 460 - elastic pad;

[0040] 500 - back plate;

[0041] 900 - control device; 901 - tuning 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 applied in people's work and life. In the related art, a display device includes a display panel, a lamp panel, an electromagnetic exciter and the like structure. The vibration energy of the electromagnetic exciter is transmitted to the display panel via the lamp panel and a cavity between the lamp panel and the display panel, so as to realize the display panel vibration sound production. However, since the electromagnetic exciter for transmission is arranged at a certain position of the lamp panel, the display panel generates the maximum amplitude at the exciter position, and the amplitude sharply decreases far away from the exciter position, and the actual vibration area is small. If a high sound pressure is required, a large amplitude is needed, but the large amplitude affects the reliability and display performance of the display panel, so that the display device can only realize small-amplitude high-frequency sound production above 300 Hz, and the low-frequency sound production performance is poor.

[0044] Therefore, some embodiments of the present application provide a display device. Since the vibration transmission among the exciter, the first lamp panel and the optical film assembly is direct driving, the vibration transmission efficiency can be ensured. The vibration is transmitted between the optical film assembly and the display panel through a sealed cavity, which is indirect driving, so that the display panel is uniformly stressed in the full plane range. Therefore, the display panel of the present embodiment can realize low-frequency sound production performance with a smaller amplitude (0.3 mm). In addition, by arranging a reinforcing structure for strengthening the strength of at least one of the first lamp panel and the optical film assembly, the structural strength of the first lamp panel or the optical film assembly can be enhanced, the area of the vibration division area can be minimized or even eliminated, so as to ensure the vibration energy transmission efficiency and guarantee the sound production effect.

[0045] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, in which the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0046] The display device 10 in this embodiment can be a liquid crystal display device. Alternatively, the display device 10 can be a Mini-LED display device. Compared to the LED backlight in an OLED display device, the backlight in a Mini-LED display device has greater rigidity, allowing the exciter 400 to drive the entire Mini-LED backlight to vibrate together. The display device can have various implementation forms, such as a television, smart television, monitor, electronic whiteboard, or electronic table.

[0047] Figure 13 This is a schematic diagram illustrating an operational scenario between a display device and a control device according to an exemplary embodiment of this application. Figure 13 As shown, a user can operate the display device 10 via the smart device 20 or the control device 900. In some embodiments, the display device 10 also communicates with the server 30. The display device 10 may communicate via a local area network (LAN), a wireless local area network (WLAN), and other networks. The server 30 can provide various content and interactive features to the display device 10. The server 30 may be a cluster or multiple clusters, and may include one or more types of servers.

[0048] Figure 14 This is a schematic diagram of the device structure shown in an example, such as... Figure 14 As shown, the display device 10 includes a tuner / demodulator 901, which receives broadcast television signals via wired or wireless means, and demodulates audio and video signals, such as EPG data signals, from multiple 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 a first interface to an nth interface configured as input / output.

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

[0051] In some embodiments, the display device 10 includes a memory 908;

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

[0053] In some embodiments, the display device 10 comprises a display 906, which comprises a display screen component configured to present a picture, and a driving component to drive the image display, configured to receive the image signal originated from the controller output, and to display the video content, the image content, and the menu operation interface component, and the user operation UI interface.

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

[0055] In some embodiments, the display device 10 comprises a communicator 902, which is a component configured to communicate with external devices or servers according to various communication protocol types. For example, the communicator 902 can comprise at least one of a Wifi module, a Bluetooth module, a wired Ethernet module, and other network communication protocol chips or near field communication protocol chips, and an infrared receiver. The display device 10 can establish the sending and receiving of control signals and data signals with the control device 900 or the server 30 through the communicator 902.

[0056] In some embodiments, the display device 10 comprises at least one of a user interface 910, which can be configured to receive the control signals of the control device 900 (such as an infrared remote controller, etc.).

[0057] In some embodiments, the display device 10 comprises a detector 903, which is configured to collect signals of the external environment or interaction with the outside. For example, the detector 903 comprises a light receiver configured to collect the intensity of ambient light; or the detector 903 comprises an image collector, such as a camera, which can be configured to collect the external environment scene, the user's attributes, or the user's interactive gestures; or the detector 903 comprises a sound collector, such as a microphone, which is configured to receive external sounds.

[0058] In some embodiments, the display device 10 comprises an external device interface 904, which can comprise 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 can also be a composite input / output interface formed by the above multiple interfaces.

[0059] In some embodiments, the controller 905 and the tuner demodulator 901 can be located in different split devices, i.e., the tuner demodulator 901 can also be in an external device of the main device where the controller 905 is located, such as an external set-top box, etc.

[0060] The controller 905 controls the operation of the display device and responds to the user's operation by storing various software control programs 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 displayed on the display 906, the controller 905 can perform an operation related to the object selected by the user command.

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

[0062] The user can input a user command through a graphic user interface (GUI) displayed on the display 906, and the user input interface receives the user input command through the graphic user interface (GUI). Alternatively, the user can input a user command by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through a sensor.

[0063] The "user interface" is a medium interface for interaction and information exchange between an application or an operating system and a user, and it realizes the conversion between the internal form of information and the form that the user can accept. The commonly used form of the user interface is a graphic user interface (GUI), which refers to a user interface related to computer operation displayed in a graphical manner. It can be an icon, a window, a control, etc. displayed on the display screen of an electronic device, and the control can include an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a widget, etc. visual interface elements.

[0064] The display device 10 has a sky side, an earth side, a left side, a right side, a front side, and a back side. The left side and the right side of the display device 10 refer to the left side and the right side of the user when the user faces the display surface of the display device. Accordingly, the side of the display device 10 facing the user is the front side, the side of the display device 10 facing away from the user is the back side, the upper side of the display device 10 is the sky side, and the lower side of the display device 10 is the earth side.

[0065] Reference Figure 1The display device 10 includes a display panel 100, which can be configured to display image information such as text, images, and the like. The display panel 100 includes a display area and a circuit board located on one side of the display area, through which the entire display panel 100 is driven and displayed. The display panel 100 is the main component of the display device 10, which mainly includes a liquid crystal display panel 100, which includes a color filter (CF) substrate, a thin film transistor (TFT) substrate (also referred to as an array substrate), and a liquid crystal (LC) layer located between the color filter substrate and the array substrate. Among them, the thin film transistor substrate is provided with a data line and a scan line, and the direction of the liquid crystal molecules is changed by whether the data line and the scan line are powered on or not, so that the light of the light source 240 is emitted through the color filter substrate and a picture of a preset color is generated.

[0066] Since the liquid crystal display panel 100 cannot emit light by itself, in order for the display device 10 to display normally, the display device 10 further includes a backlight assembly 200, which can be a direct type backlight assembly 200. The backlight assembly 200 includes a lamp plate 210. The lamp plate 210 is located on the light entrance side of the optical film assembly 110, and the lamp plate 210 is configured to generate light. The lamp plate 210 is configured to provide sufficient brightness and uniform distribution of backlight to the display panel 100. The display panel 100 is located on the light exit side of the optical film assembly 110, and the display panel 100 can modulate the backlight as needed to display different images.

[0067] In some embodiments, the display 906 includes a display panel 100 and a backlight assembly 200.

[0068] In combination with Figure 1 and Figure 2 , the backlight assembly 200 further includes an optical film assembly 110. The optical film assembly 110 and the display panel 100 form a cavity M therebetween, and the cavity M has a gas therein.

[0069] Among them, in some embodiments, the cavity M can be in a sealed state, at which time the sealed cavity M can be equivalent to a damping spring. When the coil assembly 410 vibrates, the vibration energy is transmitted to the lamp plate 210, and the lamp plate 210 compresses the gas in the cavity M. In this way, the gas can transmit the vibration energy to the display panel 100 to drive the display panel 100 to vibrate. The display panel 100 emits sound waves through vibration to emit sound, so that the display panel 100 can be used for display and can also be used instead of a loudspeaker to emit sound.

[0070] Of course, the present application is not limited thereto, and the cavity M can also be in a non-sealed state. In this case, a support transmission assembly (i.e., a support transmission assembly described below) can be arranged between the lamp panel 210 provided with the exciter 400 and the display panel 100, and the support transmission assembly is used to transmit vibration energy from the side of the lamp panel 210 to the display panel 100 to drive the display panel 100 to vibrate and emit sound. It can be understood that even if the cavity M is in a sealed state, the support transmission assembly can be arranged to improve the vibration transmission efficiency and maintain the stability of the gap of the cavity M.

[0071] The backlight assembly 200 includes a vibration region 200a and a vibration suppression region 200b (i.e., a region outside the vibration region 200a) in the plane direction of the backlight assembly 200, as shown in FIG. 2. Figure 2 As shown in FIG. 2, the vibration region 200a can be located in the middle of the backlight assembly 200, and the vibration suppression region 200b surrounds the vibration region 200a. The lamp panel 210 includes a first lamp panel 210a and a second lamp panel 210b, wherein the first lamp panel 210a is arranged in the vibration region 200a, and the second lamp panel 210b is arranged in the vibration suppression region 200b. The backlight assembly 200 further includes a support transmission assembly. The support transmission assembly is supported between the first lamp panel 210a and the optical film assembly 110, that is, the support transmission assembly can transmit vibration from the side of the first lamp panel 210a to the optical film assembly 110, and then the optical film assembly 110 transmits the vibration to the display panel 100 through the compression of the cavity M, while the second lamp panel 210b in the vibration suppression region 200b is not used to transmit vibration.

[0072] To realize the vibration of the first lamp panel 210a in the vibration region 200a, the display device 10 includes an exciter 400, which can include an exciter body and an actuator 410, wherein the actuator 410 is connected to the first lamp panel 210a to transmit vibration through the first lamp panel 210a, the optical film assembly 110, and the cavity M to the display panel 100 to drive the display panel 100 to vibrate and emit sound. In other words, the exciter 400 can directly drive the first lamp panel 210a to vibrate, and when the exciter 400 drives the first lamp panel 210a to vibrate, the vibration energy is sequentially transmitted to the display panel 100 through the first lamp panel 210a, the optical film assembly 110, and the sealed cavity M to drive 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 used for display and can also be used to replace the loudspeaker to emit sound.

[0073] In combination with Figures 3-5Since the amplitude is the largest at the position where the exciter 400 is located when any one of the first lamp plate 210a and the optical film assembly 110 vibrates, and the amplitude sharply decreases in a region away from the exciter 400 by a certain distance, which is a vibration division region of the first lamp plate 210a and the optical film assembly 110, in order to ensure the vibration transmission efficiency and avoid too fast attenuation of vibration energy, the reinforcing structure 250 for strengthening the strength of at least one of the first lamp plate 210a and the optical film assembly 110 can be arranged in the at least one of the first lamp plate 210a and the optical film assembly 110, for example, the reinforcing structure 250 can be arranged only on the first lamp plate 210a, or the reinforcing structure 250 can be arranged only on the optical film assembly 110, or the reinforcing structure 250 can be arranged on the first lamp plate 210a and the optical film assembly 110 respectively. By arranging the reinforcing structure 250, the structural strength of the first lamp plate 210a or the optical film assembly 110 can be enhanced, the area of the vibration division region can be reduced as much as possible or even eliminated, so as to ensure the vibration transmission efficiency and guarantee the sound production effect.

[0074] In addition, it needs to be emphasized that the first lamp plate 210a, the support transmission assembly and the optical film assembly 110 are sequentially connected, and the optical film assembly 110 and the display panel 100 are separated by the cavity M, therefore, the vibration transmission among the exciter 400, the first lamp plate 210a and the optical film assembly 110 is direct driving, which can ensure the vibration transmission efficiency; the vibration transmission between the optical film assembly 110 and the display panel 100 is viscous air gap transmission, which is indirect driving, and the area of the optical film assembly 110 is equal to the area of the display panel 100, so that the indirect driving can make the display panel 100 be stressed uniformly in the full plane range, and the actual vibration area of the display panel 100 is larger than the scheme with only direct driving in the related art, so that the display device 10 of the embodiment can make the display panel 100 realize the low-frequency sound production performance with a smaller amplitude (0.3 mm), and solve the short board that the display panel 100 cannot be driven with a large amplitude in the related art.

[0075] In addition, compared with the display device with an OLED light source as the light source in the related art, because the OLED display screen is a self-luminous screen, and the OLED display screen itself has a certain flexibility, the exciter is arranged on the back of the OLED display screen, so that the OLED display screen elastically deforms and emits sound under the excitation vibration of the exciter. 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 arranged on the back of the display panel 100, and the lamp plate in the backlight assembly 200 has a large hardness, and it is difficult to couple and transmit the vibration of the lamp plate to the display panel 100, and the transmission efficiency of the vibration force is low. Therefore, the support transmission assembly can be arranged in the cavity M between the display panel 100 and the lamp plate 210 of the Mini-LED display device 10 or other liquid crystal display device 10, and the support transmission assembly is used as a transmission medium of the vibration, so as to transmit the vibration of the lamp plate 210 to the display panel 100, thereby improving the transmission efficiency of the vibration from the lamp plate 210 to the display panel 100. In addition, the support 300 can maintain the gap of the cavity M between the lamp plate 210 and the display panel 100 within a predetermined range, so as to avoid the risk of collision noise and abrasion caused by the mutual contact of the light source 240 and the display panel 100 at a certain position.

[0076] According to some embodiments of the present application, the display device 10 can ensure the transmission efficiency of the vibration because the transmission of the vibration between the exciter 400, the first lamp plate 210a and the optical film assembly 110 is direct driving, and the display panel 100 can be uniformly stressed in the full plane range because the transmission of the vibration between the optical film assembly 110 and the display panel 100 is indirect driving through the sealed cavity M. Therefore, the display panel 100 of the present embodiment can realize the low-frequency sound emission performance with a smaller amplitude (0.3 mm), and thus the full-band sound emission performance of the display panel 100 is better. In addition, by arranging the reinforcing structure 250 for strengthening the strength of at least one of the first lamp plate 210a and the optical film assembly 110, the structural strength of the first lamp plate 210a or the optical film assembly 110 can be enhanced, the area of the vibration division area can be reduced as much as possible or even eliminated, so as to ensure the transmission efficiency of the vibration energy and guarantee the sound emission effect.

[0077] In some embodiments, at least part of the structure of the backboard 500 is arranged on the side of the lamp plate 210 facing away from the display panel 100 (for example, the rear side of the lamp plate 210), for example, the main body part of the backboard 500 is located on the side of the lamp plate 210 facing away from the display panel 100, and the frame part of the backboard 500 is located on the peripheral side of the lamp plate 210. The second lamp plate 210b is fixedly connected with the backboard 500. In some embodiments, the second lamp plate 210b and the backboard 500 are fixedly connected through the second connecting piece 221, and the second connecting piece 221 can be an adhesive such as double-sided tape or foam. In this way, the backboard 500 can be used to support the backlight assembly 200 and the display panel 100. The material of the backboard 500 can be aluminum alloy, steel, etc., to provide effective support.

[0078] In some embodiments, the display panel 100 can include a display area and a circuit board located on one side of the display area, and the entire display panel 100 is driven and displayed through the circuit board. The display panel 100 is the main component of the display device 10, which mainly includes a liquid crystal display panel 100, a color filter (CF) substrate, a thin film transistor (TFT) substrate (also known as an array substrate), and a liquid crystal (LC) layer. The liquid crystal layer is located between the color filter substrate and the array substrate. Among them, the thin film transistor substrate is provided with a data line and a scan line, and whether the data line and the scan line are energized controls the liquid crystal molecules to change direction, so that the light of the light source 240 is emitted through the color filter substrate and a picture of a preset color is generated.

[0079] In some embodiments, in combination with Figures 1-5 and Figure 12 The lamp plate 210 can include a plate body 230 and a light source 240. The plate body 230 can be an aluminum plate, a printed circuit board (PCB), etc. The light source 240 can be a light-emitting diode (LED), a mini light-emitting diode (Mini LED), or a micro light-emitting diode (Micro LED). The light source 240 can be multiple, and the multiple light sources 240 are arranged on the side of the plate body 230 facing the display panel 100 and are arranged at intervals, so as to provide backlight for the display panel 100. Among them, the light source 240 can be a lamp bead or a lamp strip, etc., and the multiple light sources 240 can be fixed on the plate body 230 through clamping, threaded connection, etc.

[0080] The light source of the type such as the sub-millimeter light emitting diode (such as Mini-LED) has a relatively compact size, and thus the gap of the cavity M between the lamp panel 210 and the liquid crystal display panel is relatively small, thereby reducing the thickness of the cavity M and improving the vibration transmission effect of the cavity M. Therefore, in the embodiment, the light source of the backlight module is the sub-millimeter light emitting diode (Mini-LED).

[0081] For example, the gap of the cavity M can be 0.3mm-10mm, the maximum gap of the cavity M can be 10mm, or the gap of the cavity M can also be 0.3mm or 1mm, etc. For example, when the gap of the cavity M is 1mm, the thickness of the cavity M is relatively small, and the transmission efficiency of the vibration force output by the exciter can be improved. Or, when the gap of the cavity M is 0.3mm, the distance between the exciter 400 and the display panel 100 is relatively close, the vibration is more intense, and the sound production effect is better. When the gap of the cavity M is 10mm, the thickness of the cavity M is relatively large, and mutual collision between the display panel 100 and the light source 240 at a certain position during vibration can be avoided. 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, 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, 10mm, etc. It should be noted that the numerical values and numerical ranges involved in the embodiments of the present application are approximate values, and there can be a certain range of errors due to the manufacturing process, which can be considered negligible by those skilled in the art.

[0082] In some embodiments, the optical film assembly 110 includes a diffusion plate capable of ensuring uniform light. The support transmission assembly includes a plurality of support pieces 300, which are arranged at intervals along the first lamp panel 210a. One end of the support piece 300 is connected to the first lamp panel 210a, and the other end is connected to the diffusion plate. In this way, the support piece 300 can be used as a vibration transmission medium to transmit the vibration on one side of the first lamp panel 210a to the diffusion plate, thereby improving the transmission efficiency of the vibration from the first lamp panel 210a to the display panel 100.

[0083] In addition, by arranging the support 300, the gap of the cavity M between the plate body 230 and the display panel 100 can be maintained within a preset range, and the light source 240 and the display panel 100 are prevented from colliding at a certain position to generate collision noise.

[0084] In addition, the optical film assembly 110 converts and homogenizes the light generated by the light plate 210, so that even if the support 300 is arranged on the light-emitting side of the light plate 210, no shadow is generated on the display panel 100, and the brightness of the display panel 100 is not uniform. Therefore, the shape and size of the support 300, the contact area between the support 300 and the diffusion film 113, and the like do not need to be limited. The cross section (perpendicular to the display device) of the support 300 can be rectangular, cylindrical, conical, trapezoidal, dumbbell-shaped, or other shapes.

[0085] It can be understood that the material of the support 300 can be a silica gel material that is easy to guide light. The silica gel material has a small hardness, that is, the support 300 is one of a silica gel member or a rubber member.

[0086] In addition, it should be noted that the temperature inside the display device 10 changes when the display device 10 is working, and the silica gel, rubber, and the like are aged with the change of the temperature, which reduces the buffering effect of the support 300, reduces the support strength, and reduces the vibration transmission efficiency. In some embodiments, the support 300 can also have a composite structure.

[0087] In some embodiments, the two ends of the support 300 can be connected by negative pressure adsorption. For example, the two ends of the support 300 can be provided with suction disc structures, and the two ends of the support 300 are fixedly connected to the light plate 210 and the display panel 100 by the suction disc structures, and the process is simple to implement.

[0088] In some embodiments, one end of the support 300 is connected by a first adhesive structure 310, and the other end of the support 300 is connected by a suction disc structure. For example, one end of the support 300 is connected to the light plate 210 by the first adhesive structure 310, and the other end of the support 300 is fixedly connected to the display panel 100 by the suction disc structure. Therefore, the support 300 can be fixed by double-sided adhesion or mechanical structure fixation, thereby realizing the vibration linkage of the light plate 210 and the display panel 100 and improving the vibration transmission efficiency. However, double-sided adhesion or mechanical structure fixation has the disadvantage of complex process implementation, and the suction disc adsorption scheme can improve the realizability of the scheme.

[0089] In some embodiments, the support 300 can be made of silica gel material with a set transparency, a plurality of bubble structures or light-guiding particles such as silica particles can be arranged in the support 300, and the distribution density of the bubble structures or the light-guiding particles such as silica particles gradually decreases along the direction away from the longitudinal central axis of the support 300, which is parallel to the plane where the silica particles are located. The bubble structures or the light-guiding particles with the above distribution rule are matched with the shape of the support 300, so that the support 300 has a light uniformization effect on the light emitted by the light source, which can make the light intensity of the light source uniformly distributed, and is beneficial to optimizing the display effect of the display device.

[0090] In some embodiments, the surface of the support 300 is coated with a reflective film layer or coated with a reflective material. In some embodiments, the support 300 also has a light control effect. In the local dimming display mode, the surface of the support 300 is coated with a reflective film layer or coated with a reflective material, so that the light emitted by different light control areas is reflected on the surface of the support 300 in other control areas. The support 300 reduces the mutual influence of light between different light control areas, thereby avoiding the light interference between different local dimming display areas.

[0091] According to the type of light emitted by the light source 240, the optical film assembly 110 can be of different types. For example, when the light source 240 emits white light, the optical film assembly 110 can include a reflective sheet, a light guide plate, a brightness enhancement film, etc. Among them, the reflective sheet is attached to the side of the plate body 230 where the light source 240 is arranged.

[0092] In some embodiments, in combination with Figures 3-5 The reinforcing structure 250 includes a first reinforcing structure 250a arranged on the side of the first lamp plate 210a away from the diffusion plate and in the vibration partition area of the first lamp plate 210a. The first reinforcing structure 250a is annular, for example, the first reinforcing structure 250a can be a circular ring structure, or a square structure or other closed ring structure. There is at least one first reinforcing structure 250a, that is, the first reinforcing structure 250a can be one or more, and the plurality refers to two or more. By arranging the first reinforcing structure 250a on the first lamp plate 210a, the first reinforcing structure 250a can connect different vibration areas 200a of the first lamp plate 210a, so that the different areas of the first lamp plate 210a are uniformly stressed, which is beneficial to the formation of the planar displacement type vibration of the first lamp plate 210a, that is, the different areas of the first lamp plate 210a are synchronously displaced during vibration, which reduces the partition vibration amplitude, ensures the transmission efficiency of vibration energy, and guarantees the sound production effect.

[0093] In some embodiments, in combination with Figure 3 andFigure 4 The first reinforcing structure 250a can be multiple, the multiple first reinforcing structures 250a are distributed along the radial direction of the first reinforcing structure 250a, the support 300 can be divided into multiple transmission groups, the transmission groups correspond to the first reinforcing structure 250a, and a plurality of supports 300 in each transmission group are distributed along the circumferential direction of the corresponding first reinforcing structure 250a and are arranged opposite to the corresponding first reinforcing structure 250a along the thickness direction of the lamp plate 210.

[0094] In the embodiment, on the basis of arranging the first reinforcing structure 250a in the segmented vibration region 200a of the first lamp plate 210a, the support 300 is arranged between the first lamp plate 210a and the optical film assembly 110 at a position region corresponding to the first reinforcing structure 250a, the segmented vibration amplitude of the first lamp plate 210a can be further inhibited by using the reverse pressure of the display panel 100 and the optical film assembly 110, and the vibration transmission efficiency can be ensured.

[0095] In some embodiments, referring to Figure 5 The first reinforcing structure 250a is one, the exciter 400 can include a first exciter 400a and a second exciter 400b, the first exciter 400a is arranged at the center of the first lamp plate 210a, the first reinforcing structure 250a is arranged around the first exciter 400a, and the distance between the first reinforcing structure 250a and the first exciter 400a can be reasonably adjusted according to actual needs. The second exciter 400b can be multiple, and the multiple second exciters 400b are uniformly distributed on the first reinforcing structure 250a along the circumferential direction of the first reinforcing structure 250a.

[0096] In this way, on the basis of driving of the first exciter 400a, by arranging multiple second exciters 400b and arranging the second exciters 400b in the segmented vibration region 200a of the first lamp plate 210a, the modal state of the first lamp plate 210a can be balanced by multi-point driving, and the goal of uniform stress of each region of the first lamp plate 210a can be achieved.

[0097] In some embodiments, the first reinforcing structure 250a can also be of other configurations, for example, the first reinforcing structure 250a includes a plurality of sub-reinforcing ribs, one end of the plurality of sub-reinforcing ribs is connected to each other to form a cross-connection portion, and the other end extends radially, of course, the number of sub-reinforcing ribs can be reasonably set according to the number of exciters 400. The first exciter 400a can be arranged at the cross-connection portion of the plurality of sub-reinforcing ribs, and the second exciter 400b can be arranged on the corresponding sub-reinforcing rib; or, the cross-connection portion of the plurality of sub-reinforcing ribs is provided with an exciter 400, and the plurality of sub-reinforcing ribs are not provided with an exciter 400; or, the part of the plurality of sub-reinforcing ribs away from the cross-connection portion is provided with an exciter 400, and the cross-connection portion is not provided with an exciter 400. In this way, the goal of uniform stress of each area of the first lamp panel 210a can be achieved, and the overall layout is relatively simple and easy to implement.

[0098] In some embodiments, referring to Figure 1 , after the first lamp panel 210a transmits the vibration to the diffusion plate of the optical film assembly 110, the diffusion plate generates vibration. The vibration of the diffusion plate is affected by the modal of each frequency band to generate a resonance peak and valley, causing abnormal vibration of the diffusion plate and affecting the sound performance. In addition, the divided vibration of the middle and high frequencies causes the effective vibration area of the diffusion plate to gradually decrease, affecting the vibration transmission efficiency. Based on this, in the present embodiment, the reinforcing structure can also include a second reinforcing structure 250b, the second reinforcing structure 250b is configured as a vibration buffer, and the configuration of the vibration buffer can be the same as that of the support 300. The second reinforcing structure 250b is supported between the second lamp panel 210b and the diffusion plate. In this way, by connecting the diffusion plate and the second lamp panel 210b of the vibration suppression area 200b through the second reinforcing structure 250b, the vibration abnormal position of the diffusion plate is supported by the second lamp panel 210b of the vibration suppression area 200b, thereby achieving the purpose of suppressing the abnormal vibration of the diffusion plate.

[0099] In some embodiments, referring to Figure 12 , the lamp panel 210 can include a panel body 230;

[0100] In some embodiments, referring to Figure 12 , the lamp panel 210 can include a light source 240, and the light source 240 is arranged on the side of the panel body 230 facing the optical film assembly 110;

[0101] In some embodiments, referring to Figure 12 , the panel body 230 includes a base layer 231;

[0102] In some embodiments, referring to Figure 12The plate body 230 comprises a composite reinforcing layer 234 which forms a reinforcing structure. In this way, the lamp plate 210 is replaced by a composite structure from a single material, which can improve the weight and strength of the lamp plate 210. The improvement in the strength of the first lamp plate 210a helps to improve the efficiency of mid-high frequency vibration transmission, and the improvement in the weight of the first lamp plate 210a helps to improve the efficiency of full-band vibration transmission.

[0103] In some embodiments, the base layer 231 is an aluminum plate, and / or the composite reinforcing layer 234 is a honeycomb plate. In this way, the overall weight of the first lamp plate 210a is reduced while the structural strength of the first lamp plate 210a is enhanced, thereby reducing the amplitude of the divided vibration and improving the efficiency of full-band vibration transmission.

[0104] In some embodiments, with reference to Figure 1 and Figures 6-11 The first lamp plate 210a is adapted to move relative to the second lamp plate 210b under the push of the exciter 400. In other words, when the exciter 400 drives the first lamp plate 210a to vibrate, the first lamp plate 210a moves independently of the second lamp plate 210b and generates a displacement relative to the second lamp plate 210b. The first lamp plate 210a and the second lamp plate 210b have a certain displacement difference in the thickness direction of the display device 10. In this way, the second lamp plate 210b can avoid generating resistance to the first lamp plate 210a, the resistance required to be overcome by the exciter 400 is reduced, the vibration loss is reduced, and the vibration transmission efficiency is further ensured.

[0105] It should be emphasized that, since the exciter 400 is directly driven between the first lamp plate 210a and the diffuser plate, and does not need to rely on the gas viscosity of the sealed air gap for push force transmission, in the present embodiment, the first lamp plate 210a and the second lamp plate 210b around it can be a non-sealed structure. On the one hand, this can reduce the reaction force of the gas between the first lamp plate 210a and the diffuser plate on the first lamp plate 210a, reduce the push resistance, and be conducive to improving the vibration transmission efficiency. On the other hand, it can reduce the amount of second connecting member 221 used for installing the first lamp plate 210a and the second lamp plate 210b, thereby reducing costs.

[0106] In some embodiments, the first lamp plate 210a is connected to the back plate 500 through the first connecting member 213, and the first connecting member 213 is an elastic connecting member. In this way, the back plate 500 can provide vibration support for the first lamp plate 210a.

[0107] For example Figure 1As shown, the periphery of the first lamp plate 210a can be attached to the back plate 500 by elastic double-sided adhesive, and to prevent the display panel 100 from being too bright in some areas, when the first lamp plate 210a is attached to the back plate 500 by elastic double-sided adhesive, it is necessary to ensure that the side surface of the first lamp plate 210a after attachment faces the display panel 100 is flush with the side surface of the second lamp plate 210b facing the display panel 100, so that the image brightness of the display panel 100 is uniform.

[0108] Alternatively, a plurality of guide posts can be provided on the back plate 500, for example, the guide posts can be mortise posts or other structures, and the guide posts can be four, the four corners of the first lamp plate 210a are respectively provided with guide holes matched with the guide posts, each guide post is arranged in the corresponding guide hole, and the outer side of the guide post is further sleeved with a first connecting piece 213 such as a spring, both ends of the first connecting piece 213 are respectively connected with the back plate 500 and the first lamp plate 210a, and when the first lamp plate 210a is in the initial position of vibration, the side surface of the first lamp plate 210a facing the display panel 100 is flush with the side surface of the second lamp plate 210b facing the display panel 100, so that the image brightness of the display panel 100 is uniform.

[0109] Reference Figure 11 In some alternative embodiments, since the second lamp plate 210b is fixedly connected with the back plate 500, the first lamp plate 210a can also be connected with the second lamp plate 210b through the first connecting piece 213, for example, the periphery of the first lamp plate 210a is attached to the back plate 500 by elastic double-sided adhesive, and it is necessary to ensure that the side surface of the first lamp plate 210a after attachment faces the display panel 100 is flush with the side surface of the second lamp plate 210b facing the display panel 100, so that the image brightness of the display panel 100 is uniform.

[0110] In addition to the above-mentioned elastic connection of the first lamp plate 210a and the back plate 500 and the elastic connection of the first lamp plate 210a and the second lamp plate 210b, in the present embodiment, the exciter 400 can be fixedly connected with the back plate 500 to support the first lamp plate 210a. That is, the first lamp plate 210a has no direct connection relationship with the back plate 500, but the first lamp plate 210a is connected with the back plate 500 through the exciter 400. Further, to better support the first lamp plate 210a, in the present embodiment, a high-resonant-frequency exciter 400 can also be arranged at each of the four corners of the first lamp plate 210a, and the four high-frequency exciters 400 have the functions of supporting and exciting vibration, ensuring that the first lamp plate 210a vibrates uniformly without deviation. The central position of the first lamp plate 210a can be provided with a low-resonant-frequency exciter 400 (smaller elastic vibration system), which mainly aims to excite the first lamp plate 210a to vibrate.

[0111] In some embodiments, reference Figures 7-10 The display device 10 may also include a sound-emitting plate 212. Specifically, the thickness of the sound-emitting plate 212 can be 1mm-4mm, for example, 2mm. The sound-emitting plate 212 is attached to the side of the first lamp plate 210a opposite to the display panel 100. For example, the sound-emitting plate 212 can be a honeycomb board, and the sound-emitting plate 212 can be bonded and fixed to the first lamp plate 210a by adhesives such as double-sided tape. The exciter body and the actuator 410 are both connected to the sound-emitting plate 212. Thus, the actuator 410 drives the sound-emitting plate 212 to vibrate, which in turn drives the first lamp plate 210a to vibrate. The sound-emitting plate 212 helps to enhance the strength of the first lamp plate 210a and improve the vibration transmission efficiency. The first lamp plate 210a can also dissipate heat through the sound-emitting plate 212.

[0112] In some embodiments, the sound-emitting panel 212 is any one of a honeycomb panel, a sandwich panel, or a carbon fiber panel. The sandwich panel can be any one of a honeycomb sandwich panel, a foam sandwich panel, a wood sandwich panel, or an acrylic panel, which is low in cost and readily available. Specifically, the honeycomb sandwich panel can be an aluminum honeycomb sandwich panel, an aramid honeycomb sandwich panel, etc.; the foam sandwich panel can be a polyvinyl chloride (PVC) foam sandwich panel, a polymethacrylimide (PMI) foam sandwich panel, etc.; and the wood sandwich panel can be balsa wood or other balsa wood.

[0113] As is well known to those skilled in the art, the sound quality can be measured in terms of volume, frequency response range, and timbre. Among these, the sound emitted by the sandwich panel has a higher volume and a wider, less fluctuating audio response compared to the sound emitted by the aluminum plate. In other words, by setting the sound-emitting plate 212, the sound emitted by the display device 10 can have better sound quality.

[0114] In some embodiments, reference Figure 8 The sound-emitting plate 212 can be divided into multiple sub-plates 2121, which are spaced apart from each other. The exciter 400 is connected to the first lamp plate 210a through the multiple sub-plates 2121. In this way, the weight of the sound-emitting plate 212 can be further reduced, thereby reducing the mass that the exciter 400 needs to push, reducing energy loss, and improving vibration transmission efficiency.

[0115] In some embodiments, combined with Figure 7 , Figure 9 and Figure 10 The first lamp plate 210a in the vibration region 200a can be at least one; for example, the first lamp plate 210a can be two, three, or more. Figure 9 As shown, there are two first lamp panels 210a side by side, and the sound-emitting plate 212 can be located at the joint of the two first lamp panels 210a, so that the exciter 400 can drive the two first lamp panels 210a to vibrate simultaneously; for exampleFigure 10 As shown, the first lamp plate 210a is three arranged side by side, the sound emitting plate 212 can be two, two sound emitting plates 212 are respectively arranged at two splicing positions defined by the three sound emitting plates 212, and the exciter 400 can be connected with the two sound emitting plates 212 at the same time to drive the three first lamp plates 210a to vibrate at the same time.

[0116] In some embodiments, when the number of the first lamp plates 210a of the vibration area 200a is multiple, the length of each first lamp plate 210a can be less than the length of the second lamp plate 210b, which helps to reduce the mass that the exciter 400 needs to push, reduce energy loss, and improve vibration transmission efficiency.

[0117] The exciter 400 of some embodiments of the present application can be any one or more of an electromagnetic exciter, a magnetostrictive exciter and a piezoelectric exciter, which has high applicability. In some embodiments, the exciter 400 can include a magnetic field generating unit (such as a magnet) and a vibration coil, the magnetic field generating unit is configured to generate a magnetic field, and by inputting a constantly changing current in the vibration coil, the force acting on the vibration coil in the magnetic field generated by the magnetic field generating unit constantly changes, thereby generating vibration.

[0118] In some embodiments, the exciter 400 includes a magnetic field generating unit and a vibration coil, the magnetic field generating unit is configured to generate a magnetic field, and the vibration coil is configured to generate vibration by inputting a constantly changing current in the vibration coil. Figure 15 The exciter 400 of some embodiments of the present application includes an actuator 410, a spring 420 and a shell 430, the vibration output end of the actuator 410 is connected with the splicing position of the lamp plate 210, one end of the spring 420 is connected with the actuator 410, and the other end of the spring 420 is connected with the shell 430.

[0119] When the exciter 400 starts, the actuator 410 vibrates and drives the lamp plate 210 to vibrate, and the vibration force is transmitted to the display panel 100 through the gas in the sealed cavity M to drive the display panel 100 to vibrate and emit sound. In this way, the display device of some embodiments of the present application can realize front sound emission, and the sound image position is approximately coincident with the center position of the picture, realizing sound and picture integration, and the user's audio-visual effect is better.

[0120] In some embodiments, the central axis of the exciter 400 is perpendicular to the lamp plate 210, and the vibration output direction of the exciter 400 is along the central axis and perpendicular to the surface of the display device, that is, Figure 9 the vertical direction.

[0121] The vibration output end of the actuator 410 forms a connecting structure 411 to increase the connection area of the actuator 410 and the lamp plate 210, and avoid the actuator 410 and the lamp plate from being separated from each other.

[0122] In some embodiments, the connecting structure 411 is in a sheet shape, so that the actuating member 410 and the lamp plate 210 have a large connecting area, and the sheet shape structure is conducive to reducing the weight of the exciter 400.

[0123] The central axis of the elastic wave 420 of some embodiments of the present application coincides with the central axis of the exciter 400. The elastic wave 420 includes a body part 4201, a first connecting part 4202, and a second connecting part 4203, wherein the body part 4201 is arranged in the plane parallel to the display panel, the body part 4201 is annular, and the body part 4201 is wavy in the radial direction, so that the elastic wave 420 has elasticity. The inner end of the body part 4201 is bent to form the first connecting part 4202, and the first connecting part 4202 is connected with the actuating member 410; the outer end of the body part 4201 is bent to form the second connecting part 4203, and the second connecting part 4203 is connected with the shell 430. The second connecting part 4203 can be directly connected with the shell 430, or the second connecting part 4203 can be indirectly connected with the shell 430 through other components.

[0124] For example, the first connecting part 4202 and the second connecting part 4203 are both in a sheet shape, which is conducive to increasing the connecting area of the elastic wave 420 with the shell 430 and the actuating member 410, and is conducive to improving the stability of the connection and heat transfer.

[0125] The exciter 400 of some embodiments of the present application transmits the heat generated by the vibration of the actuating member 410 to the shell 430 through the elastic wave 420 for heat dissipation. In this way, the heat generated by the actuating member 410 can be dissipated not only through air but also through the elastic wave 420, which is conducive to reducing the temperature of the actuating member 410 and reducing the influence of the local temperature on the image display quality. Moreover, the first connecting part 4202 increases the connecting area with the actuating member 410, and the second connecting part 4203 increases the connecting area with the shell 430, thereby improving the heat dissipation effect.

[0126] The elastic wave 420 of some embodiments of the present application increases the heat conduction path of the actuating member 410. The heat conduction coefficient of the elastic wave 420 is about 3-4 times that of copper, and the transverse heat conduction coefficient of the elastic wave 420 can reach 1000 W / m·K, which is obviously more efficient than air cooling, and can reduce the temperature of the actuating member 410, reduce the local temperature of the screen of the display device, avoid the appearance of "hot" spots on the screen, reduce the non-uniformity of the screen brightness and color, and increase the maximum power and working reliability of the exciter or loudspeaker.

[0127] The heat conduction coefficient of the elastic wave 420 of some embodiments of the present application is several times that of general metal materials such as copper and aluminum, so that the heat of the actuating member 410 can be mainly transmitted to the exciter body through the elastic wave 420, thereby reducing the temperature of the vibration output end of the actuating member 410 and reducing the influence of the local temperature on the image display quality of the display device.

[0128] In some embodiments, the elastic wave 420 is bonded with the actuating member 410 and the shell 430, for example, the elastic wave 420 is bonded with the actuating member 410 and the shell 430 by glue, and the connection is simple and stable.

[0129] With reference back to Figure 15 The exciter 400 of some embodiments of the present application further comprises a compression ring 440 configured to compress the elastic wave 420 against the shell 430, and the compression ring 440 also has heat conduction performance. For example, the compression ring 440 can be a metal piece, which is conducive to ensuring the heat transfer efficiency. The second connecting portion 4203 of the elastic wave 420 is compressed against the shell 430 by the compression ring 440, which is conducive to improving the stability and tightness of the connection between the elastic wave 420 and the shell 430, and facilitating heat transfer.

[0130] For example, the compression ring 440 can be bonded with the shell 430 and the elastic wave 420, and the connection is simple and stable.

[0131] With reference back to Figure 15 Taking the exciter 400 as an example of an electromagnetic exciter, the electromagnetic exciter comprises a magnetic assembly 450 and a voice coil, wherein the magnetic assembly 450 is configured to generate a magnetic field, and the voice coil vibrates along the axial direction of the voice coil in the magnetic field.

[0132] The magnetic assembly 450 comprises a magnetic conducting piece 451 and a magnetic piece 452, and a magnetic air gap N is formed between the magnetic conducting piece 451 and the magnetic piece 452. The magnetic conducting piece 451 is in the shape of a cylinder with an opening, and the magnetic piece 452 is arranged on the bottom surface inside the magnetic conducting piece 451. There is a gap between the inner wall surface of the magnetic conducting piece 451 and the magnetic piece 452, which becomes the magnetic air gap N. The magnetic assembly 450 is configured to provide a stable magnetic field in the magnetic air gap N.

[0133] One end of the voice coil is connected to the lamp panel 210, and a sheet-shaped connecting structure 411 can also be arranged between the voice coil and the lamp panel 210 to increase the connection area between the voice coil and the lamp panel 210 and avoid mutual separation between the voice coil and the lamp panel 210. The other end of the voice coil is inserted into the magnetic air gap N, and the voice coil is fixed to the shell 430 by the elastic wave. With the change of the magnetic field, the voice coil is forced to reciprocate along the axial direction of itself. That is, when the exciter 400 is an electromagnetic exciter, the voice coil constitutes the actuating member 410, and one end of the actuating member 410 away from the vibration output end is located in the magnetic air gap N.

[0134] Thus, under the action of the magnetic field, the electromagnetic force makes the voice coil resonate at a higher frequency, directly vibrating the lamp panel 210, and the reaction force of the electromagnetic force makes the exciter 400 resonate at a lower frequency and vibrate the lamp panel 210 through the connecting piece 211. The shell of the exciter 400 is not fixed and is vibrated with the vibration of the driven lamp panel 210, which is the biggest difference between the excitation mode of the OLED screen exciter shell fixed on the support.

[0135] The magnetic conducting piece 451 is fixedly connected with the shell 430, and the other end of the elastic wave 420 is connected with the shell 430 through the magnetic conducting piece 451. Specifically, the second connecting part 4203 of the elastic wave 420 is pressed on the magnetic conducting piece 451 by the pressing ring 440. Exemplarily, the second connecting part 4203 and the magnetic conducting piece 451 are bonded, the pressing ring 440 and the magnetic conducting piece 451 are bonded, and the pressing ring 440 and the shell 430 are bonded, and the connection mode is simple and stable.

[0136] The exciter 400 of some embodiments of the present application realizes the connection between the elastic wave 420 and the shell 430 through the magnetic conducting piece 451, which reduces the width size of the exciter 400. Since the axial size of the actuator 410 is large, the lamination and pressing of the pressing ring 440, the magnetic conducting piece 451 and the shell 430 will not affect the overall thickness of the exciter 400. The connection mode of the elastic wave 420 is set in this way, which not only ensures the stability of the connection, but also facilitates the compact structure of the exciter 400.

[0137] Specifically, the magnetic conducting piece 451 of some embodiments of the present application comprises a U-shaped body and a third connecting part. The two ends of the opening of the U-shaped body extend away from each other to form the third connecting part, and the third connecting part is connected with the shell 430.

[0138] Continuing to refer to Figure 15 The part of the magnetic conducting piece 451 in contact with the elastic wave 420 is provided with a ventilation hole to improve the heat dissipation efficiency of the magnetic conducting piece 451 and improve the heat dissipation amount of the actuator 410 through the elastic wave 420. The ventilation hole can be a circular hole, and the shape, number and arrangement mode of the ventilation hole are not limited in the embodiments of the present application.

[0139] In some possible embodiments, the part of the shell 430 in contact with the magnetic conducting piece 451 is provided with a ventilation hole, which can be opposite to the ventilation hole to further improve the heat dissipation efficiency. The ventilation hole can be a circular hole, and the shape, number and arrangement mode of the ventilation hole are not limited in the embodiments of the present application.

[0140] In some embodiments, the shell 430 of the exciter 400 is connected with the back plate 500 through a fixing pin, and the fixing pin can be perpendicular to the back plate 500. The shell 430 is provided with an elastic pad 460, and the shell 430 is connected with the back plate 500 through the elastic pad 460.

[0141] The material of the elastic pad 460 can be silica gel, rubber, etc. The elastic pad 460 can be sleeved on the outside of the fixing pin. The housing 430 is provided with a matching hole. The outer wall surface of the elastic pad 460 is provided with a clamping groove for clamping the housing 430. In this way, the two sides of the matching hole each have a part of the elastic pad 460, that is, the cross-sectional shape of the elastic pad 460 can be approximately in the shape of an I-beam. During the vibration of the exciter 400, the housing 430 does not interfere with the fixing pin or the back plate 500. The structure and material of the elastic pad 460 are not limited in the embodiment.

[0142] The elastic force direction of the elastic pad 460 is parallel to the thickness direction of the display device 10, so that the housing 430 and the back plate 500 have a variable relative position. That is, during the vibration of the exciter 400, the housing 430 can reciprocally move relative to the back plate 500. At this time, the exciter 400 also constitutes an approximately inertial driving mode to drive the lamp plate 210 to vibrate, avoiding the influence of the relative fixation of the housing 430 and the back plate 500 on the frequency response of the display device 10.

[0143] In some embodiments, the optical film assembly 110 can further include a fluorescent film and a brightness enhancement film. The diffusion plate is arranged on the front side of the light source 240, and is used to mix the light of the plurality of light sources 240 uniformly, that is, to convert 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, so that 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 improve the brightness of the light.

[0144] In some embodiments, the display panel 100 (i.e., the liquid crystal screen described above) and the optical film assembly 110 can be pressed together to avoid the air gap between the display panel 100, the brightness enhancement film, the fluorescent film, and the diffusion plate, which can communicate with the external air.

[0145] In some embodiments, the display panel 100 and the optical film assembly 110 can also be bonded and fixed together, for example, by using light-sensitive glue (UV glue), foam, double-sided adhesive, etc. That is, the display panel 100 and the optical film assembly 110 can be connected as a whole by bonding and fixing. At this time, the cavity M is formed between the optical film assembly 110 and the display panel 100.

[0146] In some embodiments, the display device 10 further includes a rear shell (not shown in the figure). The rear shell is located on the side of the back plate 500 away from the display panel 100, that is, the rear shell is arranged on the rear side of the back plate 500. The controller and the electrical connection line of the display device 10 can be arranged between the back plate 500 and the rear shell to simplify the appearance of the display device 10. The material of the rear shell can be plastic or metal.

[0147] In this application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection, and can also be communication; can be direct connection, can also be indirect connection through intermediate medium, can be internal communication of two elements or interaction relationship of two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0148] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0149] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, characterized by comprising: The display device comprises: a display panel configured to display image information; a backlight assembly comprising a vibration region in a self-plane direction, the backlight assembly comprising: a lamp plate comprising a first lamp plate and a second lamp plate, the first lamp plate being arranged in the vibration region, and the second lamp plate being arranged outside the vibration region; an optical film assembly, the lamp plate being arranged on a light-incident side of the optical film assembly, the display panel being arranged on a light-emitting side of the optical film assembly, and a cavity being formed between the optical film assembly and the display panel; a support transmission assembly supported between the first lamp plate and the optical film assembly; an exciter connected to the first lamp plate to transmit vibration through the first lamp plate, the optical film assembly and the cavity to the display panel to drive the display panel to vibrate and emit sound; at least one of the first lamp plate and the optical film assembly is provided with a reinforcing structure.

2. The display device of claim 1, wherein, The optical film assembly comprises a diffusion plate, and the support transmission assembly comprises a plurality of supports, the plurality of supports are arranged along the first lamp plate, one end of each support being connected to the first lamp plate and the other end being connected to the diffusion plate.

3. The display device of claim 2, wherein, The reinforcing structure comprises a first reinforcing structure arranged on a side of the first lamp plate facing away from the diffusion plate, the first reinforcing structure being annular, and there being at least one first reinforcing structure.

4. The display device of claim 3, wherein: there are a plurality of first reinforcing structures, the plurality of first reinforcing structures being arranged along the radial direction of the first reinforcing structure; the supports are divided into a plurality of transmission groups corresponding to the first reinforcing structures, a plurality of supports in each transmission group being arranged along the circumferential direction of the corresponding first reinforcing structure and being arranged opposite to the corresponding first reinforcing structure in the thickness direction of the lamp plate.

5. The display device of claim 3, wherein, There is one first reinforcing structure, and the exciter comprises a first exciter and a second exciter, the first exciter being arranged at the center of the first lamp plate, and the first reinforcing structure surrounding the first exciter, there are a plurality of second exciters, the plurality of second exciters being uniformly distributed along the circumferential direction of the first reinforcing structure.

6. The display device of claim 2, wherein, The reinforcing structure further comprises a second reinforcing structure, the second reinforcing structure comprising a vibration buffer supported between the second lamp plate and the diffusion plate.

7. The display device of any of claims 1-6, wherein, The lamp plate comprises a plate body and a light source, the light source being arranged on a side of the plate body facing the optical film assembly, the plate body comprising a base layer and a composite reinforcing layer, and the composite reinforcing layer constituting the reinforcing structure.

8. The display device of any of claims 1-6, wherein, Further comprising: a back plate arranged on a side of the lamp plate facing away from the display panel, the second lamp plate being fixedly connected to the back plate.

9. The display device of claim 8, wherein, The first lamp plate is adapted to move relative to the second lamp plate under the pushing of the exciter.

10. The display device of claim 9, wherein, The first lamp plate is connected to the back plate through a first connecting member, or the exciter is fixedly connected to the back plate to support the first lamp plate.

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