Display device

Abstract

The invention provides a display device, relates to the technical field of display, and is used for solving the problem that the sound production effect of the display device is poor. The backlight module comprises an optical film set, a lamp panel and a supporting piece, and the optical film set is located between the display panel and the lamp panel; the excitation unit comprises a vibration coil and a magnetic assembly, the vibration coil is attached to the side wall face, deviating from the optical film set, of the lamp panel, the magnetic assembly is located on the side, deviating from the optical film set, of the lamp panel, the magnetic assembly is configured to generate a first magnetic field, and the vibration coil is configured to generate an alternating second magnetic field after being powered on; the second magnetic field interacts with the first magnetic field to drive the lamp panel to vibrate; the display panel and the lamp panel are arranged in a spaced mode and form a gas layer, and the supporting piece elastically abuts against the position between the lamp panel and the optical film set so that vibration of the lamp panel can be transmitted to the display panel. The display device provided by the invention is good in sound production effect.

Description

Technical Field

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

[0002] With the development of display technology, liquid crystal display (LCD) devices are increasingly used in people's work and life due to their small size and low power consumption.

[0003] The display device includes a display panel and a backlight module. The backlight module has a backlight source, and a gas layer is formed between the display panel and the backlight module to accommodate the backlight source. The display device also includes an exciter that can drive the backlight module to vibrate. The vibration of the backlight module can drive the display panel to vibrate and produce sound through the gas layer.

[0004] However, the vibration transmission efficiency of the gas layer is low, and the sound effect of the display device is poor. Summary of the Invention

[0005] An embodiment of the present application provides a display device having a good sound effect.

[0006] In a first aspect, an embodiment of the present application provides a display device, comprising:

[0007] Display panel;

[0008] A backlight module, comprising:

[0009] Optical film set;

[0010] Light board;

[0011] and a support member, wherein the optical film group is located between the display panel and the light board;

[0012] An excitation unit, the excitation unit comprising:

[0013] Vibrating coil;

[0014] and a magnetic component, wherein the vibration coil is attached to a side wall of the light board facing away from the optical film group, the magnetic component is located on a side of the light board facing away from the optical film group, the magnetic component is configured to generate a first magnetic field, and the vibration coil is configured to generate an alternating second magnetic field when energized, so that the second magnetic field interacts with the first magnetic field and drives the light board to vibrate;

[0015] The display panel and the lamp board are spaced apart to form a gas layer, and the support member is elastically pressed between the lamp board and the optical film group to transmit the vibration of the lamp board to the display panel.

[0016] This, on the one hand, improves the vibration transmission efficiency between the light board and the display panel through the support member, resulting in a better sound effect for the display device. On the other hand, the vibration coil is attached to the light board in a planar structure, which covers a larger area. The force applied to the light board and the display panel is more even, that is, the pressure is less, and they can withstand greater vibration forces, thus achieving a better sound effect for the display device.

[0017] In some embodiments of the present application, a first conductive circuit is attached to the side wall surface of the light board facing the optical film group, and a second conductive circuit is attached to the side wall surface of the light board away from the optical film group, wherein at least part of the second conductive circuit constitutes the vibration coil.

[0018] In some embodiments of the present application, there are multiple light boards, and the multiple light boards are arranged in an array, and each light board is correspondingly provided with one or more vibration coils.

[0019] In some embodiments of the present application, the number of the magnetic components is less than or equal to the number of the vibration coils.

[0020] In some embodiments of the present application, the vibration coil includes a meandering vibration portion; the magnetic assembly includes a plurality of magnetic parts arranged in parallel, any two adjacent magnetic parts have opposite polarities, and the projections of any two adjacent magnetic parts on the lamp board are configured to be separated by different parts of the vibration portion.

[0021] In some embodiments of the present application, the vibration part includes a straight line segment and a connecting segment. There are multiple straight line segments, and the multiple straight line segments are parallel to each other. Any two adjacent straight line segments are connected in series through the connecting segment. The magnetic part is correspondingly provided between any two adjacent straight line segments, and the extension direction of the magnetic part is parallel to the straight line segment.

[0022] In some embodiments of the present application, the input end and the output end of the vibration coil are both located outside the end portion of the magnetic member projected onto the lamp panel.

[0023] In some embodiments of the present application, there are multiple vibration parts, and the extension directions of the multiple vibration parts are the same; the vibration coil also includes a series part, and any two adjacent vibration parts are connected in series through the series part, so that the current directions in different vibration parts are the same.

[0024] In some embodiments of the present application, the magnetic assembly further includes a magnetic conductive plate, and the plurality of magnetic members are mounted on the magnetic conductive plate; the display device further includes a back plate, and the magnetic conductive plate is fixedly connected to the back plate.

[0025] In a second aspect, an embodiment of the present application provides a display device, comprising:

[0026] Display panel;

[0027] A backlight module, comprising an optical film group, a light board and a support member, wherein the optical film group is located between the display panel and the light board;

[0028] an excitation unit, the excitation unit comprising a vibration coil and a magnetic component, the vibration coil and the magnetic component being configured to generate vibration and drive the light panel to vibrate;

[0029] The display panel and the lamp board are spaced apart to form a gas layer, and the support member is elastically pressed between the lamp board and the optical film group to transmit the vibration of the lamp board to the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the implementation methods in the embodiments of the present application or related technologies, a brief introduction will be given below to the drawings required for use in the embodiments or related technology descriptions. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0031] Figure 1 A schematic diagram of an operation scenario between a display device and a control device according to some embodiments of the present application;

[0032] Figure 2 A block diagram of a display device according to some embodiments of the present application;

[0033] Figure 3 This is a schematic structural diagram of a display device according to some embodiments of the present application;

[0034] Figure 4 This is a schematic diagram of the structure of the light board in some embodiments of the present application;

[0035] Figure 5 This is a schematic structural diagram of an excitation unit in some embodiments of the present application;

[0036] Figure 6 This is a schematic structural diagram of a vibration coil in some embodiments of the present application;

[0037] Figure 7 This is a schematic structural diagram of a magnetic assembly in some embodiments of the present application;

[0038] Figure 8 This is a schematic structural diagram of a light board and an excitation unit in some embodiments of the present application;

[0039] Figure 9 Another structural schematic diagram of the light board and the excitation unit in some embodiments of the present application;

[0040] Figure 10 This is another structural schematic diagram of the light board and the excitation unit in some embodiments of the present application.

[0041] Description of reference numerals:

[0042] 10-Display device;

[0043] 100-display panel;

[0044] 200-backlight module;

[0045] 210-optical film set;

[0046] 220 - light board; 221 - light board body; 222 - backlight source; 223 - first conductive circuit;

[0047] 230-support member;

[0048] 300- incentive unit;

[0049] 310-vibration coil; 311-vibration part; 3111-straight line segment; 3112-connecting segment; 312-series part;

[0050] 320-magnetic parts;

[0051] 400-magnetic plate;

[0052] 500-back panel;

[0053] 610-buffer; 620-seal;

[0054] 20-smart device; 30-server;

[0055] 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;

[0056] M-gas layer. DETAILED DESCRIPTION

[0057] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0058] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0059] In addition, the terms "comprises" and "comprising" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0060] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0061] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0062] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0063] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0064] To optimize the sound quality of LCD devices, an exciter is typically installed on the device's light panel. This exciter drives the light panel to vibrate, and the vibrations are transmitted to the display panel through the air layer between the two panels, causing the display panel to vibrate and produce sound. This results in a better acoustic effect, facilitates the integration of sound and image, and enhances the user's audiovisual experience. However, due to the poor vibration transmission efficiency of the air layer, the vibrations of the exciter cannot be effectively transmitted to the display panel, resulting in a poor sound quality for the display device.

[0065] In view of this, an embodiment of the present application provides a display device, wherein the excitation unit includes a vibration coil and a magnetic component. On the one hand, the vibration coil has a planar structure and is attached to the lamp board. In this way, the laying area of the vibration coil is larger to disperse the force on the lamp board, that is, the pressure on the position where the vibration coil is set on the lamp board is smaller, and the force on the lamp board and the display panel is more uniform, so that the lamp board and the display panel can withstand a larger vibration force, so that the display device has a better sound effect. On the other hand, a support is provided between the gas layer between the display panel and the lamp board, which can reduce the vibration transmission loss between the vibration coil and the display panel, that is, improve the vibration transmission efficiency between the lamp board and the display panel, so that the display device has a better sound effect.

[0066] The display device provided in the embodiments of the present application may have various implementation forms, for example, it may be a television, a smart TV, a monitor, an electronic whiteboard, an electronic desktop, etc. Figure 1 This is an implementation of the display device of the present application.

[0067] Figure 1 This is a schematic diagram of an operation scenario between a display device and a control device in some embodiments of the present application. Figure 1 As shown, the user can operate the display device 10 through the smart device 20 or the control device 900. In some embodiments, the display device 10 also communicates data with the server 30. The display device 10 can be allowed to communicate via a local area network (LAN), a wireless local area network (WLAN), and other networks. The server 30 can provide various content and interactions to the display device 10. The server 30 can be a cluster or multiple clusters, and can include one or more types of servers.

[0068] Figure 2 This is a block diagram of a display device configuration according to some embodiments of the present application. Figure 2The display device 10 includes a tuner-demodulator 901, which receives broadcast television signals via a wired or wireless reception method, and demodulates audio and video signals, such as EPG data signals, from multiple wireless or wired broadcast television signals.

[0069] In some embodiments, the display device 10 includes a controller 905 ; in some embodiments, the controller includes a processor, a video processor, an audio processor, a graphics processor, RAM, ROM, and first to Nth interfaces configured as input / output.

[0070] In some embodiments, the display device 10 includes an audio output interface 907;

[0071] In some embodiments, the display device 10 includes a memory 908;

[0072] In some embodiments, the display device 10 includes a power supply 909;

[0073] In some embodiments, the display device 10 includes a display 906, which includes a display screen component configured to present a picture, and a driving component for driving the image display, and is configured to receive an image signal output from a controller to display video content, image content, and a menu control interface component and a user control UI interface.

[0074] 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.

[0075] In some embodiments, the display device 10 includes a communicator 902, which is a component configured to communicate with an external device or server according to various communication protocols. For example, the communicator 902 may include at least one of a Wi-Fi module, a Bluetooth module, a wired Ethernet module, or other network communication protocol chip, a near-field communication protocol chip, and an infrared receiver. The display device 10 can establish transmission and reception of control signals and data signals with the control device 900 or the server 30 via the communicator 902.

[0076] In some embodiments, the display device 10 includes at least one of the user interfaces 910 , and the user interface 910 may be configured to receive a control signal from the control device 900 (eg, an infrared remote controller, etc.).

[0077] In some embodiments, the display device 10 includes a detector 903 configured to collect signals from the external environment or external interactions. For example, the detector 903 may include a light receiver configured as a sensor to collect ambient light intensity; or the detector 903 may include an image collector, such as a camera, configured to collect external environmental scenes, user attributes, or user interaction gestures; or the detector 903 may include a sound collector, such as a microphone, configured to receive external sounds.

[0078] In some embodiments, the display device 10 includes an external device interface 904. The external device interface 904 may include, but is not limited to, any one or more of the following: a high-definition multimedia interface (HDMI), an analog or digital high-definition component input interface (component), a composite video input interface (CVBS), a USB input interface (USB), an RGB port, etc. It may also be a composite input / output interface formed by multiple of the above interfaces.

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

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

[0081] In some embodiments, the controller includes a central processing unit (CPU), a video processor, an audio processor, a graphics processing unit (GPU), RAM RANDOM ACCESS MEMORY (RAM), ROM (READ-ONLY MEMORY, ROM), a first interface to an Nth interface configured as input / output, a communication bus (BUS), etc.

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

[0083] "User interface" is the medium interface for interaction and information exchange between application programs or operating systems and users. It realizes the conversion between the internal form of information and the form acceptable to users. The commonly used form of user interface is graphical user interface (GRAPHICAL USER INTERFACE). SER I NTERFACE A GUI (Graphical User Interface) is a graphical user interface related to computer operations. It can be an icon, window, control, or other interface element displayed on the display screen of an electronic device. Controls can include icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, widgets, and other visual interface elements.

[0084] Figure 3 This is a schematic structural diagram of a display device according to some embodiments of the present application. Figure 4 This is a schematic structural diagram of the light board of some embodiments of the present application. Figure 5 This is a schematic structural diagram of an excitation unit in some embodiments of the present application. Figure 6 This is a schematic structural diagram of the vibration coil of some embodiments of the present application. Figure 7 Schematic diagram of the structure of the magnetic component of some embodiments of the present application. Figure 8 This is a schematic structural diagram of the light board and the excitation unit of some embodiments of the present application. Figure 9 This is another structural schematic diagram of the light board and the excitation unit in some embodiments of the present application. Figure 10 This is another structural schematic diagram of the light board and the excitation unit in some embodiments of the present application.

[0085] See also Figures 3 to 10 In some embodiments, this embodiment provides a display device 10, which is a liquid crystal display device. The display device 10 includes a display panel 100, which is configured to display image information such as text and images.

[0086] The display device 10 has a top side, a bottom side, a left side, a right side, and a front side and a back side. The left side and the right side of the display device 10 refer to the left and right sides of the user when the user is facing the display panel 100. 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.

[0087] The display panel 100 is a main component of the display device 10, which mainly includes a liquid crystal display panel, which includes a color filter (CF) substrate, a thin film transistor (TFT) substrate (also called an array substrate), and a liquid crystal (LC) substrate. I QUID C RYSTAL) layer, and the liquid crystal layer is located between the color filter substrate and the array substrate. The thin-film transistor substrate is provided with data lines and scan lines. The power supply of the data lines and scan lines controls the orientation of the liquid crystal molecules, thereby directing light from the backlight source 222 through the color filter substrate and generating a preset color image.

[0088] Since the liquid crystal display panel itself cannot emit light, in order to allow the display device 10 to display normally, the display device 10 further includes a backlight module 200 , which may be a direct-type backlight module.

[0089] In some embodiments, the backlight module 200 includes an optical film assembly 210 . The optical film assembly 210 is disposed on a side of the display panel 100 that is away from the display surface.

[0090] In some embodiments, the backlight module 200 also includes a light board 220, and the light board 220 is located on the side of the optical film group 210 facing away from the display panel 100, that is, the optical film group 210 is located between the display panel 100 and the light board 220, the display panel 100 is located on the light-emitting side of the optical film group 210, and the light board 220 is located on the light-incident side of the optical film group 210, and the display panel 100, the optical film group 210 and the light board 220 are stacked along the thickness direction of the display device 10.

[0091] In some embodiments, the light board 220 has a light source that provides backlight for the display panel 100 . The type of the light board 220 varies depending on the type of the light source.

[0092] In some embodiments, the light board 220 may be a surface light source, such as a flat fluorescent board.

[0093] In some embodiments, this embodiment is described by taking the light board 220 including multiple point light sources as an example, wherein the light board 220 includes a light board body 221, and the light board body 221 can be an aluminum plate, a printed circuit board (PCB), etc.

[0094] In some embodiments, the light board 220 further includes a backlight source 222. The backlight source 222 may be a plurality of light emitting diodes (LEDs) disposed at intervals on the light board 220. IGHT -E MITTING D IODE , LED), sub-millimeter light emitting diode (M INI -L IGHT E MITTING The backlight source 222 may be provided with a transparent packaging member on its outer side to protect the backlight source 222 .

[0095] In some embodiments, the backlight 222 is located on the sidewall of the light panel body 221 facing the optical film assembly 210. Depending on the type of light emitted by the backlight 222, the optical film assembly 210 may be of different types. For example, when the backlight 222 emits white light, the optical film assembly 210 may include a stacked reflective sheet, a light guide plate, a brightness enhancement film, and the like. The reflective sheet is attached to the side of the light panel 220 where the backlight 222 is located.

[0096] When the backlight source 222 emits blue light, the optical film set 210 may include multiple stacked films.

[0097] In some embodiments, the optical film group 210 may include a diffusion film, which is disposed on a side facing the light board 220 , so that the user can evenly mix the light from the multiple backlight sources 222 , ie, convert the point light source into a surface light source.

[0098] In some embodiments, the optical film group 210 may include a fluorescent film that converts the light emitted by the backlight source 222 into white light. In this way, the color of the light emitted by the backlight source 222 is not limited, and the backlight source 222 can emit blue light or purple light.

[0099] In some embodiments, the optical film assembly 210 may include a brightness enhancement film configured to increase the brightness of light. It is understood that when the backlight source 222 emits white light, the optical film assembly 210 may also include a diffusion film, a fluorescent film, and a brightness enhancement film. This embodiment uses the example of the optical film assembly 210 including the diffusion film, the fluorescent film, and the brightness enhancement film as an example.

[0100] In some embodiments, an edge of the display panel 100 is connected to an edge of the light board 220 , so that the display panel 100 and the light board 220 are spaced apart and a gas layer M is formed therebetween.

[0101] In some embodiments, the display panel 100 and the optical film assembly 210 can be fixedly connected as a whole by bonding, and there are no air gaps between the liquid crystal display panel and the brightness enhancement film, between the brightness enhancement film and the fluorescent film, and between the fluorescent film and the diffusion film. In this case, the light board 220 and the optical film assembly 210 are spaced apart to form a gas layer M, and the backlight source 222 is disposed within the gas layer M. The gas layer M can be equivalent to a damping spring configured to transmit vibration.

[0102] In some embodiments, the gas layer M can be closed, that is, there is no flow between the gas layer M and the external control. Accordingly, the edges of the display panel 100 and the edges of the light board 220 can be provided with seals 620. For example, seals 620 can be provided between the display panel 100 and the middle frame of the display device 10, and between the light board 220 and the back panel 500 of the display device 10.

[0103] In some embodiments, the gas layer M may also be in an incompletely sealed state. For example, in some embodiments, the edge of the display panel 100 is sealed to the edge of the light board 220, thereby forming a sealed gas layer M. In other embodiments, there is no seal between the display panel 100 and the light board 220, so that the gas layer M can communicate with the outside air through structures such as the assembly gap between the components. In still other embodiments, a specific communication channel can be provided in the lateral gap between the display panel 100 and the light board 220 to connect the gas layer M with the outside air while having a certain filtering effect on the vibration transmitted by the gas layer M. As long as the gas layer M can normally transmit the vibration force of the excitation unit so that the display panel 100 can vibrate and make sounds normally, the sealing state of the gas layer M is not limited here.

[0104] In some embodiments, the size of the gap in the gas layer M can be determined based on the light source of the light panel 220. For example, the size of the gap is related to the size of the light source. However, sub-millimeter light emitting diodes (such as MINI LEDs) and other light sources have relatively compact dimensions, which correspondingly result in a smaller gap in the gas layer M. This reduces the size of the gap in the gas layer M and improves the vibration transmission efficiency of the gas layer M. Therefore, in this embodiment, the light source of the backlight module is described as a sub-millimeter light emitting diode (MINI LED).

[0105] In some embodiments, the gap of the gas layer M can be 0.3MM-10MM, that is, the gap of the gas layer M can be up to 10MM, or the gap of the gas layer M can also be 0.3MM or 1MM, etc., to adapt to the size of different types of backlight sources 222. In some embodiments, the gap of the gas layer M can be 0.1MM, 0.2MM, 0.3MM, 0.4MM, 0.5MM, 0.6MM, 0.7MM, 0.8MM, 0.9MM, 1.0MM, 1.5MM, 2MM, 2.5MM, 3MM, 3.5MM, 4MM, 4.5MM, 5MM, 5.5MM, 6MM, 6.5MM, 7MM, 7.5MM, 8MM, 8.5MM, 9MM, 9.5MM, 10MM, etc. It should be noted that the numerical values and numerical ranges involved in the embodiments of the present application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors, which can be considered negligible by those skilled in the art.

[0106] In some embodiments, the gap in the gas layer M can be 1 mm. This relatively small gap in the gas layer M can improve vibration transmission efficiency and allow the display device 10 to have a smaller thickness. Alternatively, when the gap in the gas layer M is 0.3 mm, the distance between the excitation unit 300 and the display panel 100 is closer, the vibration is more intense, and the sound effect of the display device 10 is better. When the gas layer M is 10 mm, the gap in the gas layer M is relatively large, which can prevent collision between the display panel 100 and the light source at a certain position during vibration.

[0107] In some embodiments, the display device 10 includes an excitation unit 300 configured to drive the display panel 100 to vibrate and generate sound. The excitation unit 300 includes a vibration coil 310 , which is attached to the sidewall of the light board 220 facing away from the optical film assembly 210 . This means the vibration coil 310 has a planar structure. The vibration coil 310 is relatively small in the vertical direction of the display panel 100 and occupies a relatively large area on the light board 220 .

[0108] In some embodiments, the excitation unit 300 also includes a magnetic component, which is located on the side of the lamp board 220 away from the optical film group 210, that is, the magnetic component is located on the rear side of the vibration coil 310, and the magnetic component is configured to generate a first magnetic field. The first magnetic field is a static magnetic field, and its intensity and direction remain unchanged. The vibration coil 310 is located in the first magnetic field. The vibration coil 310 is configured to generate an alternating second magnetic field after power is turned on, that is, the direction, intensity, etc. of the second magnetic field can be changed according to the size and direction of the current passed through the vibration coil 310. In this way, the second magnetic field interacts with the first magnetic field, and accordingly, the vibration coil 310 can be subjected to a constantly changing force to cause the vibration coil 310 to move toward or away from the magnetic component, that is, to drive the vibration coil 310 and the lamp board 220 to vibrate.

[0109] In this way, since the laying area of the vibration coil 310 is large, the force on the lamp board 220 and the display panel 100 is more uniform, that is, the pressure on the lamp board 220 and the display panel 100 is small, and the lamp board 220 and the display panel 100 can withstand a larger vibration force, so that the display device 10 has a better sound effect.

[0110] In some embodiments, the backlight module 200 further includes a support member 230 , which is elastically pressed between the lamp board 220 and the optical film assembly 210 to transmit vibration of the lamp board 220 to the display panel 100 .

[0111] In the related art, compared with display devices that use OLED (Organic Light-Emitting Diode) light sources as light sources, because the OLED display screen is a self-luminous screen and the OLED display screen itself has a certain degree of flexibility, an exciter is set on the back of the OLED display screen, and the OLED display screen can be elastically deformed and make sounds under the excitation vibration of the exciter. In liquid crystal display devices, the liquid crystal display device has a backlight module 200, and the exciter cannot be directly set on the back of the display panel. In addition, the lamp board in the backlight module 200 is relatively hard, making it difficult to couple and transmit its own vibration to the display panel, and the transmission efficiency of the vibration force is low. Therefore, a support member 230 can be set between the display panel and the lamp board of a MINI-LED display device or other liquid crystal display device, and the support member 230 can be used as a vibration transmission medium to transmit the vibration of the lamp board to the display panel, thereby improving the vibration transmission efficiency from the lamp board to the display panel. In addition, the support member 230 can maintain the gap of the gas layer M between the light board and the display panel within a preset range, thereby preventing the light source and the display panel from touching each other at a certain position and causing collision noise and abrasion.

[0112] In some embodiments, the support member 230 is an elastic member. For example, the support member 230 is a rubber member, a silicone member, or a foam member. The support member 230 has good elasticity and can be elastically deformed under the action of an external force, so that the size of the support member 230 in the thickness direction of the display device changes. In this way, the display panel 100 and the backlight module 200 can both be elastically supported by the support member 230. Even if the display panel 100 is subjected to an external force, such as an impact or collision with an external object, the support member 230 can also alleviate the impact on the display panel 100 or the backlight module 200 through its own elastic deformation, and reduce the deformation of the display panel 100 or the backlight module 200, thereby avoiding large deformation of the display panel 100 or the backlight module 200. The structural stability and safety of the display device 10 are relatively high.

[0113] In some embodiments, by disposing a support member 230 between the light board 220 and the optical film assembly 210, the support member 230 can continuously support the light board 220 and the optical film assembly 210 during the reciprocating vibration of the light board 220. That is, one end of the support member 230 is connected to the light board 220, and the other end is connected to the optical film assembly 210. When the light board 220 and the optical film assembly 210 move closer to or farther away from each other, the connection between the support member 230 and the light board 220, and between the support member 230 and the optical film assembly 210, remains intact. In this way, the optical film assembly 210 and the light board 220 can be connected as a whole via the support member 230. That is, the display panel 100, the optical film assembly 210, and the light board 220 can be equivalent to a single-layer screen. In this way, the vibration of the light board 220 can be transmitted to the display panel 100 via the gas layer M and the support member 230, resulting in a high vibration transmission efficiency and a better sound effect of the display device 10.

[0114] In some embodiments, when the gap of the gas layer M is large, for example, when the gap is 4MM-10MM, when the lamp board 220 vibrates, the sensitivity of the air pressure change in the gas layer M is low. By setting a support member 230 between the lamp board 220 and the optical film group 210, the gas volume between the lamp board 220 and the optical film group 210 can also be reduced, thereby improving the sensitivity of the air pressure change and the vibration transmission efficiency of the excitation unit 300.

[0115] Regarding the support member 230 , considering that the temperature inside the display device 10 increases when the display device 10 is working, the support member 230 may also be a composite material member.

[0116] In some embodiments, the support member 230 includes a support portion, which is a rigid member, for example, a metal member or a plastic member. In this way, the size and support strength of the support portion are not affected by temperature.

[0117] In some embodiments, the support member 230 further includes a buffer portion connected to the support portion. The buffer portion is made of an elastic material. For example, the buffer portion is a rubber member, a silicone member, or a foam member. The buffer portion has good elasticity and can have good buffering performance.

[0118] In this way, the impact of temperature increase on the support member 230 can be reduced, and the support member 230 can be effectively supported between the optical film group 210 and the light board 220, avoiding the shrinkage of the support member 230 due to temperature increase, and also avoiding the optical film group 210 from being concave and deformed or even contacting the backlight source 222, and the structural stability of the display device 10 is relatively high.

[0119] In some embodiments, because the optical film assembly 210 converts and evens out the light emitted by the backlight source 222, even if the support member 230 is provided on the side of the light board 220 where the backlight source 222 is located, shadows can be avoided on the display panel 100, thereby ensuring a more uniform brightness of the display panel 100. Therefore, in terms of the display brightness of the display panel 100, there are no restrictions on the shape and size of the support member 230, nor on the contact area between the support member 230 and the diffuser film.

[0120] In some embodiments, considering the large size of the display device 10, the number of the supporting members 230 can be multiple (see Figures 8 to 10 ) Multiple support members 230 are arranged at intervals so that the diffusion films at different positions can be supported by the support members 230, and the gaps at different positions between the light board 220 and the optical film group 210 can be maintained within a preset range.

[0121] Taking into account the vibration transmission loss, the closer the position of the lamp board 220 is to the excitation unit 300, the greater the vibration amplitude of the lamp board 220 is, and the farther away from the excitation unit 300, the gradually decreasing vibration amplitude of the lamp board 220 is. In some embodiments, the vertical height of the support member 230 along the display panel 100 in a natural state gradually decreases from the side close to the excitation unit 300 to the side away from the excitation unit 300, and the vertical height of the support member 230 along the display panel 100 in a natural state is greater than the maximum spacing of the gas layer M at its corresponding position.

[0122] That is, to avoid vibration transmission failure, the height of the support member 230 required when the support member 230 is separated from the optical film group or the light board 220 gradually decreases from the side close to the excitation unit 300 to the side far away from the excitation unit 300.

[0123] Then, since the heights of the support members 230 are set at different levels, for example, the base height of the support members 230 can be based on the height of the support members 230 at the position close to the excitation unit 300. The farther away from the excitation unit 300, the smaller the height of the support members 230.

[0124] That is to say, by setting the support members 230 at different heights in the natural state, it is possible to make each support member 230 between the optical film group and the light board 220 in a compressed state of interference fit at a lower production cost, thereby avoiding separation of the support member 230 near the excitation unit 300 and the optical film group or the light board 220, and the support effect between the optical film group and the light board 220 is better, and the vibration transmission efficiency is higher.

[0125] Taking into account vibration transmission loss, the closer to the excitation unit 300, the greater the vibration intensity, and the farther away from the excitation unit 300, the gradually decreasing vibration intensity. In some embodiments, at least one of the distribution density of the support members 230 and the support stiffness of a single support member 230 gradually decreases from the side closer to the excitation unit 300 to the side farther away from the excitation unit 300. In other words, the closer to the excitation unit 300, the greater the support strength required for the optical film assembly 210, and the farther away from the excitation unit 300, the smaller the support strength required for the optical film assembly 210. Accordingly, at least one of the distribution density and support stiffness of the support members 230 is set to be unequal.

[0126] In some embodiments, the projection of the excitation unit 300 on the light board 220 at least partially covers the projection of the support member 230 on the light board 220. In other words, at least a portion of the support member 230 is disposed opposite to the excitation unit 300, so that the support member 230 can be effectively supported at a position of the light board 220 opposite to the excitation unit 300.

[0127] Among them, when the distribution areas of the support members 230 at different positions are not equal, the closer the position is to the excitation unit 300, the more support members 230 are arranged, and the farther the position is from the excitation unit 300, the fewer support members 230 are arranged. In other words, the closer the position is to the excitation unit 300, the more support members 230 are involved in supporting the optical film assembly 210 and transmitting vibration, and the supporting effect is better; and since a large number of support members 230 jointly provide support and transmit vibration, the pressure on a single support member 230 is small, and the service life of the support members 230 is longer; at the same time, even if some of the support members 230 near the excitation unit 300 fail to support, since there are more support members 230 near the excitation unit 300, the support failure and vibration transmission failure at the excitation unit 300 will not occur.

[0128] When the support stiffness of different support members 230 is unequal, the support stiffness of the support member 230 closer to the excitation unit 300 is greater, while the support stiffness of the support member 230 farther from the excitation unit 300 is smaller. In other words, the closer the support member 230 is to the excitation unit 300, the stronger its ability to resist deformation. This can prevent elastic failure of the support member 230 due to excessive expansion and contraction, which in turn leads to support failure of the support member 230 and failure of vibration transmission.

[0129] It is understandable that the distribution area and support stiffness of the support member 230 can be set to be different, and this embodiment does not limit this.

[0130] Taking into account vibration transmission loss, the closer to the excitation unit 300, the greater the vibration intensity, while the farther away from the excitation unit 300, the gradually decreasing vibration intensity. In some embodiments, at least one of the hardness of a single support member 230 and the cross-sectional area of a single support member 230 gradually decreases from the side closest to the excitation unit 300 to the side farther away from the excitation unit 300. In other words, the closer to the excitation unit 300, the greater the support strength required for the optical film assembly 210, while the farther away from the excitation unit 300, the less the support strength required for the optical film assembly 210. Accordingly, at least one of the hardness and cross-sectional area of the support member 230 can also be set to be different.

[0131] When the hardness of different support members 230 is set to be different, the support members 230 closer to the excitation unit 300 have greater hardness, while the support members 230 farther away from the excitation unit 300 have less hardness. In other words, the closer the support members 230 are to the excitation unit 300, the stronger their ability to resist deformation. In this way, the support members 230 can effectively support the light board 220 and the diffuser 232, and the support members 230 have better support and vibration transmission effects.

[0132] When the cross-sectional areas of the different support members 230 are set to be different, the cross-sectional area of the support member 230 closer to the excitation unit 300 is larger, and the cross-sectional area of the support member 230 farther away from the excitation unit 300 is smaller. In other words, the closer the support member 230 is to the excitation unit 300, the larger its cross-sectional area, and the less likely it is to deform by expansion and contraction. In this way, the support member 230 can effectively support the light board 220 and the optical film assembly, and the support member 230 has a better support effect and vibration transmission effect.

[0133] It is understandable that the hardness and cross-sectional area of the support member 230 can be set to be different, and this embodiment does not limit this.

[0134] In some embodiments, at least one of the vertical height of the support member 230 along the display panel 100 in a natural state, the distribution density of the support member 230, the stiffness of a single support member 230, the hardness of a single support member 230, and the cross-sectional area of a single support member 230 gradually decreases from the side close to the excitation unit 300 to the side away from the excitation unit 300 to adapt to different assembly process requirements, production costs, etc.

[0135] In some embodiments, see Figure 4 A first conductive circuit 223 is attached to the side wall surface of the light board 220 facing the optical film group 210. The first conductive circuit 223 is configured to be electrically connected to the backlight source 222. When the first conductive circuit 223 is energized, the backlight source 222 can be energized and emit light to provide backlight for the display panel 100.

[0136] In some embodiments, a second conductive circuit is attached to the side wall of the light board 220 facing away from the optical film assembly 210 , that is, the second conductive circuit is located on the rear side wall of the light board body 221 .

[0137] In some embodiments, the first conductive circuit 223 and the second conductive circuit are independent of each other, that is, there is no electrical connection between the first conductive circuit 223 and the second conductive circuit. In this way, whether the second conductive circuit is energized will not affect the first conductive circuit 223 providing backlight for the display panel 100.

[0138] In some embodiments, the first conductive trace 223 and the second conductive trace may constitute part of the light board 220. Exemplarily, the light board 220 is a double-sided copper-clad printed circuit board provided with a backlight source 222. The first conductive trace 223 and the second conductive trace are both copper foil traces printed on the light board body 221. The light board 220 is easy to form and has a low manufacturing cost.

[0139] In some embodiments, at least a portion of the second conductive circuit constitutes the vibration coil 310 , that is, the vibration coil 310 can constitute a partial structure of the light board 220 and be formed together, resulting in lower manufacturing costs.

[0140] Considering that the display device 10 is generally large in size and a large-sized light board 220 is not easy to form, in some embodiments, the number of light boards 220 can be multiple, and multiple light boards 220 are arranged in an array for splicing.

[0141] In some embodiments, when there are multiple light boards 220 , the support member 230 may be disposed on the light board 220 , or between any two adjacent light boards 220 , or the support member 230 may be disposed on the light board 220 and between any two adjacent light boards 220 at the same time.

[0142] In some embodiments, each light board 220 is provided with one or more vibration coils 310. The number of vibration coils 310 provided on each light board 220 can be set as needed, and this embodiment does not limit this.

[0143] In some embodiments, the number of vibration coils 310 provided on each light board 220 is the same, for example, one vibration coil 310 is provided on each light board 220. In this way, the light boards 220 can be assembled as standard parts to reduce the difficulty of manufacturing and assembly.

[0144] In some embodiments, the number of magnetic components is less than (e.g. Figure 10 as shown) or equal to (as shown Figure 8 and Figure 9In this way, magnetic components can be selectively arranged at different positions of the display device 10 to adapt to different sound channels of the display device.

[0145] In some embodiments, the number of light panels 220 is two (eg Figure 8 As shown), the two light boards 220 are arranged horizontally, and a magnetic component is correspondingly provided in the middle of the two light boards 220, so that the display device 10 can realize left and right channel sound.

[0146] In some embodiments, the number of light panels 220 is three (eg Figure 9 As shown), the three light panels 220 are arranged horizontally, and a magnetic component is correspondingly provided in the middle of the two light panels 220 on the left and right sides of the display device. In this way, the display device 10 can realize left and right channel sound.

[0147] In some embodiments, there are multiple light panels 220 (e.g. Figure 10 As shown), multiple light panels 220 are arranged vertically and horizontally, and magnetic components can be set correspondingly on the left side, right side and top of the display device 10 to achieve multi-channel sound of the display device 10.

[0148] In some embodiments, when there are multiple magnetic components, some or all of the corresponding vibration coils 310 can be selectively energized so that some or all of the excitation units 300 drive the display panel 100 to vibrate and produce sound.

[0149] In some embodiments, the vibration coil 310 may be wound in a spiral shape. The winding shape of the vibration coil 310 may be a regular geometric shape such as a square, a circle, or other irregular shapes.

[0150] See also Figure 5 and Figure 6 In some embodiments, the vibration coil 310 includes a meandering vibration portion 311, that is, the vibration portion 311 has an approximately wavy structure. Compared with the spiral vibration portion 311, the meandering vibration portion 311 has a smaller inductance, which helps to improve the high-frequency response of the excitation unit 300 and broaden the frequency bandwidth of the excitation unit 300.

[0151] In some embodiments, the vibration coil 310 may have different structures according to different meandering directions of the vibration portion 311. For example, the vibration portion 311 extends in an arc-shaped meandering manner.

[0152] In some embodiments, the magnetic assembly includes a plurality of parallel magnetic members 320. The magnetic members 320 are permanent magnets. The materials of the magnetic members 320 may be ferrite magnets, etc., which are well known to those skilled in the art. Any two adjacent magnetic members 320 have opposite polarities, forming a closed magnetic circuit. For example, one of the north pole and the south pole of the magnetic member 320 faces the front side of the display device 10, and the other faces the rear side of the display device 10.

[0153] In some embodiments, multiple magnetic members 320 are spaced apart, and the projections of any two adjacent magnetic members 320 on the light board 220 are configured to be separated by different portions of the vibrating portion 311. In other words, the serpentine vibrating portion 311 forms a recessed area, and the projections of the magnetic members 320 on the light board 220 are located within this recessed area. This allows the portion of the vibrating portion 311 between two adjacent magnetic members 320 to be located within the first magnetic field. When the vibrating coil 310 is energized, this portion of the vibrating portion 311 can function as a vibration drive, driving the light board 220 to vibrate, achieving a more effective vibration drive effect.

[0154] In some embodiments, the vibration portion 311 may have different meandering structures. For example, the vibration portion 311 may be in a sawtooth shape.

[0155] In some embodiments, the vibration portion 311 includes a plurality of straight line segments 3111 , each of which can extend in any direction so that the vibration portion 311 has different coiled structures. illustratively, the vibration portion 311 is approximately arranged in a trapezoidal shape.

[0156] In some embodiments, multiple straight segments 3111 are parallel to each other, resulting in a simpler structure for the vibrating portion 311 and easier molding. Any two adjacent straight segments 3111 are connected in series via a connecting segment 3112, with the currents flowing in the two adjacent straight segments 3111 flowing in opposite directions. This effectively reduces the inductance of the straight segments 3111, allowing the vibrating coil 310 to function as a nearly pure resistive load. This prevents the display device 10 from being quiet at high frequencies, resulting in better sound quality.

[0157] In some embodiments, the straight line segment 3111 may extend in a horizontal direction, a vertical direction, or any other direction.

[0158] In some embodiments, multiple straight line segments 3111 are arranged at intervals, and a magnetic member 320 is provided between any two adjacent straight line segments 3111. That is, the two adjacent straight line segments 3111 and the connecting segment 3112 connecting the two straight line segments 3111 form a recessed area, and the projection of the magnetic member 320 on the light board 220 is located in the recessed area.

[0159] In some embodiments, depending on the depth of the recessed area, the magnetic member 320 can have different structures. For example, the magnetic member 320 can be a block-shaped member. Alternatively, the extension direction of the magnetic member 320 is parallel to the straight segment 3111, and accordingly, the magnetic member 320 is a strip-shaped member. In this way, along the length of the straight segment 3111, the force applied to different positions of the straight segment 3111 is relatively consistent. In other words, the force and vibration amplitude of the straight segment 3111 are relatively uniform, the vibration of the display panel 100 is relatively uniform, and the sound effect of the display device is better.

[0160] In some embodiments, when there are multiple vibration coils 310, the straight segments 3111 in different vibration coils 310 can extend in any direction. For example, the straight segments 3111 in two vibration coils 310 extend in directions perpendicular to each other. In some embodiments, the straight segments 3111 in different vibration coils 310 can all extend in the same direction to reduce the difficulty of assembling the magnetic assembly and the light board 220.

[0161] In some embodiments, the projection of the magnetic part 320 on the lamp board 220 can be located in the middle position of two adjacent straight line segments 3111. In this way, the force on each straight line segment 3111 is more uniform, avoiding the problem that different straight line segments 3111 are subjected to different magnetic field strengths and the vibration amplitudes at different positions of the straight line segments 3111 are greatly different.

[0162] In some embodiments, the input and output ends of the vibration coil 310 can be located at any position of the vibration coil 310. For example, the input and output ends of the vibration coil 310 are respectively located on opposite sides of the vibration coil 310, or the input and output ends of the vibration coil 310 are both located on the same side of the vibration coil 310 to simplify the lead structure between the vibration coil 310 and the control unit.

[0163] In some embodiments, the input and output ends of the vibration coil 310 are both located outside the end of the magnetic member 320 projected onto the light board 220. For example, the input and output ends of the vibration coil 310 correspond to the connecting section 3112 of the vibration coil 310. This allows the lead connecting the vibration coil 310 to the control unit to avoid the magnetic member 320. The lead connecting the vibration coil 310 to the control unit and the magnetic member 320 are not stacked in the thickness direction, thus helping to reduce the thickness of the display device 10.

[0164] In some embodiments, there are multiple vibration parts 311, for example, the number of vibration parts 311 can be two, three, four or more, and the extension directions of the multiple vibration parts 311 are the same. In this way, there are multiple straight line segments 3111 in parallel at the position of any straight line segment 3111. The vibration coil 310 also includes a series part 312. Any two adjacent vibration parts 311 are connected in series through the series part 312 so that the current directions in different vibration parts 311 are the same, so as to enhance the strength of the second magnetic field at the position of the straight line segment 3111. In this way, when a small current is passed through the vibration coil 310, the display panel 100 can have a larger vibration amplitude.

[0165] In some embodiments, the light panel body 221 may also be a hollow plate-like structure (not shown) to reduce the weight and density of the light panel body 221 and improve the damping of the light panel body 221. This allows the light panel 220 to have a higher flexural modulus, which can increase the number of modal resonant frequencies, improve the frequency response transmitted to the display panel 100, expand the frequency range of sound emitted by the display panel 100, and avoid significant peaks and valleys and distortion in the audio response of the display panel 100 that could affect the listening experience.

[0166] In some embodiments, the light panel body 221 may be a sandwich panel.

[0167] In some embodiments, the sandwich panel includes a core material, and the core material can be made of paper, aramid, metal, or other rigid foam materials.

[0168] In some embodiments, the sandwich panel includes a skin attached to opposite sides of the core material. The skin can be made of aluminum foil, plastic, or the like, as long as it can stably secure the first conductive trace 223 and the second conductive trace. This embodiment does not limit the material of the skin.

[0169] Those skilled in the art are well aware that sound quality can be measured in terms of volume, frequency response range, timbre, and other aspects. Specifically, the sound produced by a sandwich panel has a higher volume and a wider, less undulating audio response than the sound produced by an aluminum panel. In other words, by making the light panel body 221 hollow, the sound produced by the display device can have better sound quality.

[0170] In some embodiments, the magnetic component also includes a magnetic conductive plate 400. The material of the magnetic conductive plate 400 can be iron, iron-nickel alloy, iron-nickel-cobalt alloy, etc. A plurality of magnetic parts 320 are installed on the magnetic conductive plate 400. For example, the magnetic parts 320 are installed on the magnetic conductive plate 400 by bonding, clamping, etc. In this way, the fixed position stability between the magnetic parts 320 and the magnetic conductive plate 400 is relatively high.

[0171] In some embodiments, in order to enrich the sound effects of the display device 10, the display device 10 may also be provided with a speaker (not shown). The speaker may include a tweeter, a woofer and a mid-range speaker. The number and arrangement positions of the tweeters, woofers and mid-range speakers may be reasonably set according to actual needs. In this way, by matching the vibration sound of the central area of the display panel 100 with the speaker (including the tweeter, the woofer and the mid-range speaker), the sound effect of the display device 10 can be improved, thereby improving the user experience.

[0172] In some embodiments, the display device 10 further includes a back plate 500, which is disposed behind the light board 220 and configured to support the backlight module 200 and the display panel 100. The back plate 500 can be made of aluminum alloy, steel, etc. to provide effective support.

[0173] In some embodiments, the light board 220 and the backboard 500 are spaced apart to prevent collision between the light board 220 and the backboard 500. A plurality of buffers 610 may be spaced apart between the light board 220 and the backboard 500. The buffers 610 may be foam tapes to cushion the vibration of the light board 220.

[0174] In some embodiments, the magnetic conductive plate 400 is fixedly connected to the back plate 500. For example, the magnetic conductive plate 400 is connected to the front wall of the back plate 500 through threaded fasteners. In this way, the magnetic component 320 is installed on the back plate 500 through the magnetic conductive plate 400, which can prevent the magnetic component 320 from being offset during the vibration of the display panel 100.

[0175] In some embodiments, the back plate 500 may be provided with a through-mounting hole, and the magnetic conductive plate 400 may be fixed in the mounting hole. That is, the magnetic conductive plate 400 may constitute part of the appearance of the display device 10, and the magnetic conductive plate 400 may be exposed outside the display device 10 through the mounting hole. This may help reduce the thickness of the display device 10.

[0176] In some embodiments, the present invention provides a display device 10, which includes a display panel 100, wherein the display panel 100 is configured to display image information such as text and images.

[0177] In some embodiments, the display device 10 includes a backlight module 200;

[0178] In some embodiments, the display device 10 includes an actuation unit 300 .

[0179] In some embodiments, the display device 10 includes a light board 220;

[0180] In some embodiments, the light board 220 includes a light board body 221;

[0181] In some embodiments, the light board 220 includes a backlight source 222, which is configured to emit light toward the display panel 100. The excitation unit 300 is configured to drive the display panel 100 to vibrate and generate sound.

[0182] In some embodiments, the display 906 includes a display panel 100 and a backlight module 200;

[0183] In some embodiments, the backlight module 200 includes a light board 220 configured to provide backlight for the display panel 100. The backlight module 200 includes an optical film assembly 210, which is located between the display panel 100 and the light board 220. The display panel 100 and the light board 220 are spaced apart and form a gas layer M. The backlight module 200 also includes a support member 230, which is elastically pressed between the light board 220 and the optical film assembly 210. Thus, by providing the support member 230, the display panel 100, the backlight module 200, and the light board 220 can be approximately equivalent to a single-layer screen.

[0184] In some embodiments, the excitation unit 300 includes a vibration coil 310. The structure, function, and beneficial effects of the vibration coil 310 have been described in the above embodiments and will not be repeated in this embodiment. The excitation unit 300 also includes a magnetic component. The vibration coil 310 and the magnetic component are configured to generate vibrations and drive the light board 220 to vibrate, thereby transmitting the vibrations of the light board 220 to the display panel 100. This single-layer screen can effectively transmit the vibrations of the light board 220 to the display panel 100, with high vibration transmission efficiency, and the display device 10 has a good sound effect.

[0185] 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.

[0186] For ease of explanation, the above description has been made with reference to specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments are selected and described to better explain the principles and practical applications, so that those skilled in the art can better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that: include: Display panel; A backlight module, comprising: Optical film set; Light board; and a support member, wherein the optical film group is located between the display panel and the light board; An excitation unit, the excitation unit comprising: Vibrating coil; and a magnetic component, wherein the vibration coil is attached to a side wall of the light board facing away from the optical film group, the magnetic component is located on a side of the light board facing away from the optical film group, the magnetic component is configured to generate a first magnetic field, and the vibration coil is configured to generate an alternating second magnetic field when energized, so that the second magnetic field interacts with the first magnetic field and drives the light board to vibrate; The display panel and the lamp board are spaced apart to form a gas layer, and the support member is elastically pressed between the lamp board and the optical film group to transmit the vibration of the lamp board to the display panel.

2. The display device according to claim 1, wherein A first conductive circuit is attached to the side wall surface of the light board facing the optical film group, and a second conductive circuit is attached to the side wall surface of the light board away from the optical film group, wherein at least part of the second conductive circuit constitutes the vibration coil.

3. The display device according to claim 1 or 2, characterized in that There are multiple light boards, which are arranged in an array, and each light board is correspondingly provided with one or more vibration coils.

4. The display device according to claim 3, wherein The number of the magnetic components is less than or equal to the number of the vibration coils.

5. The display device according to claim 1 or 2, characterized in that: The vibration coil includes a meandering vibration part; the magnetic assembly includes a plurality of magnetic parts arranged in parallel, any two adjacent magnetic parts have opposite polarities, and the projections of any two adjacent magnetic parts on the lamp board are configured to be separated by different parts of the vibration part.

6. The display device according to claim 5, wherein: The vibrating portion includes a straight line segment and a connecting segment. There are multiple straight line segments, and the multiple straight line segments are parallel to each other. Any two adjacent straight line segments are connected in series through the connecting segment. The magnetic member is correspondingly provided between any two adjacent straight line segments, and the extension direction of the magnetic member is parallel to the straight line segment.

7. The display device according to claim 6, wherein: The input end and the output end of the vibration coil are both located outside the end portion of the magnetic member projected onto the lamp panel.

8. The display device according to claim 5, wherein There are multiple vibration parts, and the extension directions of the multiple vibration parts are the same; The vibration coil further includes a series connection portion, and any two adjacent vibration portions are connected in series via the series connection portion, so that the current directions in different vibration portions are the same.

9. The display device according to claim 5, wherein: The magnetic assembly further comprises a magnetic conductive plate, and the plurality of magnetic members are mounted on the magnetic conductive plate; The display device further includes a back plate, and the magnetic conductive plate is fixedly connected to the back plate.

10. A display device, characterized in that: include: Display panel; A backlight module, comprising an optical film group, a light board and a support member, wherein the optical film group is located between the display panel and the light board; an excitation unit, the excitation unit comprising a vibration coil and a magnetic component, the vibration coil and the magnetic component being configured to generate vibration and drive the light panel to vibrate; The display panel and the lamp board are spaced apart to form a gas layer, and the support member is elastically pressed between the lamp board and the optical film group to transmit the vibration of the lamp board to the display panel.

Images