Display device

Abstract

The utility model provides a display device. The display device comprises a display panel; the backlight module comprises an optical film set, a lamp panel and a plurality of supporting pieces, 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, away from the optical film set, of the lamp panel, the magnetic assembly is located on the side, away 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, 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, and the projection of the excitation unit on the lamp panel at least covers the projection of part of the supporting piece on the lamp panel. The display device provided by the utility model is good in sound production effect.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to display technology. In particular, embodiments of the present application relate to a display device. BACKGROUND

[0002] With the development of display technology, liquid crystal display (LCD) devices are increasingly applied 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. A gas layer is formed between the display panel and the backlight module to accommodate the backlight source. The display device further includes an exciter configured to vibrate the backlight module. The vibration of the backlight module can drive the display panel to vibrate and emit sound through the gas layer.

[0004] However, the vibration transmission efficiency of the gas layer is low, and the sound emission effect of the display device is poor. UTILITY MODEL CONTENT

[0005] Embodiments of the present application provide a display device with good sound emission effect.

[0006] In a first aspect, embodiments of the present application provide a display device, which includes:

[0007] a display panel;

[0008] a backlight module, the backlight module including:

[0009] an optical film group;

[0010] a lamp plate;

[0011] a plurality of support members, the optical film group being located between the display panel and the lamp plate;

[0012] an excitation unit, the excitation unit including:

[0013] a vibration coil;

[0014] a magnetic assembly, the vibration coil being attached to a side wall surface of the lamp plate facing away from the optical film group, the magnetic assembly being located on a side of the lamp plate facing away from the optical film group, the magnetic assembly being configured to generate a first magnetic field, the vibration coil being configured to generate an alternating second magnetic field after being energized, so that the second magnetic field and the first magnetic field interact with each other and drive the lamp plate to vibrate;

[0015] The display panel is arranged spaced apart from the lamp panel and forms a gas layer, a plurality of the support members are arranged spaced apart and elastically abut against the lamp panel and the optical film group to transmit the vibration of the lamp panel to the display panel, wherein the projection of the excitation unit on the lamp panel covers at least part of the projection of the support member on the lamp panel.

[0016] In this way, on the one hand, the vibration transmission efficiency between the lamp panel and the display panel can be improved by the support member, and the sound production effect of the display device is better. On the other hand, the vibration coil is attached to the lamp panel in a planar structure, the laying area of the vibration coil is larger, the stress of the lamp panel and the display panel is more uniform, that is, the pressure is smaller, and a larger vibration force can be borne, so that the display device has a better sound production effect.

[0017] In some embodiments of the present application, a first conductive circuit is attached to the side wall surface of the lamp panel facing the optical film group, and a second conductive circuit is attached to the side wall surface of the lamp panel 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, the number of lamp panels is a plurality, and a plurality of lamp panels are arranged in an array, and one or more vibration coils are arranged corresponding to each lamp panel.

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

[0020] In some embodiments of the present application, the vibration coil comprises a winding vibration part; the magnetic component comprises a plurality of magnetic members arranged side by side, any two adjacent magnetic members have opposite polarities, and the projection of any two adjacent magnetic members on the lamp panel is configured to be spaced apart by different parts of the vibration part.

[0021] In some embodiments of the present application, the vibration part comprises a straight line segment and a connecting segment, the straight line segment is a plurality, and a plurality of the straight line segments are parallel to each other, any two adjacent straight line segments are connected in series through the connecting segment, and the magnetic member is arranged corresponding to any two adjacent straight line segments, and the extension direction of the magnetic member 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 located outside the end portion of the projection of the magnetic member on the lamp panel.

[0023] In some embodiments of the present application, the vibration part is a plurality, and the extension directions of a plurality of vibration parts are the same; the vibration coil further comprises a series connection part, any two adjacent vibration parts are connected in series through the series connection 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 comprises a magnetic conducting plate, and the plurality of magnetic pieces are mounted on the magnetic conducting plate; and the display device further comprises a back plate, and the magnetic conducting plate is fixedly connected with the back plate.

[0025] In a second aspect, embodiments of the present application provide a display device, comprising:

[0026] a display panel;

[0027] a backlight module, the backlight module comprising an optical film set, a lamp plate and a support, the optical film set being located between the display panel and the lamp plate;

[0028] an excitation unit, the excitation unit comprising a vibration coil and a magnetic assembly, the vibration coil and the magnetic assembly being configured to generate vibration and drive the lamp plate to vibrate;

[0029] the display panel is arranged in a spaced manner with the lamp plate to form a gas layer, and the support is elastically pressed between the lamp plate and the optical film set to transmit the vibration of the lamp plate to the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the drawings needed to be used in the embodiment or related art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to 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 configuration block diagram of a display device according to some embodiments of the present application;

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

[0034] Figure 4 A structural schematic diagram of a lamp plate according to some embodiments of the present application;

[0035] Figure 5 A structural schematic diagram of an excitation unit according to some embodiments of the present application;

[0036] Figure 6 A structural schematic diagram of a vibration coil according to some embodiments of the present application;

[0037] Figure 7 A structural schematic diagram of a magnetic assembly according to some embodiments of the present application;

[0038] Figure 8 Structure diagram of a lamp plate and an excitation unit for some embodiments of the present application;

[0039] Figure 9 Another structure diagram of a lamp plate and an excitation unit for some embodiments of the present application;

[0040] Figure 10 Another structure diagram of a lamp plate and an excitation unit for some embodiments of the present application.

[0041] Explanation of reference signs:

[0042] 10 - display device;

[0043] 100 - display panel;

[0044] 200 - backlight module;

[0045] 210 - optical film set;

[0046] 220 - lamp plate; 221 - lamp plate body; 222 - backlight source; 223 - first conductive line;

[0047] 230 - support;

[0048] 300 - excitation unit;

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

[0050] 320 - magnetic part;

[0051] 400 - magnetic conductive plate;

[0052] 500 - back plate;

[0053] 610 - buffer part; 620 - sealing part;

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

[0055] 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;

[0056] M - gas layer. DETAILED DESCRIPTION

[0057] In order to make the purposes, implementations and advantages of the present application clearer, the following will be a clear and complete description of the exemplary embodiments of the present application in conjunction with the accompanying drawings of the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only a part of the embodiments of the present application, but not all the embodiments.

[0058] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the subsequently described embodiments, and is not intended to limit the embodiments of the present application. Unless otherwise specified, these terms should be understood according to their ordinary and general meanings.

[0059] In addition, the terms "comprise" and "have" and any variations thereof are intended to cover but not exclusive inclusion, for example, a product or device comprising a series of components does not have to be limited to the clearly listed components, but can include other components that are not clearly listed or inherent to these products or devices.

[0060] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0061] The terms "first", "second" are only configured for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0062] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0063] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts are within the scope of the present application.

[0064] In the related art, in order to optimize the sound production effect of the liquid crystal display device, an exciter is usually arranged on the lamp plate of the liquid crystal display device. The exciter can drive the lamp plate to vibrate, and the vibration of the lamp plate can be transmitted to the display panel through the gas layer between the display panel and the lamp plate, so as to drive the display panel to vibrate and produce sound. The acoustic effect is good, and it is easy to realize the unity of sound and picture, and the user's audio-visual effect is good. However, due to the poor vibration transmission efficiency of the gas layer, the vibration of the exciter cannot be effectively transmitted to the display panel, and the sound production effect of the display device is poor.

[0065] Therefore, the display device provided in the embodiments of the present application includes a vibration coil and a magnetic assembly. On the one hand, the vibration coil has a planar structure and is attached to the lamp plate. In this way, the vibration coil has a large laying area to disperse the stress of the lamp plate, that is, the pressure at the position of the lamp plate where the vibration coil is arranged is small, and the lamp plate and the display panel are uniformly stressed, so that the lamp plate and the display panel can withstand a large vibration force, so that the display device has a good sound production effect. On the other hand, a support is arranged between the gas layer between the display panel and the lamp plate, 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 plate and the display panel, so that the display device has a good sound production effect.

[0066] The display device provided in the embodiments of the present application can have various implementation forms, for example, it can be a television, a smart television, a monitor, an electronic bulletin board, an electronic table, etc. Figure 1 An embodiment of the display device of the present application.

[0067] 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. As shown in Figure 1As shown, a 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 be connected in communication through a local area network (LAN), a wireless local area network (WLAN), and other networks. The server 30 can provide various contents and interactions to the display device 10. The server 30 can be one cluster or multiple clusters, and can include one or more types of servers.

[0068] Figure 2 A configuration block diagram of a display device for some embodiments of the present application. As shown, the display device 10 includes a tuner demodulator 901, which receives broadcast television signals through wired or wireless receiving modes, and demodulates audio and video signals, such as and EPG data signals, from a plurality of wireless or wired broadcast television signals. Figure 2

[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, a RAM, a ROM, a first interface to an n-th interface configured to 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 to drive the image display, configured to receive image signals originating from the controller output, and components configured to display video content, image content, and menu control interfaces, and user control UI interfaces.

[0074] 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.

[0075] In some embodiments, the display device 10 includes 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 include at least one of a Wifi module, a Bluetooth module, a wired Ethernet module, other network communication protocol chips, or near field communication protocol chips, 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 through the communicator 902.​

[0076] In some embodiments, the display device 10 includes at least one of a user interface 910, which can be configured to receive control signals of the control device 900 (e.g., an infrared remote controller, etc.).

[0077] In some embodiments, the display device 10 includes a detector 903, which is configured to collect signals of the external environment or the external interaction. For example, the detector 903 includes a light receiver, which is configured to collect the intensity of ambient light; or the detector 903 includes an image collector, such as a camera, which can be configured to collect the scene of the external environment, the attribute of the user, or the interaction gesture of the user; or the detector 903 includes a sound collector, such as a microphone, which is configured to receive external sound.

[0078] In some embodiments, the display device 10 includes an external device interface 904, which can 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. The input / output interface can also be a composite interface formed by the above-mentioned interfaces.

[0079] 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 located in an external device of the main device where the controller 905 is located, such as an external set-top box, etc.

[0080] 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.

[0081] 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.

[0082] The user can 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 can input a user command through input of a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through a sensor.

[0083] A "user interface" is a medium interface for interaction and information exchange between an application program or an operating system and a user, which realizes conversion between an internal form of information and a form acceptable by the user. A commonly used form of the user interface is a graphical user interface (GUI), which refers to a user interface related to computer operation displayed in a graphical manner. The graphical user interface can be an interface element such as an icon, a window, a control, and the like displayed in a display screen of an electronic device, and the control can include a visible interface element such as an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a widget, and the like.

[0084] Figure 3 A structural schematic diagram of a display device of some embodiments of the present application. Figure 4 A structural schematic diagram of a lamp plate of some embodiments of the present application. Figure 5 A structural schematic diagram of an excitation unit of some embodiments of the present application. Figure 6 A structural schematic diagram of a vibration coil of some embodiments of the present application. Figure 7 A structural schematic diagram of a magnetic assembly of some embodiments of the present application. Figure 8 A structural schematic diagram of a lamp plate and an excitation unit of some embodiments of the present application. Figure 9 A structural schematic diagram of a lamp plate and an excitation unit of some embodiments of the present application. Figure 10 A structural schematic diagram of a lamp plate and an excitation unit of some embodiments of the present application.

[0085] Please refer to Figures 3 to 10 In some embodiments, the present embodiment provides a display device 10, which is a liquid crystal display device. The display device 10 includes a display panel 100 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, 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 a user when the user faces the display panel 100. Correspondingly, the side of the display device 10 facing the user is the front side, the side of the display device 10 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 including a color filter (CF) substrate, a thin film transistor (TFT) substrate (also referred to as an array substrate), and a liquid crystal (LC) layer between the color filter substrate and the array substrate. The thin film transistor substrate is provided with a data line and a scan line, and the liquid crystal molecules change direction by whether the data line and the scan line are powered on or not, so as to make the light of the backlight 222 pass through the color filter substrate and generate a picture of a preset color.

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

[0089] In some embodiments, the backlight module 200 includes an optical film group 210, which is arranged on the side of the display panel 100 away from the display surface.

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

[0091] In some embodiments, the lamp plate 220 has a light source for providing backlight for the display panel 100, and the type of the lamp plate 220 is different according to the type of the light source.

[0092] In some embodiments, the lamp plate 220 can be a surface light source, such as a planar fluorescent plate.

[0093] In some embodiments, the lamp plate 220 includes a plurality of point light sources, and the lamp plate 220 includes a lamp plate body 221, which can be an aluminum plate, a printed circuit board (PCB), etc.

[0094] In some embodiments, the lamp panel 220 further comprises a backlight source 222, which can be multiple and arranged at intervals on the lamp panel 220. The backlight source 222 can be a light-emitting diode (LED), a mini light-emitting diode (Mini LED), or a micro light-emitting diode (Micro LED). The outer side of the backlight source 222 can be covered with a transparent packaging piece to form a protection for the backlight source 222.

[0095] In some embodiments, for the backlight source 222, the backlight source 222 is located on the side wall surface of the lamp panel body 221 facing the optical film group 210. According to different types of light emitted by the backlight source 222, the optical film group 210 can be of different types. For example, when the backlight source 222 emits white light, the optical film group 210 can include a reflective sheet, a light guide plate, a brightness enhancement film, and the like stacked with each other. Among them, the reflective sheet is attached to the side of the lamp panel 220 where the backlight source 222 is arranged.

[0096] When the backlight source 222 emits blue light, the optical film group 210 can include a plurality of stacked films.

[0097] In some embodiments, the optical film group 210 can include a diffusion film arranged on the side facing the lamp panel 220. The user mixes the light of the plurality of backlight sources 222 uniformly, that is, converts the point light source into the area light source.

[0098] In some embodiments, the optical film group 210 can 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 can not be limited, and the backlight source 222 can emit blue light or purple light.

[0099] In some embodiments, the optical film group 210 can include a brightness enhancement film configured to improve the brightness of the light. It can be understood that when the backlight source 222 emits white light, the optical film group 210 can also include a diffusion film, a fluorescent film, and a brightness enhancement film. The present embodiment is described by taking the optical film group 210 including the diffusion film, the fluorescent film, and the brightness enhancement film as an example.

[0100] In some embodiments, the edge of the display panel 100 is connected with the edge of the lamp panel 220, so that the display panel 100 and the lamp panel 220 are arranged at intervals and form a gas layer M.

[0101] In some embodiments, the display panel 100 and the optical film group 210 can be fixedly connected as a whole by bonding, and there is no gas gap 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. At this time, the lamp panel 220 is arranged in the gas layer M and the backlight 222 is arranged in the gas layer M. The gas layer M can be equivalent to a damping spring and is configured to transmit vibration.

[0102] In some embodiments, the gas layer M can be closed, that is, the gas layer M and the external control do not flow to each other. Correspondingly, the edges of the display panel 100 and the edges of the lamp panel 220 can be provided with sealing members 620. For example, the display panel 100 and the middle frame of the display device 10 are provided with sealing members 620, and the lamp panel 220 and the back plate 500 of the display device 10 are provided with sealing members 620.

[0103] In some embodiments, the gas layer M can also be in an incomplete sealing state. For example, in some embodiments, the edges of the display panel 100 and the edges of the lamp panel 220 are sealingly connected, thereby forming a closed gas layer M. In other embodiments, the display panel 100 and the lamp panel 220 are not sealed, so that the gas layer M can be in communication with the outside air through the assembly gap between the components and other structures. In yet other embodiments, a specific communication channel can be arranged in the side gap between the display panel 100 and the lamp panel 220, so that the gas layer M is in communication 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 to make the display panel 100 normally vibrate and sound, the sealing state of the gas layer M is not limited here.

[0104] In some embodiments, the gap size of the gas layer M can be determined according to the light source of the lamp panel 220, for example, the gap size is related to the size of the light source. The light source such as the sub-millimeter light emitting diode (Mini LED) has a relatively compact size, so the gas layer M will have a smaller gap, thereby reducing the gap size of the gas layer M and improving the vibration transmission efficiency of the gas layer M. Therefore, in this embodiment, the light source of the backlight module is 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 at most 10mm, or the gap of the gas layer M can also be 0.3mm or 1mm, etc., to adapt to the size of different kinds 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, 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.

[0106] In some embodiments, the gap of the gas layer M can be 1mm, so that the gap of the gas layer M is relatively small, the vibration transmission efficiency can be improved, and the display device 10 can have a smaller thickness; or when the gap of the gas layer M is 0.3mm, the distance between the excitation unit 300 and the display panel 100 is closer, the vibration is more intense, and the sound production effect of the display device 10 is better. When the gas layer M is 10mm, the gap of the gas layer M is relatively large, and mutual collision between the display panel 100 and the light source at a certain position during vibration can be avoided.

[0107] In some embodiments, the display device 10 includes an excitation unit 300 configured to drive the display panel 100 to vibrate and produce sound. The excitation unit 300 includes a vibration coil 310 attached to the side wall of the lamp panel 220 facing away from the optical film group 210, that is, the vibration coil 310 has a planar structure, the vibration coil 310 has a smaller size in the vertical direction of the display panel 100, and the vibration coil 310 has a larger area on the lamp panel 220.

[0108] In some embodiments, the excitation unit 300 further comprises a magnetic assembly located on the side of the lamp plate 220 away from the optical film set 210, i.e., the magnetic assembly is located on the back side of the vibration coil 310, and the magnetic assembly is configured to generate a first magnetic field, which is a static magnetic field with unchanging strength and direction. The vibration coil 310 is located in the first magnetic field, and the vibration coil 310 is configured to generate an alternating second magnetic field after being powered on, i.e., the direction, strength, etc. of the second magnetic field can change according to the size, direction, etc. of the current flowing in 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 move the vibration coil 310 and the lamp plate 220 towards or away from the magnetic assembly.

[0109] In this way, since the vibration coil 310 has a large laying area, the stress on the lamp plate 220 and the display panel 100 is more uniform, i.e., the lamp plate 220 and the display panel 100 are subjected to a smaller pressure, and the lamp plate 220 and the display panel 100 can withstand a larger vibration force, so that the display device 10 has a better sound production effect.

[0110] In some embodiments, the backlight module 200 further comprises a support 230 elastically pressed between the lamp plate 220 and the optical film set 210 to transmit the vibration of the lamp plate 220 to the display panel 100.

[0111] In related technologies, compared with a display device with an OLED (Organic Light-Emitting Diode) light source as the light source, since the OLED display screen is a self-luminous screen and the OLED display screen itself has a certain flexibility, an exciter can be arranged on the back of the OLED display screen, so that the OLED display screen elastically deforms and produces sound under the excitation vibration of the exciter. However, in a liquid crystal display device, the liquid crystal display device has a backlight module 200, and it is not possible to directly arrange an exciter on the back of the display panel, and the lamp plate in the backlight module 200 has a large hardness, so it is difficult to couple and transmit the vibration of the lamp plate to the display panel, and the transmission efficiency of the vibration force is low. Therefore, the support 230 can be arranged between the display panel and the lamp plate of a Mini-LED display device or other liquid crystal display device, and the support 230 can be used as a transmission medium for vibration to transmit the vibration of the lamp plate to the display panel, thereby improving the vibration transmission efficiency from the lamp plate to the display panel. In addition, the support 230 can maintain the gap of the gas layer M between the lamp plate and the display panel within a predetermined range, so as to avoid the light source and the display panel from colliding and causing collision noise and abrasion at a certain position.

[0112] In some embodiments, the support 230 is a resilient member, for example, the support 230 is a rubber member, a silica gel member or a foam member, and the support 230 has good elasticity and can be elastically deformed under an external force to change the size of the support 230 in the thickness direction of the display device. In this way, the display panel 100 and the backlight module 200 can be elastically supported by the support 230, and even if the display panel 100 is subjected to an external force, for example, an impact collision of an external object, the support 230 can alleviate the impact on the display panel 100 or the backlight module 200 by elastically deforming itself, and reduce the deformation amount of the display panel 100 or the backlight module 200, so as to avoid the display panel 100 or the backlight module 200 from generating a large deformation, and the structural stability and safety of the display device 10 are higher.

[0113] In some embodiments, by arranging the support 230 between the lamp plate 220 and the optical film group 210, the support 230 can continuously support the lamp plate 220 and the optical film group 210 during the reciprocating vibration of the lamp plate 220, that is, one end of the support 230 is connected to the lamp plate 220, and the other end is connected to the optical film group 210, and the connection between the support 230 and the lamp plate 220 and the connection between the support 230 and the optical film group 210 will not be disconnected when the lamp plate 220 and the optical film group 210 approach or move away from each other. In this way, the optical film group 210 and the lamp plate 220 can be connected as a whole by the support 230, that is, the display panel 100, the optical film group 210 and the lamp plate 220 can be equivalent to a single-layer screen, so that the vibration of the lamp plate 220 can be transmitted to the display panel 100 through the gas layer M and the support 230, the vibration transmission efficiency is higher, and the sound production effect of the display device 10 is better.

[0114] In some embodiments, when the gap of the gas layer M is large, for example, the gap is 4-10 mm, the gas pressure change sensitivity in the gas layer M is low when the lamp plate 220 vibrates, and by arranging the support 230 between the lamp plate 220 and the optical film group 210, the gas volume between the lamp plate 220 and the optical film group 210 can be reduced, and the vibration transmission efficiency of the excitation unit 300 and the gas pressure change sensitivity can be improved.

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

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

[0117] In some embodiments, the support 230 further comprises a buffer part connected to the support part, the buffer part is a piece of elastic material, for example, the buffer part is a rubber piece, a silica gel piece or a piece of foam, the buffer part has good elasticity and good buffering performance.

[0118] In this way, the influence of temperature rise on the support 230 can be reduced, the support 230 can be effectively supported between the optical film group 210 and the lamp plate 220, and the shrinkage of the support 230 caused by temperature rise can be avoided, and the concave deformation of the optical film group 210 or the contact between the optical film group 210 and the backlight 222 can also be avoided, so that the structural stability of the display device 10 is higher.

[0119] In some embodiments, since the optical film group 210 can convert and homogenize the light emitted by the backlight 222, even if the support 230 is arranged on the side of the lamp plate 220 where the backlight 222 is arranged, the shadow on the display panel 100 can also be avoided, so that the display panel 100 has a more uniform brightness. Therefore, from the aspect of display brightness of the display panel 100, the shape, size and contact area of the support 230 with the diffusion film can not be limited.

[0120] In some embodiments, considering that the size of the display device 10 is large, the number of supports 230 can be multiple (see Figures 8 to 10 The multiple supports 230 are arranged at intervals, so that the diffusion film at different positions can be supported by the support 230, and the gap between the lamp plate 220 and the optical film group 210 at different positions can be maintained within a predetermined range.

[0121] Considering the vibration transmission loss, the closer to the excitation unit 300, the greater the vibration amplitude of the lamp plate 220, and the farther away from the excitation unit 300, the vibration amplitude of the lamp plate 220 gradually decreases. In some embodiments, the height of the support 230 along the vertical direction of the display panel 100 gradually decreases from the side close to the excitation unit 300 to the side away from the excitation unit 300 in the natural state, and the height of the support 230 along the vertical direction of the display panel 100 in the natural state is greater than the maximum distance of the gas layer M at the corresponding position.

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

[0123] Therefore, due to the unequal height of the support 230, for example, the basic height of the support 230 can be the height of the support 230 close to the excitation unit 300, and the farther away from the excitation unit 300, the smaller the height of the support 230.

[0124] That is, by setting the heights of the support members 230 in the natural state to be unequal, each of the support members 230 between the optical membrane group and the lamp panel 220 can be in a compression state of interference fit at a lower manufacturing cost, that is, separation of the support members 230 near the position of the excitation unit 300 from the optical membrane group or the lamp panel 220 is avoided, the support effect between the optical membrane group and the lamp panel 220 is better, and the vibration transmission efficiency is higher.

[0125] Considering the vibration transmission loss, the closer to the position of the excitation unit 300, the greater the vibration intensity, and the farther away from the position of the excitation unit 300, the vibration intensity gradually decreases. 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 close to the excitation unit 300 to the side away from the excitation unit 300. That is, the closer to the position of the excitation unit 300, the greater the support strength required by the optical membrane group 210, and the farther away from the position of the excitation unit 300, the smaller the support strength required by the optical membrane group 210. Accordingly, at least one of the distribution density and the 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 lamp panel 220 at least covers the projection of the part of the support members 230 on the lamp panel 220. That is, at least part of the support members 230 is arranged opposite to the excitation unit 300, so that the support members 230 can effectively support at the position of the lamp panel 220 opposite to the excitation unit 300.

[0127] When the distribution areas of the support members 230 at different positions are unequal, the closer to the position of the excitation unit 300, the more the number of the support members 230 arranged, and the farther away from the position of the excitation unit 300, the less the number of the support members 230 arranged. That is, the closer to the position of the excitation unit 300, the more support members 230 participate in supporting the optical membrane group 210 and transmitting vibration, and the support effect is better; and a large number of support members 230 collectively support and transmit vibration, so that the pressure borne by a single support member 230 is smaller, and the service life of the support member 230 is longer; at the same time, even if part of the support members 230 near the position of the excitation unit 300 fail to support, since the number of the support members 230 near the position of the excitation unit 300 is large, it will not cause the support failure and the vibration transmission failure at the position of the excitation unit 300.

[0128] When the support stiffness of different support members 230 is not equal, the support stiffness of the support member 230 closer to the excitation unit 300 is greater, and the support stiffness of the support member 230 farther away from the excitation unit 300 is smaller. That is, the closer to the excitation unit 300, the stronger the ability of the support member 230 to resist deformation, which can avoid the elastic failure of the support member 230 due to excessive stretching and contraction, thereby causing the support failure of the support member 230 and the vibration transmission failure.

[0129] It can be understood that the distribution area and the support stiffness of the support member 230 can be set to be unequal, and the present embodiment is not limited.

[0130] Considering the 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 vibration intensity gradually decreases. 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 close to the excitation unit 300 to the side away from the excitation unit 300. That is, the closer to the excitation unit 300, the greater the support strength required by the optical film group 210, and the farther away from the excitation unit 300, the smaller the support strength required by the optical film group 210. Correspondingly, at least one of the hardness and the cross-sectional area of the support member 230 can also be set to be unequal.

[0131] When the hardness of different support members 230 is set to be unequal, the hardness of the support member 230 closer to the excitation unit 300 is greater, and the hardness of the support member 230 farther away from the excitation unit 300 is smaller. That is, the closer to the excitation unit 300, the stronger the ability of the support member 230 to resist deformation, so that the support member 230 can effectively support between the lamp panel 220 and the diffusion film 232, and the support member 230 has better support effect and vibration transmission effect.

[0132] When the cross-sectional area of different support members 230 is set to be unequal, the cross-sectional area of the support member 230 closer to the excitation unit 300 is greater, and the cross-sectional area of the support member 230 farther away from the excitation unit 300 is smaller. That is, the closer to the excitation unit 300, the greater the cross-sectional size of the support member 230, which is less likely to stretch and deform, so that the support member 230 can effectively support between the lamp panel 220 and the optical film group, and the support member 230 has better support effect and vibration transmission effect.

[0133] It can be understood that the hardness and the cross-sectional area of the support member 230 can be set to be unequal, and the present embodiment is not limited.

[0134] In some embodiments, at least one of the height of the support 230 along the vertical direction of the display panel 100 in the natural state, the distribution density of the support 230, the rigidity of the individual support 230, the hardness of the individual support 230, and the cross-sectional area of the individual support 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, manufacturing costs, and the like.

[0135] In some embodiments, referring to Figure 4 The lamp panel 220 is attached with a first conductive circuit 223 on the side wall surface facing the optical film set 210. The first conductive circuit 223 is configured to be electrically connected with the backlight 222. After the first conductive circuit 223 is powered on, the backlight 222 can be powered on and emit light to provide backlight for the display panel 100.

[0136] In some embodiments, the second conductive circuit is attached on the side wall surface of the lamp panel 220 away from the optical film set 210, that is, the second conductive circuit is located on the rear side wall surface of the lamp panel 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 powered on or not will not affect the first conductive circuit 223 providing backlight for the display panel 100.

[0138] In some embodiments, the first conductive circuit 223 and the second conductive circuit can constitute part of the lamp panel 220. For example, the lamp panel 220 is a double-sided copper-clad printed circuit board provided with the backlight 222. The first conductive circuit 223 and the second conductive circuit are both copper foil circuits printed on the lamp panel body 221. The lamp panel 220 is easy to form and has a low manufacturing cost.

[0139] In some embodiments, at least part of the second conductive circuit constitutes the vibration coil 310, that is, the vibration coil 310 can constitute part of the structure of the lamp panel 220 and be formed together, thereby having a low manufacturing cost.

[0140] Considering that the size of the display device 10 is usually large, a large-size lamp panel 220 is not easy to form. In some embodiments, the number of the lamp panels 220 can be multiple, and the multiple lamp panels 220 are arranged in an array to be spliced. For example, the multiple lamp panels 220 are arranged in a vertical and horizontal array.

[0141] In some embodiments, when the number of the lamp panels 220 is multiple, the support 230 can be arranged on the lamp panel 220 or between any two adjacent lamp panels 220, or the support 230 is arranged on the lamp panel 220 and between any two adjacent lamp panels 220.

[0142] In some embodiments, one or more vibration coils 310 are arranged on each lamp plate 220. The number of vibration coils 310 arranged on each lamp plate 220 can be set as needed, and the present embodiments are not limited thereto.

[0143] In some embodiments, the number of vibration coils 310 arranged on each lamp plate 220 is the same, for example, one vibration coil 310 is arranged on each lamp plate 220. In this way, the lamp plate 220 can be assembled as a standard part to reduce the difficulty of production and assembly.

[0144] In some embodiments, the number of magnetic assemblies is less than (as shown in Figure 10 ) or equal to (as shown in Figure 8 and Figure 9 ) the number of vibration coils 310. In this way, the magnetic assemblies 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 lamp plates 220 is two (as shown in Figure 8 ), the two lamp plates 220 are arranged in the transverse direction, and one magnetic assembly is arranged in the middle of each of the two lamp plates 220. In this way, the display device 10 can realize left and right sound channels.

[0146] In some embodiments, the number of lamp plates 220 is three (as shown in Figure 9 ), the three lamp plates 220 are arranged in the transverse direction, and one magnetic assembly is arranged in the middle of each of the two lamp plates 220 located on the left and right sides of the display device. In this way, the display device 10 can realize left and right sound channels.

[0147] In some embodiments, the number of lamp plates 220 is multiple (as shown in Figure 10 ), the multiple lamp plates 220 are arranged in the longitudinal and transverse directions, and magnetic assemblies can be arranged on the left side, the right side, and the top of the display device 10 to realize multi-channel sound of the display device 10.

[0148] In some embodiments, when the number of magnetic assemblies is multiple, a part or all of the corresponding vibration coils 310 can be selectively energized to drive a part or all of the excitation units 300 to vibrate and sound.

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

[0150] Please refer to Figure 5 and Figure 6In some embodiments, the vibration coil 310 comprises a meandering vibration portion 311, i.e., the vibration portion 311 is approximately in a wave shape structure. Compared with a 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, so as to widen the frequency bandwidth of the excitation unit 300.

[0151] In some embodiments, the vibration coil 310 can have different structures according to different meandering extension directions of the vibration portion 311. For example, the vibration portion 311 meanders in an arc shape.

[0152] In some embodiments, the magnetic assembly comprises a plurality of magnetic pieces 320 arranged side by side. The magnetic pieces 320 are permanent magnets, and the material of the magnetic pieces 320 can be ferrite magnetic pieces or the like known to those skilled in the art. Any two adjacent magnetic pieces 320 have opposite polarities to form a closed magnetic loop. For example, one of the N and S poles of the magnetic piece 320 faces the front side of the display device 10, and the other faces the back side of the display device 10.

[0153] In some embodiments, the plurality of magnetic pieces 320 are arranged at intervals, and the projections of any two adjacent magnetic pieces 320 on the lamp plate 220 are configured to be spaced apart by different portions of the vibration portion 311. That is, the meandering vibration portion 311 forms a recessed area, and the projection of the magnetic piece 320 on the lamp plate 220 is located in the recessed area. In this way, the portion of the vibration portion 311 between the two adjacent magnetic pieces 320 can be located in the first magnetic field, and after the vibration coil 310 is energized, the portion of the vibration portion 311 can serve as a vibration driving portion to drive the lamp plate 220 to vibrate, and the vibration driving effect is good.

[0154] In some embodiments, the vibration portion 311 can have different meandering structures, for example, the vibration portion 311 can be zigzag-shaped.

[0155] In some embodiments, the vibration portion 311 comprises a plurality of straight line segments 3111, each of which can extend in any direction to make the vibration portion 311 have different coiled structures. For example, the vibration portion 311 is approximately arranged in a trapezoidal shape.

[0156] In some embodiments, the plurality of straight line segments 3111 are parallel to each other, so that the structure of the vibration portion 311 is relatively simple and easy to form. Any two adjacent straight line segments 3111 are connected in series by a connecting segment 3112, and the current directions in any two adjacent straight line segments 3111 are opposite. In this way, the inductance of the straight line segment 3111 can be effectively reduced, and the vibration coil 310 can approximately form a pure resistance load, so as to avoid the condition that the display device 10 produces less sound at high frequencies, and the sound production effect of the display device 10 is good.

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

[0158] In some embodiments, the plurality of straight line segments 3111 are arranged at intervals, and any two adjacent straight line segments 3111 correspond to a magnetic member 320 arranged therebetween, that is, the two adjacent straight line segments 3111 and the connecting segment 3112 connecting the two straight line segments 3111 enclose a recessed region, and the projection of the magnetic member 320 on the lamp panel 220 is located in the recessed region.

[0159] In some embodiments, the magnetic member 320 can have different structures according to the recess depth of the recessed region, for example, the magnetic member 320 is a block-shaped member. Alternatively, the extension direction of the magnetic member 320 is parallel to the straight line segment 3111, and accordingly, the magnetic member 320 is a strip-shaped member. In this way, along the length direction of the straight line segment 3111, the forces received by the straight line segment 3111 at different positions are relatively uniform, that is, the force and vibration amplitude of the straight line segment 3111 are relatively uniform, the vibration of the display panel 100 is relatively uniform, and the sound production effect of the display device is better.

[0160] In some embodiments, when the vibration coil 310 is a plurality of vibration coils, the straight line segments 3111 in different vibration coils 310 can extend along any direction, for example, the extension directions of the straight line segments 3111 in two vibration coils 310 are perpendicular to each other. In some embodiments, the straight line segments 3111 in different vibration coils 310 can all extend along the same direction, so as to reduce the assembly difficulty of the magnetic assembly and the lamp panel 220.

[0161] In some embodiments, the projection of the magnetic member 320 on the lamp panel 220 can be located at the middle position of the two adjacent straight line segments 3111, so that the force received by each straight line segment 3111 is relatively uniform, avoiding the problem that the magnetic field intensity received by different straight line segments 3111 is different, and the vibration amplitude at different positions of different straight line segments 3111 is greatly different.

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

[0163] In some embodiments, the input end and the output end of the vibration coil 310 are both located outside the end of the magnetic piece 320 projected on the lamp plate 220. For example, the input end and the output end of the vibration coil 310 correspond to the connecting section 3112 of the vibration coil 310, so that the lead part of the vibration coil 310 connected to the control unit can avoid the magnetic piece 320, and the lead part of the vibration coil 310 connected to the control unit is not stacked with the magnetic piece 320 in the thickness direction, which helps to reduce the thickness of the display device 10.

[0164] In some embodiments, the vibration part 311 is multiple, 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, so that multiple straight sections 3111 are arranged side by side at any straight section 3111 position. The vibration coil 310 further includes a series part 312, and 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, thereby enhancing the strength of the second magnetic field at the straight section 3111 position, so that the display panel 100 has a larger vibration amplitude under the condition of a smaller current flowing in the vibration coil 310.

[0165] In some embodiments, the lamp plate body 221 can also be an internally hollow plate structure (not shown) to reduce the weight and density of the lamp plate body 221 and improve the damping of the lamp plate body 221. In this way, the bending modulus of the lamp plate 220 is higher, the number of modal resonance frequencies can be increased, the frequency response transmitted to the display panel 100 is improved, the frequency range of the sound emitted by the display panel 100 is expanded, and the obvious peak and valley and distortion of the audio response of the display panel 100 are avoided to affect the listening experience.

[0166] In some embodiments, the lamp plate body 221 can be a sandwich panel.

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

[0168] In some embodiments, the sandwich panel includes a skin, and the skin is attached to the opposite sides of the core material. The material of the skin can be aluminum paper, plastic, etc., as long as it can stably fix the first conductive circuit 223 and the second conductive circuit, and the material of the skin is not limited in the present embodiment.

[0169] As known by those skilled in the art, the sound quality of sound can be measured from the volume, frequency response range, tone, etc. Among them, the sound emitted by the sandwich panel has higher volume and wider audio response with smaller fluctuations compared to the sound emitted by the aluminum plate, that is, by hollowing the lamp plate body 221, the sound emitted by the display device can have better sound quality.

[0170] In some embodiments, the magnetic assembly further comprises a magnetic conducting plate 400, which can be made of iron, iron-nickel alloy, iron-nickel-cobalt alloy, etc. The plurality of magnetic pieces 320 are installed on the magnetic conducting plate 400. For example, the magnetic pieces 320 are installed on the magnetic conducting plate 400 by adhesion, clamping or the like. In this way, the fixing position stability between the magnetic pieces 320 and the magnetic conducting plate 400 is higher.

[0171] In some embodiments, in order to enrich the sound effect of the display device 10, the display device 10 can further be provided with a loudspeaker (not shown). The loudspeaker can include a high-pitched loudspeaker, a low-pitched loudspeaker and a medium-pitched loudspeaker. The number and arrangement position of each of the high-pitched loudspeaker, the low-pitched loudspeaker and the medium-pitched loudspeaker can be reasonably set according to actual needs. In this way, by matching the vibration sound generation in the middle area of the display panel 100 with the loudspeaker (including the high-pitched loudspeaker, the low-pitched loudspeaker and the medium-pitched loudspeaker), the sound generation effect of the display device 10 can be improved, thereby improving the user experience.

[0172] In some embodiments, the display device 10 further comprises a back plate 500, which is arranged at the back side of the lamp plate 220 and is configured to support the backlight module 200 and the display panel 100. The material of the back plate 500 can be aluminum alloy, steel or the like to provide effective support.

[0173] In some embodiments, the lamp plate 220 and the back plate 500 are arranged at intervals to avoid collision between the lamp plate 220 and the back plate 500. A plurality of buffer pieces 610 can be arranged at intervals between the lamp plate 220 and the back plate 500. The buffer piece 610 can be a foam tape to buffer the vibration of the lamp plate 220.

[0174] In some embodiments, the magnetic conducting plate 400 is fixedly connected to the back plate 500. For example, the magnetic conducting plate 400 is connected to the front wall surface of the back plate 500 through a threaded fastener. In this way, the magnetic pieces 320 are installed on the back plate 500 through the magnetic conducting plate 400, which can avoid the magnetic pieces 320 from being deviated during the vibration of the display panel 100.

[0175] In some embodiments, the back plate 500 can be provided with a through mounting hole, and the magnetic conducting plate 400 is fixed in the mounting hole. That is, the magnetic conducting plate 400 can constitute part of the appearance of the display device 10, and the magnetic conducting plate 400 is exposed to the outside of the display device 10 through the mounting hole. In this way, the thickness of the display device 10 can be reduced.

[0176] In some embodiments, the display device 10 provided by the embodiments of the present application comprises 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 comprises a backlight module 200.

[0178] In some embodiments, the display device 10 comprises the excitation unit 300.

[0179] In some embodiments, the display device 10 comprises the lamp panel 220.

[0180] In some embodiments, the lamp panel 220 comprises the lamp panel body 221.

[0181] In some embodiments, the lamp panel 220 comprises the backlight source 222 configured to emit light rays towards the display panel 100. The excitation unit 300 is configured to drive the display panel 100 to vibrate and emit sound.

[0182] In some embodiments, the display 906 comprises the display panel 100 and the backlight module 200.

[0183] In some embodiments, the backlight module 200 comprises the lamp panel 220 configured to provide backlight for the display panel 100; the backlight module 200 comprises the optical film set 210 located between the display panel 100 and the lamp panel 220, and the display panel 100 and the lamp panel 220 are arranged in a spaced manner and form a gas layer M; the backlight module 200 further comprises the support 230 elastically abutting between the lamp panel 220 and the optical film set 210. In this way, by arranging the support 230, the display panel 100, the backlight module 200 and the lamp panel 220 can be approximately equivalent to a single-layer screen.

[0184] In some embodiments, the excitation unit 300 comprises the vibration coil 310, wherein the structure, function and benefits of the vibration coil 310 have been described in the above embodiments, and will not be repeated here. The excitation unit 300 further comprises a magnetic assembly, and the vibration coil 310 and the magnetic assembly are configured to generate vibration and drive the lamp panel 220 to vibrate, so as to transmit the vibration of the lamp panel 220 to the display panel 100. The single-layer screen can effectively transmit the vibration of the lamp panel 220 to the display panel 100, and the vibration transmission efficiency is high, and the sound emitting effect of the display device 10 is good.

[0185] 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 above embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the above 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.

[0186] For the sake of explanation, the foregoing descriptions have been presented in terms of specific embodiments. However, it is to be appreciated that specific embodiments described herein are not intended to limit the scope of the present application, which is defined with reference to the following claims. Various modifications and changes can be made thereto by those skilled in the art which fall within the scope of the present application as defined by the following claims. The embodiments were chosen and described in order to explain the principles of the application and the practical application and to enable others skilled in the art to understand for implementing various embodiments and with various modifications as are suited to the particular use contemplated.

Claims

1. A display device, characterized by comprising: The display device comprises: a display panel; a backlight module comprising: an optical film set; a lamp plate; and a plurality of supports, the optical film set being located between the display panel and the lamp plate; an excitation unit comprising: a vibration coil; and a magnetic assembly, the vibration coil being attached to a side wall of the lamp plate facing away from the optical film set, the magnetic assembly being located on a side of the lamp plate facing away from the optical film set, the magnetic assembly being configured to generate a first magnetic field, the vibration coil being configured to generate an alternating second magnetic field after being energized, so that the second magnetic field interacts with the first magnetic field and drives the lamp plate to vibrate; the display panel is spaced apart from the lamp plate and forms a gas layer, a plurality of supports are spaced apart and elastically abut between the lamp plate and the optical film set to transmit the vibration of the lamp plate to the display panel, wherein the projection of the excitation unit on the lamp plate at least covers the projection of part of the supports on the lamp plate.

2. The display device according to claim 1, wherein: a first conductive circuit is attached to a side wall of the lamp plate facing the optical film set, and a second conductive circuit is attached to a side wall of the lamp plate facing away from the optical film set, 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, The number of lamp plates is a plurality, and a plurality of lamp plates are arranged in an array, and each lamp plate is provided with one or more vibration coils.

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

5. The display device according to claim 1 or 2, wherein: the vibration coil comprises a winding vibration part; the magnetic assembly comprises a plurality of magnetic members arranged side by side, any two adjacent magnetic members have opposite polarities, and the projection of any two adjacent magnetic members on the lamp plate is configured to be spaced apart by different parts of the winding vibration part.

6. The display device according to claim 5, wherein: the winding vibration part comprises a plurality of straight line segments, the straight line segments are parallel to each other, any two adjacent straight line segments are connected in series through the connecting segment, any two adjacent straight line segments are provided with the magnetic member therebetween, and the extension direction of the magnetic member is parallel to the straight line segment.

7. The display device of claim 6, wherein, The input end and the output end of the vibration coil are located outside the end of the projection of the magnetic member on the lamp plate.

8. The display device of claim 5, wherein, The winding vibration part is a plurality, and the extension directions of the plurality of winding vibration parts are the same. The vibration coil further comprises a series connection part, any two adjacent winding vibration parts are connected in series through the series connection part, so that the current directions in different winding vibration parts are the same.

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

10. A display device, characterized by comprising: The display device comprises: a display panel; a backlight module comprising: an optical film set; a lamp plate; and a plurality of supports, the optical film set being located between the display panel and the lamp plate; An excitation unit, the excitation unit comprising a vibration coil and a magnetic assembly, the vibration coil and the magnetic assembly being configured to generate vibrations and to entrain the lamp panel in vibrations; The display panel is arranged spaced apart from the lamp panel and forms a gas layer, and the support member is elastically pressed between the lamp panel and the optical film group to transmit the vibration of the lamp panel to the display panel.

Images