Display device

Abstract

The embodiment of the utility model belongs to the technical field of display, and provides display equipment which comprises a display panel, a lamp panel and an exciter, and the vibration output end of the exciter is connected with the lamp panel to drive the lamp panel to vibrate; and the exciter drives the display panel to vibrate and produce sound through the gas in the cavity between the lamp panel and the display panel, so that the acoustic effect is good, and sound and picture integration is easy to realize. Besides, an actuating piece of the exciter easily generates a large amount of heat due to reciprocating vibration, the heat generated by vibration of the exciter is transmitted to one side deviating from the vibration output end of the exciter by arranging a damper, and a gap is formed between the damper and the backlight assembly; thus, heat generated by vibration of the exciter can be dissipated through air and also can be dissipated through the damper, the temperature of the actuating piece can be reduced, the influence of local temperature on the image display quality is reduced, and the image display quality of the display equipment is improved.

Description

TECHNICAL FIELD

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

[0002] The size of a loudspeaker in a display device, such as a television, is generally small due to the limitation of the appearance and installation position of the display device. The loudspeaker is forced to adopt a downward or rearward sound emission mode, which separates the sound image position from the image position, and thus the viewing experience is not good and the audio-visual experience of sound and image integration cannot be provided.

[0003] In theory, a panel display device can generate sound waves as long as the display panel can be directly vibrated by a sound emission exciter. For example, an OLED (Organic Light-Emitting Diode) screen has realized a self-sound emission technology, i.e., the OLED panel functions as a display and a loudspeaker diaphragm to realize the audio-visual effect of sound and image integration. However, the sound emission exciter has poor heat dissipation performance, and the heat is transferred to the display panel, which causes the local temperature of the display panel to rise and results in the deviation of the local display brightness and color of the image. CONTENT OF THE UTILITY MODEL

[0004] Some embodiments of the present application provide a display device, which can realize the vibration sound emission of a display screen, and the actuator of a vibration exciter can be cooled by a spring wave.

[0005] To achieve the above object, some embodiments of the present application provide a display device, comprising:

[0006] a display panel configured to display image information;

[0007] a lamp panel provided with a plurality of lamp panels and spliced with each other, and configured to provide backlight for the display panel, and a cavity is formed between the lamp panel and the display panel;

[0008] an exciter arranged on a side of the lamp panel away from the display panel and configured to drive the lamp panel to vibrate; the exciter comprises:

[0009] a spring wave having a spacing with the lamp panel, and configured to transfer the heat generated by the vibration of the exciter to a side away from the vibration output end of the exciter.

[0010] The display device of some embodiments of the present application sets up a display panel to display image information; sets up a lamp panel to provide backlight for the display panel, a plurality of lamp panels are spliced with each other, an exciter is connected with the lamp panel to drive the lamp panel to vibrate; the exciter is set on the side of the lamp panel away from the display panel, so that the setting of the exciter does not affect the display function of the display panel; the vibration output end of the exciter is connected with the lamp panel to drive the lamp panel to vibrate; and the exciter drives the display panel to vibrate and make sound through the gas in the cavity between the lamp panel and the display panel, the acoustic effect is better, and the sound and picture are easily integrated. In addition, the actuator of the exciter is easy to generate a large amount of heat due to reciprocating vibration, the heat generated by the vibration of the exciter is transmitted to the side away from the vibration output end of the exciter through the elastic wave, and the elastic wave has a spacing with the backlight assembly; in this way, the heat generated by the vibration of the exciter can be dissipated through the elastic wave in addition to the heat dissipation through the air, which is beneficial to reduce the temperature of the actuator, reduce the influence of local temperature on the image display quality, and improve the image display quality of the display device. BRIEF DESCRIPTION OF DRAWINGS

[0011] 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 as follows. 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.

[0012] Figure 1 An operation scene diagram between a display device and a control device according to some embodiments of the present application;

[0013] Figure 2 A configuration block diagram of a display device according to some embodiments of the present application;

[0014] Figure 3 A cross-sectional view of a display device according to some embodiments of the present application;

[0015] Figure 4 A cross-sectional view of a display device according to some embodiments of the present application;

[0016] Figure 5 A layout diagram of an exciter and a lamp panel according to some embodiments of the present application;

[0017] Figure 6 A layout diagram of an exciter and a lamp panel according to some embodiments of the present application;

[0018] Figure 7 A layout diagram of an exciter and a lamp panel according to some embodiments of the present application;

[0019] Figure 8 A layout diagram of an exciter and a lamp panel according to some embodiments of the present application;

[0020] Figure 9 A cross-sectional view of an exciter for some embodiments of the application;

[0021] Figure 10 A cross-sectional view of a damper for some embodiments of the application;

[0022] Figure 11 A structural view of a damper for some embodiments of the application;

[0023] Figure 12 A structural view of a damper for some embodiments of the application;

[0024] Figure 13 A cross-sectional view of a damper for some embodiments of the application;

[0025] Figure 14 A cross-sectional view of a damper for some embodiments of the application;

[0026] Figure 15 A structural view of a damper for some embodiments of the application;

[0027] Figure 16 A structural view of a damper for some embodiments of the application;

[0028] Figure 17 A cross-sectional view of a display device for some embodiments of the application;

[0029] Figure 18 A cross-sectional view of a display device for some embodiments of the application;

[0030] Figure 19 A cross-sectional view of a display device for some embodiments of the application;

[0031] Figure 20 A schematic view of an arrangement of support members for some embodiments of the application;

[0032] Figure 21 A schematic view of a first sound-emitting region of a display device according to some embodiments of the application;

[0033] Figure 22 A schematic view of a second sound-emitting region of a display device according to some embodiments of the application;

[0034] Figure 23 A schematic view of a third sound-emitting region of a display device according to some embodiments of the application;

[0035] Figure 24 A schematic view of a fourth sound-emitting region of a display device according to some embodiments of the application;

[0036] Figure 25 A distribution diagram of an exciter of a display device provided for some embodiments of the present application.

[0037] Explanation of reference signs:

[0038] 10: display device; 20: smart device; 30: server;

[0039] 100: display panel; 110: optical film assembly; 111: brightness enhancement film; 112: fluorescent film; 113: diffusion film; 120: display film layer;

[0040] 210: lamp plate; 201: left main channel area; 202: right main channel area; 203: center channel area; 204: left surround channel area; 205: right surround channel area; 206: bass area; 210a: first lamp plate; 210b: second lamp plate; 211: connecting piece;

[0041] 300: support;

[0042] 400: exciter; 410: actuating piece; 411: connecting structure; 420: spring; 4201: body part; 4202: first connecting part; 4203: second connecting part; 421: fiber layer; 422: heat conduction layer; 423: heat conduction film; 4231: through hole; 430: shell; 440: compression ring; 450: magnetic assembly; 451: magnetic conducting piece; 452: magnetic piece; 460: elastic pad; 470: damping block; 480: fixing pin;

[0043] 500: back plate; 501: back plate body; 502: first side plate; 503: opening; 505: first adhesive piece;

[0044] 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; M: cavity; N: magnetic air gap. DETAILED DESCRIPTION

[0045] In order to make the purpose, implementation and advantages of the present application clearer, the following will describe the exemplary implementation of the present application clearly and completely in combination with the drawings of the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only some of the embodiments of the present application, but not all the embodiments.

[0046] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the following described embodiments, and is not intended to limit the embodiments of the present application. Unless otherwise stated, these terms should be understood according to their ordinary and general meanings.

[0047] Furthermore, the terms "comprise", "comprising", "have", "having", "include", "including", "contain", "containing", "provide", "providing", "offer", "offering", "specify", "specifying", "imply", "implies", "impllying", "suggest", "suggesting" and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or article of manufacture that comprises a list of components does not necessarily comprise only those components in the list, but can include additional components not expressly listed or inherent to such product or article of manufacture.

[0048] In the description of the present application, it is to be understood that the orientation or positional relationship indicated by terms such as "central", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like is based on the orientation or positional relationship shown in the drawings, and is merely intended to facilitate the description of the present application and simplify the description, and is not indicative or suggestive of the specific orientation in which the device or element indicated must be constructed and operated, and therefore cannot be understood as a limitation on the present application.

[0049] The terms "first", "second", "third", etc. are merely configured for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. 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.

[0050] In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] For a conventional display device, for example, a television, a loudspeaker is installed to output sound. The loudspeaker is usually installed on the bottom side or back side of the display device, resulting in the separation of the sound image position and the image position, which is not good for the visual experience, and cannot provide an audio-visual experience of sound and picture integration. In the related art, an exciter is provided on the display device to realize screen sound emission, so that the display panel has both display and sound emission functions, and realizes an audio-visual effect of sound and picture integration.

[0052] In the related art, the exciter of the display device has poor heat dissipation performance, and the vibration output end of the exciter becomes the only heat transfer path. Since the vibration output end of the exciter is in contact with the display panel, heat is transferred to the display panel, causing the local temperature of the display panel to rise, resulting in the deviation of the local display brightness and color of the image.

[0053] In some exciters, a liquid is filled between the voice coil and the magnetic attraction structure of the exciter to increase the heat dissipation technology, but it is only applicable to high-frequency speakers with small amplitude, and the high temperature can cause the magnetic liquid to evaporate, splash, and the heat dissipation effect is limited.

[0054] Therefore, some embodiments of the present application provide a display device, the exciter of which includes an actuator, a damper, and a shell, the damper is connected with the actuator and the shell respectively, and the damper transmits the heat of the actuator to the shell for heat dissipation, so as to reduce the temperature of the actuator and reduce the influence of local temperature on the image display quality.

[0055] In related technologies, compared with a display device with an OLED light source as a light source, because the OLED display screen is a self-luminous screen, and the OLED display screen itself has a certain flexibility, the exciter is arranged on the back of the OLED display screen, so that the OLED display screen elastically deforms and emits sound under the excitation vibration of the exciter. In a liquid crystal display device, the liquid crystal display device has a backlight module, and the exciter cannot be directly arranged on the back of the display panel, and the lamp plate in the backlight module has 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, a support can be arranged between the display panel and the lamp plate of the Mini-LED display device or other liquid crystal display device, and the vibration of the lamp plate is transmitted to the display panel by using the support as a transmission medium, so as to improve the transmission efficiency of the vibration from the lamp plate to the display panel. In addition, the support can maintain the gap of the cavity M between the lamp plate and the display panel within a predetermined range, so as to avoid the risk of collision noise and abrasion caused by the light source and the display panel touching each other at a certain position.

[0056] The technical solutions in some embodiments of the present application will be described clearly and completely below with reference to the drawings in some embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0057] The display device provided by the embodiments of the present application can have various implementation forms, for example, can be a television, a smart television, a monitor, an electronic bulletin board, an electronic table, etc. Figure 1 And Figure 2 is a specific implementation of the display device of the present application.

[0058] Figure 1 is a schematic diagram of an operation scene between a display device and a control device according to an exemplary embodiment of the present application. As shown inFigure 1 As 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.

[0059] Figure 2 For an example, a structural schematic diagram of the display device is shown as Figure 2 In some embodiments, the display device 10 includes a tuner demodulator 901; the tuner demodulator 901 receives broadcast television signals through wired or wireless receiving modes, and demodulates audio and video signals and EPG data signals from multiple wireless or wired broadcast television signals.

[0060] In some embodiments, the display device 10 includes a communicator 902; the communicator 902 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 sending and receiving of control signals and data signals with the control device 900 or the server 30 through the communicator 902.

[0061] In some embodiments, the display device 10 includes a detector 903; the detector 903 is configured to collect signals of external environment or interaction with the outside. For example, the detector 903 includes a light receiver configured to collect ambient light intensity sensors; or the detector 903 includes an image collector such as a camera, which can be configured to collect external environment scenes, user attributes or user interaction gestures, or the detector 903 includes a sound collector such as a microphone, which is configured to receive external sounds.

[0062] In some embodiments, the display device 10 includes an external device interface 904; the external device interface 904 can include but is not limited to any one or more of the following: a high-definition multimedia interface (HDMI), an analog or data high-definition component input interface (component), a composite video input interface (CVBS), a USB input interface (USB), an RGB port, etc. It can also be a composite input / output interface formed by the above multiple interfaces.

[0063] In some embodiments, the display device 10 includes a controller 905;

[0064] In some embodiments, the display device 10 comprises a display 906; the display 906 comprises a display screen component configured to present a picture, and a driving component to drive the image display, configured to receive the image signal originated from the controller output, and to display the video content, the image content, and the menu operation interface component, and the user operation UI interface. 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.

[0065] In some embodiments, the display device 10 comprises an audio output interface 907;

[0066] In some embodiments, the display device 10 comprises a memory 908;

[0067] In some embodiments, the display device 10 comprises a power supply 909;

[0068] In some embodiments, the display device 10 comprises at least one of the user interface 910. The user interface 910 can be configured to receive the control signal of the control device 900 (such as an infrared remote controller, etc.).

[0069] In some embodiments, the controller comprises a processor;

[0070] In some embodiments, the controller comprises a video processor;

[0071] In some embodiments, the controller comprises an audio processor;

[0072] In some embodiments, the controller comprises a graphics processor;

[0073] In some embodiments, the controller comprises a RAM;

[0074] In some embodiments, the controller comprises a ROM;

[0075] In some embodiments, the controller comprises a first interface to an n-th interface configured to input / output signals.

[0076] In some embodiments, the controller 905 and the tuner and demodulator 901 can be located in different split devices, i.e. the tuner and demodulator 901 can also be in an external device of the main device where the controller 905 is located, such as an external set-top box, etc.

[0077] The controller 905 controls the operation of the display device and the response to the user's operation 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 displayed on the display 906, the controller 905 can perform an operation related to the object selected by the user command.

[0078] 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, and the like.

[0079] 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 by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through a sensor.

[0080] 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. It can be an icon, a window, a control, and the like interface elements displayed in a display screen of an electronic device, wherein the control can include an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a widget, and the like visible interface elements.

[0081] Referring to Figure 3 Some embodiments of the present application provide a display device 10, which can be a liquid crystal display device. 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 surface of the display device 10. Accordingly, the side of the display device 10 facing the user is the front side, and 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.

[0082] The display device 10 includes a display panel 100 configured to display image information such as text, images, and the like. The display panel 100 includes a display film layer 120. The display film layer 120 can be a liquid crystal film layer. The display film layer 120 can include 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 TFT substrate includes a data line and a scan line. The liquid crystal molecules change direction to emit light from the backlight through the color filter substrate and generate a picture of a preset color by whether the data line and the scan line are powered on or not.

[0083] The display device 10 of some embodiments of the present application further includes a lamp panel 210 to provide backlight for the display panel 100. The lamp panel 210 includes a plate body and a light source. The plate body can be an aluminum plate, a printed circuit board (PCB), or the like. The light source can be a light-emitting diode (LED), a mini light-emitting diode (Mini LED), or a micro light-emitting diode (Micro LED). The light source can be multiple and arranged at intervals on the plate body.

[0084] In some embodiments, considering the size of the display device 10 and the manufacturing process of the lamp panel 210, and the like, the lamp panel 210 is provided in multiple, and the multiple lamp panels 210 are arranged in an array.

[0085] In combination with Figure 3 and Figure 4 , the multiple independent lamp panels 210 are spliced together to form a whole. For example, two adjacent lamp panels 210 are provided with a connecting piece 211 on the side away from the display panel 100. The connecting piece 211 fixes the two adjacent lamp panels 210 together, so that the two adjacent lamp panels 210 are spliced together. The connecting piece 211 can be an adhesive, such as double-sided tape, foam, or the like, which is simple and convenient to connect. Alternatively, the connecting piece 211 includes a base layer and an adhesive on the base layer, and the adhesive splices the two adjacent lamp panels 210 together.

[0086] As Figure 4As shown, the cavity M is formed between the lamp plate 210 and the display panel 100, and when the cavity M is closed, the gas inside the cavity M cannot flow with the outside air. The light source of the lamp plate 210 is located in the cavity M. The gas in the cavity M has viscosity, and its kinematic viscosity is much higher than that of water. The gas in the cavity M can be equivalent to a damping spring, which is configured to transmit the vibration between the lamp plate 210 and the display panel 100, so that the display panel 100 vibrates to produce sound.

[0087] The display device 10 can be a liquid crystal display device. The display device 10 has a backlight module, which can be a direct backlight module. The backlight module has a lamp plate to provide backlight for the display panel through the light source of the lamp plate. When the lamp plate vibrates, the gas in the cavity M is compressed, and the vibration is transmitted to the display panel through the cavity M to drive the display panel to vibrate. The display panel produces sound through the sound waves generated by the vibration, so that the display panel can display pictures and also replace the loudspeaker to produce sound.

[0088] The gap size of the cavity M can be determined according to the light source of the lamp plate, 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 gap between the backlight plate and the liquid crystal display panel corresponding to the cavity M is relatively small, thereby reducing the thickness of the cavity M and improving the vibration transmission effect of the cavity M. Therefore, in this embodiment, the light source of the backlight module is a sub-millimeter light emitting diode (Mini-LED).

[0089] For example, the gap of the cavity M can be 0.3mm-10mm, the gap of the cavity M can be 10mm at most, or the gap of the cavity M can be 0.3mm or 1mm, etc. For example, when the gap of the cavity M is 1mm, the thickness of the cavity M is relatively small, and the transmission efficiency of the vibration force output by the exciter can be improved. When the gap of the cavity M is 0.3mm, the distance between the exciter 400 and the display panel 100 is relatively short, the vibration is more intense, and the sound production effect is better. When the gap of the cavity M is 10mm, the thickness of the cavity M is relatively large, and the mutual collision between the display panel and the light source at a certain position during vibration can be avoided. Specifically, the gap of the cavity M can be 0.3mm-1mm, 1mm-2mm, 2mm-3mm, 3mm-4mm, 4mm-5mm, 5mm-6mm, 6mm-7mm, 7mm-8mm, 8mm-9mm, 9mm-10mm. For example, the gap of the cavity M can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, etc. It should be noted that the values and value ranges involved in some 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.

[0090] With reference to Figure 4 The display device of some embodiments of the present application further comprises an exciter 400 for providing vibration for the display panel 100 to produce sound. Specifically, the exciter 400 is arranged on the side of the lamp panel 210 away from the display panel 100, and the arrangement of the exciter 400 does not affect the display of the display device. The exciter 400 is configured to drive the lamp panel 210 to vibrate, and the vibration force is transmitted to the display panel 100 by the damping spring formed by the gas in the cavity M, so that the display panel 100 vibrates to produce sound.

[0091] In some embodiments, a cavity M is formed between the lamp panel 210 and the display panel 100, and the cavity M can also be a non-closed cavity.

[0092] The vibration output end of the exciter 400 is connected with the lamp panel 210. In some embodiments, the vibration output end of the exciter 400 is connected with the lamp panel 210, as shown in Figure 3 In this embodiment, the lamp panel 210 is connected by the connecting piece 211, and the connecting piece 211 is connected with the back plate 500 of the display device.

[0093] In some embodiments, the vibration output end of the exciter 400 is connected to the joint of the lamp panel 210. In this embodiment, the lamp panels 210 are jointed by the connecting member 211, and the lamp panels 210 are connected to the backboard 500 of the display device through the subsequent attachment Figure 17 of the first adhesive member 505.

[0094] The arrangement of the exciter 400 when the vibration output end of the exciter is connected to the joint of the lamp panel 210 is described below in combination with the drawings.

[0095] In combination with Figure 5 to Figure 8 , the plurality of lamp panels 210 are arranged in an array and jointed, and the joint gaps of the lamp panels 210 are divided into two types, one type of joint gap extends along the lateral direction of the display device, and the other type of joint gap extends along the longitudinal direction of the display device. The exciter 400 can be arranged at the lateral joint of the lamp panel 210, and / or the exciter 400 can be arranged at the longitudinal joint of the lamp panel 210, and / or the exciter 400 can be arranged at the cross joint of the lamp panel 210, i.e., the intersection of the lateral joint and the longitudinal joint.

[0096] In some embodiments, the lamp panels 210 are jointed by the connecting member 211 to form an integral backlight panel.

[0097] In some embodiments, the joint gap extending along the lateral direction of the display device can be defined as a lateral joint gap, and correspondingly, the connecting member 211 includes a lateral connecting member extending along the lateral direction of the display device. The exciter 400 can be arranged on the lateral connecting member, as shown in FIG. 4A. Multiple exciters 400 can be arranged, and the multiple exciters 400 can be arranged in the extension direction of the lateral connecting member with intervals. The multiple exciters 400 can be arranged in a rectangular matrix on the multiple lateral connecting members, as shown in FIG. 4B. Figure 5

[0098] In some embodiments, the joint gap extending along the longitudinal direction of the display device can be defined as a longitudinal joint gap, and correspondingly, the connecting member 211 includes a longitudinal connecting member extending along the longitudinal direction of the display device. The exciter 400 can be arranged on the longitudinal connecting member, as shown in FIG. 4C. Multiple exciters 400 can be arranged, and the multiple exciters 400 can be arranged in the extension direction of the longitudinal connecting member with intervals. The multiple exciters 400 can be arranged in a rectangular matrix on the multiple longitudinal connecting members, as shown in FIG. 4D. Figure 6 Figure 6

[0099] Of course, the exciter 400 can be arranged on both the lateral connecting member and the longitudinal connecting member, for example, the exciter is arranged at the intersection of the lateral connecting member and the longitudinal connecting member. When multiple exciters 400 are arranged, at least one exciter 400 is arranged on the lateral connecting member, and at least one exciter 400 is arranged on the longitudinal connecting member, as shown in FIG. 4E. Figure 7

[0100] ​​​​In some possible implementations, the transverse connecting member extends to both ends of the transverse direction of the lamp plate 210; or, the two ends of the transverse connecting member do not extend to both ends of the transverse direction of the lamp plate 210, and the extension length of the transverse connecting member is less than the transverse dimension of the lamp plate 210, as shown in FIG. 2B. Figure 8 As shown in FIG. 2B, a plurality of transverse connecting members can be arranged at one transverse joint of the backlight plate; or, one transverse connecting member is arranged, and the transverse connecting member extends through both ends of the transverse direction of the backlight plate, as shown in FIG. 2B. In this way, the reliability of the splicing of the lamp plate 210 can be ensured. Figure 5 As shown in FIG. 2B, a plurality of transverse connecting members can be arranged at one transverse joint of the backlight plate; or, one transverse connecting member is arranged, and the transverse connecting member extends through both ends of the transverse direction of the backlight plate, as shown in FIG. 2B. In this way, the reliability of the splicing of the lamp plate 210 can be ensured.

[0101] In some possible implementations, the longitudinal connecting member extends to both ends of the longitudinal direction of the lamp plate 210, as shown in FIG. 2C. Figure 8 Or, the two ends of the longitudinal connecting member do not extend to both ends of the longitudinal direction of the lamp plate 210, and the extension length of the longitudinal connecting member is less than the longitudinal dimension of the lamp plate 210, as shown in FIG. 2D. Figure 7 As shown in FIG. 2C, a plurality of longitudinal connecting members can be arranged at one longitudinal joint of the backlight plate; or, one longitudinal connecting member is arranged, and the longitudinal connecting member extends through both ends of the longitudinal direction of the backlight plate, as shown in FIG. 2C. In this way, the reliability of the splicing of the lamp plate 210 can be ensured. Figure 5 As shown in FIG. 2C, a plurality of longitudinal connecting members can be arranged at one longitudinal joint of the backlight plate; or, one longitudinal connecting member is arranged, and the longitudinal connecting member extends through both ends of the longitudinal direction of the backlight plate, as shown in FIG. 2C. In this way, the reliability of the splicing of the lamp plate 210 can be ensured.

[0102] In some embodiments of the present application, a plurality of independent lamp plates 210 are spliced, and the vibration output end of the exciter 400 is connected to the spliced part of the lamp plate 210. The exciter 400 directly transmits vibration to the plurality of lamp plates 210, and the vibration quality is relatively small, and the energy attenuation is slow. The exciter 400 supports the lamp plate 210, and there is no need to arrange a connecting plate on the side of the lamp plate 210 away from the display panel 100, which facilitates reducing the assembly difficulty of the display device, and facilitates reducing the thickness of the whole machine.

[0103] The exciter 400 of some embodiments of the present application can be any one or more of an electromagnetic exciter, a magnetostrictive exciter and a piezoelectric exciter, and has high applicability. In some embodiments, the exciter 400 can include a magnetic field generating unit (for example, a magnet) and a vibration coil. The magnetic field generating unit is configured to generate a magnetic field. By inputting a constantly changing current in the vibration coil, the force acting on the vibration coil in the magnetic field generated by the magnetic field generating unit is constantly changed, so as to generate vibration.

[0104] In combination with Figure 9 , the exciter 400 of some embodiments of the present application includes a spring 420. The spring 420 has a spacing with the backlight assembly 200, specifically, the spring 420 has a spacing with the lamp plate 210, which facilitates the spring 420 to contact and transfer heat to the lamp plate. The spring 420 is configured to transfer the heat generated by the vibration of the exciter 400 to the side away from the vibration output end of the exciter 400.

[0105] In some embodiments, the exciter 400 further comprises a shell 430, which is used to mount the exciter 400.

[0106] In some embodiments, the exciter 400 further comprises an actuator 410, a vibration output end of the actuator 410 is connected with the splicing part of the lamp plate 210; one end of the elastic wave 420 is connected with the actuator 410, and the other end of the elastic wave 420 is connected with the shell 430.

[0107] When the exciter 400 is started, the actuator 410 vibrates and drives the lamp plate 210 to vibrate, and the vibration force is transmitted to the display panel 100 through the gas in the cavity M to drive the display panel 100 to vibrate and make sound. In this way, the display device of some embodiments of the present application can realize front sound, and the sound image position is approximately coincident with the center position of the picture, realizing sound and picture integration, and the user's audio-visual effect is better.

[0108] In some embodiments, the central axis of the exciter 400 is perpendicular to the lamp plate 210, and the vibration output direction of the exciter 400 is along the central axis and perpendicular to the surface of the display device, that is, Figure 9 the vertical direction.

[0109] The vibration output end of the actuator 410 forms a connecting structure 411 to increase the connection area of the actuator 410 and the lamp plate 210, and avoid the actuator 410 and the lamp plate from being separated from each other.

[0110] In some embodiments, the connecting structure 411 is sheet-shaped, which can make the actuator 410 and the lamp plate 210 have a larger connection area, and the sheet-shaped structure is beneficial to reduce the weight of the exciter 400.

[0111] The central axis of the elastic wave 420 of some embodiments of the present application coincides with the central axis of the exciter 400. The elastic wave 420 comprises a body part 4201;

[0112] In some embodiments, the elastic wave 420 comprises a first connecting part 4202;

[0113] In some embodiments, the elastic wave 420 comprises a second connecting part 4203;

[0114] The body part 4201 is arranged in a plane parallel to the display panel, the body part 4201 is annular, and the body part 4201 is wavy along the radial direction, so that the elastic wave 420 has elasticity. The inner end of the body part 4201 is bent to form the first connecting part 4202, and the first connecting part 4202 is connected with the actuator 410; the outer end of the body part 4201 is bent to form the second connecting part 4203, and the second connecting part 4203 is connected with the shell 430. The second connecting part 4203 can be directly connected with the shell 430, or the second connecting part 4203 can be indirectly connected with the shell 430 through other components.

[0115] Exemplarily, the first connecting portion 4202 and the second connecting portion 4203 are in a sheet structure, which is beneficial to increase the connecting area of the elastic wave 420 and the shell 430 and the actuating member 410, and is beneficial to improve the stability of the connection and heat transfer.

[0116] The exciter 400 of some embodiments of the present application transmits the heat generated by the vibration of the actuating member 410 to the shell 430 for heat dissipation through the elastic wave 420. In this way, the heat generated by the actuating member 410 can be dissipated through the elastic wave 420 in addition to air cooling, which is beneficial to reduce the temperature of the actuating member 410 and reduce the influence of local temperature on the image display quality. In addition, the first connecting portion 4202 is arranged to increase the connecting area with the actuating member 410, and the second connecting portion 4203 is arranged to increase the connecting area with the shell 430, thereby improving the heat dissipation effect.

[0117] The elastic wave 420 of some embodiments of the present application increases the heat conduction path of the actuating member 410. The heat conduction coefficient of the elastic wave 420 is about 3-4 times that of copper, and the transverse heat conduction coefficient of the elastic wave 420 can reach 1000 W / m·K, which is obviously more efficient than air cooling, and can reduce the temperature of the actuating member 410, reduce the local temperature of the screen of the display device, avoid the appearance of "hot" spots on the screen, reduce the non-uniformity of the brightness and color of the screen, and increase the maximum power and working reliability of the exciter or loudspeaker.

[0118] The heat conduction coefficient of the elastic wave 420 of some embodiments of the present application is several times that of general copper, aluminum and other metal materials, so that the heat of the actuating member 410 can be mainly transmitted to the shell 430 through the elastic wave 420, thereby reducing the temperature of the vibration output end of the actuating member 410 and reducing the influence of local temperature on the image display quality of the display device.

[0119] In some embodiments, the elastic wave 420 is bonded to the actuating member 410 and the shell 430, for example, the elastic wave 420 is bonded to the actuating member 410 and the shell 430 by glue, and the connection mode is simple and stable.

[0120] Referring to Figure 10 to Figure 12 In some possible implementations, the elastic wave 420 includes a fiber layer 421 arranged in a stack;

[0121] In some embodiments, the elastic wave 420 includes a heat conduction layer 422 arranged in a stack.

[0122] The fiber layer 421 includes, but is not limited to, a mesh cloth, a glass mesh cloth, and the like, and is subjected to resin impregnation and curing treatment. The heat-conducting layer 422 can be a graphene film, which can be prepared by using flake graphite as raw material, preparing graphene oxide slurry through oxidation, and then performing film coating, sintering reduction, and calendering processes. Alternatively, the heat-conducting layer 422 can be formed by coating or spraying a heat-conducting material on the fiber layer 421.

[0123] In some examples, the heat-conducting layer 422 is flexible, so that the elastic wave 420 has a certain elastic deformation capability.

[0124] In one possible manufacturing method of the elastic wave 420, on one hand, flake graphite is used as raw material to perform oxidation and pulping processes to form graphene oxide slurry, and then a base film is coated, and sintering reduction and calendering processes are performed to form a graphene film. On the other hand, a fiber mesh cloth is used as raw material, and the fiber mesh cloth is impregnated in resin to form a fiber film. Finally, the graphene film and the fiber film are stacked and formed into a wave shape through embossing, and after curing, the elastic wave 420 with high heat-conducting performance is formed.

[0125] The elastic wave 420 of some embodiments of the present application uses the fiber layer 421 as a skeleton and is formed by compounding the fiber layer 421 and the heat-conducting layer 422, which not only has elasticity but also has high heat-conducting performance, thereby facilitating the transfer of heat generated by the actuating member 410 to the housing 430 and reducing the transfer of heat generated by the actuating member 410 to the display panel.

[0126] In some examples, referring to Figure 10 and Figure 12 , the elastic wave 420 includes the fiber layer 421 stacked and arranged.

[0127] In some examples, the elastic wave 420 includes the heat-conducting layer 422.

[0128] In some examples, the fiber layer 421 is provided with two layers, and the heat-conducting layer 422 is located between the two layers of the fiber layer 421.

[0129] In other examples, referring to Figure 11 , the elastic wave 420 includes the fiber layer 421 stacked and arranged.

[0130] In other examples, the elastic wave 420 includes the heat-conducting layer 422 stacked and arranged, and the heat-conducting layer 422 is provided with two layers, and the fiber layer 421 is located between the two layers of the heat-conducting layer 422.

[0131] In yet other examples, the elastic wave 420 includes a plurality of fiber layers 421.

[0132] In yet other examples, the elastic wave 420 includes a plurality of heat-conducting layers 422, and the plurality of fiber layers 421 and the plurality of heat-conducting layers 422 are alternately stacked and arranged.

[0133] The elastic wave 420 of some embodiments of the present application improves the structural strength of the elastic wave 420 by arranging multiple fiber layers 421, and improves the heat conduction performance of the elastic wave 420 by arranging multiple heat conduction layers 422.

[0134] In combination Figure 13 In some embodiments, the heat conduction layer 422 is in contact with the shell 430, which is conducive to improving the heat transfer efficiency and in turn improving the heat dissipation efficiency of the actuating member 410. When the heat conduction layer 422 is located on at least one surface of the elastic wave 420, the surface is directly in contact with the shell 430; when the heat conduction layer 422 is located in the inner layer of the elastic wave 420, for example, when the heat conduction layer 422 is located between two fiber layers 421, the fiber layer 421 of the elastic wave 420 facing the shell 430 is provided with a notch, so that the heat conduction layer 422 is arranged on the surface of the elastic wave 420, and in turn is in contact with the shell 430. In combination Figure 9 , the second connecting portion 4203 of the elastic wave 420 is provided with a notch corresponding to the fiber layer 421, so that the heat conduction layer 422 is arranged on the surface of the elastic wave 420, and the surface is in contact with the shell 430.

[0135] It can be understood that the heat conduction layer 422 can be directly in contact with the shell 430, or the heat conduction layer 422 is indirectly connected with the shell 430 through other components, and the heat conduction layer 422 is indirectly connected with the shell 430 through other components.

[0136] In combination Figure 14 to Figure 16 In some possible embodiments of the present application, the elastic wave 420 includes a heat conduction film 423 arranged in layers;

[0137] In some embodiments, the elastic wave 420 includes a fiber layer 421;

[0138] In some embodiments, the heat conduction film 423 is provided with a plurality of through holes 4231. The material and preparation method of the fiber layer 421 can be the same as the above-mentioned embodiments, and then the heat conduction film 423 is prepared to form an integrated elastic wave 420 through bonding or hot melting process. The through holes 4231 provided on the heat conduction film 423 can be circular holes, elliptical holes, polygonal holes, irregularly shaped holes, etc.; a plurality of through holes 4231 can be arranged in a matrix on the heat conduction film 423, such as a rectangular matrix, a circular matrix, etc. The number, shape and arrangement of the through holes 4231 are not limited in some embodiments of the present application.

[0139] The thickness of the heat-conducting film 423 can be 100-1000 μm, for example, 100-200 μm, 200-300 μm, 300-400 μm, 400-500 μm, 500-600 μm, 600-700 μm, 700-800 μm, 800-900 μm, 900-1000 μm, or 200 μm, 300 μm, 400 μm, 500 μm, 600 μm, 700 μm, 800 μm, 900 μm, etc.

[0140] The elastic wave 420 of some embodiments of the present application has the fiber layer 421 as a framework, and has the heat-conducting film 423 and a plurality of through holes 4231 on the heat-conducting film 423, so as to improve the heat dissipation efficiency of the heat-conducting film 423. In addition, the heat-conducting film 423 can have a certain flexibility.

[0141] In some examples, referring to Figure 16 , the heat-conducting film 423 has two layers, and the fiber layer 421 is arranged between the two layers of the heat-conducting film 423.

[0142] In other examples, referring to Figure 14 and Figure 15 , the fiber layer 421 has two layers, and the heat-conducting film 423 is arranged between the two layers of the fiber layer 421.

[0143] In yet other examples, the heat-conducting film 423 and the fiber layer 421 each have a plurality of layers, and the heat-conducting film 423 and the fiber layer 421 are alternately arranged.

[0144] The elastic wave 420 of some embodiments of the present application has a plurality of fiber layers 421, so as to improve the structural strength of the elastic wave 420. The elastic wave 420 has a plurality of heat-conducting films 423, so as to improve the heat-conducting performance of the elastic wave 420.

[0145] For the elastic wave 420 of the present embodiment, the heat-conducting film 423 is in contact with the shell 430, so as to improve the heat transfer efficiency, and further improve the heat dissipation efficiency of the actuating member 410.

[0146] Referring again to Figure 9 , the exciter 400 of some embodiments of the present application further includes a compression ring 440 configured to compress the elastic wave 420 against the shell 430, and the compression ring 440 also has a heat-conducting performance. For example, the compression ring 440 can be a metal piece, so as to ensure the heat transfer efficiency. The second connecting portion 4203 of the elastic wave 420 is compressed against the shell 430 by the compression ring 440, so as to improve the stability and tightness of the connection between the elastic wave 420 and the shell 430, and facilitate the heat transfer.

[0147] Exemplarily, the compression ring 440 can be bonded with the shell 430, the compression ring 440 and the elastic wave 420, and the connection mode is simple and stable.

[0148] With continuous reference to Figure 9 Taking the exciter 400 as an example of an electromagnetic exciter, the electromagnetic exciter includes a magnetic assembly 450 and a voice coil, wherein the magnetic assembly 450 is configured to generate a magnetic field, and the voice coil vibrates in the magnetic field along the axial direction of the voice coil.

[0149] In some embodiments, the magnetic assembly 450 includes a magnetic conducting member 451.

[0150] In some embodiments, the magnetic assembly 450 includes a magnetic member 452, and a magnetic gap N is formed between the magnetic conducting member 451 and the magnetic member 452, wherein the magnetic conducting member 451 is in a cylindrical shape with an opening, the magnetic member 452 is arranged on the bottom surface in the magnetic conducting member 451, and a gap between the inner wall surface of the magnetic conducting member 451 and the magnetic member 452 becomes the magnetic gap N. The magnetic assembly 450 is configured to provide a stable magnetic field in the magnetic gap N.

[0151] One end of the voice coil is connected with the lamp plate 210, and a sheet-shaped connecting structure 411 can be further arranged between the voice coil and the lamp plate 210 to increase the connection area between the voice coil and the lamp plate 210 and avoid mutual separation between the voice coil and the lamp plate 210. The other end of the voice coil is inserted into the magnetic gap N, and the voice coil is fixed on the shell 430 through the elastic wave. With the change of the magnetic field, the voice coil is forced to reciprocate along the axial direction of itself. That is, when the exciter 400 is an electromagnetic exciter, the voice coil constitutes the actuating member 410, and one end of the actuating member 410 away from the vibration output end is located in the magnetic gap N.

[0152] In this way, under the action of the magnetic field, the electromagnetic force causes the voice coil to resonate at a high frequency, directly vibrating the lamp plate 210, and the reaction force of the electromagnetic force causes the exciter 400 with a large mass to resonate at a low frequency and vibrate the lamp plate 210 through the connecting member 211. The shell of the exciter 400 has no fixed support, but vibrates with the vibration of the driven lamp plate 210, which is the biggest difference between the exciter shell fixed on the support excitation mode.

[0153] The magnetic conducting member 451 is fixedly connected with the shell 430, and the other end of the elastic wave 420 is connected with the shell 430 through the magnetic conducting member 451. Specifically, the second connecting portion 4203 of the elastic wave 420 is compressed on the magnetic conducting member 451 through the compression ring 440. Exemplarily, the second connecting portion 4203 and the magnetic conducting member 451, the compression ring 440 and the magnetic conducting member 451, and the compression ring 440 and the shell 430 are bonded, and the connection mode is simple and stable.

[0154] The exciter 400 of some embodiments of the present application reduces the width size of the exciter 400 by connecting the elastic wave 420 to the shell 430 through the magnetic conductive piece 451. Since the axial size of the actuator 410 is large, the lamination and compression of the compression ring 440, the magnetic conductive piece 451 and the shell 430 will not affect the overall thickness of the exciter 400. By arranging the connection mode of the elastic wave 420 in this way, not only the stability of the connection can be ensured, but also the compact structure of the exciter 400 is facilitated.

[0155] Specifically, the magnetic conductive piece 451 of some embodiments of the present application includes a U-shaped body and a third connecting portion. The two ends of the opening of the U-shaped body are bent and extended away from each other to form the third connecting portion, and the third connecting portion is connected with the shell 430.

[0156] Continuing to refer to Figure 9 , the part of the magnetic conductive piece 451 in contact with the elastic wave 420 is provided with a ventilation hole to improve the heat dissipation efficiency of the magnetic conductive piece 451 and improve the heat dissipation amount of the actuator 410 through the elastic wave 420. The ventilation hole can be a circular hole, and the shape, number and arrangement of the ventilation hole are not limited in some embodiments of the present application.

[0157] In some possible embodiments, the part of the shell 430 in contact with the magnetic conductive piece 451 is provided with a ventilation hole, which can be opposite to the ventilation hole, to further improve the heat dissipation efficiency. The ventilation hole can be a circular hole, and the shape, number and arrangement of the ventilation hole are not limited in some embodiments of the present application.

[0158] Referring to Figure 17 , the display device 10 of some embodiments of the present application further includes a back plate 500, which is arranged on the side of the lamp plate 210 away from the display panel 100, i.e. the back plate 500 is arranged on the back side of the lamp plate 210 and is configured to support the lamp plate 210 and the display panel 100. The material of the back plate 500 can be aluminum alloy, steel, etc. to provide effective support.

[0159] The back plate 500 is provided with an opening 503, and the actuator 410 of the exciter 400 is connected with the splicing part of the lamp plate 210 through the opening 503. In this way, the back plate 500 does not need to be provided with a convex bump, but only needs to be provided with the opening 503, which is conducive to simplifying the structure of the back plate 500, facilitating processing and reducing costs. Moreover, there is no back plate 500 at the corresponding position of the exciter 400, which is conducive to reducing the thickness size of the display device.

[0160] In some embodiments, continuing to refer to Figure 17 , the back plate 500 includes a back plate body 501;

[0161] In some embodiments, continuing to refer to Figure 17The back plate 500 comprises a first side plate 502, and the back plate body 501 is configured to support the lamp plate 210 and the display panel 100. The back plate body 501 is provided with an opening 503. The first side plate 502 extends along the edge of the back plate body 501 and protrudes from the back plate body 501 towards one side of the display panel 100, that is, the first side plate 502 protrudes from the front side of the back plate body 501, so that the first side plate 502 is arranged outside the display panel 100 and the lamp plate 210 in the circumferential direction.

[0162] With reference to the foregoing Figure 17 The display device 10 of some embodiments of the present application further comprises a first adhesive 505, which can be double-sided tape, foam, etc. The first adhesive 505 is configured to connect the back plate 500 and the lamp plate 210. The first adhesive 505 can be provided in multiple pieces to ensure that the distance between different positions of the lamp plate 210 and the back plate 500 is within a predetermined range, that is, the vibration amplitude of the lamp plate 210 at different positions is relatively uniform, thereby avoiding noise during vibration of the lamp plate 210.

[0163] In addition, the first adhesive 505 can limit the position of the lamp plate 210, thereby avoiding deformation of the lamp plate 210 after the display device 10 is assembled, which affects the vibration sound.

[0164] In some embodiments, the first adhesive 505 is arranged between two adjacent lamp plates 210, and the first adhesive 505 forms a connecting piece to connect the two adjacent lamp plates 210. In this way, the first adhesive 505 not only connects the lamp plates 210, but also connects the lamp plates 210 and the back plate 500, thereby simplifying the assembly process of the display device 10 and improving production efficiency.

[0165] With reference to the foregoing Figure 17 In some embodiments, the housing 430 of the exciter 400 is connected to the back plate 500 by a fixing pin 480, and the fixing pin 480 can be perpendicular to the back plate 500. The housing 430 is provided with an elastic pad 460, and the housing 430 is connected to the back plate 500 by the elastic pad 460.

[0166] The elastic pad 460 can be made of silicone, rubber, etc. The elastic pad 460 can be sleeved on the outside of the fixing pin 480. The housing 430 is provided with a matching hole, and the outer wall surface of the elastic pad 460 is provided with a clamping groove for clamping the housing 430. In this way, the two sides of the matching hole are provided with part of the elastic pad 460, that is, the cross-sectional shape of the elastic pad 460 is approximately in the shape of an I-beam, thereby avoiding interference between the housing 430 and the fixing pin 480 or the back plate 500 during vibration of the exciter 400. The structure, material, etc. of the elastic pad 460 are not limited in the present embodiment.

[0167] The elastic force direction of the elastic pad 460 is parallel to the thickness direction of the display device 10, so that the housing 430 and the back plate 500 have a variable relative position. That is, during the vibration of the exciter 400, the housing 430 can reciprocate relative to the back plate 500, at this time, the exciter 400 also constitutes an approximate inertial driving mode to drive the lamp plate 210 to vibrate, avoiding the influence of the frequency response of the display device 10 due to the relative fixation of the housing 430 and the back plate 500.

[0168] Referring to Figure 18 In other embodiments, the end of the housing 430 is provided with a damping block 470, which can be double-sided tape, foam, etc. The damping block 470 can be connected to the side of the lamp plate 210 facing the back plate 500, so that the housing 430 and the lamp plate 210 have a larger relative movement amplitude, which is beneficial to realize the exciter 400 driving the display panel 100 to vibrate in an inertial driving mode.

[0169] In this way, when the exciter 400 is working, the actuator 410 can generate a vibration with a higher frequency and drive the lamp plate 210 to vibrate, and through the reaction force of the actuator 410, the housing 430 can drive the lamp plate 210 to vibrate with a lower frequency, that is, the housing 430 vibrates with the lamp plate 210, and the exciter 400 drives the lamp plate 210 to vibrate in an inertial driving mode.

[0170] Continuing to refer to Figure 17 and Figure 18 The display device of some embodiments of the present application further comprises an optical film assembly 110, and the display film layer 120 is a display film layer, and the optical film assembly 110 is arranged on the side of the display film layer 120 facing the lamp plate 210.

[0171] According to the type of light emitted by the lamp plate 210, the optical film assembly can be of different types. For example, when the lamp plate 210 emits white light, the optical film assembly 110 can include a reflective sheet, a light guide plate, a brightness enhancement film, etc. Among them, the reflective sheet is attached to the surface of the lamp plate 210 where the light source is arranged.

[0172] When the lamp panel 210 emits blue light, the optical film assembly 110 can include the diffusion film 113, the fluorescent film 112, and the brightness enhancement film 111. The diffusion film 113 is arranged on the front side of the lamp panel 210 and is configured to mix the light emitted by the plurality of lamp panels 210 uniformly, that is, to convert the point lamp panel into a surface lamp panel. The fluorescent film 112 converts the light emitted by the lamp panel 210 into white light. In this way, the color of the light emitted by the lamp panel 210 is not limited, and the lamp panel 210 can emit blue light or purple light. The brightness enhancement film 111 is configured to improve the brightness of the light. It can be understood that when the lamp panel 210 emits white light, the optical film assembly 110 can also include the diffusion film 113, the fluorescent film 112, and the brightness enhancement film 111. The present embodiment is described by taking the optical film assembly 110 as an example.

[0173] In some embodiments, the edge of the display panel 100 is sealingly connected with the edge of the lamp panel 210, so as to form a sealed cavity M between the display panel 100 and the lamp panel 210.

[0174] In some embodiments, the display panel 100 and the optical film assembly 110 can also be bonded and fixed two by two, for example, by using light-sensitive glue (UV glue), foam, double-sided adhesive tape, and the like.

[0175] That is, the display panel 100 and the optical film assembly 110 can be bonded and fixed to form an integral whole. At this time, the cavity M is formed between the optical film assembly 110 and the lamp panel 210.

[0176] When the display panel 100 and the optical film assembly 110 are pressed together, there can be a gas gap between the display panel 100 and the brightness enhancement film 111, between the brightness enhancement film 111 and the fluorescent film 112, and between the fluorescent film 112 and the diffusion film 113. The cavity M is formed between the display panel 100 and the lamp panel 210, and the gas gap is in a closed state.

[0177] Specifically, the display device 10 includes a second adhesive 250 having adhesion. The second adhesive 250 is double-sided adhesive tape or foam. The second adhesive 250 extends along the edge of the lamp panel 210, and the optical film assembly 110 and the lamp panel 210 are bonded and fixed by the second adhesive 250, that is, the diffusion film 113 and the lamp panel 210 are bonded and fixed by the second adhesive 250. In this way, the optical film assembly 110 and the lamp panel 210 form a sealed cavity M, and the cavity M can be filled with air, nitrogen, or the like.

[0178] The cavity M is sealed, that is, the gas in the cavity M and the external air cannot flow into each other. The cavity M can be equivalent to a damping spring and is configured to transmit the vibration between the lamp panel 210 and the display panel 100.

[0179] In combinationFigure 19 The display device of some embodiments of the present application further comprises a support 300, which can be made of silica gel or rubber, etc. The support 300 can be provided in plurality, and the plurality of supports 300 are arranged between the display panel 100 and the lamp panel 210.

[0180] In some embodiments, there is a problem in the vibration transmission process of the exciter 400. The air gap thickness between the display panel 100 and the lamp panel 210 changes greatly due to material tolerance, assembly process tolerance, and self-gravity, etc., which leads to the vibration transmission efficiency consistency cannot be guaranteed, and the display panel 100 and the lamp panel 210 are bonded to cause vibration noise and abrasion.

[0181] To avoid the above risks, some embodiments of the present application increase the support 300 between the display panel 100 and the lamp panel 210. The support 300 has the following characteristics: one side is in contact with the display panel 100, and the other side is in contact with the lamp panel 210. One side or both sides are connected to the contact position by mechanical structure or pasting, etc. The support 300 can include a buffer part, which can be made of high resilience material or a combination of materials with resilience function, such as silica gel, etc. The support 300 can ensure the stability of the air gap size between the display panel 100 and the lamp panel 210, avoid abnormal collision noise between the display panel 100 and the lamp panel 210, and the solid support 300 improves the transmission efficiency of vibration from the lamp panel 210 to the display panel 100.

[0182] By arranging the support 300 between the lamp panel 210 and the diffusion film 113, the optical film assembly 110 and the lamp panel 210 can be connected as a whole, which can be equivalent to a single-layer screen, avoiding the relative movement between the optical film assembly 110 and the lamp panel 210 due to the too large cavity M gap.

[0183] And because the optical film assembly 110 converts and homogenizes the light generated by the lamp panel 210 light source, even if the support 300 is arranged on the light-emitting side of the lamp panel 210, no shadow will be generated on the display panel 100, leading to uneven brightness of the display panel 100. In this way, the shape and size of the support 300, the contact area between the support 300 and the diffusion film 113, etc. can not be limited. The cross section (the cross section is perpendicular to the display device) of the support 300 can be rectangular, cylindrical, as shown in Figure 19 The cross section shape of the support 300 can also be conical, trapezoidal, dumbbell-shaped or other shapes, etc.

[0184] In some embodiments, the support 300 is interference fitted between the display panel 100 and the light panel 210, i.e. the two ends of the support 300 are interference fitted to the display panel 100 and the light panel 210, respectively.

[0185] In some embodiments, the support 300 can be connected to the light panel 210 by a first adhesive structure, such as UV glue, double-sided tape, etc., to prevent the support 300 from moving relative to the light panel 210.

[0186] The side of the support 300 adjacent to the light panel 210 is provided with a welding structure, and the support 300 is fixed to the light panel 210 by the welding structure. For example, a metal-weldable material structure is injection molded or mechanically fitted or bonded in the support 300, and the welding structure is fixed to the light panel 210 by welding, thereby achieving the purpose of fixing the support 300. This method can make the support 300 firmly installed, and is conducive to batch automatic assembly.

[0187] In addition, the material of the support 300 can be an elastic material such as silicone rubber, but the elastic material has the problem of changing in hardness due to temperature changes. When the display device is working, the internal temperature changes, which can cause the hardness of the support 300 to change, thereby affecting the support and vibration transmission optimization of the support 300. The optimization can be achieved by a double-material composite method. The elastic material part ensures the vibration buffering effect, and the non-elastic material part, i.e. the welding structure 320, ensures that the vibration transmission effect does not change with temperature changes.

[0188] The two ends of the support 300 can be connected by negative pressure adsorption. For example, the two ends of the support 300 can be provided with suction disc structures, and the two ends of the support 300 are fixedly connected to the light panel 210 and the display panel 100, respectively, by the suction disc structures. The process is simple to implement.

[0189] One end of the support 300 is connected by a first adhesive structure, and the other end of the support 300 is connected by a suction disc structure. For example, one end of the support 300 is connected to the light panel 210 by a first adhesive structure, and the other end of the support 300 is fixedly connected to the display panel 100 by a suction disc structure. In this way, the support 300 can be fixed by double-sided bonding or by a mechanical structure, thereby realizing the vibration linkage of the light panel 210 and the display panel 100 and improving the vibration transmission efficiency. However, double-sided bonding or mechanical structure fixation has the disadvantage of complex process implementation, and the suction disc adsorption scheme can improve the realizability of the scheme.

[0190] In combination Figure 20In some embodiments, the plurality of independent lamp panels 210 are spliced by the connectors 211, which can be in the form of strips.

[0191] In some embodiments, the connectors 211 can include two types, i.e., a first type of connector and a second type of connector. The first type of connector is located on the side of the lamp panel 210 away from the display panel 100, and the vibration output end of the exciter 400 can be connected with the first type of connector. The second type of connector is located on the side of the lamp panel 210 facing the display panel 100, and the second type of connector can connect the plurality of support members 300 into one body. For example, the second type of connector is integrally formed with the plurality of support members 300.

[0192] In some embodiments, the support members 300 are installed in a large number, and there is a problem of complex process. To optimize this problem, some embodiments of the present application connect the support members 300 into one body through the second type of connector, thereby effectively reducing the installation difficulty of the support members 300.

[0193] The display device of some embodiments of the present application further includes a back shell (not shown in the drawings); the back shell is located on the side of the exciter 400 away from the lamp panel 210, i.e., the back shell is arranged on the back side of the exciter 400. The back shell can be the appearance shell of the display device, and the controller, the electric connection wire, etc. of the display device can be arranged between the back plate 500 and the back shell to simplify the appearance of the display device. The material of the back shell can be plastic, metal, etc.

[0194] In combination with the description, the arrangement mode of the exciter 400 when the exciter 400 is connected with the lamp panel 210 is described. Figure 3 Figure 21 to Figure 25 The exciter 400 can drive the lamp panel 210 to generate a plurality of sound generating areas, and different sound generating areas can correspond to different sound channels, so that the display device can have a multi-channel sound generating effect.

[0195] The exciter 400 can drive the lamp panel 210 to generate a plurality of sound generating areas, and different sound generating areas can correspond to different sound channels, so that the display device can have a multi-channel sound generating effect.

[0196] The exciter 400 is a plurality of, and the plurality of exciters 400 are respectively connected with part of the lamp panels 210. The plurality of exciters 400 are configured to drive part of the lamp panels 210 to vibrate according to image information. When part of the lamp panels 210 vibrate to generate sound and transmit the vibration to the display panel 100, the display panel 100 can locally vibrate to generate sound, thereby improving the accuracy and sensitivity of the sound generating position, and the sound generating position of the display device can change with the change of the image, achieving the effect of sound tracking the image.

[0197] ​In addition, the plurality of lamp panels 210 are independent of each other, and when one of the lamp panels 210 provided with the exciter 400 vibrates, the other lamp panels 210 will not be affected, that is, the other lamp panels 210 will not vibrate. Therefore, according to the display image, the exciter 400 drives part of the lamp panels 210 to vibrate, which can reduce the vibration mass and vibration area, reduce the energy attenuation block, improve the reliability of the lamp panel 210 and the optical structure, avoid the problems of damage to the lamp panel 210 or wear of the optical film, and improve the display quality of the display device.

[0198] The lamp panel 210 can be a Mini-LED panel, and the light of each lamp panel 210 can be independently controlled to achieve higher positioning accuracy of the display panel 100 when displaying a picture. In addition, the display device can also be a laser television, and some embodiments of the present application do not limit the specific picture display principle of the display device, as long as the display panel 100 can be vibrated and sounded by vibrating the lamp panel 210 through the exciter 400.

[0199] In combination Figure 3 and Figure 21 In some embodiments, the plurality of lamp panels 210 can include a first lamp panel 210a and a second lamp panel 210b, at least one exciter 400 is connected to the first lamp panel 210a, and no exciter 400 is provided on the second lamp panel 210b. Each sound emitting area corresponds to at least one first lamp panel 210a. Among them, adjacent sound emitting areas are provided; or at least one second lamp panel 210b is provided between different sound emitting areas.

[0200] The exciter 400 directly drives the first lamp panel 210a to vibrate, and since the first lamp panel 210a and the second lamp panel 210b are independent of each other. Even if a connecting piece 211 is provided between the two adjacent lamp panels, since it has elasticity, the vibration of one lamp panel will not affect the vibration of the other lamp panel. Therefore, the vibration of the first lamp panel 210a will not affect the second lamp panel 210b, and the area of the vibration area formed by each first lamp panel 210a is small, which can improve the vibration sensitivity and high frequency extension, and improve the sound emitting performance of the display panel 100.

[0201] Since the exciter 400 directly drives the lamp panel 210 to vibrate, without the need to set a sound emitting plate structure, the overall thickness of the display device can be reduced, and the production cost of the product can be reduced.

[0202] For example, the plurality of lamp panels 210 can be divided into two rows arranged in an up-down manner, wherein the lower row is the plurality of second lamp panels 210b, and the corresponding display panel 100 can produce low-pitched sound; and the upper row is the plurality of first lamp panels 210a or the combination of the first lamp panels 210a and the second lamp panels 210b, and is used to form a sound emitting area of each sound channel. The second lamp panels 210b in the lower row can form a low-pitched area 206 for emitting low-frequency sound.

[0203] The specific examples of different numbers of sound emitting areas are described in detail below.

[0204] Please continue to refer to Figure 21 In a first possible implementation, the plurality of sound emitting areas can include a left main sound channel area 201 and a right main sound channel area 202, and the left main sound channel area 201 and the right main sound channel area 202 are symmetrically arranged relative to a central axis of the display device. The left main sound channel area 201 and the right main sound channel area 202 respectively correspond to at least two first lamp panels 210a. The second lamp panel 210b is arranged between the left main sound channel area 201 and the right main sound channel area 202.

[0205] It can be understood that the left main sound channel area 201 can correspond to two first lamp panels 210a, and the right main sound channel area 202 can correspond to two first lamp panels 210a. Each first lamp panel 210a is provided with an exciter 400, and each first lamp panel 210a is driven to vibrate by the exciter 400. Thus, the vibrations of the left main sound channel area 201 and the right main sound channel area 202 can be prevented from affecting each other.

[0206] Please refer to Figure 22 In a second possible implementation, the plurality of sound emitting areas can include a left main sound channel area 201, a right main sound channel area 202, and a center sound channel area 203, and the left main sound channel area 201, the center sound channel area 203, and the right main sound channel area 202 are sequentially and adjacently arranged along the length direction of the display panel 100. The left main sound channel area 201, the center sound channel area 203, and the right main sound channel area 202 respectively correspond to at least two first lamp panels 210a. The left main sound channel area 201 is provided with a second lamp panel 210b on the side away from the center sound channel area 203. The right main sound channel area 202 is provided with a second lamp panel 210b on the side away from the center sound channel area 203.

[0207] It can be understood that the left main sound channel area 201 can correspond to two first lamp panels 210a, the right main sound channel area 202 can correspond to two first lamp panels 210a, and the center sound channel area 203 can correspond to two first lamp panels 210a. Each first lamp panel 210a is provided with an exciter 400, and each first lamp panel 210a is driven to vibrate by the exciter 400. Thus, the vibrations of the left main sound channel area 201, the right main sound channel area 202, and the center sound channel area 203 can be prevented from affecting each other.

[0208] Please refer to Figure 23 In a third possible implementation, the plurality of sound emitting areas can include a left main channel area 201, a right main channel area 202, a center channel area 203, a left surround channel area 204, and a right surround channel area 205, wherein the left surround channel area 204, the left main channel area 201, the center channel area 203, the right main channel area 202, and the right surround channel area 205 are sequentially arranged adjacent to each other along the length direction of the display panel 100. The second sound emitting plate is arranged below the sound emitting areas.

[0209] It can be understood that the difference from the first implementation is that the left surround channel area 204 and the right surround channel area 205 are added. The left surround channel area 204 can be correspondingly provided with a first lamp plate 210a, and the right surround channel area 205 can be correspondingly provided with a first lamp plate 210a. Each first lamp plate 210a is provided with an exciter 400, and each first lamp plate 210a is driven to vibrate by the respective exciter 400. Thus, the vibrations of the left main channel area 201, the right main channel area 202, the center channel area 203, the left surround channel area 204, and the right surround channel area 205 can be prevented from affecting each other. The left and right channels and the surround channels can emit sound in front of the display panel 100 of the display device, and have better sound emitting effects.

[0210] Please refer to Figure 24 In a fourth possible implementation, the plurality of sound emitting areas can include a left main channel area 201, a right main channel area 202, a left surround channel area 204, and a right surround channel area 205. The difference from the third implementation is that the fourth implementation does not provide the center channel area 203, and the specific lamp plate 210 layout of this implementation is not repeated here.

[0211] It should be noted that more sound emitting areas can be provided in some embodiments of the present application, and other sound emitting area arrangement forms can be used, as long as the corresponding first lamp plates 210a of the sound emitting areas are independent of each other and are directly driven to vibrate by different exciters 400. One, two or more exciters 400 can be provided on each lamp plate 210, and the exciters 400 can be arranged in a horizontal direction or in a vertical direction. Please refer to Figure 25 , the exciters 400 can be arranged in a vertical direction, and the specific arrangement of the exciters 400 is not limited in some embodiments of the present application.

[0212] Some embodiments of the present application drive different lamp panels by different exciters to produce local sound, and the different lamp panels do not affect each other when vibrating and sounding, thereby improving the reliability of vibration and sound. While achieving sound and picture synchronization, the vibration energy attenuation is reduced, the medium and high frequency sound effect is improved, and the lamp panel damage or optical film wear is avoided. In addition, the lamp panels in different areas can be controlled by the exciters to vibrate and sound locally according to the picture, so as to realize the effect of sound tracking image.

[0213] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0214] For the convenience of explanation, the above description has been made in combination with specific embodiments. However, the above exemplary discussion is not intended to exhaust or limit the embodiments to the specific forms disclosed above. Various modifications and variations can be derived according to the above teachings. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different modified embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that, include: The display panel is configured to display image information; A lamp panel, wherein multiple lamp panels are provided and spliced ​​together, the lamp panels are configured to provide backlight to the display panel, and a cavity is formed between the lamp panels and the display panel; An exciter, wherein the exciter is disposed on the side of the lamp panel opposite to the display panel, and drives the lamp panel to vibrate; the exciter includes: A spring wave, which is spaced apart from the lamp panel, is configured to transfer the heat generated by the vibration of the exciter to a side away from the vibration output end of the exciter.

2. The display device according to claim 1, characterized in that, The exciter further includes: a housing and an actuator, wherein the vibration output end of the actuator is connected to the lamp plate; The spring is connected between the actuator and the housing, and the spring is configured to transfer heat from the actuator to the housing.

3. The display device according to claim 2, characterized in that, The elastic wave comprises a fiber layer and a thermally conductive layer stacked together.

4. The display device according to claim 3, characterized in that, The thermally conductive layer is in contact with the outer shell.

5. The display device according to claim 2, characterized in that, The elastic wave comprises stacked fiber layers and a thermally conductive layer, wherein there are two fiber layers and the thermally conductive layer is located between the two fiber layers; or... The elastic wave comprises stacked fiber layers and a thermally conductive layer, wherein two thermally conductive layers are provided, and the fiber layer is located between the two thermally conductive layers; or... The elastic wave comprises multiple fiber layers and multiple thermally conductive layers, which are arranged in an alternating stacked manner.

6. The display device according to claim 2, characterized in that, The elastic wave comprises a thermally conductive film and a fiber layer stacked together, and the thermally conductive film is provided with multiple through holes.

7. The display device according to claim 6, characterized in that, The thermally conductive film has two layers, and the fiber layer is disposed between the two layers of the thermally conductive film; or... The fiber layer has two layers, and the thermally conductive film is disposed between the two fiber layers; or... The thermal conductive film and the fiber layer are each provided in multiple layers, and the thermal conductive film and the fiber layer are arranged alternately in a stacked manner.

8. The display device according to claim 2, characterized in that, The actuator also includes a pressure ring configured to press the spring against the housing.

9. The display device according to claim 2, characterized in that, The actuator further includes a magnetic component, which includes a magnetic conductor and a magnetic component, with a magnetic air gap formed between the magnetic conductor and the magnetic component, and the end of the actuator away from its vibration output end located in the magnetic air gap. The other end of the spring is connected to the outer casing via the magnetic conductor.

10. The display device according to claim 9, characterized in that, The portion of the magnetic conductive component that contacts the elastic wave is provided with ventilation holes.

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