Display device

Abstract

The embodiment of the utility model belongs to the display technology, and provides display equipment. The display equipment comprises the display panel, the lamp panel, the sound production plate, the back plate and the exciter, the sound production plate is driven to vibrate through the exciter, then the lamp panel and the display panel are driven to vibrate, and screen sound production is achieved. Moreover, a first elastic heat conduction piece is arranged between the back plate and the sound production plate, heat generated by the lamp panel is transmitted to the back plate through the sound production plate and the first elastic heat conduction piece, the area of the back plate is large, the heat dissipation effect is improved, heat transmitted forwards to the display panel by the lamp panel is reduced, and then the influence of the heat of the lamp panel on the display effect of the display panel is reduced; and the first elastic heat conduction piece has elasticity, so that when the exciter drives the sound production plate to vibrate, the first elastic heat conduction piece can elastically deform to adapt to the interval change between the sound production plate and the back plate, and the influence of the first elastic heat conduction piece on the vibration of the sound production plate is reduced.

Description

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 20, 2024, with application number 202422030481.2 and application name “Display Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] Some embodiments of the present application relate to display technology, and more particularly to a display device. Background Art

[0003] Display devices, such as televisions, have speakers that are limited by their ultra-thin design and installation location. They are generally small and forced to use bottom-firing or rear-firing methods. This results in the separation of the sound and image positions, resulting in a poor viewing experience and an inability to provide a unified audiovisual experience.

[0004] In related technologies, flat-panel display devices can generate sound waves as long as they can directly vibrate the display panel through a sound-generating actuator. For example, OLED (Organic Light-Emitting Diode) screens have already achieved self-sounding technology, where the OLED panel acts as both a display and a speaker diaphragm, achieving a unified audiovisual effect. Liquid crystal display devices require a light board to provide backlighting for the LCD panel, and an actuator to drive the panel's vibrations. Therefore, the heat dissipation performance of the display device is crucial.

[0005] However, current liquid crystal display devices have poor heat dissipation performance, and heat is transferred to the display panel, causing the local temperature of the display panel to rise, thereby affecting the display effect. Utility Model Content

[0006] Some embodiments of the present application provide a display device to solve the technical problem of poor heat dissipation performance of liquid crystal display devices in the related art.

[0007] In a first aspect, some embodiments of the present application provide a display device, comprising:

[0008] The display panel comprises a first surface and a display surface opposite to each other along a thickness direction thereof, wherein the display surface is located above the first surface;

[0009] a light panel, located below the first surface;

[0010] a sounding plate, disposed below the light board and configured to transmit vibration toward the light board;

[0011] A back plate is provided below the sounding plate, and a receiving space is provided between the back plate and the sounding plate;

[0012] An exciter, partially located in the accommodation space; the exciter is connected to the sound plate and the back plate respectively; the exciter is configured to drive the sound plate, the light plate and the display panel to vibrate and emit sound;

[0013] A first elastic heat conductive member is disposed in the accommodating space and bonded to at least one of the back plate and the sound plate; the first elastic heat conductive member is configured to transfer the heat transferred from the light board to the sound plate to the back plate.

[0014] In some embodiments of the present application, a display device is provided in which an exciter drives the sounding board to vibrate, thereby driving the light board and display panel to vibrate, thereby achieving screen sound. Furthermore, a first elastic heat conductor is provided in the accommodation space formed between the back panel and the sounding board. The heat generated by the light board is transferred to the back panel via the sounding board and the first elastic heat conductor. The larger area of ​​the back panel improves the heat dissipation effect, reduces the heat transferred forward from the light board to the display panel, and thereby reduces the impact of the heat from the light board on the display effect of the display panel. Furthermore, the first elastic heat conductor is elastic. When the exciter drives the sounding board to vibrate, the first elastic heat conductor can elastically deform to adapt to the change in the spacing between the sounding board and the back panel, thereby reducing the impact of the first elastic heat conductor on the vibration of the sounding board.

[0015] In some embodiments of the present application, a plurality of the first elastic heat-conducting members are provided, and the plurality of the first elastic heat-conducting members are arranged at intervals on a circumference with the exciter as the center.

[0016] In this way, the size of a single first elastic heat-conducting member is small, which not only facilitates the bonding operation but also provides good bonding flexibility; when a single first elastic heat-conducting member is damaged, it can be replaced individually, which reduces maintenance costs.

[0017] In some embodiments of the present application, the first elastic heat-conducting member is ring-shaped, and the actuator is located at the center of the first elastic heat-conducting member.

[0018] With such an arrangement, the first elastic heat-conducting member has a larger heat transfer area, which is beneficial to improving the heat conduction efficiency.

[0019] In some embodiments of the present application, a first heat dissipation structure is provided on the back plate, and the first heat dissipation structure is opposite to the first elastic heat conductive member along the thickness direction of the display panel.

[0020] The heat transferred to the first elastic heat-conducting member is dissipated through the first heat dissipation structure on the back plate, which is beneficial to improving the heat dissipation effect.

[0021] In some embodiments of the present application, the first heat dissipation structure includes a through hole provided on the back plate.

[0022] In this way, the first heat dissipation structure has a simple structure, requires little improvement to the back plate structure, and facilitates the molding of the back plate.

[0023] In some embodiments of the present application, the first heat dissipation structure includes a heat sink disposed on the back plate.

[0024] In this way, the heat dissipation area can be increased by the radiator, thereby improving the heat dissipation effect. Moreover, the configuration of the radiator is flexible and diverse.

[0025] In some embodiments of the present application, the display device includes a plurality of the light panels, and the plurality of light panels are spliced ​​in the same plane, and an accommodation gap is provided between some of the light panels and the back panel along the thickness direction of the display panel;

[0026] The display device further includes: a second elastic heat-conducting member disposed in the accommodating space; the second elastic heat-conducting member is configured to transfer heat from the lamp board to the back plate.

[0027] In this way, the heat of the lamp board can be directly transferred to the back plate through the second elastic heat-conducting member without using the sound-generating plate to conduct heat, which is beneficial to improving the heat dissipation effect of the lamp board.

[0028] In some embodiments of the present application, the second elastic heat conductive member is bonded to at least one of the lamp board and the back board.

[0029] In some embodiments of the present application, the second elastic heat-conducting member is connected to at least one of the lamp panel and the back panel by bonding, so that the connection method of the second elastic heat-conducting member is simple and stable.

[0030] In some embodiments of the present application, a dimension of the second elastic heat-conducting member along the thickness direction of the display panel is greater than a dimension of the first elastic heat-conducting member along the thickness direction of the display panel.

[0031] Due to the setting of the sound plate, the size of the accommodating interval along the thickness direction of the display panel is larger than the size of the accommodating space along the thickness direction of the display panel. The second elastic heat conductive member is located in the accommodating interval, and the first elastic heat conductive member is located in the accommodating space; the size of the second elastic heat conductive member along the thickness direction of the display panel is larger than the size of the first elastic heat conductive member along the thickness direction of the display panel, so that all light panels can be as close to the same plane as possible to ensure the uniformity of the backlight.

[0032] In a second aspect, some embodiments of the present application provide a display device, comprising:

[0033] The display panel comprises a first surface and a display surface which are opposite to each other along a thickness direction thereof; the display surface is located above the first surface;

[0034] a light board located below the first surface; the light board is configured to provide a backlight source; the light board has an opposite second surface and a light-emitting surface;

[0035] a sounding plate, disposed below the light board and configured to transmit vibration toward the light board;

[0036] An exciter is connected to the sounding board and is configured to drive the sounding board, the light board, and the display panel to vibrate and emit sound; the exciter includes:

[0037] a first magnetic conductive member, wherein the first magnetic conductive member is provided with a first heat dissipation hole;

[0038] The first heat dissipation hole is configured to transfer heat of the actuator to the outside.

[0039] Thus, in some embodiments of the display device of the present application, the exciter drives the sound-generating board to vibrate, which in turn drives the light board and display panel to vibrate, thereby producing sound on the screen. Furthermore, the exciter includes a first magnetic conductive member, which is provided with a first heat dissipation hole. Heat generated by the exciter's vibration is dissipated outward from the exciter through the first heat dissipation hole, thereby improving the exciter's heat dissipation performance and reducing the amount of heat transferred from the exciter to the display panel.

[0040] In some embodiments of the present application, the actuator has a first magnetic air gap;

[0041] The exciter further comprises:

[0042] a first voice coil, at least partially located within the first magnetic air gap and connected to the sounding plate;

[0043] The first magnetic conductive member and the first magnetic air gap are opposite to each other along the axial direction of the first voice coil, and the first heat dissipation hole is opposite to the first voice coil.

[0044] In some embodiments of the present application, the display device comprises a first voice coil at least partially located within the first magnetic air gap. The first voice coil vibrates under the influence of the magnetic field, thereby driving the vibration of the sound plate. The first heat dissipation hole, located opposite the first voice coil, facilitates direct dissipation of heat generated by the vibration of the first voice coil, thereby reducing heat conduction resistance and the amount of heat transferred to other components of the actuator, thereby enhancing the heat dissipation efficiency of the first heat dissipation hole.

[0045] In some embodiments of the present application, a second heat dissipation hole is further provided on the first magnetic conductive member, and the second heat dissipation hole is configured to transfer heat of the exciter to the outside; the second heat dissipation hole is closer to the center of the first voice coil than the first heat dissipation hole.

[0046] In some embodiments of the present application, a second heat dissipation hole is further provided on the first magnetic conductive member, which not only helps to increase the total area of ​​the heat dissipation holes and improve the heat dissipation effect; moreover, the second heat dissipation hole and the first heat dissipation hole are at different distances from the center of the first voice coil. In this way, heat dissipation structures of different ranges are formed with the center of the first voice coil, which helps to further improve the heat dissipation effect of the exciter.

[0047] In some embodiments of the present application, the actuator has a second magnetic air gap;

[0048] The exciter further comprises:

[0049] a second voice coil, at least partially located in the second magnetic air gap and connected to the sounding plate; a diameter of the second voice coil is smaller than a diameter of the first voice coil, and the second voice coil is located inside the first voice coil;

[0050] The first magnetic conductive member and the second magnetic air gap are opposite to each other along the axial direction of the second voice coil, and the second heat dissipation hole is opposite to the second voice coil.

[0051] In some embodiments of the present application, the actuator includes a second magnetic air gap, allowing at least a portion of the second voice coil to be located within the second magnetic air gap. The diameter of the second voice coil is smaller than that of the first voice coil, and the second voice coil is located within the first voice coil. The second voice coil vibrates under the influence of the magnetic field, thereby driving the vibration of the sound plate. The second voice coil and the first voice coil have different frequencies, facilitating full-band sound generation. A second heat dissipation hole, located opposite the second voice coil, facilitates direct dissipation of heat generated by the vibration of the second voice coil, reducing heat conduction resistance and the amount of heat transferred to other components of the actuator, thereby enhancing the heat dissipation efficiency of the second heat dissipation hole.

[0052] In some embodiments of the present application, a plurality of the first heat dissipation holes are provided, and the plurality of the first heat dissipation holes are arranged at intervals along the circumference of the first voice coil.

[0053] In some embodiments of the present application, a plurality of first heat dissipation holes are provided along the circumference of the first voice coil to increase the heat dissipation area and thereby improve the heat dissipation efficiency.

[0054] In some embodiments of the present application, a plurality of second heat dissipation holes are provided, and the plurality of second heat dissipation holes are arranged at intervals along the circumference of the second voice coil.

[0055] In some embodiments of the present application, a plurality of second heat dissipation holes are provided along the circumference of the second voice coil to increase the heat dissipation area and thereby improve the heat dissipation efficiency.

[0056] In some embodiments of the present application, the first heat dissipation hole is a circular hole, and the diameter of the first heat dissipation hole is larger than the diameter of the conductive cable of the first voice coil.

[0057] With this arrangement, the portion of the first voice coil that is opposite to the first heat dissipation hole along the axial direction of the first voice coil is projected onto the first magnetic conductive member and is located within the first heat dissipation hole. The heat of the first voice coil can be dissipated outwards through the first heat dissipation hole, thereby improving the heat dissipation effect.

[0058] In some embodiments of the present application, the second heat dissipation hole is a circular hole, and a diameter of the second heat dissipation hole is larger than a diameter of a conductive cable of the second voice coil.

[0059] With this arrangement, the projection of the portion of the second voice coil that is opposite to the second heat dissipation hole along the axial direction of the second voice coil on the first magnetic conductive member is located inside the second heat dissipation hole, and the heat of the second voice coil can be dissipated outwards through the second heat dissipation hole.

[0060] In some embodiments of the present application, the first heat dissipation hole is a circular hole, and a diameter of the first heat dissipation hole is less than twice a diameter of a conductive cable of the first voice coil.

[0061] Such an arrangement can, on the basis of ensuring the heat dissipation effect of the first heat dissipation hole, reduce the serious magnetic leakage caused by the first heat dissipation hole being too large and affecting the acoustic effect; and can also reduce the structural strength of the first magnetic conductive component affected by the first heat dissipation hole being too large.

[0062] In some embodiments of the present application, the second heat dissipation hole is a circular hole, and a diameter of the second heat dissipation hole is less than twice the diameter of the conductive cable of the second voice coil.

[0063] With this arrangement, the projection of the portion of the second voice coil that is opposite to the second heat dissipation hole along the axial direction of the second voice coil on the first magnetic conductive member is located inside the second heat dissipation hole, and the heat of the second voice coil can be dissipated outwards through the second heat dissipation hole.

[0064] In some embodiments of the present application, the display device further includes:

[0065] A back plate is provided below the sounding plate, and a receiving space is provided between the back plate and the sounding plate; a through hole is provided on the back plate;

[0066] Part of the actuator passes through the through hole so that the part of the actuator is located in the accommodation space;

[0067] The first magnetic conductive member is located outside the accommodating space.

[0068] With this arrangement, the first magnetic conductive member is located on the side of the back plate away from the sound plate, which facilitates the first magnetic conductive member to conduct heat toward the rear side of the back plate, thereby reducing the impact of the exciter heat on the display panel.

[0069] In some embodiments of the present application, the display device further includes

[0070] A rear shell is located below the back plate, with a rear cavity defined between the rear shell and the back plate;

[0071] The display device further includes: a second heat dissipation structure disposed in the rear cavity; the second heat dissipation structure is in contact with the first magnetic conductive member and the rear housing respectively, and is configured to transfer heat from the exciter to the rear housing.

[0072] In some embodiments of the present application, the display device is provided with a second heat dissipation structure between the rear housing and the first magnetic conductive member to increase the heat dissipation area and improve the heat dissipation efficiency of the first magnetic conductive member.

[0073] In some embodiments of the present application, the second heat dissipation structure includes a third elastic heat-conducting member, and the third elastic heat-conducting member is bonded to the first magnetic conductive member.

[0074] In some embodiments of the present application, the second heat dissipation structure is provided with a third elastic heat-conducting member so that the heat generated by the vibration of the actuator is transferred outward through the first magnetic conductive member and the third elastic heat-conducting member, thereby improving the heat dissipation effect.

[0075] In some embodiments of the present application, a plurality of heat-conducting holes are provided on the third elastic heat-conducting member, and the plurality of heat-conducting holes are opposite to the first heat-dissipating holes.

[0076] In some embodiments of the present application, heat can be directly transferred outward through the first heat dissipation holes and the heat conduction holes by providing heat conduction holes on the third elastic heat conductive member. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] In order to more clearly illustrate the implementation methods of some embodiments of the present application or related technologies, the following is a brief introduction to the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0078] Figure 1 A schematic cross-sectional view of a speaker in a display device in the related art;

[0079] Figure 2 A schematic diagram of an operation scenario between a display device and a control device according to some embodiments of the present application;

[0080] Figure 3 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0081] Figure 4 A schematic diagram of the arrangement of light panels of a display device according to some embodiments of the present application;

[0082] Figure 5 A schematic diagram of the arrangement of the first elastic heat-conducting member of the display device in some embodiments of the present application;

[0083] Figure 6 This is a schematic structural diagram of a first elastic heat-conducting member of a display device according to some embodiments of the present application;

[0084] Figure 7 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0085] Figure 8 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0086] Figure 9 A schematic structural diagram of an actuator for a display device according to some embodiments of the present application;

[0087] Figure 10 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0088] Figure 11 A schematic diagram of the arrangement of heat dissipation holes of a first magnetic conductive member of a display device according to some embodiments of the present application;

[0089] Figure 12 A schematic cross-sectional view of a display device according to some embodiments of the present application;

[0090] Figure 13 This is a schematic diagram of the connection between the actuator and the rear housing of the display device in some embodiments of the present application.

[0091] Description of reference numerals:

[0092] 10: Display device; 20: Mobile terminal; 30: Server; 40: Control device; 41: Tuner / demodulator; 42: Communicator; 43: Detector; 44: External device interface; 45: Controller; 46: Display; 47: Audio output interface; 48: Memory; 49: Power supply; 401: User interface;

[0093] 100: display panel; 101: first surface; 102: display surface;

[0094] 200: backlight module; 210, 210a, 210b: light board; 211: second surface; 212: light-emitting surface; 220: sound board;

[0095] 300: support member;

[0096] 400: actuator; 410: first voice coil; 411: first voice coil bobbin; 412: first conductive cable; 420: second voice coil; 421: second voice coil bobbin; 422: second conductive cable; 430: magnetic component; 431: second magnetic conductive component; 432: first magnetic conductive component; 4321: first heat dissipation hole; 4322: second heat dissipation hole; 433: magnet; 440: vibration connector; 450: bracket; 460: elastic wave; 470: first elastic connector; 480: second elastic connector;

[0097] 500: back plate; 501: via hole; 502: accommodation space; 503: accommodation interval; 510: first elastic heat-conducting member; 520: second elastic heat-conducting member; 530: first heat dissipation structure;

[0098] 600: rear housing; 601: heat dissipation vent; 602: rear cavity; 610: second heat dissipation structure; 611: third elastic heat-conducting member; 6111: heat-conducting hole; 612: heat dissipation fin; 620: grille. DETAILED DESCRIPTION

[0099] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0100] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0101] In addition, the terms "comprises" and "comprising" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0102] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0103] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0104] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0105] Conventional display devices, such as televisions, are equipped with speakers to output sound. These speakers are typically mounted on the bottom or back of the display device, resulting in a separation between the sound and the image, resulting in a poor viewing experience and a failure to provide a unified audiovisual experience.

[0106] The display device utilizes "flat panel sound technology" by placing an exciter behind the display panel. Under the action of the exciter, the display panel vibrates and emits sound waves, which produce sound. In other words, the display panel of the display device can be used for both display and sound generation instead of speakers.

[0107] Display devices using OLED light sources as light sources, because OLED displays are self-luminous screens and the OLED displays themselves have a certain degree of flexibility. Therefore, by setting an exciter on the back of the OLED display, the OLED display can be elastically deformed and make sounds under the excitation vibration of the exciter.

[0108] However, in liquid crystal display devices, the liquid crystal display device has a backlight module, and it is impossible to directly set an exciter on the back of the display panel. In addition, the lamp board in the backlight module is relatively hard, making it difficult to couple and transmit its own vibration to the display panel, and the transmission efficiency of the vibration force is low. Therefore, a support member can be set between the display panel and the lamp board of a Mini-LED display device or other liquid crystal display device, and used as a vibration transmission medium to transmit the vibration of the lamp board to the display panel, thereby improving the transmission efficiency of vibration from the lamp board to the display panel. In addition, the support member can maintain the air gap between the lamp board and the display panel within a preset range, avoiding the risk of collision noise and abrasion caused by the light source and the display panel touching each other at a certain position.

[0109] The lamp board in the backlight assembly acts as the backlight source, and as it emits light, it inevitably generates heat. This heat can easily be transferred to the display panel through vibration transmission paths, such as the support components, affecting the display quality. Therefore, improving the heat dissipation performance of the lamp board without affecting vibration transmission is crucial.

[0110] The light panels of conventional LCD devices typically utilize a backplane for support and heat dissipation. Specifically, the light panels are fixed to the backplane's display-facing side. However, for LCD devices with on-screen sound generation, the backplane also houses a control circuit board and edge bezels, preventing the exciter from transmitting vibrations through the backplane to the light panels. To address this, a spacer is placed between the light panels and the backplane, allowing the exciter to pass through the backplane and connect to the light panels, driving their vibrations and reducing vibration losses.

[0111] However, the light panel itself has poor rigidity and poor vibration transmission effect. Therefore, a sound plate is set on the side of the light panel away from the light-emitting surface, using the rigidity of the sound plate to improve the vibration transmission effect; in order to achieve screen sound, a gap is still set between the sound plate and the back plate.

[0112] Although the heat from the light board is transferred to the sound board, the heat still gathers on the sound board and is not dissipated outside the display device.

[0113] To this end, some embodiments of the display device include a heat conductor between the sound board and the back panel. This allows heat transferred from the light panel to the sound board to be conducted through the heat conductor toward the back panel. Furthermore, the heat conductor is elastic, adapting to the vibration displacement of the sound board through elastic deformation, thereby reducing its impact on the vibration of the sound board.

[0114] In addition to the aforementioned light panel, another source of heat in LCD devices is the actuator. The actuator's reciprocating vibration continuously generates heat. For example, in an electromagnetic actuator, the magnetic component generates a magnetic field. Audio current flows through the conductive coil of the voice coil, generating an electromagnetic force in the magnetic field, causing the voice coil to vibrate along its axis.

[0115] The voice coil is directly or indirectly connected to the sound board to drive the sound board and light board to vibrate. Therefore, the heat generated by the voice coil is easily transferred forward along the vibration transmission components (such as the support member) to the display panel, causing the local temperature of the display panel to rise and affecting the display effect.

[0116] As a vibrating component, the voice coil's heat dissipation is crucial. Researchers studying the structure of the exciter discovered that a voice coil typically consists of a voice coil bobbin and a conductive coil wound around it. This led them to consider providing heat dissipation holes in the voice coil itself, for example, on the voice coil bobbin, to improve heat dissipation.

[0117] However, if the conductive coil is wound around the outside of the heat dissipation hole, the heat dissipation effect of the heat dissipation hole is weak; if the heat dissipation hole is set outside the conductive coil, the volume of the conductive coil will be increased, which will in turn increase the volume of the exciter, which is not conducive to the design of a thin and light display device.

[0118] The researchers behind this application continued their research and discovered that, considering the voice coil is located within the magnetic air gap of the magnetic assembly, heat dissipation holes can be provided within the magnetic assembly to dissipate heat generated by the voice coil. The magnetic assembly primarily consists of a magnet and a magnetic conductor. The magnet is used to generate a magnetic field, while the magnetic conductor guides and concentrates the magnetic field generated by the magnet, creating a high-intensity magnetic field within the voice coil area.

[0119] The magnet, as a component that forms the magnetic field, has a shape and volume that are closely related to the magnetic field parameters, directly affecting the sound quality. Heat dissipation holes on the magnet significantly affect the magnetic field, so they are ruled out.

[0120] To this end, the researchers of this application set up heat dissipation holes on the magnetic conductive part, and the heat dissipation holes are opposite to the voice coil to improve the heat dissipation effect.

[0121] Researchers have continued to investigate and discovered two main heat dissipation paths for the exciter: heat dissipation from the backplate, which directs the heat to the backplate; and heat dissipation from the rear housing, which directs the heat to the rear housing. Because the gap between the backplate and the acoustic panel is small, even after heat is directed to the backplate, there's still a chance that it will radiate toward the gap between the two panels.

[0122] To this end, the researchers of this application set up a heat dissipation structure to conduct the heat of the exciter to the back shell. Specifically, one end of the heat dissipation structure is connected to the magnetic conductive part in the heat dissipation hole area, and the other end of the heat dissipation structure is in contact with the back shell or faces the heat dissipation port of the back shell, thereby improving the efficiency and concentration of heat conduction to the outside, thereby improving the heat dissipation effect of the exciter.

[0123] The following will be combined with the accompanying drawings of some embodiments of the present application to clearly and completely describe the technical solutions of some embodiments of the present application. Obviously, the embodiments described are only some embodiments of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of this application.

[0124] The display device provided in the embodiments of the present application may have various implementation forms, for example, it may be a television, a smart TV, a monitor, an electronic bulletin board, an electronic table, etc.

[0125] Figure 1 This is a schematic diagram of an operation scenario between a display device and a control device according to an exemplary embodiment of the present application. Figure 1 As shown, a user can operate the display device 10 via the mobile terminal 20 or the control device 40. In some embodiments, the display device 10 also communicates data with the server 30. The display device 10 can be connected to a local area network (LAN), a wireless local area network (WLAN), and other networks. The server 30 can provide various content and interactions to the display device 10. The server 30 can be a cluster or multiple clusters, and can include one or more types of servers.

[0126] Figure 2A schematic diagram of the structure of a display device in an example is shown in FIG. Figure 2 In some embodiments, the display device 10 includes a tuner-demodulator 41 ; the tuner-demodulator 41 receives broadcast television signals via a wired or wireless reception method, and demodulates audio and video signals, such as EPG data signals, from multiple wireless or wired broadcast television signals.

[0127] In some embodiments, the display device 10 includes a communicator 42 . Communicator 42 is a component configured to communicate with an external device or server using various communication protocols. For example, communicator 42 may include at least one of a Wi-Fi module, a Bluetooth module, a wired Ethernet module, or other network communication protocol chip, or a near-field communication protocol chip, as well as an infrared receiver. Display device 10 can use communicator 42 to send and receive control signals and data signals with control device 40 or server 30.

[0128] In some embodiments, the display device 10 includes a detector 43 configured to collect signals from the external environment or external interactions. For example, the detector 43 may include a light receiver configured as a sensor to collect ambient light intensity; or an image collector, such as a camera, configured to collect external environmental scenes, user attributes, or user interaction gestures; or a sound collector, such as a microphone, configured to receive external sounds.

[0129] In some embodiments, the display device 10 includes an external device interface 44. The external device interface 44 may include, but is not limited to, any one or more of the following: a high-definition multimedia interface (HDMI), an analog or digital high-definition component input interface (component), a composite video input interface (CVBS), a USB input interface (USB), an RGB port, or the like. A composite input / output interface may also be formed by multiple of the above interfaces.

[0130] In some embodiments, display device 10 includes a display 46. Display 46 includes a display screen component configured to present images, a driver component configured to drive image display, and a component configured to receive image signals output from a controller and display video content, image content, a menu control interface, and a user control UI interface. Display 46 can be a liquid crystal display, an OLED display, or a projection display, and can also be a projection device and projection screen.

[0131] In some embodiments, the controller 45 and the tuner / demodulator 41 may be located in different separate devices, that is, the tuner / demodulator 41 may also be located in an external device of the main device where the controller 45 is located, such as an external set-top box.

[0132] In some embodiments, the display device 10 includes at least one of an audio output interface 47, a memory 48, a power supply 49, and a user interface 401. The user interface 401 can be configured to receive control signals from a control device 40 (e.g., an infrared remote control). In some embodiments, the controller includes a processor; a video processor; an audio processor; a graphics processor; RAM; ROM; and first through nth interfaces for input / output signals.

[0133] In some embodiments, display device 10 includes a controller 45. Controller 45 controls the operation of the display device and responds to user operations using various software control programs stored in memory. Controller 45 controls the overall operation of display device 10. For example, in response to receiving a user command configured to select a UI object to be displayed on display 46, controller 45 may perform operations related to the object selected by the user command.

[0134] In some embodiments, the controller includes a central processing unit (CPU), a video processor, an audio processor, a graphics processing unit (GPU), RAM Random Access Memory (RAM), ROM (Read-Only Memory, ROM), and at least one of a first interface to an nth interface configured as input / output, a communication bus (Bus), etc.

[0135] Some embodiments of the present application provide a display device 10, which may be a liquid crystal display device, an OLED display device, a laser display device, or the like. 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 and right sides of the user when the user is facing the display surface of the display device 10. Accordingly, the side of the display device 10 facing the user is the front side, the side of the display device 10 facing away from the user is the back side, the top side of the display device 10 is the top side, and the bottom side of the display device 10 is the bottom side.

[0136] Combine Figure 3 The display device 10 provided in some embodiments of the present application includes a display panel 100, which is used to display image information such as text and images.

[0137] The display panel 100 has a display surface 102 and a first surface 101 facing each other along its thickness direction, wherein the display surface 102 of the display panel 100 faces the front of the display device to display image information such as text and images. Figure 3 In FIG, the thickness direction of the display panel 100 is the up-down direction.

[0138] Exemplarily, the display panel 100 may be a liquid crystal display panel.

[0139] For liquid crystal display devices, the display layer of the display panel 100 is a liquid crystal layer. The display layer may include a color filter (CF) substrate, a thin film transistor (TFT) substrate (also known as an array substrate), and a liquid crystal (LC) layer, with the LC layer located between the color filter substrate and the array substrate. The TFT substrate is provided with data lines and scan lines. The powering of the data and scan lines controls the orientation of the liquid crystal molecules, directing backlight light through the color filter substrate and generating a preset color image.

[0140] The display device of the embodiment of the present application further includes a backlight module 200 , which provides backlight for the display panel 100 .

[0141] In some embodiments, the backlight module 200 includes a light board 210 , which is configured to provide a backlight source and is located below the first surface 101 .

[0142] The light board 210 has a second surface 211 and a light emitting surface 212 facing the display panel 100. The second surface 211 is located on the side of the light board 210 facing away from the display panel 100.

[0143] Exemplarily, the light board 210 includes a board body and a light source. The board body can be an aluminum plate, a printed circuit board (PCB), etc. The light source can be a light-emitting diode (LED), a sub-millimeter light-emitting diode (Mini-Light-Emitting Diode, Mini LED), or a micron-level light-emitting diode (Micro-Light-Emitting Diode, Micro LED). There can be multiple light sources and they are arranged at intervals on the board body. The light source can be a lamp bead or a light bar, etc. The multiple light sources can be fixed to the board body by means of snap-on connection, threaded connection, etc.

[0144] When the light board 210 is a mini-LED, the light of each light board 210 can be controlled independently, so that the display panel 100 has higher positioning accuracy when displaying the picture. In addition, the display device can also be a laser TV. Some embodiments of this application do not limit the specific picture display principle of the display device.

[0145] In some embodiments, the backlight module 200 includes a plurality of light panels 210 , which are arranged in an array on the same plane. This helps ensure the uniformity of the backlight and adapts to the display area of ​​the display panel 100 .

[0146] In some embodiments, a support member 300 is provided on the light-emitting surface of the lamp board 210, and the support member 300 is supported on the display panel 100 and the lamp board 210 to ensure the stability of the air gap size between the display panel 100 and the lamp board 210, and avoid abnormal collision noise between the display panel 100 and the lamp board 210; and the solid state support member 300 is conducive to improving the vibration transmission efficiency from the lamp board 210 to the display panel 100.

[0147] The support member 300 is elastic. For example, the support member 300 is an elastic component. For another example, at least a portion of the support member 300 is elastic. For example, at least a portion of the support member 300 is made of an elastic material such as silicone or rubber.

[0148] In this way, the support member 300 can be elastically deformed to adapt to the change of the air gap between the lamp board 210 and the display panel 100 caused by vibration.

[0149] In some embodiments, the support member 300 has two ends along the thickness direction of the display device. One end of the support member 300 is bonded, welded, clamped, etc. to the light board 210, and the other end of the support member 300 is in contact with the display panel. This can not only fix the relative position of the support member 300 and the light board 210, but also ensure the transmission of vibration force between the light board 210 and the display panel 100.

[0150] In some embodiments, a plurality of support members 300 are provided, and the plurality of support members 300 can be arranged in a rectangular matrix, a circular matrix, etc. The plurality of support members 300 ensures the stability of the air gap between the light board 210 and the display panel 100.

[0151] In some embodiments of the present application, the backlight module 200 further includes a sound board 220, which is disposed on a side of the light board 210 that is away from the display panel 100. Figure 3 , the sounding plate 220 is arranged below the second surface.

[0152] The sounding plate 220 is configured to transmit vibrations toward the light board 210. Compared to the light board 210, the sounding plate 220 has greater rigidity, which facilitates the transmission of vibrations to the light board 210, thereby improving the transmission efficiency of sound waves.

[0153] In some embodiments, the sounding panel 220 comprises a single piece of anisotropic honeycomb core panel. The rigidity of the honeycomb core panel in a first direction is greater than that in a second direction, resulting in different directions of force transmission across the entire panel, thereby achieving the purpose of distinguishing left and right sound channels. The first direction may be the left-right direction of the display device, and the second direction may be the height direction of the display device.

[0154] In some embodiments, the sounding panel 220 may further include a skin covering the surface of the honeycomb core panel.

[0155] The sounding board 220 may also function as a heat conductor, that is, transferring the heat of the light board 210 to the sounding board 220 .

[0156] In some embodiments, the sound board 220 is bonded to the light board 210, which is a simple and reliable connection method. For example, the sound board 220 is bonded to the light board 210 by adhesives such as double-sided tape or foam.

[0157] In some embodiments, the sounding plate 220 is arranged at the joint of two adjacent lamp panels 210, so that fewer sounding plates 220 can be used to transmit vibration to more lamp panels 210, which helps to reduce the use of sounding plates 220. While saving costs, it helps to reduce the sum of the masses of the sounding plates 220 and the lamp panels 210, thereby helping to reduce the loss of vibration energy.

[0158] In some embodiments, at least a portion of the light board 210 is connected to the sound board 220 on a side facing away from the display panel 100 , that is, at least a portion of the light board 210 transmits vibration via the sound board 220 .

[0159] Exemplarily, the sides of all the lamp boards 210 facing away from the display panel 100 are connected to the sound board 220, ensuring that the lamp boards 210 can transmit vibrations through the sound board 220 and also ensuring that all the lamp boards 210 are on the same light-emitting surface.

[0160] For example, part of the lamp board 210 is connected to the sound board 220 on a side facing away from the display panel 100 , so that only part of the lamp board 210 vibrates, which can also save the material of the sound board 220 and reduce material costs.

[0161] In some embodiments of the present application, the display device further includes an actuator 400, which provides vibration for the display panel 100 to produce sound. The actuator 400 is disposed on the side of the sound plate 220 facing away from the light plate 210. Therefore, the installation of the actuator 400 does not affect the display function of the display panel 100.

[0162] The exciter 400 is configured to drive the light board 210 to vibrate through the sound plate 220 , and the vibration force is transmitted to the display panel 100 through the support member 300 , so that the display panel 100 vibrates and generates sound.

[0163] In some embodiments, the exciter 400 is bonded to the sound plate 220, which is a simple and reliable connection method. For example, the exciter 400 is bonded to the sound plate 220 by adhesives such as double-sided tape or foam adhesive.

[0164] In some embodiments, the display device further includes a back plate 500, which is disposed on a side of the sound plate 220 that faces away from the light plate 210. Figure 3 The back plate 500 is disposed below the sound plate 220 .

[0165] There is a gap between the back plate 500 and the sound plate 220 to form an accommodation space 502 , which can avoid the vibration of the sound plate 220 and prevent the back plate 500 from affecting the vibration of the sound plate 220 .

[0166] In some embodiments, the back plate 500 may be made of aluminum alloy, steel, etc. to provide effective support.

[0167] In some embodiments of the present application, the backplate 500 is provided with a via 501, allowing the exciter 400 to pass through the via 501 and connect to the sound plate 220. In this case, part of the exciter 400 is located within the accommodation space 502, while part of the exciter 400 is located on the side of the backplate 500 facing away from the sound plate 220. This eliminates the need for additional installation space for the exciter 400, allowing the space on both sides of the backplate 500 to be reused, facilitating a slimmer and lighter design for the display device.

[0168] In some embodiments, the actuator 400 is connected to the back plate 500 , such that the back plate 500 provides mounting support for the actuator 400 .

[0169] In some embodiments of the present application, the actuator 400 is configured to drive a portion of the light panels 210 to vibrate, which can reduce the number of actuators 400. Furthermore, even if a portion of the light panels 210 vibrates, the vibration force is transmitted to the display panel 100 via the support member 300, thereby expanding the vibration area and achieving screen sound.

[0170] In some embodiments, the actuator 400 is connected to the sound plate 220, driving the portion of the light panel 210 connected to the sound plate 220 to vibrate; this portion of the light panel 210 is connected to the sound plate 220 and receives support from the sound plate 220. Another portion of the light panel 210 can be connected to the back plate 500, which supports the light panel 210.

[0171] Specific reference Figure 4, wherein the lamp board 210a is fixedly connected to the back panel 500, and the connection methods include but are not limited to screw connection, bonding, clamping, etc.; the lamp board 210b is connected to the sound board 220, and there is a gap between the sound board 220 and the back panel 500, and the exciter 400 drives the sound board 220 to vibrate, thereby driving the lamp board 210b to vibrate.

[0172] Exemplarily, the display device is provided with two rows and eight columns, a total of sixteen light boards, wherein the middle four light boards 210 b are connected to the sound board 220 , and the other twelve light boards 210 b are fixedly connected to the back panel 500 .

[0173] Continue to refer to Figure 3 The display device further includes a first elastic heat-conducting member 510 , which is disposed in the accommodating space 502 .

[0174] A first elastic heat conductive member 510 is provided between the back panel 500 and the sound board 220 , so that the heat transferred from the lamp board 210 to the sound board 220 can be transferred to the back panel 500 via the first elastic heat conductive member 510 . The back panel 500 has a large heat dissipation area, which is beneficial to improving the heat dissipation effect of the lamp board 210 .

[0175] Furthermore, the first elastic heat-conducting member 510 can be elastically deformed to adapt to the change in the distance between the sounding plate 220 and the back plate 500 when the sounding plate 220 vibrates, thereby reducing the impact on the vibration of the sounding plate 220 or even not affecting the vibration of the sounding plate 220 .

[0176] At least one of the back plate 500 and the sound plate 220 is bonded to the first elastic heat conductive member 510 . The connection method is simple and reliable, ensuring that the position of the first elastic heat conductive member 510 between the back plate 500 and the sound plate 220 is stable.

[0177] For example, the first elastic heat conductive member 510 is bonded to the back plate 500 and can contact the sound plate 220; alternatively, the first elastic heat conductive member 510 is bonded to the sound plate 220 and can be released from the back plate 500. This ensures that the position of the first elastic heat conductive member 510 between the back plate 500 and the sound plate 220 is stable, and the first elastic heat conductive member 510 is bonded to only one of the back plate 500 and the sound plate 220, allowing for flexible bonding positions.

[0178] Exemplarily, the first elastic heat-conducting member 510 is bonded to the sound plate 220 and the back plate 500 respectively. Such an arrangement is conducive to improving the stability and reliability of the connection of the first elastic heat-conducting member 510.

[0179] In some embodiments, the distance between the first elastic heat conductive member 510 and the exciter 400 in the plane of the back plate 500 is greater than 20 cm, so that the first elastic heat conductive member 510 and the exciter 400 have a larger distance, reducing the impact of the first elastic heat conductive member 510 on the vibration of the sound plate 220.

[0180] With the exciter 400 as the center, the vibration intensity of the exciter 400 decreases in the direction away from the exciter 400. In some embodiments, the first elastic heat-conducting member 510 is distributed in a circular shape with the exciter 400 as the center to ensure uniform force between the sound plate 220 and the back plate 500 on the first elastic heat-conducting member 510.

[0181] In some embodiments, combined Figure 5 Multiple first elastic heat-conducting members 510 are provided, and the plurality of first elastic heat-conducting members 510 are spaced apart and arranged around the actuator 400. This allows for a smaller size of each first elastic heat-conducting member 510, facilitating bonding operations and providing greater flexibility. If a single first elastic heat-conducting member 510 is damaged, it can be replaced individually, reducing maintenance costs.

[0182] Exemplarily, the plurality of first elastic heat-conducting members 510 are evenly spaced on the circumference with the exciter 400 as the center, so that the force between the sounding plate 220 and the back plate 500 is evenly distributed on the circumference with the exciter 400 as the center.

[0183] In other embodiments, combined Figure 6 The first elastic heat-conducting member 510 is annular, and the actuator 400 is located at the center of the first elastic heat-conducting member 510. With this arrangement, the first elastic heat-conducting member 510 has a larger heat transfer area, which is beneficial to improving heat conduction efficiency.

[0184] For example, the first elastic heat-conducting member 510 is a ring, and the exciter 400 is located at the center of the first elastic heat-conducting member 510. This configuration is adapted to the circular structure of the exciter 400, so that the sounding plate 220 and the back plate 500 are evenly stressed in the circumferential direction of the exciter 400.

[0185] In some embodiments, a heat transfer hole is provided on the sound plate 220, and the first elastic heat conductive member 510 is opposite to the heat transfer hole. In this way, the heat of the lamp board 210 can be directly transferred to the first elastic heat conductive member 510 through the heat transfer hole, which is conducive to improving the heat transfer efficiency.

[0186] Since the first elastic heat conductive member 510 is spaced apart from the exciter 400, the first elastic heat conductive member 510 has little effect on the vibration transmission to the sounding plate 220. Therefore, even if a heat transfer space is provided at a position relative to the sounding plate 220 and the first elastic heat conductive member 510, the effect on the vibration transmission to the sounding plate 220 is small and even negligible.

[0187] In some embodiments, combined Figure 7 A first heat dissipation structure 530 is provided on the back plate 500. The first heat dissipation structure 530 is opposite to the first elastic thermal conductive member 510 along the thickness direction of the display device, so that the heat transferred to the first elastic thermal conductive member 510 is dissipated through the first heat dissipation structure 530 on the back plate 500.

[0188] Exemplarily, the first heat dissipation structure 530 can be a through hole arranged on the back panel 500, and the through hole is opposite to the first elastic thermal conductive member 510 along the thickness direction of the display device. In this way, the heat transferred to the first elastic thermal conductive member 510 is dissipated through the through hole to the side of the back panel 500 away from the light board 210, thereby improving the heat dissipation effect.

[0189] For example, the first heat dissipation structure 530 may be a heat sink disposed on the back plate 500, and the heat sink is located on a side of the back plate 500 away from the light board 210. The heat sink may include a plurality of fins to expand the heat dissipation area and improve the heat dissipation effect.

[0190] In some embodiments, combined Figure 8 There is a gap between the light board 210 and the back board 500 along the thickness direction of the display panel 100 to form an accommodating gap 503.

[0191] In some embodiments, the display device may further include a second elastic heat-conducting member 520 , which is disposed in the receiving space 503 . The second elastic heat-conducting member 520 is configured to transfer heat from the light board 210 to the back panel 500 .

[0192] By providing a second elastic heat conductive member 520 between the lamp board 210 and the back plate 500 , the heat of the lamp board 210 can be directly transferred to the back plate 500 through the second elastic heat conductive member 520 without using the sounding board 220 for heat conduction, which is beneficial to improving the heat dissipation effect of the lamp board 210 .

[0193] The second elastic heat-conducting member 520 is bonded between the lamp board 210 and the backboard 500, and the connection method is simple and stable.

[0194] The difference between the second elastic thermal conductive member 520 and the first elastic thermal conductive member 510 is that the size of the second elastic thermal conductive member 520 along the thickness direction of the display device is larger than the size of the first elastic thermal conductive member 510 along the thickness direction of the display device, so that all light panels 210 are in the same plane to ensure the uniformity of the backlight.

[0195] Combine Figure 9 In some embodiments of the present application, the exciter 400 includes a bracket 450 , which serves as a fixing component of the exciter 400 and also provides a mounting structure for other components within the exciter 400 .

[0196] Combine Figure 10 The bracket 450 can be elastically mounted on the back plate 500 , thereby elastically mounting the exciter 400 on the back plate 500 to reduce the vibration force transmitted to the back plate 500 .

[0197] For example, a mounting hole is provided on the bracket 450 , a rubber ring is provided in the mounting hole, and a fastener passes through the rubber ring to be fixedly connected to the back plate 500 , which has a simple and reliable structure.

[0198] In some embodiments, the actuator 400 further includes a magnetic component 430 . The magnetic component 430 is mounted on a bracket 450 and provides a magnetic field for the vibration of the voice coil of the actuator 400 .

[0199] In some embodiments, the actuator 400 includes a first voice coil 410 connected to a bracket 450. When energized, the first voice coil 410 vibrates under the magnetic field of the magnetic component 430. The first voice coil 410 is connected to the sound plate 220, thereby driving the sound plate 220 to vibrate.

[0200] In some embodiments of the present application, the actuator 400 further includes a second voice coil 420, which is connected to a bracket 450. When energized, the second voice coil 420 vibrates under the magnetic field of the magnetic component 430. The second voice coil 420 is connected to the sounding plate 220, thereby driving the sounding plate 220 to vibrate.

[0201] At least a portion of the vibration frequency band of the first voice coil 410 is different from the vibration frequency band of the second voice coil 420. For example, at least a portion of the vibration frequency band of the first voice coil 410 is lower than the frequency of the vibration frequency band of the second voice coil 420.

[0202] In some embodiments, the diameter of the second voice coil 420 is smaller than that of the first voice coil 410, allowing it to be located within the area enclosed by the first voice coil 410. This allows the first voice coil 410 to be larger in size and mass, enabling it to achieve a lower-frequency response under the action of the magnetic component 430. The second voice coil 420, however, is smaller in size and mass, enabling it to achieve a higher-frequency response under the action of the magnetic component 430. Thus, by providing two voice coils, the actuator 400 achieves full-band sound generation.

[0203] In some embodiments, the exciter 400 further includes a vibration connector 440, and the first voice coil 410 and the second voice coil 420 are both connected to the vibration connector 440, and the vibration connector 440 is connected to the sound plate 220. In this way, the vibration force of the first voice coil 410 and the second voice coil 420 is transmitted to the sound plate 220 through the vibration connector 440, and the vibration connector 440 can also improve the structural strength of the first voice coil 410 and the second voice coil 420.

[0204] In some embodiments, the actuator 400 further includes a damper 460. The inner side of the damper 460 is connected to the outer wall of the first voice coil 410, and the outer side of the damper 460 can be connected to the bracket 450. The damper 460 elastically deforms along the axial direction of the first voice coil 410 and restricts the radial movement of the first voice coil 410, ensuring that the first voice coil 410 does not collide with the magnetic component 430.

[0205] In some embodiments, the actuator 400 has a first magnetic air gap, and at least a portion of the first voice coil 410 is located within the first magnetic air gap.

[0206] In some embodiments, the actuator 400 has a second magnetic air gap, and at least a portion of the second voice coil 420 is located within the second magnetic air gap.

[0207] In this way, both the first voice coil 410 and the second voice coil 420 are located within the magnetic field formed by the magnetic component 430 .

[0208] In some embodiments, the magnetic component 430 includes a magnet 433 that provides a magnetic field.

[0209] The magnetic component 430 includes a second magnetic conductive member 431, which is connected to a magnet 433. The second magnetic conductive member 431 and the magnet 433 together define a first magnetic air gap and a second magnetic air gap.

[0210] Exemplarily, multiple magnets 433 are provided, wherein at least two annular magnets 433 of different diameters are nested, with a radial gap between the two magnets 433. A second magnetic conductive member 431 is provided at one axial end of the magnets 433, and a through hole is provided in the second magnetic conductive member 431 at a position opposite the gap. This through hole and the gap between the two magnets 433 together form a magnetic air gap.

[0211] The second magnetic conductive member 431 is used to guide the magnetic field formed by the magnet 433 into the first magnetic air gap and the second magnetic air gap, thereby forming a stable magnetic field in the magnetic air gap, and then the first voice coil 410 and the second voice coil 420 are located in the stable magnetic field and vibrate along their own axis.

[0212] In some embodiments, the exciter 400 also includes a first elastic connecting member 470, the inner side of the first elastic connecting member 470 is connected to the outer wall of the second magnetic conductive member 431, and the outer side of the first elastic connecting member 470 is fixedly connected to the bracket 450 to provide elastic support for the second magnetic conductive member 431.

[0213] The first magnetic conductive member 432 is fixed to a side of the magnet 433 facing away from the second magnetic conductive member 431 . The first magnetic conductive member 432 and the second magnetic conductive member 431 work together to guide the magnetic field generated by the magnet 433 into the magnetic air gap.

[0214] In some embodiments, the exciter 400 also includes a second elastic connecting member 480, the outer side of the second elastic connecting member 480 is connected to the bracket 450, and the inner side of the second elastic connecting member 480 is connected to the first magnetic conductive member 432, thereby providing elastic support for the first magnetic conductive member 432.

[0215] In some embodiments, the magnetic component 430 further includes a first magnetic conductive member 432. The first magnetic conductive member 432 is located on a side of the first voice coil 410 facing away from the vibration connector 440. The first magnetic conductive member 432 is axially opposed to the first magnetic air gap along the first voice coil 410. The first magnetic conductive member 432 is axially opposed to the second magnetic air gap along the second voice coil 420.

[0216] It can be understood that the first magnetic conductive member 432 closes the first and second magnetic air gaps at the ends facing away from the vibration connector 440 to reduce magnetic leakage. For example, the first magnetic conductive member 432 is plate-shaped, which can simultaneously close the first and second magnetic air gaps and reduce the axial size of the actuator 400.

[0217] In some embodiments of this application, continue to refer to Figure 10 The first magnetic conductive member 432 is located on the side of the back plate 500 away from the sound plate 220, and a heat dissipation hole is provided on the first magnetic conductive member 432, which is opposite to the voice coil to improve the heat dissipation effect of the exciter 400 and reduce the heat conduction forward to the display panel 100.

[0218] The heat dissipation holes can be round holes, which are easy to process.

[0219] The first magnetic conductive member 432 is provided with a first heat dissipation hole 4321 , and the first heat dissipation hole 4321 is configured to transfer the heat of the actuator 400 to the outside.

[0220] The first heat dissipation holes 4321 are opposite to the first voice coil 410 along the axial direction of the first voice coil 410 , so that heat generated by the first voice coil 410 is dissipated outward through the first heat dissipation holes 4321 .

[0221] The first magnetic conductive member 432 is provided with a second heat dissipation hole 4322 , and the second heat dissipation hole 4322 is configured to transfer the heat of the actuator 400 to the outside.

[0222] The second heat dissipation hole 4322 is closer to the center of the first voice coil 410 than the first heat dissipation hole 4321. Thus, a first distance exists between the center of the second heat dissipation hole 4322 and the center of the first voice coil 410, and a second distance exists between the center of the first heat dissipation hole 4321 and the center of the first voice coil 410. The first distance is smaller than the first distance. The center of the first voice coil 410 is the projection of the central axis of the first voice coil 410 onto the first magnetic conductive member 432.

[0223] In this way, heat dissipation structures of different ranges are formed on the first magnetic conductive member 432 , which is beneficial to improving the heat dissipation effect.

[0224] In some embodiments, the second heat dissipation holes 4322 are opposite to the second voice coil 420 along the axial direction of the second voice coil 420 , so that the heat generated by the second voice coil 420 is dissipated outward through the second heat dissipation holes 4322 .

[0225] It should be noted that the actuator 400 generates heat from various sources. For example, when the first voice coil 410 and the second voice coil 420 are energized, they generate heat due to resistance. Another example is the hysteresis loss generated by the magnetic conductive element in a magnetic field, which is converted into heat. Of the various heat sources in the actuator 400, the heat generated by the voice coils is the greatest.

[0226] To this end, in some embodiments of the present application, by arranging the first heat dissipation hole 4321 opposite to the first voice coil 410 and the second heat dissipation hole 4322 opposite to the second voice coil 420 , the heat dissipation efficiency of the actuator 400 can be improved.

[0227] Combine Figure 11 In some embodiments, a plurality of first heat dissipation holes 4321 are provided, and the plurality of first heat dissipation holes 4321 are arranged at intervals along the circumference of the first voice coil 410 to improve the heat dissipation effect.

[0228] The plurality of first heat dissipation holes 4321 are evenly spaced along the circumference of the first voice coil 410 , thereby ensuring uniformity of the magnetic field along the circumference of the first voice coil 410 .

[0229] In some embodiments, a plurality of second heat dissipation holes 4322 are provided, and the plurality of second heat dissipation holes 4322 are arranged at intervals along the circumference of the second voice coil 420 to improve heat dissipation effect.

[0230] The plurality of second heat dissipation holes 4322 are evenly spaced along the circumference of the second voice coil 420 to ensure uniformity of the magnetic field along the circumference of the second voice coil 420 .

[0231] In some embodiments, the first heat dissipation hole 4321 is a circular hole, and the diameter of the first heat dissipation hole 4321 is larger than the diameter of the conductive cable of the first voice coil 410 .

[0232] The first voice coil 410 may include a first voice coil bobbin 411 and a first conductive cable 412 wound around the first voice coil bobbin 411 . The diameter of the first heat dissipation hole 4321 is larger than the diameter of the first conductive cable 412 .

[0233] With this arrangement, the portion of the first voice coil 410 that is axially opposite to the first heat dissipation hole 4321 along the first voice coil 410 is projected onto the first magnetic conductive member 432 and is located within the first heat dissipation hole 4321 . The heat of the first voice coil 410 can be dissipated outward through the first heat dissipation hole 4321 , thereby improving the heat dissipation effect.

[0234] The diameter of the first heat dissipation hole 4321 is less than twice the diameter of the first conductive cable 412. This arrangement ensures the heat dissipation effect of the first heat dissipation hole 4321 while reducing the risk of excessive magnetic leakage and acoustic effects caused by the first heat dissipation hole 4321, and also reduces the risk of the first heat dissipation hole 4321 being too large and affecting the structural strength of the first magnetic conductive member 432.

[0235] In some embodiments, the second heat dissipation hole 4322 is a circular hole, and the diameter of the second heat dissipation hole 4322 is larger than the diameter of the conductive cable of the second voice coil 420 .

[0236] The second voice coil 420 includes a second voice coil bobbin 421 and a second conductive cable 422 wound around the second voice coil bobbin 421 . The diameter of the second heat dissipation hole 4322 is larger than the diameter of the second conductive cable 422 .

[0237] With this arrangement, the projection of the axially opposite portion of the second voice coil 420 and the second heat dissipation hole 4322 on the first magnetic conductive member 432 is located inside the second heat dissipation hole 4322 , and the heat of the second voice coil 420 can be dissipated outward through the second heat dissipation hole 4322 .

[0238] The diameter of the second heat dissipation hole 4322 is less than twice the diameter of the second conductive cable 422. This arrangement ensures the heat dissipation effect of the second heat dissipation hole 4322 while reducing the risk of excessive magnetic leakage and acoustic effects caused by the second heat dissipation hole 4322 being too large, and also reduces the risk of the second heat dissipation hole 4322 being too large and affecting the structural strength of the first magnetic conductive member 432.

[0239] Combine Figure 12 In some embodiments, the display device further includes a rear housing 600, which is located on a side of the driver 400 facing away from the light board 210, that is, the rear housing 600 is disposed on the rear side of the driver 400. Figure 12 In the embodiment, the rear shell 600 is located below the back plate 500 .

[0240] A rear cavity 602 is defined between the rear housing 600 and the back panel 500. The rear housing 600 may serve as the exterior housing of the display device. The display device's controller, electrical connections, and other components may be housed within the rear cavity 602 to simplify the display device's appearance. The rear housing 600 may be made of plastic, metal, or the like.

[0241] In some embodiments, the display device further includes a second heat dissipation structure 610 disposed in the rear cavity 602. The second heat dissipation structure 610 contacts the rear housing 600 and the actuator 400 respectively to transfer heat from the actuator 400 to the rear housing 600.

[0242] In some embodiments, the second heat dissipation structure 610 includes an elastic portion that is connected to the rear housing 600 or the first magnetic conductive member 432 of the actuator 400, thereby providing an elastic connection between the actuator 400 and the rear housing 600. The elastic portion elastically deforms to adapt to changes in the distance between the actuator 400 and the rear housing 600 when the actuator 400 vibrates.

[0243] In some embodiments, combined Figure 13 The second heat dissipation structure 610 includes a third elastic heat conductive member 611, which is bonded to at least one of the rear shell 600 and the first magnetic conductive member 432. The connection is stable and is conducive to conducting the heat of the heat dissipation hole to the rear shell 600.

[0244] In some embodiments, the third elastic heat-conducting member 611 is provided with a heat-conducting hole 6111 opposite to the heat-dissipating hole, and a plurality of heat-conducting holes 6111 are provided.

[0245] The heat conducting hole 6111 is opposite to the first heat dissipation hole 4321 , so that the heat generated by the first voice coil 410 is transferred outward through the first heat dissipation hole 4321 and the heat conducting hole 6111 , thereby improving the heat dissipation effect.

[0246] The heat conducting hole 6111 is opposite to the second heat dissipating hole 4322 , so that the heat generated by the second voice coil 420 is transferred outward through the second heat dissipating hole 4322 and the heat conducting hole 6111 .

[0247] The third elastic heat-conducting member 611 is elastic. When the actuator 400 vibrates, the third elastic heat-conducting member 611 can be elastically deformed to avoid abnormal noise caused by hard contact between the actuator 400 and other components of the second heat dissipation structure 610.

[0248] In some embodiments, the second heat dissipation structure 610 further includes a heat dissipation fin 612 , one side of which is connected to the third elastic heat conductive member 611 . The heat dissipation fin 612 increases the heat dissipation area, thereby improving the heat dissipation effect.

[0249] The rear housing 600 is provided with a heat dissipation port 601 opposite to the heat dissipation fins 612 , which facilitates heat conduction out of the rear housing 600 and further improves the heat dissipation effect.

[0250] Of course, a grille 620 is provided inside the heat dissipation port 601 to shield the internal structure and also to block dust.

[0251] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0252] For ease of explanation, the above description has been made with reference to specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments are selected and described to better explain the principles and practical applications, so that those skilled in the art can better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that: include: A display panel (100) having a first surface (101) and a display surface (102) opposite to each other along a thickness direction thereof, wherein the display surface (102) is located above the first surface (101); a light board (210), located below the first surface (101); a sound-generating plate (220), disposed below the light plate (210) and configured to transmit vibration toward the light plate (210); A back plate (500) is disposed below the sounding plate (220), and a receiving space (502) is provided between the back plate (500) and the sounding plate (220); An exciter (400) is partially located in the accommodating space (502); the exciter (400) is connected to the sound-generating plate (220) and the back plate (500) respectively; the exciter (400) is configured to drive the sound-generating plate (220), the light board (210) and the display panel (100) to vibrate and emit sound; a first elastic heat-conducting member (510) disposed in the accommodation space (502) and bonded to at least one of the back plate (500) and the sound-generating plate (220); The first elastic heat-conducting member (510) is configured to transfer the heat transferred from the light board (210) to the sound-generating board (220) to the back board (500).

2. The display device according to claim 1, wherein A plurality of the first elastic heat-conducting members (510) are provided, and the plurality of the first elastic heat-conducting members (510) are arranged at intervals on a circumference with the actuator (400) as the center.

3. The display device according to claim 1, wherein The first elastic heat-conducting member (510) is ring-shaped, and the actuator (400) is located at the center of the first elastic heat-conducting member (510).

4. The display device according to any one of claims 1 to 3, characterized in that: A first heat dissipation structure (530) is provided on the back plate (500), and the first heat dissipation structure (530) and the first elastic heat conductive member (510) are opposite to each other along the thickness direction of the display panel (100).

5. The display device according to claim 4, wherein: The first heat dissipation structure (530) comprises a through hole provided on the back plate (500).

6. The display device according to claim 4, wherein: The first heat dissipation structure (530) comprises a heat sink arranged on the back plate (500).

7. The display device according to any one of claims 1 to 3 or 5 or 6, characterized in that: The display device comprises a plurality of the light panels (210), and the plurality of light panels (210) are spliced ​​in the same plane; A portion of the light panel (210) and the back panel (500) have an accommodation space (503) along the thickness direction of the display panel (100); The display device further comprises: a second elastic heat-conducting member (520) disposed in the accommodating space (503); the second elastic heat-conducting member (520) is configured to transfer heat from the lamp panel (210) to the back panel (500).

8. The display device according to claim 7, wherein: The second elastic heat-conducting member (520) is bonded to at least one of the lamp panel (210) and the back panel (500).

9. The display device according to claim 7, wherein: The dimension of the second elastic heat-conducting member (520) along the thickness direction of the display panel (100) is greater than the dimension of the first elastic heat-conducting member (510) along the thickness direction of the display panel (100).

10. A display device, characterized in that: include: A display panel (100) having a first surface (101) and a display surface (102) opposite to each other along a thickness direction thereof, wherein the display surface (102) is located above the first surface (101); a light board (210), located below the first surface (101); a sound-generating plate (220), disposed below the light plate (210) and configured to transmit vibration toward the light plate (210); An exciter (400) is connected to the sounding board (220) and is configured to drive the sounding board (220), the light board (210) and the display panel (100) to vibrate and emit sound; the exciter (400) comprises: A first magnetic conductive member (432), wherein the first magnetic conductive member (432) is provided with a first heat dissipation hole (4321); The first heat dissipation hole (4321) is constructed to transfer the heat of the actuator (400) to the outside.

11. The display device according to claim 10, wherein: The actuator (400) has a first magnetic air gap; The actuator (400) further comprises: a first voice coil (410), at least partially located in the first magnetic air gap and connected to the sounding plate (220); The first magnetic conductive member (432) and the first magnetic air gap are opposite to each other along the axial direction of the first voice coil (410), and the first heat dissipation hole (4321) is opposite to the first voice coil (410).

12. The display device according to claim 11, wherein A plurality of the first heat dissipation holes (4321) are provided, and the plurality of the first heat dissipation holes (4321) are arranged at intervals along the circumference of the first voice coil (410).

13. The display device according to claim 11, wherein The first heat dissipation hole (4321) is a circular hole, and the diameter of the first heat dissipation hole (4321) is larger than the diameter of the conductive cable of the first voice coil (410).

14. The display device according to claim 13, wherein: The diameter of the first heat dissipation hole (4321) is less than twice the diameter of the conductive cable of the first voice coil (410).

15. The display device according to claim 11, wherein The first magnetic conductive member (432) is further provided with a second heat dissipation hole (4322), and the second heat dissipation hole (4322) is configured to transfer heat of the actuator (400) to the outside; The second heat dissipation hole (4322) is closer to the center of the first voice coil (410) relative to the first heat dissipation hole (4321).

16. The display device according to claim 15, wherein: The actuator (400) further comprises a second magnetic air gap; The actuator (400) further comprises: a second voice coil (420) at least partially located in the second magnetic air gap and connected to the sounding plate (220); a diameter of the second voice coil (420) is smaller than a diameter of the first voice coil (410), and the second voice coil (420) is located inside the first voice coil (410); The first magnetic conductive member (432) and the second magnetic air gap are opposite to each other along the axial direction of the second voice coil (420), and the second heat dissipation hole (4322) is opposite to the second voice coil (420).

17. The display device according to claim 16, wherein: A plurality of the second heat dissipation holes (4322) are provided, and the plurality of the second heat dissipation holes (4322) are arranged at intervals along the circumference of the second voice coil (420).

18. The display device according to claim 16, wherein The second heat dissipation hole (4322) is a circular hole, and the diameter of the second heat dissipation hole (4322) is larger than the diameter of the conductive cable of the second voice coil (420).

19. The display device according to claim 18, wherein The diameter of the second heat dissipation hole (4322) is less than twice the diameter of the conductive cable of the second voice coil (420).

20. The display device according to any one of claims 10 to 19, characterized in that: The display device further includes: A back plate (500) is provided below the sounding plate (220), and a receiving space (502) is provided between the back plate (500) and the sounding plate (220); a through hole (501) is provided on the back plate (500); Part of the actuator (400) passes through the through hole (501), so that the part of the actuator (400) is located in the accommodation space (502); The first magnetic conductive member (432) is located outside the accommodating space (502).

21. The display device according to claim 20, wherein The display device further includes: A rear shell (600) is located below the back plate (500), with a rear cavity (602) being defined between the rear shell (600) and the back plate (500); The display device further includes: A second heat dissipation structure (610) is arranged in the rear cavity (602); the second heat dissipation structure (610) is in contact with the first magnetic conductive member (432) and the rear shell (600), respectively, and the second heat dissipation structure (610) is configured to transfer heat from the exciter (400) to the rear shell (600).

22. The display device according to claim 21, wherein The second heat dissipation structure (610) comprises: A third elastic heat-conducting component (611), wherein the third elastic heat-conducting component (611) is bonded to the first magnetic conductive component (432).

23. The display device according to claim 22, wherein: The third elastic heat-conducting member (611) is provided with a plurality of heat-conducting holes (6111), and the plurality of heat-conducting holes (6111) are opposite to the first heat dissipation holes (4321).

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