CN114500896A

CN114500896A - Display device

Info

Publication number: CN114500896A
Application number: CN202011257669.0A
Authority: CN
Inventors: 周辉
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2022-05-13
Anticipated expiration: 2040-11-11
Also published as: CN114500896B

Abstract

The application provides a display device, and belongs to the technical field of display. The display device may include: a display screen, a sound board, a frame assembly and an exciter. The thickness of the first elastic supporting part between the side surface of the sound board and the frame body in the frame component in the width direction of the sound board is smaller than that of the sound board. And this first elastic support portion, second elastic support portion and third elastic support portion cut off each other, so, when this display device hangs, can avoid the higher covering of hardness in the acoustic board under the action of gravity, in the embedding first elastic support portion, the effectual probability that has reduced the edge of acoustic board and fix in first elastic support portion, when the acoustic board vibrates under the drive of exciter, the amplitude that the acoustic board vibrated at the edge can not receive the restriction, and then the sound production effect of this display device has been improved.

Description

Display device

Technical Field

The application relates to the technical field of display, in particular to a display device.

Background

The display device generally includes a display portion and a sound generating portion, the display portion in the display device can display a picture, and the sound generating portion in the display device can generate sound while the display portion displays the picture, so that functions such as video playing can be realized. However, the sound emission effect of the sound emission part in the current display device is poor.

Disclosure of Invention

The embodiment of the application provides a display device, can solve the relatively poor problem of display device's sound production effect among the prior art, display device includes:

a display screen having a display surface; the sounding board is positioned on one side of the display screen, which is far away from the display surface; a frame assembly connected to an edge of the sound board; and the exciter is connected with one surface of the sound-emitting plate, which is far away from the display screen, and drives the sound-emitting plate to vibrate to emit sound.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

the display device may include: a display screen, a sound board, a frame assembly and an exciter. The thickness of the first elastic supporting part between the side surface of the sound board and the frame body in the frame component in the width direction of the sound board is smaller than that of the sound board. And this first elastic support portion, second elastic support portion and third elastic support portion cut off each other, so, when this display device hangs, can avoid the higher covering of hardness in the acoustic board under the action of gravity, in the embedding first elastic support portion, the effectual probability that has reduced the edge of acoustic board and fix in first elastic support portion, when the acoustic board vibrates under the drive of exciter, the amplitude that the acoustic board vibrated at the edge can not receive the restriction, and then the sound production effect of this display device has been improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic configuration diagram of a display device having a speaker;

fig. 2 is a schematic view of another display device having a speaker;

FIG. 3 is a schematic view of a display device having an actuator;

fig. 4 is a schematic view of a structure of a sound emitting portion in a display device having a sound screen;

fig. 5 is a schematic structural diagram of a display device provided in an embodiment of the present application;

fig. 6 is a schematic structural view of a sound-emitting panel provided in the present application;

FIG. 7 is a schematic structural view of an interlayer provided herein;

FIG. 8 is a schematic view of the fit of the skin and the intermediate layer of the sound board provided herein;

FIG. 9 is a schematic cross-sectional view of the middle layer of the sound board provided herein;

FIG. 10 is a schematic structural view of a skin of a sound board provided herein;

fig. 11 is a schematic diagram illustrating an amplitude attenuation law when the display device provided by the present application conducts bending waves;

FIG. 12 is a schematic view of a frame assembly coupled to a bezel according to an embodiment of the present application;

FIG. 13 is a cross-sectional view of a frame provided in accordance with an embodiment of the present application;

FIG. 14 is a schematic view of the sound producing suspension of FIG. 12 in operation;

fig. 15 is a schematic position diagram of another first elastic supporting portion in the clamping groove according to the embodiment of the present application;

fig. 16 is a schematic view illustrating a position of a further first elastic supporting portion in the clamping groove according to an embodiment of the present application;

fig. 17 is a front view of a sound board and frame connection provided by an embodiment of the present application;

FIG. 18 is a front view of another sound board and frame connection provided by embodiments of the present application;

fig. 19 is a schematic structural diagram of a projection screen according to an embodiment of the present application;

fig. 20 is a schematic view of a positional relationship between the first, second, and third elastic support portions and the sound-emitting panel in the projection screen shown in fig. 19.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a display device with a speaker, where the display device shown in fig. 1 takes a television 11 as an example, and the television 11 includes: a display screen 12 and a speaker 13; the display screen is a display part in the display device, and the loudspeaker is a sound-producing part in the display device. The speaker 13 is disposed behind the display screen 12 inside the television set 11. The speakers 13 are generally provided on the left and right sides of the direction in which the user views the display screen 12, and provide left and right channel sounds.

With the development of the demand of the users for the display devices in the market towards the direction of thinning and the continuous progress of the electronic technology, more and more key components such as the display screens and the base frames in the display devices can be realized with a thinner thickness, so that the overall thickness of the electronic device is reduced. Therefore, in addition to providing some devices for displaying inside the television set 11 shown in fig. 1, the space reserved for the speaker 13 becomes smaller and smaller, and the manufacturers of the television set 11 can only reduce the functions of the subwoofer and the like of the speaker 13 to reduce the space occupied by the speaker 13 in the television set 11. The loudspeaker 13 installed in the television 11 can only meet the common playing function, and can not realize more sound effect, thereby reducing the playing performance of the loudspeaker 13.

In other display devices, in order to pursue better audio and video effects, an independent projection screen is usually provided, and an independent sound box is provided as a speaker, for example, fig. 2 is a schematic structural diagram of another display device with a speaker, in which a television box 21 can project light beams onto a display screen 22 for a user to view video pictures, and can also provide sound signals to an external speaker 23 connected to the television box, so that the speaker 23 plays audio. In the electronic apparatus shown in fig. 2, since the speaker 23 needs to be independently disposed, the speaker 23 can achieve more sound effects through a larger volume, and accordingly, the speaker 23 of the display apparatus needs to occupy more external space.

In the display device shown in fig. 1 and fig. 2, the speakers have a problem of location limitation, and the sound played by the speakers comes from the display screen regardless of the speakers built in the display device or the speakers externally connected to the display device, and thus the display device does not have a good audiovisual playback effect.

Thus, some electronic devices in the art have "sound screens," e.g., FIG. 3 is a schematic diagram of a display device having an actuator, which may be an electromagnetic, piezoelectric, magnetostrictive, or any other type and configuration of transducer. The multiple actuators disposed on the rear side of the display screen in the display device shown in fig. 3 can individually actuate the entire display screen to emit sound. For example, driver 141 provides a left channel sound signal, driver 142 provides a right channel sound signal, driver 143 provides a center channel sound signal, and so on. Under the action of the exciter, the display screen of the television set 11 is sounded by bending waves emitted by modal resonance. I.e. the display screen of the television set 11 can be used both for display and for sound production instead of loudspeakers. Therefore, in the display device such as the television 11, it is not necessary to provide a mounting position for the speaker, but the speaker can be replaced by a corresponding number of exciters, so that the display device can provide a stronger sound effect while being designed to be thinner and lighter.

For example, referring to fig. 4, fig. 4 is a schematic structural diagram of a sound generating portion in a display device having a sound generating screen. The sound emitting portion may include: sound board 01, frame 02, foam 03 and an exciter (not shown in fig. 4). The frame body 02 is provided with a clamping groove 021, the edge of the sound generating plate 01 is usually wrapped with foam 03, and the sound generating plate 01 with the edge wrapped with the foam 03 can be assembled in the clamping groove 021 in the frame body 02. The exciter may be adhered to one surface of the sound-emitting panel 01, and the exciter may vibrate with the sound-emitting panel 01 to emit sound. The sound board 01 generally includes: a lower durometer middle layer 011, and higher durometer skins 012 on either side of the middle layer 011.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a display device according to an embodiment of the present disclosure, where the display device may include:

a display screen 100, a sound board 200, a frame assembly 300, and an exciter 400.

In the embodiment of the present application, the sound-emitting panel 200, the frame assembly 300, and the exciter 400 are used to constitute a sound-emitting portion in the display device.

The display screen 100 has a display surface 101 and the sound generating portion in the display device is located on a side away from the display surface 101 of the display screen 100.

In the embodiment of the present application, the sound board 200 may be disposed generally parallel to the display surface 101 of the display screen 100, and a side of the sound board 200 away from the display screen 100 may be connected to the exciter 400. The exciter 400 may vibrate the sound-emitting panel 200 to emit sound.

In the embodiment of the present application, the display screen 100 in the display device 000 may include: a liquid crystal display screen, an organic light emitting diode display screen, or a projection screen. When the display panel 100 includes a liquid crystal display panel or an organic light emitting diode display panel, the sound-emitting panel 200 is located on a side of the display panel 100 away from the display surface thereof, and the display surface of the display panel 100 can directly display a picture. When the display screen 100 includes a projection screen, the sound-emitting panel 200 is connected to a side of the display screen 100 away from the display surface, and the display device 000 may further include a projector that may project a picture onto the display surface of the display screen 100. In this manner, the exciter attached to the side of the sound-emitting panel 200 remote from the display surface of the display screen 100 can be brought into contact with the sound-emitting panel 200. The exciter may vibrate the sound-emitting panel 200 to emit sound, thereby allowing the display device 000 to emit sound.

Illustratively, the actuators may be electrically connected to a display device 000, and the display device 000 may, in operation, send acoustic electrical signals to the actuators. After receiving the sound electric signal, the exciter can reciprocate based on the sound electric signal, so that the whole surface of the sound generating plate 200 can be driven to vibrate together, and the sound generating plate 200 can generate sound.

In some implementations, the sound board 200 can include: a plate-shaped intermediate layer, and skins located on both sides of the intermediate layer. For example, fig. 6 is a schematic structural diagram of the sound-emitting panel provided in the present application, and as shown in fig. 6, one skin 202 is disposed on each of the first side and the second side of the intermediate layer 201, and the surface areas of the skin 202 and the intermediate layer 201 are the same, or the skin 202 may cover at least a portion of the intermediate layer 201.

Exemplarily, fig. 7 is a schematic structural diagram of an intermediate layer provided in the present application, and as shown in fig. 7, the intermediate layer 201 of the sound-generating plate 200 provided in this embodiment is formed by connecting a plurality of honeycomb cores 2011 arranged in a hexagonal shape, except for the honeycomb cores 2011 located around the structure, the side surfaces corresponding to six sides of each honeycomb core 2011 are respectively connected to the corresponding side surfaces of the other six honeycomb cores 2011.

Fig. 8 is a schematic view of a bonding structure between a middle layer of a sound-emitting panel and a skin, and as shown in fig. 8, in the sound-emitting panel 200, a cross section of a honeycomb core 2011 included in the middle layer 201 is perpendicular to the skin 202. In some implementations, the interlayer 201 including the honeycomb core 2011 provided herein is parallel to the y-direction by disposing two parallel sides of a hexagonal honeycomb core wall, and there is no parallel side of the honeycomb core wall in the x-direction, so that the sound board has different conductive properties in the x-direction and the y-direction. Specifically, the conduction performance difference in different directions is realized by adjusting the hexagonal stretch ratio of the section of the honeycomb core.

Exemplarily, fig. 9 is a schematic cross-sectional structure of an intermediate layer of the sound-emitting panel provided by the present application. As shown in FIG. 9, the hexagonal cross-section of the honeycomb core has a stretch ratio of d/L in the x-y direction. Wherein, the first direction is the y direction in the figure, the second direction is the x direction in the figure; d is the unit length of each honeycomb core in the x direction when a plurality of hexagonal honeycomb cores are arranged in sequence, and the unit length d is: the hexagonal honeycomb cores are sequentially arranged and then are arranged in the minimum length unit in the x direction, namely the hexagonal honeycomb cores are repeatedly arranged in the x direction according to the rule of unit length d; in fig. 10, the unit length d is the distance d between the hexagonal side (c) perpendicular to the x circumference and the side (c); l is the unit length of each honeycomb core in the y direction when a plurality of hexagonal honeycomb cores are arranged in sequence, and the unit length L refers to: the hexagonal honeycomb cores are sequentially arranged and then arranged in the minimum length unit in the y direction, namely the hexagonal honeycomb cores are repeatedly arranged in the y direction according to the rule of the unit length L; in fig. 10, the unit length L is the sum of the distances in the y direction of the hexagonal sides (i.e., c, and c). Since the stretch ratio in the x direction is 0.58:1 for the standard hexagonal shape. In this embodiment, in order to make the sound-emitting panel different in the conduction performance in different directions, all the honeycomb cores in the intermediate layer of the sound-emitting panel may be stretched at a preset stretching ratio in the x direction of the cross-sectional hexagon so that the stretching ratio of the hexagonal interface of each honeycomb core is less than a preset threshold of 0.58: 1. Wherein, when the stretching ratio d/L is smaller, it means that the hexagonal interface of the honeycomb core shown in fig. 9 has a denser parallel wall distribution in the y direction, and the rigidity is stronger, so that the bending wave is easily conducted by vibration; the hexagonal honeycomb core walls have a larger included angle and a weaker rigidity in the x direction, and thus easily absorb the conduction of bending wave vibration.

Therefore, the intermediate layer shown in fig. 9 realizes that the sound board has different conduction performances in the x direction and the y direction by setting the honeycomb core stretch ratio, and further, the sound board has different amplitude attenuation laws in the x direction and the y direction when conducting bending waves. For example, in the embodiment shown in fig. 9, when the stretch ratio in the y direction is less than 0.58:1, the conduction performance of the sound-emitting panel in the x direction for bending waves is weaker than that in the y direction, which can cause the magnitude of the amplitude attenuation of bending waves in the x direction to be larger than that in the y direction when the sound-emitting panel provided with the intermediate layer shown in fig. 9 transmits bending waves.

Meanwhile, because the skins are attached to two sides of the middle layer, in order to match the conduction performance of the middle layer in the x-y direction, the fibers of the skins are correspondingly arranged in the middle layer provided by the embodiment. For example, fig. 10 is a schematic structural view of a skin of the sound-emitting panel provided by the present application, such as a schematic structural view of a skin surface fiber structure shown in fig. 10, and such as a skin structure shown in fig. 10 is an interwoven fiber structure in x-y directions, wherein the density of fibers parallel to the y direction and perpendicular to the x direction is greater than the density of fibers parallel to the x direction and perpendicular to the y direction. Alternatively, in another skin structure provided in this embodiment, the fibers parallel to the x direction and perpendicular to the y direction may not be provided, that is, the skin is a unidirectional fiber structure, and the directions of all the fibers are provided parallel to the y direction and perpendicular to the x direction.

Therefore, the structure of the skin shown in fig. 10 can be matched with the middle layer in conduction, so that the amplitude attenuation laws of the sound board in the x direction and the y direction are different when the sound board conducts bending waves. Illustratively, in the embodiment shown in FIG. 10, the fibers of the skin have a denser distribution of parallel fibers in the y-direction, which is stiffer and therefore more susceptible to bending waves by vibration; and the fibers of the skin are sparsely distributed in the x direction parallel to the fibers, and the rigidity of the skin is weaker, so that bending waves are not easy to conduct through vibration. Therefore, when the skin acoustic panel shown in fig. 10 is provided with the intermediate layer shown in fig. 9, the amplitude attenuation of the bending wave in the x direction can be made larger than the amplitude attenuation of the bending wave in the y direction when the bending wave is transmitted.

In some implementations, in the above embodiments, the material of the honeycomb core may be paper, aramid, metal, or other composite material. In some implementations, in the above embodiments, the material of the skin includes, but is not limited to, glass fiber, carbon fiber, glass-carbon mixed fiber, plastic, lightweight aluminum, and the like. More illustratively, the first skin and the second skin may be the same or different in thickness. In some implementations, the skin has a thickness in a range of: 0.1-0.5 mm; or, preferably, the thickness of the skin ranges from 0.1 mm to 0.18 mm.

More exemplarily, fig. 11 is a schematic diagram of an amplitude attenuation law when the display device provided by the present application conducts bending waves, and fig. 11 shows amplitude attenuation magnitudes of the sound board in various directions under excitation of the exciter. In the x-y direction, when the point P (0,0) where x is 0 and y is 0 in the drawing is a position where the acoustic panel 200 is attached to the exciter 400, the bending wave generated by the acoustic panel 200 by the exciter 400 spreads all around the point P, and the amplitude of the acoustic substrate at the point P is the maximum. When the amplitude at the point P at a certain time is denoted as 100% by D, the amplitude gradually attenuates when the bending wave spreads 360 degrees around the point P in the sound-emitting panel 200, and gradually attenuates from 100% by D to 90% by D and 80% by D … …. Especially for the x direction and the y direction separately, when the bending wave is conducted in the two directions, because the stretching ratio of the honeycomb core of the middle layer is smaller than the preset threshold value and the fiber density of the skin in the y direction is larger than that in the x direction, the amplitude attenuation value and the attenuation speed of the amplitude at the point P in the x direction are larger than those of the amplitude at the point P in the y direction.

In one possible implementation, as shown in fig. 5, a frame assembly 300 in the display device may be connected to an edge of the sound-emitting panel 200.

For example, as shown in fig. 12, fig. 12 is a schematic view illustrating a connection between a frame assembly and a bezel according to an embodiment of the present application. The frame assembly 300 includes: a frame body 301 and a first elastic support portion 302.

For example, please refer to fig. 13, fig. 13 is a cross-sectional view of a frame according to an embodiment of the present application. The frame 301 may be an annular frame matching the shape of the sound-emitting panel 200, and the frame 301 further has an annular engaging groove 301 a. Illustratively, the clip groove 301a has three groove surfaces a, B and C connected in series.

As shown in fig. 12, the first elastic supporting portion 302 can be located in the locking groove 301a, and the frame 301 can be connected to the edge of the sound-emitting board 200 through the first elastic supporting portion 302. And the first elastic support 302 is located between the frame 301 and the side surface of the sound board 200. That is, the first elastic support portion 302 is located between the groove surface a in the catching groove 301a and the side surface in the sound-emitting panel 200.

In one possible implementation, as shown in fig. 12, the frame assembly 300 may further include: a second elastic support 303 and a third elastic support 304. The second elastic support portion 303 and the third elastic support portion 304 can be located in the locking groove 301a of the frame 301, and the frame 301 can be connected to the edge of the sound-emitting panel 200 through the first elastic support portion 302, the second elastic support portion 303 and the third elastic support portion 304.

For example, the second elastic supporting portion 303 may be located between the frame 301 and a surface of the sound-emitting panel 200 close to the display screen 100, that is, the second elastic supporting portion 303 is located between the groove surface B of the clamping groove 301a and a surface of the sound-emitting panel 200 close to the display screen 100. The third elastic supporting portion 304 can be located between the frame 301 and a surface of the sound board 200 away from the display screen 100, that is, the third elastic supporting portion 304 is located between the groove surface C in the clamping groove 301a and a surface of the sound board 200 away from the display screen 100.

In the present application, the thickness of the first elastic support 302 between the side surface of the sound board 200 and the frame 301 in the width direction of the sound board 200 is smaller than the thickness of the sound board 200. And this first elastic support portion 302, second elastic support portion 303 and third elastic support portion 304 separate each other, so, when this display device 000 hangs, can avoid the higher covering 201 of hardness in the acoustic board 200 under the action of gravity, imbed in first elastic support portion 302, the effectual probability that reduces the edge of acoustic board 200 and fix in first elastic support portion 302, when acoustic board 200 vibrates under the drive of exciter, the amplitude that acoustic board 200 vibrates at the edge can not receive the restriction, and then improved this display device 000's vocal effect.

In a possible implementation manner, the sound board 200 may have a rectangular plate shape, and the frame body 301 in the frame assembly 300 may include: four stripe structures corresponding to the four edges of the sound board 200 one to one. The four strip-like structures are connected end to end in sequence to form a rectangular frame body matched with the shape of the sound board 200. For example, any two adjacent strip-shaped structures may be connected by an L-shaped connecting member, and the L-shaped connecting member may be fastened to the strip-shaped structures by screws. The material of the housing 301 in the display device 000 may be a metal material such as an aluminum alloy or a magnesium alloy.

In this case, the second elastic support 303 and the third elastic support 304 in the frame assembly 300 may be both rectangular strip-shaped foams. The length direction of each strip-shaped frame in the frame 301 is the same as the length direction of the second elastic support 303 and the third elastic support 304 between the strip-shaped frame and the sound board 200.

In the embodiment of the present application, as shown in fig. 12, the first elastic support 302 may be a cylindrical foam, and the first elastic support 302 is in contact with the side surfaces of the frame 301 and the sound-emitting panel 200, respectively. In this way, the first elastic support portion 302 can roll between the frame 301 and the sound board 200 following the vibration of the sound board 200, so that the sound board 200 can acquire a larger movement space.

By way of example, the material of the first elastic support 302 may include: ethylene propylene diene monomer. This material has a better resistance to compression.

In order to ensure the compression resistance of the first elastic support portion 302, the diameter of the first elastic support portion 302 should not be too small, and in order to meet the assembling requirement of the sound board 200 and the frame 301, the diameter of the first elastic support portion 302 should not be too large, therefore, the diameter of the first elastic support portion 302 is in the range of: 5 mm to 10 mm, for example, the diameter of the first elastic support 302 may be 7 mm.

The hardness of the first elastic support 302 is less than or equal to 30 degrees.

For example, when the thickness of the sound-emitting panel 200 is 8 mm, the first elastic support 302 may be: the support portion is 7 mm in diameter, 30 degrees in hardness, and made of epdm rubber, and the amount of compression of the first elastic support portion 302 due to the weight of the sound-emitting panel 200 is less than 0.5 mm on average when the sound-emitting panel 200 is at rest. Thus, when the sound board 200 and the frame 301 are assembled, the first elastic support portion 302 is not greatly deformed due to the extrusion of the sound board 200, the sound board 200 is located in the central area of the frame 300, and the first elastic support portion 302 is in a cylindrical foam shape and can move in the clamping groove 301a along with the vibration of the sound board 200.

Thus, the sound-emitting panel 202 can be moved in its thickness direction and not in its length direction and width direction.

In order to allow the sound board 202 to move along the thickness direction thereof, the second elastic portion 303 and the third elastic portion 304 of the sound board 200 may be made of an elastic material having a small elastic coefficient. That is, the elastic coefficients of the second elastic portion 303 and the third elastic portion 304 are both smaller than the elastic coefficient of the first elastic support portion 302.

In this case, referring to fig. 14, fig. 14 is a schematic view of the sound emitting portion suspension shown in fig. 12 in operation. The second elastic support 303 and the third elastic support 304 can provide elastic support, which acts as a spring, to the sound-emitting panel 200 when the sound-emitting panel 200 is vibrated. In this way, the sound-emitting panel 200 is suspended in the middle of the housing 301, and the sound-emitting panel 200 can freely move in the thickness direction (that is, the direction x1 and the direction x 2).

As an example, the sound-emitting panel 200 in the display device 000 has two states of a stationary state and a vibrating state.

When the exciter in the display device 000 is not in operation, the sound-emitting panel 200 is in a stationary state; in the exciter operation state in the display device 000, the sound-emitting panel 200 is in a vibration state.

When the sound-emitting panel 200 is in a rest state, as shown in fig. 12, since the sound-emitting panel 200 is in a rest state, the first elastic support portion 302 may be located at a middle position of the catching groove 301 a. Thus, when the sound board 200 is in a static state, the first elastic support portion 302 can be ensured to be located at the middle position of the groove surface a of the clamping groove 301a in the frame body 301, so that the first elastic support portion 302 between the sound board 200 and the frame body 301 is uniformly stressed, and the fastening performance of connection between the clamping groove 301a and the sound board 200 is ensured.

When the sound-emitting panel 200 in this display device 000 is in a vibrating state, the positional relationship between the first elastic support portion 302 and the click groove 301a has the following two cases:

in the first case, the actuators in the display device 000 are in operation and the actuators can move the sound board 200 in the x1 direction. In this case, as shown in fig. 15, fig. 15 is a schematic diagram of a position of another first elastic support portion in the clamping groove provided in the embodiment of the present application, and since the sound-emitting panel 200 moves to a direction close to the display surface in the display screen 100, the first elastic support portion 302 rolls in a counterclockwise direction in the clamping groove 301a along with the movement of the sound-emitting panel 200, so that the first elastic support portion 302 is located in the clamping groove 301a at a position close to the display surface in the display screen 100.

In the second case, the exciter in the display device 000 is in operation, and the exciter can move the sound-emitting panel 200 in the x2 direction. In this case, as shown in fig. 16, fig. 16 is a schematic diagram of a position of another first elastic support portion in the fastening groove provided in the embodiment of the present application, and since the sound board 200 vibrates in a direction away from the display surface in the display screen 100, the first elastic support portion 302 rolls in a clockwise direction in the fastening groove 301a along with the movement of the sound board 200, and the first elastic support portion 302 is located in the fastening groove 301a at a position away from the display surface in the display screen 100.

Illustratively, as shown in fig. 17 and 18, fig. 17 is a front view of a connection between a sound-emitting panel and a frame provided in an embodiment of the present application, and fig. 18 is a front view of a connection between a sound-emitting panel and a frame provided in an embodiment of the present application. When the sound emitting panel 200 in the display device 000 has a rectangular plate shape, the first elastic support 302 between the frame body 301 and one side surface of the sound emitting panel 200 in the display device 000 may include: at least one cylindrical foam 302 a.

In an exemplary implementation, as shown in fig. 17, the first elastic support 302 between the frame body 301 and one side surface of the sound-emitting panel 200 in the display device 000 may include: a cylindrical foam 302a, and the length direction of the cylindrical foam 302a is the same as the length direction of the side surface in contact with the cylindrical foam.

In another exemplary implementation, as shown in fig. 18, the first elastic support 302 between the frame body 301 and one side surface of the sound-emitting panel 200 in the display device 000 may include: a plurality of cylindrical foam 302a, and the length direction of each cylindrical foam 302a is the same as the length direction of the side surface in contact with it. Illustratively, the plurality of cylindrical foam pieces 302a are uniformly distributed between the frame body 301 and one side surface of the sound-emitting panel 200, for example, the first elastic support 302 between the frame body 301 and the upper side surface of the sound-emitting panel 200 in the display device 000 may include 3 cylindrical foam pieces 302a, and the first elastic support 302 between the frame body 301 and the lower side surface of the sound-emitting panel 200 in the display device 000 may include 4 cylindrical foam pieces 302 a. In this case, the volume of the cylindrical foam 302a in the frame assembly 300 is small, and the material used is small, which effectively reduces the manufacturing cost of the projection screen.

In the embodiment of the present application, in order to prevent the second elastic support 303 and the third elastic support 304 from falling off from the frame 301 during vibration of the sound-emitting panel 200, the second elastic support 303 may be bonded to at least one of the frame 301 and the sound-emitting panel 200, and the third elastic support 304 may be bonded to at least one of the frame 301 and the sound-emitting panel 200.

In the related art, it is necessary to bond a long foam to the edge of the sound board, in the bonding process, the loose bonding condition between the foam and the partial region of the sound board is likely to occur, when the sound board is assembled with the frame body, the foam is likely to fall off, the sound board is in hard contact with the frame body, and the sound board is likely to be damaged in the vibration process. In addition, in recent years, the width of the design at the edge of the frame body is gradually reduced, and when the frame body is connected with the edge of the sound-emitting plate, foam is easily exposed, which affects the appearance of the display device.

In the embodiment of the present application, the third elastic support portion 304 may be bonded to the frame 301 and contact the sound-emitting panel 200. In this case, since the third elastic support portion 304 is bonded to the frame 301 between the surface of the sound board 200 away from the display surface of the display screen 100 and the frame 301, the third elastic support portion 304 can be prevented from falling off during the assembly of the sound board 200 and the frame 301, thereby preventing the sound board 200 and the frame 301 from being in hard contact with each other and reducing the probability of damage to the sound board 200 during vibration. Meanwhile, the third elastic supporting part 304 is bonded on the frame body 301, so that the third elastic supporting part 304 can be completely wrapped by the edge of the frame body 301, the situation that the third elastic supporting part 304 is exposed is avoided, and the attractiveness of the display device 000 is improved.

In the present application, when the third elastic support portion 304 is bonded to the frame 301, the second elastic support portion 303 may be bonded to the sound-emitting panel 200 and may be in contact with the frame 301 in order to facilitate the connection of the frame 301 to the edge of the sound-emitting panel 200 through the engaging groove 301 a. Thus, when the second elastic support portion 303 and the third elastic support portion 304 are both bonded to the frame 301 and the frame 301 is connected to the edge of the sound-emitting panel 200 through the clamping groove 301a, the sound-emitting panel 200 generates an upward acting force on the second elastic support portion 303 and the third elastic support portion 304, so that the second elastic support portion 303 and the third elastic support portion 304 fall off from the frame 301, and the sound-emitting panel 200 and the frame 301 are in hard contact with each other, thereby reducing the probability of damage to the sound-emitting panel 200 during the vibration of the sound-emitting panel 200.

Optionally, the second elastic supporting portion 303 and the third elastic supporting portion 304 may be a buffering damping single-sided tape made of materials such as foam or sponge.

As for the structures of the second elastic support portion 303 and the third elastic support portion 304, the embodiments of the present application are schematically described by taking the following two cases as examples:

in the first case, the second and third

elastic supports

303 and 304 may include: the shock attenuation bubble is cotton to and be located the double faced adhesive tape of this shock attenuation bubble cotton one side.

In the second case, the second elastic support 303 and the third elastic support 304 may include, but are not limited to: silicon rubber, a modified rubber material layer, sponge or EVA foam and the like. The thickness of the second elastic support 303 and the third elastic support 304 may be 2 mm to 2.5 mm. One surface of the second flexible supporting portion 303 and the third flexible supporting portion 304 has adhesiveness, or is covered with a thin adhesive tape.

In this embodiment, the display device 000 may further include: and the two ends of the strip-shaped cover plate are respectively connected with the frame body 301 in the frame assembly 300, the exciter is positioned between the sounding board 200 and the cover plate, and the exciter is connected with the cover plate. The cover plate may serve as a support reinforcement on the frame 301 and may serve to shield the exciter.

The number of the cover plates in the display device 000 may be two, and the display device 000 may further include: a strip-shaped supporting plate positioned between the two cover plates. Both ends of the support plate may be connected to the frame body 301 of the frame assembly 300. The support plate can support the sound-emitting plate 200 in the display device 000, prevent the center of the sound-emitting plate 200 from collapsing, and improve the stability of the display device 000.

Illustratively, the length directions of the two cover plates and the length direction of the support plate in the display device 000 are both parallel. And both ends of each cover plate, and both ends of the support plate may be connected to the frame body 301 of the frame assembly 300 by screws. Optionally, shock absorbing layers may be disposed at positions where both ends of each cover plate and both ends of the support plate contact the frame 301, and a thickness of each shock absorbing layer may range from 0.5 mm to 0.8 mm. The shock-absorbing layer may be made of materials including: acrylic acid sub-sensitive adhesive tape, similar adhesive tape, silica gel pad or foam, etc. The shock-absorbing layer can reduce the probability of noise caused by collision between the cover plate and the frame body 301 under the action of vibration of the sound-emitting plate 300, and further improve the sound effect of sound emitted by the display device 000.

In the embodiment of the present application, the plurality of actuators between the cover plate and the sound-emitting panel 200 in the display device 000 may be bonded to the cover plate through a buffer adhesive layer, so as to realize a buffer damping connection between the actuators and the cover plate in the display device 000.

In an exemplary embodiment, the display device 000 may be a projection screen in a laser projection system. As shown in fig. 19 and 20, fig. 19 is a schematic structural diagram of a projection screen provided in an embodiment of the present application, and fig. 20 is a schematic positional relationship diagram between the first elastic support portion, the second elastic support portion, and the third elastic support portion in the projection screen shown in fig. 19 and the sound-emitting panel. The first elastic support portion 302 in the projection screen comprises three cylindrical foam pieces 302a, and the second elastic support portion 303 and the third elastic support portion 304 in the projection screen are both rectangular strip-shaped foam pieces.

To sum up, the display device provided by the embodiment of the present application includes: a display screen, a sound board, a frame assembly and an exciter. The thickness of the first elastic supporting part between the side surface of the sound board and the frame body in the frame component in the width direction of the sound board is smaller than that of the sound board. And this first elastic support portion, second elastic support portion and third elastic support portion cut off each other, so, when this display device hangs, can avoid the higher covering of hardness in the acoustic board under the action of gravity, in the embedding first elastic support portion, the effectual probability that has reduced the edge of acoustic board and fix in first elastic support portion, when the acoustic board vibrates under the drive of exciter, the amplitude that the acoustic board vibrated at the edge can not receive the restriction, and then the sound production effect of this display device has been improved.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

The above description is intended to be exemplary only, and not to limit the present application, and any modifications, equivalents, improvements, etc. made within the spirit and scope of the present application are intended to be included therein.

Claims

1. A display device, comprising:

a display screen having a display surface;

the sounding board is positioned on one side of the display screen, which is far away from the display surface;

a frame assembly connected to an edge of the sound board;

and the exciter is connected with one surface of the sound-emitting plate, which is far away from the display screen, and drives the sound-emitting plate to vibrate to emit sound.

2. The display device according to claim 1,

the frame assembly includes: the frame body is connected with the edge of the sounding board through the first elastic supporting portion, and the first elastic supporting portion is located between the frame body and the side face of the sounding board.

3. The display device according to claim 2,

the width of the first elastic supporting part in the thickness direction of the sounding board is smaller than the thickness of the sounding board.

4. The display device according to claim 2,

the first elastic supporting part is cylindrical foam.

5. The display device according to claim 4,

the sound board includes: the first elastic supporting part is positioned between the plate-shaped middle layer and the frame body.

6. The display device according to claim 5,

the sound board is rectangular plate-shaped, and a first elastic support part between the frame and one side surface of the sound board comprises: at least one said cylindrical foam;

wherein, the length direction of every cylindrical foam is the same with the length direction of side.

7. The display device according to claim 6,

the first elastic support portion between the frame body and one side surface of the sound board includes: the cylindrical foam is uniformly distributed between the frame body and one side face of the sound-emitting plate.

8. The display device according to claim 4,

the material of the first elastic support part comprises: ethylene propylene diene monomer; the range of the diameter of the first elastic support part is as follows: 5 mm to 10 mm; the hardness of the first elastic supporting part is less than or equal to 30 degrees.

9. The display device according to any one of claims 2 to 8,

the frame assembly further comprises: the frame body passes through first elastic support portion second elastic support portion with third elastic support portion with the edge connection of sound production board, second elastic support portion is located the frame body with the sound production board is close to between the one side of display screen, third elastic support portion is located the frame body with the sound production board is kept away from between the one side of display screen.

10. The display device according to claim 9,

the second elastic support portion is bonded to at least one of the frame and the sound-emitting panel, and the third elastic support portion is bonded to at least one of the frame and the sound-emitting panel.

11. The display device according to claim 9,

the second elastic supporting part and the third elastic supporting part are both rectangular long strip-shaped foam.

12. The display device according to claim 11,

the sound board is rectangular plate-shaped, the frame includes: the sound board comprises four strip-shaped frames which correspond to the four edges of the sound board one by one, and the length direction of each strip-shaped frame is the same as the length direction of a second elastic supporting part and a third elastic supporting part between each strip-shaped frame and the sound board.

13. The display device according to any one of claims 1 to 8,

the display screen includes: a liquid crystal display screen, an organic light emitting diode display screen, or a projection screen.