CN216873392U

CN216873392U - Display device

Info

Publication number: CN216873392U
Application number: CN202220620174.8U
Authority: CN
Inventors: 周辉
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-07-01
Anticipated expiration: 2032-03-21

Abstract

The present invention provides a display apparatus including a display panel for displaying image information; a backplane to support the display panel; the exciter is positioned on one side of the display panel, which faces the back plate, the exciter comprises an exciter body and an actuating piece, the exciter body and the actuating piece are both connected with the display panel, and the actuating piece is used for driving the display panel to vibrate and sound. The utility model can realize the sound production at the front side of the display equipment and has better audio-visual effect of sound and picture integration.

Description

Display device

Technical Field

The utility model relates to the technical field of display, in particular to display equipment.

Background

With the development of science and technology and the improvement of the living standard of people, liquid crystal display devices are increasingly applied to the work and life of people.

The liquid crystal display device comprises a display panel and a backlight module, wherein the display panel is used for displaying image information such as images and characters, the backlight module is positioned at the rear side of the display panel and comprises a backlight source and a back plate, and the back plate is used for supporting the display panel and the backlight module. The liquid crystal display device further includes a speaker for emitting sound.

However, the speaker is usually disposed at the bottom of the display device, that is, the sound image position of the display device is located at the bottom of the display device, so that the center of the screen of the display device is separated from the sound image position, and the integration of sound and image cannot be realized, which results in poor user experience.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing problems, embodiments of the present invention provide a display device, which can generate sound through vibration of a display panel, so as to achieve integration of sound and picture, and provide better user experience.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

an embodiment of the present invention provides a display device, which includes a display panel for displaying image information;

a back plate for supporting the display panel;

the exciter is positioned on one side of the display panel, which faces the back plate, the exciter comprises an exciter body and an actuating piece, the exciter body and the actuating piece are both connected with the display panel, and the actuating piece is used for driving the display panel to vibrate and sound.

In some embodiments, the exciter further comprises a plurality of elastic legs connected with the exciter body, the elastic legs are arranged at intervals along the circumferential direction of the exciter body, and the elastic legs protrude out of the outer wall surface of the exciter body and are connected with the display panel.

In some embodiments, the resilient legs extend around a circumference of the actuator body, or the resilient legs extend in a radial direction of the actuator body.

In some embodiments, the display device includes an elastomeric buffer connecting the elastomeric legs and the display panel.

In some embodiments, the actuator further comprises a membrane connected to the actuator, the membrane being configured to vibrate and emit sound under the actuation of the actuator.

In some embodiments, the vibrating piece is a metal sheet or a plastic sheet.

In some embodiments, the display device further includes a rear case, the rear case is located on a side of the back plate away from the display panel, a sound outlet cavity is defined between the rear case and the back plate, the vibrating reed is located in the sound outlet cavity, and a sound outlet is further disposed between the rear case and the back plate.

In some embodiments, the actuator includes a connection bar extending in a thickness direction of the display device, and the actuator and the vibration plate are respectively connected to both ends of the connection bar.

In some embodiments, the connecting rod is a plastic rod or an aluminum rod.

In some embodiments, the exciter is provided in plurality, and the plurality of exciters are arranged at intervals.

In some embodiments, the display device further includes a partition, two ends of the partition are respectively connected to the back plate and the rear shell to partition the sound outlet cavity into a plurality of resonant cavities, at least one exciter is disposed in each resonant cavity, and each resonant cavity is correspondingly provided with the sound outlet.

In some embodiments, the backplane comprises a backplane body and a first side plate extending along an edge of the backplane body and protruding out of the backplane body towards a side of the display panel; the rear shell comprises a rear shell body and a second side plate, wherein the second side plate extends along the edge of the rear shell body and protrudes out of the rear shell body towards one side of the display panel; the vibrating reed is located between the back plate body and the rear shell body, the second side plate is arranged on the outer side of the first side plate in a surrounding mode, and the sound outlet is located between the first side plate and the second side plate.

In some embodiments, the display apparatus comprises a backlight module comprising: the actuator comprises an exciter body, a backlight plate, a driving part and an actuator, wherein the exciter body and the actuator are connected with the backlight plate; the display panel is positioned on the light-emitting side of the fluorescent film assembly, the backlight plate is positioned on the light-in side of the fluorescent film assembly, the edge of the display panel is hermetically connected with the edge of the backlight plate body, so that a closed gas layer is formed between the display panel and the backlight plate body, and the light source is positioned in the gas layer.

In some embodiments, the display device further comprises a reinforcing plate attached to a side of the backlight plate body facing away from the display panel, the exciter is connected to the reinforcing plate, and the damping of the reinforcing plate is greater than the damping of the backlight plate body.

In some embodiments, the display device includes a first adhesive member having an adhesive property, the first adhesive member extends along an edge of the backlight panel body, and the display panel and the backlight panel body are adhesively fixed by the first adhesive member.

In some embodiments, the display device further includes a plurality of second bonding members, and the plurality of second bonding members are disposed at intervals and used for connecting the backlight plate body and the back plate, so that the distances between different positions of the backlight plate body and the back plate are all within a preset range.

In some embodiments, the second adhesive has a hardness less than the hardness of the first adhesive.

In some embodiments, the display device further includes a second elastic support, one end of the second elastic support is connected to the backlight plate body, and the other end of the second elastic support abuts against the display panel.

Compared with the related art, the display device provided by the embodiment of the utility model has the following advantages:

through with direct or indirect connection of exciter body and actuated piece on display panel, the actuated piece can drive display panel vibration sound production, realizes the front side sound production of display device promptly, easily realizes the sound and picture unification, and user experience is better. And because the exciter body is also connected on the display panel, the exciter forms an inertia driving mode to drive the display panel to vibrate, and better low-frequency sound is easy to excite.

In addition to the technical problems solved by the embodiments of the present invention, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems that can be solved by the display device provided by the embodiments of the present invention, other technical features included in the technical solutions, and advantages brought by the technical features will be further described in detail in the detailed description.

Drawings

In order to more clearly illustrate the embodiments of the present invention or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a first schematic structural diagram of a display device according to some embodiments of the present application;

FIG. 2 is a second schematic structural diagram of a display device according to some embodiments of the present application;

FIG. 3 is a schematic diagram of a third configuration of a display device according to some embodiments of the present application;

FIG. 4 is a first cross-sectional view of the display device of FIGS. 1 and 2 at the actuator position;

FIG. 5 is a second cross-sectional view of the display device of FIGS. 1 and 2 at the actuator position;

FIG. 6 is a schematic structural view of the backlight plate and the reinforcing plate of FIGS. 3 and 4;

FIG. 7 is another schematic structural view of the actuator of FIGS. 3 and 4;

FIG. 8 is another schematic view of the actuator of FIGS. 3 and 4;

FIG. 9 is a schematic diagram of another actuator in a display device according to some embodiments of the present application;

FIG. 10 is a cross-sectional view of the actuator of FIG. 9;

FIG. 11 is a cross-sectional view III of the display device of FIGS. 1 and 2 at the actuator position;

FIG. 12 is a cross-sectional view four of the display device of FIGS. 1 and 2 at the actuator position;

FIG. 13 is a cross-sectional view five of the display device of FIGS. 1 and 2 at the actuator position;

FIG. 14 is a fourth schematic structural view of a display device according to some embodiments of the present application;

FIG. 15 is a schematic structural diagram of a display device according to some embodiments of the present application;

fig. 16 is a schematic diagram six of a display device according to some embodiments of the present application.

Reference numerals:

10: a display device;

100: a display panel;

200: a backlight module; 210: a backlight plate; 211: a backlight plate body; 212: a light source; 220: a fluorescent film assembly; 221: a fluorescent film; 222: a diffusion membrane; 223: a brightness enhancement film;

300: a back plate; 310: a back plate body; 320: a first side plate;

400: an exciter; 410: an exciter body; 420: an actuator; 430: a vibrating piece; 440: a magnetic component; 441: a through hole; 442: iron U; 443: washer; 450: a connecting rod; 470: an elastic leg; 480: a damping block; 490: elastic wave; 401: a coil; 402: a telescoping member; 403: a first moving part; 404: a second moving part; 405: a magnetic member; 406: a connecting portion;

500: a rear housing; 510: a rear housing body; 520: a second side plate;

600: a reinforcing plate;

700: a separator; 710: sound insulation sponge;

810: a first adhesive member; 820: a second adhesive member;

900: a second elastic support member;

m: a gas layer; q: a sound outlet cavity; x: a resonant cavity; p: a sound outlet; l: the length of the sounding path.

Detailed Description

In order to make the aforementioned objects, features and advantages of the embodiments of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the correlation technique, display device usually adopts the speaker sound production, and the speaker is located display device's bottom, leads to display device's picture and the separation of audio-visual position, can't realize the sound and picture unification, and user experience is relatively poor. Alternatively, the display device may employ an exciter to drive the display panel to vibrate and generate sound. Taking an OLED (Organic Light Emitting Diode) display device as an example, a display panel of the OLED display device includes an Organic self-luminescent layer, and an exciter may be directly connected to the display panel and drive the display panel to vibrate and generate sound. However, for a Liquid Crystal Display (LCD) device, a backlight source is required to emit light from a Display panel, and an air gap is formed between the Display panel and the backlight source, so that the LCD device cannot drive the Display panel to vibrate and generate sound through an exciter.

In view of this, embodiments of the present disclosure provide a display device, wherein a sealed gas layer is formed between a display panel and a backlight plate, so that the gas layer can be equivalent to a damping spring, an exciter is connected to the backlight plate, and vibration of the exciter can be transmitted to the display panel through the backlight plate and the gas layer in sequence to drive the display panel to vibrate and generate sound. Therefore, the display device provided by the embodiment of the application realizes that the front side of the display device is driven to sound through the exciter, the integration of sound and picture is easy to realize, and the audio-visual experience effect of a user is better.

Fig. 1 is a first schematic structural diagram of a display device according to some embodiments of the present application. Fig. 2 is a schematic structural diagram of a display device according to some embodiments of the present application. Fig. 3 is a schematic structural diagram three of a display device according to some embodiments of the present application. Fig. 4 is a first cross-sectional view of the display device of fig. 1 and 2 at the actuator position. Fig. 5 is a cross-sectional view two of the display device of fig. 1 and 2 at the actuator position.

Referring to fig. 1 to 5, the present embodiment provides a display device 10, the display device 10 is a liquid crystal display device, and the display device 10 includes a display panel 100 for displaying image information such as characters and images.

The display panel 100 includes a touch glass and a liquid crystal display. The touch glass and the liquid crystal screen are sequentially stacked in the thickness direction of the display device 10.

The display device 10 has a day side, a ground side, a left side, a right side, and a front side and a rear side. The left and right sides of the display device 10 refer to the left and right sides of the user when the user faces the touch glass side and performs a touch operation. 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 rear side, the upper side of the display device 10 is the day side, and the lower side of the display device 10 is the ground side.

Therefore, the touch glass is arranged on the front side of the liquid crystal screen and used for protecting the liquid crystal screen.

The Liquid Crystal screen is arranged on the rear side of the touch glass, the Liquid Crystal screen comprises a Color Filter (CF) substrate, a Thin Film Transistor (TFT) substrate (also called an array substrate) and a Liquid Crystal (LC) layer, and the Liquid Crystal layer is located between the Color Filter substrate and the array substrate. The tft substrate is provided with a data line and a scan line, and the direction of the liquid crystal molecules is controlled by whether the data line and the scan line are powered on or not, so that the light of the light source 212 is emitted through the color film substrate to generate a picture with a preset color.

The display device 10 further comprises a backlight module 200, the backlight module 200 comprising a backlight plate 210, the backlight plate 210 being configured to generate light. The backlight plate 210 includes a backlight plate body 211 and a light source 212, and the backlight plate body 211 may be an aluminum plate, a Printed Circuit Board (PCB), or the like. The Light source 212 may be a Light-Emitting Diode (LED), a sub-millimeter Light-Emitting Diode (Mini LED), or a Micro-Light-Emitting Diode (Micro LED). The light source 212 may be a plurality of and spaced apart from each other on the backlight plate body 211.

In some embodiments, considering the size of the display device 10 and the manufacturing process of the backlight plate body 211, the size of the display device 10 is generally larger than that of the backlight plate 210, that is, the number of the backlight plates 210 is generally multiple, and the multiple backlight plates 210 are arranged in an array. For example, referring to fig. 3, the display device 10 includes three backlight plates 210, and the three backlight plates 210 are arranged in a transverse direction of the display device 10.

The backlight module 200 further includes a fluorescent film assembly 220, the display panel 100 is located at a light-emitting side of the fluorescent film assembly 220, and the backlight plate 210 is located at a light-entering side of the fluorescent film assembly 220. Namely, the display panel 100, the fluorescent film assembly 220, and the backlight plate 210 are stacked in the thickness direction of the display device 10.

The fluorescent film assembly 220 includes a diffusion film 222, a fluorescent film 221 and a brightness enhancement film 223, the diffusion film 222 is disposed in front of the light sources 212, and a user can uniformly mix light from the light sources 212, that is, the light sources 212 can be converted into surface light sources 212. The fluorescent film 221 converts the light emitted from the light source 212 into white light, so that the light source 212 may emit blue or violet light without limiting the color of the light emitted from the light source 212. The brightness enhancement film 223 serves to enhance the brightness of light.

In some embodiments, the edge of the display panel 100 is hermetically connected to the edge of the backlight plate body 211, so that a hermetic gas layer M is formed between the display panel 100 and the backlight plate body 211, and the light source 212 is located in the gas layer M.

In some embodiments, the liquid crystal panel and the fluorescent film assembly 220 may be pressed together to prevent an air gap from being formed between the liquid crystal panel, the brightness enhancement film 223, the fluorescent film 221 and the diffusion film 222, which allows air to flow through.

In some embodiments, the liquid crystal panel and the fluorescent film assembly 220 may be further bonded and fixed two by two, for example, by a photosensitive adhesive (UV glue), a foam, a double-sided tape, or the like.

That is, the display panel 100 and the fluorescent film assembly 220 may be fixedly connected into a whole by adhesion, and no gas gap is formed between the liquid crystal panel and the brightness enhancement film 223, between the brightness enhancement film 223 and the fluorescent film 221, and between the fluorescent film 221 and the diffusion film 222, and at this time, the gas layer M is formed between the fluorescent film assembly 220 and the backlight plate 211.

When the liquid crystal panel and the fluorescent film assembly 220 are pressed together, an air gap may be formed between the liquid crystal panel and the brightness enhancement film 223, between the brightness enhancement film 223 and the fluorescent film 221, and between the fluorescent film 221 and the diffusion film 222, and the air layer M is formed between the display panel 100 and the backlight plate 211, and the air gap is in a closed state.

Specifically, the display device 10 includes a first adhesive member 810 with adhesive, the first adhesive member 810 is double-sided tape or foam, wherein the first adhesive member 810 extends along an edge of the backlight panel body 211, the fluorescent film assembly 220 and the backlight panel body 211 are adhesively fixed by the first adhesive member 810, that is, the diffusion film 222 and the backlight panel body 211 are adhesively fixed by the first adhesive member 810. Thus, a closed gas layer M is formed between the phosphor film assembly 220 and the backlight plate 210, and the gas layer M may be filled with air, nitrogen, or the like.

The gas layer M is closed, i.e. the gas layer M and the outside air do not flow through each other. The gas layer M may be equivalent to a damping spring for transmitting vibration between the backlight 210 and the display panel 100.

The size of the gap of the gas layer M may be determined according to the size of the light source 212, and the gap may be 0.3mm to 10mm, for example, 1 mm. It should be noted that the numerical values and numerical ranges related to the embodiments of the present application are approximate values, and there may be a certain range of errors depending on the manufacturing process, and the error may be considered as negligible by those skilled in the art.

Among them, the diffusion film 222 and the light source 212 may abut against each other in the thickness direction of the display device 10, the gap of the gas layer M is small, and the thickness of the display device 10 is small. In this case, the light source 212 may be made of a soft packaging material to avoid noise generated by rigid collision between the diffusion film 222 and the light source 212.

In some embodiments, the diffuser film 222 may be spaced apart from the light source 212 to avoid noise generated by a rigid collision between the diffuser film 222 and the light source 212.

At this time, the display device 10 may further include a second elastic supporting member 900 (as shown in fig. 5), the second elastic supporting member 900 may be a silicone pad or a rubber pad, the number of the second elastic supporting members 900 is multiple, and the multiple second elastic supporting members 900 are arranged at intervals.

One end of the second elastic supporting member 900 is connected to the backlight plate 211, and the other end is connected to the diffusion film 222. The second elastic supporting member 900 may be fixed to the backlight plate 210 by an adhesive member, such as UV glue, so as to prevent the second elastic supporting member 900 from moving relative to the backlight plate 210.

Through set up second elastic support 900 between board 210 in a poor light and diffusion barrier 222, can be connected fluorescent film subassembly 220 and board 210 in a poor light as a whole, can be equivalent to a single-deck screen, avoid because of gas layer M clearance too big, lead to appearing relative movement between fluorescent film subassembly 220 and the board 210 in a poor light.

Since the fluorescent film assembly 220 converts and homogenizes the light generated by the light source 212, even if the second elastic supporting member 900 is disposed on the side of the backlight plate body 211 where the light source 212 is disposed, no shadow is generated on the display panel 100, resulting in uneven brightness of the display panel 100.

The display device 10 further includes a back plate 300, wherein the back plate 300 is disposed on a side of the backlight module 200 away from the display panel 100, that is, the back plate 300 is disposed on a rear side of the backlight plate 210, and is used for supporting the backlight module 200 and the display panel 100. The material of the backplate 300 may be aluminum alloy, steel, etc. to provide effective support.

The display device 10 further includes a rear case 500 on a side of the rear panel 300 facing away from the display panel 100, i.e., the rear case 500 is disposed at a rear side of the rear panel 300, and a controller, an electrical connection line, etc. of the display device 10 may be disposed between the rear panel 300 and the rear case 500 to simplify an external appearance of the display device 10. The rear case 500 may be made of plastic, metal, or the like.

The display device 10 further includes an actuator 400, and the actuator 400 is any one or more of an electromagnetic actuator, a magnetostrictive actuator, and a piezoelectric actuator, which is highly applicable.

The exciter 400 includes an exciter body 410 and an actuator 420, and the actuator 420 is connected to the backlight plate 211, when the exciter 400 is started, the actuator 420 vibrates and drives the backlight plate 211 to vibrate, and the vibration of the backlight plate 211 is transmitted to the display panel 100 through the gas layer M, so as to drive the display panel 100 to vibrate and generate sound.

The sealed gas layer M may be equivalent to a damping spring, and after the actuator 420 drives the backlight plate 211 to vibrate, the vibration of the backlight plate 210 may be transmitted to the display panel 100 through the gas layer M, and drive the display panel 100 to vibrate and sound, that is, the display panel 100 of the liquid crystal display device is driven to vibrate and sound. That is to say, the display device 10 provided by the present embodiment can realize front-side sound production, and the sound image position and the screen center position are approximately overlapped, so as to realize sound and picture integration, and the viewing effect of the user is good.

Wherein, the fluorescent film assembly 220 may have different vibration forms according to the fixing manner between the fluorescent film assembly 220 and the liquid crystal panel. For example, when the phosphor film assembly 220 and the liquid crystal panel are fixed by the adhesive member, the phosphor film 221 fixing member may vibrate in synchronization with the liquid crystal panel.

When the fluorescent film assembly 220 is pressed against the liquid crystal panel, a gap may be formed between the fluorescent film assembly 220 and the liquid crystal panel, and the fluorescent film assembly 220 may vibrate asynchronously with the liquid crystal panel, for example, the fluorescent film assembly 220 may be in a static state.

It will be appreciated that the effect of low frequency tones on the display device 10 is positively correlated to the amount of air that the actuator 400 can move. Since the exciter 400 can drive the entire display area of the display panel 100 to vibrate and generate sound, the area of the portion of the display panel 100 that can vibrate is large, which can push a large volume of air, and the display device 10 can generate better low-frequency sound.

For any flat plate, under the condition that the geometric dimension of the flat plate is determined, the flat plate has modal frequency of infinite orders, and the modal frequency formula of the flat plate vibration is as follows:

wherein a and b are the length and width of the flat plate, ρ is the density of the flat plate, h is the thickness of the flat plate, and D is the bending strength of the flat plate.

Frequency f of first-order mode of flat panel₁₁The smaller the frequency of the sound waves emitted by the panel, the better the low frequency sound effect of the display device 10.

It can be understood that the display panel 100 and the backlight module 200 as an integral flat plate structure have a heavy weight, which is equivalent to a large equivalent density ρ of the flat plate structure, as can be seen from the formula (1), ρ is increased, and the first-order modal frequency f is increased₁₁This reduction helps the exciter 400 to excite lower frequency tones with better sound quality.

It will be appreciated that the air layer is equivalent to a damping spring, which has a certain filtering effect on high frequency sounds, i.e. the sound emitted by the display panel 100 has high frequency loss.

To enhance the high frequency effect of the display device 10, the actuator 400 comprises a membrane 430, the membrane 430 being connected to the actuator 420, such that the membrane 430 is configured to drive the air vibration to generate sound under the drive of the actuator 420, i.e. the actuator 420 is vibrating, and the membrane 430 is driven synchronously to generate sound during the vibration.

The vibrating plate 430 can be the backplate 300 or the rear housing 500, i.e. the actuator 420 drives the backplate 300 or the rear housing 500 to vibrate and generate sound. In some embodiments, the vibrating reed 430 can be a separate component to enhance the high frequency effect. For example, when the actuator 400 is an electromagnetic actuator, the size of the vibrating piece 430 may be equivalent to the size of the U-iron 442 of the electromagnetic actuator.

In some embodiments, the vibration plate 430 may be a metal sheet or a plastic sheet, and the thickness of the vibration plate 430 may be 0.3mm to 3 mm. Thus, the vibrating piece 430 has a smaller weight and a higher stiffness, and can excite a better high frequency sound.

That is to say, the display device 10 provided in the embodiment of the present application can drive the display panel 100 and the vibrating plate 430 to generate sound through the actuator 420, and has a better sound effect.

By driving the vibrating plate 430 and the display panel 100 to vibrate and generate sound at the same time, the display device 10 provided by the embodiment of the present application can emit low-frequency sound of 50 to 70Hz and high-frequency sound of about 2000Hz, and the display device 10 has a wider frequency response.

It can be understood that a gap is formed between the backplate 300 and the rear housing 500, a sound cavity Q is defined between the rear housing 500 and the backplate 300, and the vibrating reed 430 is located in the sound cavity Q to protect the vibrating reed 430. And a sound outlet P is further provided between the rear case 500 and the back plate 300, the vibrating reed 430 pushes the air in the sound outlet cavity Q to vibrate and sound, and the sound wave generated by vibration can be transmitted to the outside of the sound outlet cavity Q through the sound outlet P and is overlapped with the sound wave generated by the display panel 100, so as to compensate the high frequency part.

Fig. 7 is another schematic view of the actuator of fig. 3 and 4. Fig. 8 is another schematic diagram of the actuator of fig. 3 and 4.

In some embodiments, taking actuator 400 as an example of an electromagnetic actuator, referring to fig. 7 and 8, the electromagnetic actuator includes a voice coil and a magnetic assembly 440. Wherein the magnetic assembly 440 is configured to generate a magnetic field in which the voice coil vibrates in an axial direction of the voice coil.

Specifically, the magnetic assembly 440 includes a U-iron 442 and a washer 443, which are well known to those skilled in the art, the U-iron 442 is in a cylindrical shape with an opening, the magnet is disposed on the bottom surface inside the U-iron 442, the washer 443 is disposed on the magnet, a gap, called a magnetic air gap, is formed between the magnet and the washer 443 and the inner wall surface of the U-iron 442, and the magnetic assembly 440 is configured to provide a stable magnetic field in the magnetic air gap.

Wherein, voice coil one end is connected with board 210 in a poor light, can also set up the connection piece between voice coil and the board 210 in a poor light to increase the area of being connected between voice coil and the board 210 in a poor light, avoid breaking away from each other between voice coil and the board 210 in a poor light. The other end of the voice coil is inserted into the magnetic air gap, and the voice coil is fixed on the exciter body 410 through elastic waves. Along with the change of the magnetic field, the voice coil is stressed to reciprocate along the axial direction of the voice coil.

That is, when the actuator 400 is an electromagnetic actuator, the voice coil constitutes the actuator 420, and the voice coil is connected to the backlight plate body 211.

To connect the voice coil and the vibration plate 430, the actuator 400 further includes a connection rod 450, the connection rod 450 extending in a thickness direction of the display device 10, and the connection rod 450 may be an aluminum rod, a plastic rod, or the like, having a small weight. The magnetic assembly 440 is provided with a through hole 441 for the connection rod 450 to pass through, and in particular, the through hole 441 is disposed on the magnet, the U-iron 442 and the washer 443, such that the voice coil and the vibration plate 430 are respectively connected to two ends of the connection rod 450, that is, the actuator 420 and the vibration plate 430 are respectively connected to two ends of the connection rod 450, thereby preventing the vibration plate 430 and the backlight plate 210 from interfering with each other during the vibration process.

It is understood that the connection rod 450 extends in the thickness direction of the display device 10, meaning that both ends of the connection rod 450 connected to the actuating member and the vibration plate 430 are respectively located at both sides of the actuator body in the thickness direction of the display device 10, without limiting the extending direction of the rod body of the connection rod 450. For example, when the connection rod 450 passes through the U-iron 442 and the washer 443, the connection rod 450 may be a straight rod, and when the connection rod 450 passes around the outer wall surface of the actuator body, the connection rod 450 may be a bent rod, and the shape of the connection rod 450 is not limited in this embodiment.

In some embodiments, taking the actuator 400 as a magnetostrictive actuator, the magnetostrictive actuator uses the magnetostrictive effect to drive the backlight plate 210 to vibrate. The magnetostrictive effect refers to that a magnetostrictive material extends or shortens along a magnetization direction after being magnetized in a magnetic field, and the structure, the material, and the like of each component in the magnetostrictive actuator are not limited in this embodiment.

FIG. 9 is a schematic diagram of another actuator in a display device according to some embodiments of the present application. Fig. 10 is a cross-sectional view of the actuator of fig. 9.

In some embodiments, referring to fig. 9 and 10, the actuator body includes a coil 401 and a telescopic member 402, and the telescopic member 402 can be deformed telescopically along the axial direction of the coil 401; the actuator 420 includes a first moving portion 403 and a second moving portion 404 connected, the first moving portion 403 is connected to the actuator body, and the first moving portion 403 is located at an end portion of the coil 401 in the axial direction thereof; the second moving portion 404 is connected to the actuator body and to the backlight plate 210, and the second moving portion 404 is located on the side of the coil 401 in the radial direction thereof. That is, the first moving portion 403 and the second moving portion 404 are connected and have a bent structure similar to an L shape, and the first moving portion 403 may constitute one of the folded edges of the bent structure and be disposed at an end portion of the coil 401, and the second moving portion 404 is located at the other folded edge and be disposed at a radial side of the coil 401.

The magnetostrictive actuator further comprises a magnetic member 405, the coil 401 is used for generating an alternating magnetic field according to a control signal, and the telescopic member 402 can generate telescopic deformation along the axial direction of the coil 401 in a superposed magnetic field of the alternating magnetic field and the magnetic field generated by the magnetic member 405.

When the telescopic member 402 is extended and retracted, the first moving portion 403 can be driven by the telescopic member 402 to move back and forth relative to the end of the coil 401, and the second moving portion 404 can move back and forth under the elastic force of the first moving portion 403 and drive the body to vibrate, wherein the direction of the back and forth movement of the second moving portion 404 forms an included angle with the axial direction of the coil 401.

When the telescopic member 402 extends, the first moving portion 403 can move towards the side away from the coil 401 under the push of the telescopic member 402; when the telescopic member 402 is contracted, the first moving portion 403 can move towards the side close to the coil 401 under the action of the elastic force of the first moving portion 403, so that when the telescopic member 402 is expanded and contracted in the superimposed magnetic field, the first moving portion 403 can move back and forth relative to the coil 401. Similarly, the second moving portion 404 can move back and forth under the action of the first moving portion 403 or its own elastic force, so as to drive the backlight panel 210 to vibrate.

Because the second moving portion 404 is located at the radial side of the coil 401, the reciprocating direction of the second moving portion 404 forms an included angle with the axial direction of the coil 401, that is, the reciprocating direction of the backlight plate 210 forms an included angle with the axial direction of the coil 401, the dimension of the exciter 400 along the reciprocating direction of the backlight plate 210 is approximately the radial dimension along the coil 401, and the dimension of the exciter 400 along the radial direction of the coil 401 is much smaller than the dimension of the exciter 400 along the axial direction of the coil 401, so that the dimension of the display device 10 along the reciprocating direction of the backlight plate 210 is smaller, and the display device 10 is in accordance with the trend of ultra-thinning of the display device 10.

It is understood that when the actuator 400 is a magnetostrictive actuator, the connecting rod 450 may pass through the actuator body, or may extend around the outer wall surface of the actuator body to the other side of the actuator body, and the present embodiment does not limit the structure of the connecting rod 450.

That is, the first moving portion 403 may perform a reciprocating swing with its connection end to the actuator body being supported, and has a fixed end and a moving end connected to the second moving portion 404.

In some embodiments, a first distance along the extending direction of the first moving portion 403 is formed between the fixed end of the first moving portion 403 and the telescopic member 402, a second distance along the extending direction of the first moving portion 403 is formed between the moving end of the first moving portion 403 and the telescopic member 402, and the first distance is smaller than the second distance, so as to effectively increase the reciprocating offset of the moving end of the first moving portion 403 and improve the vibration amplitude of the backlight panel 210, and the sound emitted by the backlight panel 210 may have a larger sound pressure level and a lower low frequency.

In some embodiments, the reciprocating direction of the second moving portion 404 and the telescoping direction of the telescoping piece 402 are perpendicular to each other.

And the first moving part 403 and the second moving part 404 are connected by an inclined connection part 406, and in some embodiments, the first connection part 406 extends in a radial direction of the coil 401, so that the second moving part 404 can have a larger vibration amplitude by a smaller moving distance at the end where the first moving part 403 is connected with the connection part 406.

Fig. 6 is a schematic structural view of the backlight plate and the reinforcing plate in fig. 3 and 4. Referring to fig. 3 to 6, in view of the fact that the backlight panel 210 is usually multiple and the thickness of the backlight panel 210 is small and easy to deform, in some embodiments, the display device 10 further includes a reinforcing plate 600, the thickness of the reinforcing plate 600 may be 1mm to 4mm, for example, 2mm, the reinforcing plate 600 is attached to the side of the backlight panel body 211 away from the display panel 100, for example, the reinforcing plate 600 is fixed to the backlight panel 210 by an adhesive such as a double-sided adhesive, and the exciter 400 is connected to the reinforcing plate 600. Thus, the backlight plates 210 and the reinforcing plate 600 are connected into a whole, and a close splicing seam is arranged between two adjacent backlight plates 210. Meanwhile, the backlight plate 210 may also dissipate heat through the reinforcement plate 600.

In some embodiments, the stiffener plate 600 is a sandwich panel or a carbon fiber plate, and the sandwich panel may be any one of a honeycomb sandwich panel, a foam sandwich panel, a wood sandwich panel, and an acrylic plate, which is low in cost and easy to obtain. The honeycomb sandwich board can be an aluminum honeycomb sandwich board, an aramid honeycomb sandwich board and the like, the foam sandwich board can be a Polyvinyl chloride (PVC) foam sandwich board, a Polymethacrylimide (PMI) foam sandwich board and the like, and the wood sandwich board can be balsa wood such as balsa wood.

It is well known to those skilled in the art that the quality of sound can be measured in terms of volume, frequency range, timbre, etc. In which the sound emitted from the sandwich panel has a higher volume and a wider and less wavy audio response than the sound emitted from the aluminum plate, that is, by providing the reinforcing plate 600, the sound emitted from the display device 10 can have a better sound quality.

Specifically, the sandwich panel comprises a core material and skins, wherein the skins are attached to two opposite sides of the core material. The skin can be made of glass fiber cloth, carbon fiber cloth, glass-carbon mixed fiber, aluminum paper, plastic and the like. The core material can be paper, aramid fiber, metal or other hard foam materials.

The damping of the reinforcing plate 600 is greater than that of the backlight plate body 211, and the density and the mass of the reinforcing plate are smaller than those of the backlight plate body 211 in the related art.

By arranging the reinforcing plate 600 with large damping, the equivalent damping of the backlight plate 210 can be improved, the equivalent density of the backlight plate 210 is reduced, the bending modulus of the backlight plate 210 is improved, the number of modal resonance frequencies is increased, the frequency response conducted to the display panel 100 is improved, the frequency range of sound emitted by the display panel 100 is expanded, and the influence on the listening feeling caused by obvious peak valley and distortion generated by the audio response of the display panel 100 is avoided.

Moreover, since the reinforcing plate 600 is a continuous solid structure, the reflection of sound waves in the gap between two adjacent backlight plates 210 can be reduced, and the distortion caused by multiple reflections of the excited sound waves in the gap can be avoided.

In some embodiments, the actuator body 410 may be provided with a plurality of elastic legs 470 at the outer circumferential side, and the elastic legs 470 may be made of metal or plastic. As shown in fig. 7, the number of the elastic legs 470 may be 3 to 5, and the actuator body 410 is connected to the back plate 300 or the backlight plate 210 through the elastic legs 470.

The elastic legs 470 are spaced along the circumference of the exciter body to provide a plurality of connection positions between the exciter body and the display panel 100, and the fixing stability of the exciter 400 is high.

Wherein the elastic legs 470 protrude from the outer wall surface of the exciter body and are connected to the back plate 300 or the backlight plate 210. Because the elastic support legs 470 can elastically deform, the exciter body and the backlight plate 210 can move relatively, that is, during the vibration process of the exciter 400, the exciter body can vibrate relative to the backlight plate 210, so that the exciter 400 forms an inertia driving mode to drive the display panel 100 to vibrate, which is helpful for exciting low-frequency sound with better sound effect.

Wherein the elastic legs 470 can extend in a straight line (not shown), the structure is simple, and the forming is easy. In some embodiments, the elastic legs 470 may also extend along the circumference of the exciter body 410 (as shown in fig. 7), that is, the elastic legs 470 are arc-shaped, so that the length of the elastic legs 470 is larger, and thus, the elastic legs can have a larger elastic deformation amount, and a larger relative displacement amount between the exciter body and the back plate 300 or the backlight plate 210 can be provided, which is easy to enable the exciter 400 to form an inertia driving manner to drive the backlight plate 210 to vibrate, and is helpful for exciting low-frequency sound with better sound effect.

It is understood that the free ends of the elastic legs 470 may also have a branch structure to increase the connection position with the back plate 300 or the backlight plate 210, thereby improving the connection stability. Or the elastic legs 470 may have a wavy shape, so that the elastic legs 470 have a larger elastic deformation amount, and the shape, size, etc. of the elastic legs 470 are not limited in this embodiment.

Fig. 11 is a cross-sectional view three of the display device of fig. 1 and 2 at the actuator position. Fig. 12 is a cross-sectional view four of the display device of fig. 1 and 2 at the actuator position. Fig. 13 is a cross-sectional view five of the display device of fig. 1 and 2 at the actuator position. It should be noted that the vibrating piece 430 is not shown in fig. 13 for simplification of the schematic view.

In some embodiments, referring to fig. 4, 5, 11, 12 and 13, the exciter body 410 is connected to the backlight plate body 211. Taking the electromagnetic exciter as an example, the U-shaped iron 442 is connected to the backlight plate 210 through an elastic supporting leg 470, and an elastic buffer is disposed at an end of the elastic supporting leg 470, and the elastic buffer is a damping block 480, such as a double-sided tape, a foam, and the like. In this way, a larger relative movement between the elastic legs 470 and the backlight plate 210 can be allowed, which helps to realize that the exciter 400 drives the display panel 100 to vibrate in an inertia driving manner.

Thus, when the exciter 400 works, the voice coil can generate high-frequency vibration and drive the backlight plate 210 to vibrate, and through the reaction force of the voice coil, the exciter body 410 can drive the backlight plate 210 to vibrate with low-frequency vibration, that is, the exciter body 410 vibrates along with the vibration of the backlight plate 210, and the exciter 400 forms an inertia driving mode to drive the backlight plate 210 to vibrate.

As can be seen from the above equation (1), the exciter body 410 is connected to the backlight plate 211, so that the backlight plate 211 adds a vibration weight, and the flat plate structure formed by the display panel 100 and the backlight 210 equivalently has increased equivalent density and first-order modal frequency f₁₁And low-frequency sound with better sound effect is excited.

In some embodiments, the exciter 400 is provided in plurality, and the plurality of exciters 400 are spaced apart. In this way, multiple exciters 400 may form a stereo system, enhancing the user experience.

Fig. 14 is a fourth schematic structural diagram of a display device according to some embodiments of the present application. Fig. 15 is a schematic structural diagram of a display device according to some embodiments of the present application. Fig. 16 is a schematic diagram six of a display device according to some embodiments of the present application.

Referring to fig. 11 to fig. 16, in order to improve the high frequency effect of the display device 10, the present embodiment may adopt a multi-mode high frequency vibration bending wave superposition mode. In some embodiments, the display device 10 further includes a partition 700, and both ends of the partition 700 are respectively connected to the backplate 300 and the rear case 500 to partition the sound-emitting cavity Q into a plurality of resonators X, so that the sound wave emitted from the vibration plate 430 in each resonator X can resonate in the corresponding resonator X.

The resonant frequency of each resonant cavity X may be different, so that each resonant cavity X may emit sound waves with different frequency responses, the high-frequency resonant frequency range of the display device 10 is wide, and a large sound pressure level may be obtained in the wide frequency range.

To avoid the mutual influence of two adjacent resonators X, the partition 700 may include a sound-insulating material. In some embodiments, one end of the spacer 700 is fixedly connected to one of the back plate 300 and the rear case 500, and the other end is spaced apart from the other of the back plate 300 and the rear case 500. For example, a first end of the partition 700 is integrally formed with the rear case 500, and a sound insulation sponge 710 is filled between a second end of the partition 700 and the back plate 300.

At least one exciter 400 is arranged in each resonant cavity X, that is, at least one vibrating reed 430 is correspondingly arranged in each resonant cavity X, and each resonant cavity X is correspondingly provided with a sound outlet P for leading out sound waves generated by the vibration of the vibrating reed 430 so as to compensate for high frequencies.

The shape and size of the resonant cavity X and the position of the exciter 400 in the resonant cavity X can be determined by modal analysis, which is not limited in this embodiment.

Taking fig. 12 and 14 as an example, a plurality of exciters 400 are arranged at intervals in the horizontal direction, a partition 700 divides a sound-emitting cavity Q into two resonators X, each resonator X extends in the horizontal direction, sound-emitting ports P of the two resonators X are respectively located on the left side and the right side of the display device 10, a sound-emitting path length of the resonator X is L, the sound-emitting path length L is an integral multiple of one-half of the wavelength of the sound wave, for example, one time, two times or more, and the exciters 400 may be arranged at any antinode position of one-half of the wavelength of the sound wave.

In some embodiments, the sound outlet P may be located at any side position of the display device 10, such as the left side, the right side, or the upper side. The sound outlet P may propagate a high-frequency sound wave toward the front or side front of the display device 10.

The back plate 300 includes a back plate body 310, the back plate body 310 is used for supporting the backlight plate 210 and the display panel 100, the back plate 300 further includes a first side plate 320, the first side plate 320 extends along an edge of the back plate body 310 and protrudes out of the back plate body 310 toward one side of the display panel 100, that is, the first side plate 320 protrudes out of the front side of the back plate body 310, so that the first side plate 320 surrounds the circumferential outer sides of the backlight plate 210 and the display panel 100.

The rear case 500 includes a rear case body 510 and a second side plate 520, the second side plate 520 extends along an edge of the rear case body 510 and protrudes out of the rear case body 510 toward one side of the display panel 100, that is, the rear case body 510 is located at the rear side of the rear panel body 310, the second side plate 520 protrudes out of the front side of the rear case body 510, and the second side plate 520 is enclosed outside the first side plate 320.

Thus, the backplate body 310 and the rear case body 510 enclose a sound cavity Q, and a part of the actuator body 410 extends into the sound cavity Q, i.e., the vibration plate 430 is located between the backplate body 310 and the rear case body 510.

Wherein, the sound outlet P may be formed on the rear case body 510 or the second side plate 520. In some embodiments, the sound outlet P is located between the first side plate 320 and the second side plate 520.

Here, the sound outlet P may extend along a circumferential direction of the display device 10, that is, the sound outlet P is formed at each of four sides of the display device 10.

Alternatively, the sound outlet P may be provided at a partial position of a certain side. For example, when the opening of the resonant cavity X is located on the left side, the opening of the resonant cavity X extends less than the length of the left side edge of the display device 10. That is, when the closing structure is not provided at the position of the first side plate 320 and the second side plate 520, a gap is formed between the first side plate 320 and the second side plate 520 at the position, and the gap constitutes the sound outlet P. The position and the extension length of the sound outlet P may be set as needed, for example, one sound outlet P is provided on each of the day side, the ground side, the left side, and the right side of the display apparatus 10.

It can be understood that, when the sound outlet P is not disposed at a part of the first side plate 320 and the second side plate 520, the gap between the first side plate 320 and the second side plate 520 at the part still needs to be sealed, for example, a rubber plug or a protruding bent portion is disposed at the first side plate 320 or the second side plate 520, so as to prevent foreign matters such as dust from entering the gap between the back plate 300 and the rear case 500.

The sound outlet P may face different directions according to the protruding directions of the first side plate 320 and the second side plate 520. For example, when the first side plate 320 and the second side plate 520 both protrude in the thickness direction of the display device 10, the sound outlet P faces the front of the display device 10 (as shown in fig. 11 to 12). When the second side plate 520 protrudes along the side of the display device 10, the sound outlet P may face the lateral front (as shown in fig. 13).

In consideration of the larger size of the display device 10, in some embodiments, referring to fig. 2 to 4, the display device 10 further includes a plurality of second adhesive members 820, and the second adhesive members 820 may be double-sided adhesive, foam, or the like. A plurality of second bonds 820 intervals set up for connect board body 211 and backplate 300 in a poor light, so that the interval of the different positions between board body 211 in a poor light and the backplate 300 all is located predetermineeing the within range, that is to say, the different positions department of board body 211 in a poor light has comparatively even vibration range, avoids the board 210 in a poor light vibration in-process to generate the noise.

And through setting up second bonding 820, can also constitute spacingly to board 210 in a poor light, avoid display device 10 to assemble the completion back, board 210 in a poor light takes place to warp to influence board 210 in a poor light vibration sound production.

In consideration of the higher hardness of the back plate 300, in some embodiments, the hardness of the second adhesive 820 is less than that of the first adhesive 810, that is, the hardness of the second adhesive 820 is less, so that the backlight plate 210 can be limited, a vibration and fluctuation space can be left for the backlight plate 210, and the low frequency response of the backlight plate 210 is prevented from being affected.

The second adhesive members 820 may be disposed at intervals of dots (not shown). In some embodiments, referring to fig. 2, the plurality of actuators 400 are spaced apart in the horizontal direction, and the second adhesive member 820 may be in the shape of a strip and extend in the vertical direction, in which case, the actuators 400 on both sides of the second adhesive member 820 have less influence on each other. That is, when the left actuator 400 of the second adhesive member 820 vibrates, the backlight plate 210 located at the right side of the second adhesive member 820 may not vibrate under the driving of the left actuator 400.

It is understood that the second adhesive member 820 may extend to the same height as the display device 10.

In some embodiments, according to the size of the display device 10, for example, when the size of the display device 10 is large, a plurality of second adhesives 820 extending in the horizontal direction may be further provided, and the extending length and the extending direction of the second adhesives 820 are not provided in this embodiment.

The embodiments or implementation modes in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

In the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display device, comprising:

a display panel for displaying image information;

a back plate for supporting the display panel;

the exciter is positioned on one side, facing the back plate, of the display panel, the exciter comprises an exciter body and an actuating piece, the exciter body and the actuating piece are both connected with the display panel, and the actuating piece is used for driving the display panel to vibrate and sound.

2. The display device according to claim 1, wherein the actuator further comprises a plurality of resilient legs connected to the actuator body, the plurality of resilient legs being arranged at intervals along a circumferential direction of the actuator body, the resilient legs protruding from an outer wall surface of the actuator body and being connected to the display panel.

3. A display device as claimed in claim 2, characterized in that the resilient legs extend around the circumference of the actuator body or in the radial direction of the actuator body.

4. The display device of claim 2, wherein the display device comprises an elastomeric buffer connecting the elastomeric legs to the display panel.

5. The display device according to any of claims 1-4, wherein the actuator further comprises a membrane connected to the actuator, the membrane being configured to vibrate and emit sound under the actuation of the actuator.

6. The display device according to claim 5, characterized in that the display device further comprises:

the rear shell is located on one side, away from the display panel, of the back plate, a sound outlet cavity is defined between the rear shell and the back plate, the vibrating reed is located in the sound outlet cavity, and a sound outlet is further formed between the rear shell and the back plate.

7. The display device according to claim 5, wherein the actuator comprises:

and a connecting rod extending in a thickness direction of the display device, the actuating member and the vibrating plate being connected to both ends of the connecting rod, respectively.

8. The display device according to claim 7, wherein the connection rod is a plastic rod or an aluminum rod.

9. The display device according to claim 6, wherein the driver is plural, and plural drivers are provided at intervals;

the display device further comprises a partition, wherein two ends of the partition are respectively connected with the back plate and the rear shell so as to divide the sound outlet cavity into a plurality of resonant cavities, at least one exciter is arranged in each resonant cavity, and each resonant cavity is correspondingly provided with the sound outlet.

10. The display device of claim 6, wherein the backplane comprises a backplane body and a first side plate extending along an edge of the backplane body and protruding out of the backplane body towards a side of the display panel;

the rear shell comprises a rear shell body and a second side plate, wherein the second side plate extends along the edge of the rear shell body and protrudes out of the rear shell body towards one side of the display panel;

the vibrating reed is located between the back plate body and the rear shell body, the second side plate is arranged on the outer side of the first side plate in a surrounding mode, and the sound outlet is located between the first side plate and the second side plate.

11. A display device as claimed in any one of claims 1 to 4, characterized in that the display device comprises a backlight module comprising:

the actuator comprises an exciter body, a backlight plate, a driving part and an actuator, wherein the exciter body and the actuator are connected with the backlight plate;

the display panel is positioned on the light-emitting side of the fluorescent film assembly, the backlight plate is positioned on the light-in side of the fluorescent film assembly, the edge of the display panel is hermetically connected with the edge of the backlight plate body, so that a closed gas layer is formed between the display panel and the backlight plate body, and the light source is positioned in the gas layer.

12. The display device as claimed in claim 11, further comprising a stiffener attached to a side of the backlight panel body facing away from the display panel, wherein the actuator is connected to the stiffener, and wherein a damping of the stiffener is greater than a damping of the backlight panel body.

13. The display device according to claim 11, wherein the display device comprises a first adhesive member having an adhesive property, the first adhesive member extends along an edge of the backlight panel body, and the display panel and the backlight panel body are adhesively fixed by the first adhesive member.

14. The display device according to claim 13, further comprising a plurality of second adhesives, wherein the plurality of second adhesives are disposed at intervals and used for connecting the backlight plate body and the back plate, so that the distances between different positions of the backlight plate body and the back plate are within a preset range.

15. The display device according to claim 14, wherein a hardness of the second adhesive is less than a hardness of the first adhesive.

16. The display device according to claim 11, further comprising a second elastic support, wherein one end of the second elastic support is connected to the backlight plate body, and the other end of the second elastic support abuts against the display panel.