WO2023010793A1

WO2023010793A1 - Display screen and spliced display screen

Info

Publication number: WO2023010793A1
Application number: PCT/CN2021/142894
Authority: WO
Inventors: 胡晓刚; 袁海江
Original assignee: 惠科股份有限公司
Priority date: 2021-08-06
Filing date: 2021-12-30
Publication date: 2023-02-09
Also published as: CN113345340B; CN113345340A

Abstract

A display screen (900). The display screen (900) comprises a display panel (100), a printed circuit board (200), and a frame body (300); the printed circuit board (200) is bound and connected to the display panel (100) by means of a chip on film; the frame body (300) is disposed outside the display panel (100); and the printed circuit board (200) is disposed between the display panel (100) and the frame body (300). The display screen (900) further comprises a cushioning member (400) and a protective plate (500).

Description

Displays and video walls

This application claims the priority of the Chinese patent application with the application number CN202110899001.4 and the application name "display screen and splicing display screen" submitted to the China Patent Office on August 06, 2021, the entire contents of which are incorporated in this application by reference middle.

technical field

The present application relates to the field of liquid crystal display, in particular to a display screen and a spliced display screen.

Background technique

The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

At present, in order to compete with the large-screen direct display industry using other technologies, the liquid crystal display (LCD, Liquid Crystal Display) industry has begun to continuously develop and innovate, and has produced many narrow-frame products. Large-screen display is realized through the splicing of multiple narrow-frame products. show.

The narrower and narrower frame requires design changes to the previous module structure. The printed circuit board is prone to static electricity due to leakage. If the static electricity cannot be discharged in time, it will cause static electricity to accumulate, and then electrostatic breakdown may occur. question.

application content

The purpose of this application is to provide a display screen and a spliced display screen.

The present application discloses a display screen. The display screen includes a display panel, a printed circuit board and a frame. The printed circuit board is bound and connected to the display panel through a chip-on-chip film. On the outside of the panel, the printed circuit board is arranged between the display panel and the frame, and the display screen also includes a buffer and a protection plate, and the buffer is arranged between the printed circuit board and the frame Between, the buffer member is fixed on the printed circuit board, the buffer member is made of elastic conductive material; the protection plate is made of conductive material, and the protection plate is arranged on the buffer member and between the frames.

The application also discloses a display screen, which includes a display panel, a printed circuit board, a frame, a buffer, a protective plate, a backlight module, a diffuser plate, an optical film and a plastic frame, and the printed circuit board Bonded and connected to the display panel through a chip-on-chip film; the frame body includes a front frame and a back plate, the front frame is arranged on the outside of the display panel and surrounds the display panel, and the printed circuit board is arranged on Between the display panel and the front frame, the back plate includes a bottom plate and a side plate, the side plate is fixed to the bottom plate, the bottom plate is arranged on the light incident surface of the display panel, and the side plate It is arranged on the side of the front frame close to the display panel; the buffer is arranged between the printed circuit board and the front frame, the buffer is fixed on the printed circuit board, and the buffer The parts are made of elastic conductive material; the protective plate is made of conductive material, and the protective plate is arranged between the buffer member and the frame body; the backlight module is arranged on the back plate , the backlight module is located on one side of the light incident surface of the display panel; the diffusion plate is arranged between the backlight module and the display panel; the optical film is arranged between the diffusion plate and the display panel Between the display panels; the plastic frame is sleeved on the outside of the diffusion plate and the optical film to fix the diffusion plate and the optical film, and the back plate is arranged on the outside of the plastic frame , the back plate fixes the plastic frame; the length of the diffusion plate and the optical film is less than the length of the display panel, the edge of the optical film is provided with a limited bayonet, and the length of the diffusion plate is less than the length of the display panel. The length of the optical film, the top edge of the plastic frame is provided with a limit protrusion that is set in cooperation with the limit bayonet, the inner side of the plastic frame is provided with a circle of limit steps, and the diffusion plate limit fixed on the limit step.

The present application also discloses a spliced display screen, which includes at least two display screens, and two adjacent display screens are spliced and fixed; the frame body includes a front frame, and the two display screens pass through the two front The frames are spliced and fixed; the display screen includes a display panel, a printed circuit board and a frame body, the printed circuit board is bound and connected to the display panel through a chip-on-chip film, and the frame body is arranged outside the display panel, The printed circuit board is arranged between the display panel and the frame, and it is characterized in that the display screen also includes a buffer and a protection plate, and the buffer is arranged between the printed circuit board and the frame Between the bodies, it is fixed on the printed circuit board, the buffer is made of elastic conductive material; the protection plate is made of conductive material, and the protection plate is arranged between the buffer and the frame between.

In this application, a buffer is provided between the printed circuit board and the frame, and the buffer is made of elastic conductive material. Therefore, the conductive material allows static electricity to be released to the frame made of metal material, avoiding the impact of the printed circuit board. There are problems such as static electricity accumulation; it is elastic, so that the ground leakage copper can be closely connected to the frame without misalignment and other problems, and it has a buffering effect; on this basis, this application also sets up a protection made of conductive materials. The protective plate, which is arranged between the buffer and the frame, has a protective effect, which allows the buffer to be made thinner, so that the printed circuit board with the buffer will not be too thick, which will increase the transportation cost problems; and it can avoid problems such as poor contact that may occur when the protective board is directly in contact with the leaking copper.

Description of drawings

The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation of the present application, and explain the principle of the present application together with the text description. Apparently, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without any creative effort. In the attached picture:

Fig. 1 is the front view of a kind of display screen of an embodiment of the present application;

Fig. 2 is a sectional view at A-A place in Fig. 1;

Fig. 3 is the enlarged view of place A in Fig. 2;

Fig. 4 is an exploded view of the overall structure of a display screen according to an embodiment of the present application;

Fig. 5 is a schematic structural view of a protective plate in an embodiment of the present application;

Fig. 6 is a schematic structural view of a display screen with the front frame removed according to an embodiment of the present application;

Figure 7 is an enlarged view at B in Figure 6;

Fig. 8 is a schematic structural diagram of a backplane and a protection board in an embodiment of the present application;

Figure 9 is an enlarged view at C in Figure 7;

Fig. 10 is a schematic structural diagram of a buckle in an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a spliced display screen according to an embodiment of the present application.

Detailed ways

It should be understood that the terminology and specific structural and functional details disclosed herein are representative only for describing specific embodiments, but the application can be embodied in many alternative forms and should not be construed as merely Be limited by the examples set forth herein.

In the description of the present application, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating relative importance, or implicitly indicating the quantity of indicated technical features. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features; "plurality" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, possible presence or addition of one or more other features, integers, steps, operations, units, components and/or combinations thereof.

Also, Center, Horizontal, Top, Bottom, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer The terms indicating the orientation or positional relationship are described based on the orientation or relative positional relationship shown in the drawings, and are only for the convenience of describing the simplified description of the application, rather than indicating that the referred device or element must have a specific orientation. , are constructed and operate in a particular orientation and therefore are not to be construed as limiting the application.

In addition, unless otherwise clearly specified and limited, the terms "mounted", "connected" and "connected" should be interpreted in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection , can also be an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

The present application will be described in detail below with reference to the accompanying drawings and optional embodiments. It should be noted that, on the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form a new embodiment. .

Fig. 1 is the front view of a kind of display screen of an embodiment of the present application, Fig. 2 is the sectional view of A-A place in Fig. 1, Fig. 3 is the enlarged view of A place in Fig. 2, as Fig. 1, Fig. 2 and As shown in FIG. 3, as the first embodiment of the present application, a display screen is disclosed. The display screen includes a display panel 100, a printed circuit board 200, and a frame 300. The printed circuit board 200 is bound by a chip-on-chip film. fixedly connected to the display panel 100, the frame body 300 is arranged outside the display panel 100, and the printed circuit board 200 is arranged between the display panel 100 and the frame body 300; the display screen is also Including a buffer member 400 and a protective plate 500, the buffer member 400 is arranged between the printed circuit board 200 and the frame body 300, the frame body 300 is made of conductive material and fixed on the printed circuit board 200 , the buffer member 400 is made of elastic conductive material; the protective plate 500 is disposed between the buffer member 400 and the frame body 300 , and the protective plate 500 is made of conductive material.

In this application, a buffer member 400 is provided between the printed circuit board 200 and the frame body 300, and the buffer member 400 is made of an elastic conductive material. Therefore, the conductive material allows static electricity to be released to the frame body 300 made of metal materials, Avoid problems such as static electricity accumulation on the printed circuit board 200; it has elasticity, so that the ground leakage copper can be closely connected to the frame body 300 without problems such as misalignment, and has a buffering effect; on this basis, the application also sets the use of The protection plate 500 made of conductive material, the protection plate 500 is arranged between the buffer member 400 and the frame body 300, has the function of protection, which makes the buffer member 400 can be made thinner, and then makes the printing with the buffer member 400 The circuit board 200 will not be too thick to increase the transportation cost; it can also avoid the problem of poor contact that may occur when the protection board 500 is directly in contact with the ground leakage copper.

Among them, in order to ensure the contact effect of ground leakage copper, the buffer member 400 is generally pasted and fixed on the printed circuit board 200, if the buffer member 400 is too thick, then when packing, the printed circuit board 200 will be obviously larger than the display panel. The thickness of 100 places will lead to a reduction in the number of boxes that can be packed. The reduction in the number of boxes will not only increase the material cost intuitively, but also increase the labor cost in a disguised form, and the step difference between the printed circuit board 200 and the display panel 100 will increase. However, it is easy to cause problems such as falling off or warping of the printed circuit board 200; the protection plate 500 is provided in this application, and while ensuring the grounding effect, the buffer member 400 can be made thinner, so that the printed circuit board with the buffer member 400 The board 200 will not be too thick to cause the problem of increased transportation costs.

Wherein, the printed circuit board 200 can be fixed on the backplane 320 through buckles 910 , and of course, can be fixed on other frame bodies 300 .

Fig. 4 is an exploded view of the overall structure of a display screen according to an embodiment of the present application. As shown in Fig. 4, in combination with Fig. 300, the display screen of the present application also includes a backlight module, a diffusion plate 600, an optical film 700 and a plastic frame 800, the backlight module is arranged on the backplane 320, and is located at the entrance of the display panel 100 One side of the light surface is used to provide a light source for the display screen; the diffusion plate 600 is arranged between the backlight module and the display panel 100; the optical film 700 is arranged on the diffusion plate 600 and the display panel 100; the plastic frame 800 is sleeved on the outside of the diffusion plate 600 and the optical film 700 to fix the diffusion plate 600 and the optical film 700, the back plate 320 is arranged on the outside of the plastic frame 800 for fixing the plastic frame 800;

The lengths of the diffuser plate 600 and the optical film 700 are shorter than the length of the display panel 100 , the edge of the optical film 700 is provided with a limited bayonet, and the length of the diffuser plate 600 is shorter than that of the optical film 700 Length, the top edge of the plastic frame 800 is provided with a limit column that cooperates with the limit bayonet, the inner side of the plastic frame 800 is provided with a circle of limit steps, and the diffusion plate 600 is limited and fixed to the The limiting step, the limiting step and the limiting column of the plastic frame 800 can be used to fix the optical film 700 and the diffusion plate 600 to achieve a good fixing effect, wherein, in this embodiment, the optical film The four sides of the 700 are provided with limited bayonets, and the four sides of the plastic frame 800 are provided with limited posts corresponding to the limited bayonets, so that when the optical film 700 is installed on the plastic frame 800, the optical The diaphragm 700 can be limited on the plastic frame 800 and will not move.

The printed circuit board 200 of the present application can be grounded through the backplane 320, can also be grounded through the front frame 310, and can also be other grounding designs, as follows, in order to introduce this application more clearly, the printed circuit board 200 is used to pass through the front frame 310 grounding is used as an example to illustrate this application:

As an improvement of the first embodiment of the present application, the frame body 300 includes a front frame 310 and a back plate 320, the front frame 310 is arranged around the display panel 100, and the back plate 320 includes a bottom plate 321 and a side plate 322, the bottom plate 321 is attached to the light incident surface of the display panel 100, the side plate 322 is fixed to the bottom plate 321, and the side plate 322 is arranged on the front frame 310 close to the One side of the display panel 100, and the side panel 322 is retracted relative to the edge of the display panel 100, the printed circuit board 200 is arranged between the side panel 322 and the front frame 310 and is connected to the The side plate 322 is fixed, the buffer member 400 is arranged between the printed circuit board 200 and the front frame 310, and the side plate 322 is inclined relative to the front frame 310, so that the side plate 322 There is a space for accommodating the printed circuit board 200. The printed circuit board 200 is arranged on the side, which can be conveniently grounded through the front frame 310. In addition, the area of the front frame 310 corresponding to the protection plate 500 and the buffer member 400 can be provided with a concave Groove, to facilitate the fixing of the protective plate 500, the protective plate 500 can be arranged in the groove, so set, can help to reduce the total thickness of the printed circuit board 200 and the front frame 310; The setting of protrusions, under the condition that the distance between the printed circuit board 200 and the front frame 310 is fixed, can reduce the thickness of the buffer member 400 and the protection plate 500, while ensuring the grounding effect, so that the buffer member 400 can be made more Thin, so that the printed circuit board 200 with the buffer member 400 will not be too thick to cause the problem of increased transportation costs.

This embodiment introduces the design that the printed circuit board 200 is arranged on the side of the display panel 100, but it is not limited to this design, and the printed circuit board 200 is also possible to be arranged at other places in the display screen.

As an improvement of the first embodiment of the present application, the buffer member 400 includes conductive foam, and the conductive foam is arranged between the ground drain copper and the protective plate 500, and the conductive foam is connected to the protective plate 500. A conductive double-sided adhesive is provided between the ground leakage copper, and a conductive double-sided adhesive is also provided between the conductive foam and the protective plate 500. The thickness of the conductive foam is 3-5mm, and the conductive foam The length of the foam is 12-18mm, and the width is 4-6mm. The length of the conductive foam is greater than or equal to the length of the ground drain copper, and the width of the conductive foam is greater than or equal to the width of the ground drain copper. , so that the conductive foam has a certain buffer capacity and will not be misaligned with the ground leakage copper, wherein, in this embodiment, the thickness of the conductive foam is 4mm, the length is 15mm, and the width is 4.5mm , the conductive foam makes the printed circuit board 200 not easily scratched, and the grounding copper is not easy to be damaged; the conductive foam is larger than the size of the grounding copper, which can ensure the effect of grounding; and the conductive foam can hardly be increased The fixed space is connected to the ground drain copper, therefore, the printed circuit board 200 does not need to increase the area to make up for the additional layout space occupied by screws and the like.

Fig. 5 is a schematic structural diagram of a protective plate 500 in an embodiment of the present application, as shown in Fig. 5, combined with Fig. 1 to Fig. 4, as the second embodiment of the present application, the main difference of the present application compared with the first embodiment In that: the protective plate 500 includes a fixed plate 510 and a stopper 520, the fixed plate 510 is located on one side of the light incident surface of the display panel 100 and is arranged parallel to the light incident surface, the fixed plate 510 is fixed On the outer surface of the bottom plate 321, the stopper 520 is fixed on one end of the fixed plate 510 close to the printed circuit board 200, and is perpendicular to the fixed plate 510, the stopper 520 is arranged on the Between the buffer member 400 and the front frame 310, the front frame 310 can be made of metal; the number of the buffer member 400 is at least two, and the stopper 520 is provided with at least two, correspondingly arranged on the Between the buffer member 400 and the front frame 310, the fixing plate 510 fixes a plurality of stoppers 520 together, which can facilitate the fixing of the stoppers 520; The fixing plate 510 is on the outer surface of the bottom plate 321 of the back plate 320 to fix the protective plate 500 to achieve a better fixing effect.

As an improvement of the second embodiment of the present application, the number of the stoppers 520 is greater than the number of the buffer members 400, and the setting of multiple stoppers 520 facilitates the corresponding stoppers of different types of printed circuit boards 200 520 is provided with a buffer member 400. In addition, two buffer members 400 can be provided corresponding to one printed circuit board 200, which are evenly arranged on the printed circuit board 200. In this design, on the one hand, it can make the force uniform and improve the use of the buffer member 400. On the other hand, when one of the buffer members 400 is in poor contact, the other buffer member 400 can still complete the grounding work to avoid problems such as static electricity accumulation and electrostatic breakdown. Wherein, in this embodiment, the buffer member 400 The number is two, the stopper 520 is set corresponding to the buffer member 400, and the two buffer members 400 are evenly distributed on the printed circuit board 200, so that the two buffer members 400 are evenly stressed, To extend the service life of the buffer, this embodiment is only shown as an example, and is not limited to the number of the stopper 520 and the buffer member 400, but the number of the buffer member 400 and the stopper 520 is set according to actual needs quantity.

Fig. 6 is a schematic structural view of a display screen without the front frame 310 according to an embodiment of the present application, and Fig. 7 is an enlarged view of B in Fig. 6, as shown in Fig. 6 and Fig. 7, combined with Fig. 1 to Fig. 5 , as an improvement of the second embodiment of the present application, the front frame 310 is arranged perpendicular to the light incident surface of the display panel 100, the display screen 900 further includes a plurality of screws, and the stopper 520 is provided with There is a first threaded hole 521, and one screw passes through the front frame 310 and is threadedly connected with the first threaded hole 521 of the block 520, so that the front frame 310 is fixed to the block 520, the The side plate 322 is provided with a second threaded hole 322a, and one screw passes through the front frame 310 and is threadedly connected with the second threaded hole 322a of the side plate 322, so that the front frame 310 and the side plate 322, the starting end of the first threaded hole 521 and the starting end of the second threaded hole 322a are on the same vertical plane, and the back plate 320 and the stopper 520 are fixed to the front frame 310 by screws , and the starting ends of the first threaded hole 521 and the second threaded hole 322a are on the same vertical plane, the front frame 310 is provided with a mounting structure for the first threaded hole 521 and the second threaded hole 322a, such as a mounting channel Holes, etc., the second threaded hole 322a on the side plate 322 of the back plate 320, and the first threaded hole 521 of the block 520 are set correspondingly, so that the back plate 320, the block 520 and the front frame 310 When fixed, the contact surfaces are on the same vertical plane, which improves the stabilizing effect of fixing, and plays a positioning role between them. When the first threaded hole 521 is fixed, the installation of the second threaded hole 322a and the front frame 310 can be basically determined. The through holes are aligned, and there is no need for time-consuming and laborious alignment, which is convenient for installation. Wherein, in this embodiment, the buffer member 400 is correspondingly arranged on the first threaded hole 521 .

Fig. 8 is a schematic structural view of the backplane 320 and the protection board 500 in an embodiment of the present application, and Fig. 9 is an enlarged view of C in Fig. 8, as shown in Fig. 8 and Fig. 9, as the second embodiment of the present application As an improvement, the bottom plate 321 is provided with a third threaded hole 321a, and the third threaded hole 321a is provided with a limiting protrusion 321b, and the protective plate 500 is provided with a limiting fixing hole 511, and the limiting The fixing hole 511 is set corresponding to the third threaded hole 321a, and the fixing plate 510 is provided with a limiting through hole 512, which is set corresponding to the limiting protrusion 321b, for fixing the fixing plate 510 and the back plate 320;

When in use, first align the limiting through hole 512 on the fixing plate 510 with the limiting protrusion 321b on the bottom plate 321, and cooperate the limiting protrusion 321b with the limiting through hole 512, so that the limiting fixing hole 511 can be aligned with the limiting through hole 512. Corresponding to the third threaded hole 321a, the installation can be completed by connecting and fixing the fixing plate 510 and the back plate 320 with screws at this time, and the fixing plate 510 and the bottom plate 321 can be fixedly installed without de-alignment of holes one by one. The installation efficiency is improved, and the limiting fixing hole 511 and the limiting protrusion 321b also play an auxiliary role in fixing, reducing the force on the screw and reducing the risk of the screw being deformed and difficult to disassemble.

Fig. 10 is a schematic structural diagram of the buckle 910 in an embodiment of the present application. As shown in Fig. 10, in combination with Fig. 1 to Fig. 9, as an improvement of the second embodiment of the present application, the display screen also includes a card Buckle 910, the buckle 910 is used to fix the printed circuit board 200 to ensure the stability of the display screen during transportation, the buckle 910 is installed on the side plate 322, and the side plate 322 is provided with a fixed hole 322b and positioning hole 322c, the buckle 910 is provided with an elastic hook 911 and a positioning post 913 matching the positioning hole 322c, the elastic hook 911 is compressible, when the elastic hook 911 is squeezed It can pass through the fixing hole 322b when pressed, and cannot pass through the fixing hole 322b when the elastic claw 911 is not squeezed. Place the limit groove 912 of the printed circuit board 200, the printed circuit board 200 is placed in the limit groove 912 so that it is fixed with the buckle 910, and used in conjunction with the buffer member 400 to ensure that the display screen Stability during transportation, to prevent the printed circuit board 200 from being damaged during transportation. When installing the buckle 910, the positioning column 913 is first matched with the positioning hole 322c, so that the buckle 910 is aligned with the positioning hole 322c. The side plate 322 is preliminarily positioned, and then the elastic hook 911 is squeezed and then inserted into the fixing hole 322b and stretched out. After the elastic hook 911 is deformed, it is locked and fixed with the fixing hole 322b. The installation of the buckle 910 and the side plate 322 is completed.

As the third embodiment of the present application, the main difference between this embodiment and the above embodiments is that the protective plate 500 only includes a stopper 520, and the stopper 520 is arranged on the printed circuit board 200 and the front frame. Between 310, only the stopper 520 is set in this application, while ensuring the thin effect of the cushioning member 400, it reduces the waste of materials, and at the same time, compared with other embodiments, the thickness of a fixed plate 510 is reduced , which is also conducive to making the thickness of the display screen thinner.

As an improvement of the third embodiment of the present application, the display screen further includes an elastic member, the elastic member is arranged between the stopper 520 and the buffer member 400, and the elastic member is connected to the protection The board 500 is fixedly connected, which increases the buffer performance of the buffer member 400, so that the printed circuit board 200 has better buffer capacity when in contact with the buffer member 400, and the setting of the elastic member also makes the buffer member The thickness of 400 can be further reduced, wherein, in this embodiment, the elastic member is a compression spring, the compression spring is welded on the protection plate 500, the protection plate 500 is made of metal material, and the The size of the compression spring is smaller than that of the buffer member 400 so that the compression spring will not be misaligned with the buffer member 400 .

Fig. 11 is a schematic structural diagram of a spliced display screen according to an embodiment of the present application. As shown in Fig. 11, as a fourth embodiment of the present application, a spliced display screen is disclosed, including at least two For the display screen 900 described in the example, two adjacent display screens 900 are spliced and fixed; the frame body 300 includes a front frame 310, and the two display screens 900 are spliced and fixed through the two front frames 310, so as to The splicing display device is configured to realize large-screen display.

It should be noted that the concept of the present application can form a lot of embodiments, but the space of the application documents is limited and cannot be listed one by one. Therefore, on the premise of no conflict, the above-described embodiments or technologies Features can be combined arbitrarily to form new embodiments, and the original technical effects will be enhanced after each embodiment or technical feature is combined.

The above content is a further detailed description of the present application in conjunction with specific optional implementation modes, and it cannot be deemed that the specific implementation of the present application is limited to these descriptions. For those of ordinary skill in the technical field to which this application belongs, some simple deduction or substitutions can be made without departing from the concept of this application, which should be deemed to belong to the protection scope of this application.

Claims

A display screen, the display screen includes a display panel, a printed circuit board and a frame, the printed circuit board is bound and connected to the display panel through a chip-on-chip film, the frame is arranged outside the display panel, the The printed circuit board is arranged between the display panel and the frame, and the display screen also includes:

a buffer, arranged between the printed circuit board and the frame, the buffer is fixed on the printed circuit board, and the buffer is made of an elastic conductive material; and

The protective plate is made of conductive material and is arranged between the buffer member and the frame body.
The display screen according to claim 1, wherein the buffer member comprises conductive foam, the length of the conductive foam is greater than or equal to the length of the grounding copper on the printed circuit board, and the width of the conductive foam is greater than It is equal to the width of ground drain copper on the printed circuit board.
The display screen according to claim 2, wherein the conductive foam has a thickness of 3-5 mm, a length of 12-18 mm, and a width of 4-6 mm.
The display screen according to claim 2, wherein the conductive foam is arranged between the ground drain copper and the protective plate, and a conductive double-sided surface is provided between the conductive foam and the ground drain copper. Adhesive, and a conductive double-sided adhesive is also provided between the conductive foam and the protective plate.
The display screen according to claim 1, wherein the protective plate comprises a fixing plate and a stopper, and the fixing plate is fixed on one side of the light-incident surface of the display panel and arranged parallel to the light-incident surface , the stopper is fixed on one end of the fixed plate close to the printed circuit board, and is perpendicular to the fixed plate;
The display screen according to claim 5, wherein the number of the buffer members is at least two, the number of the stoppers is at least two, and the stoppers are correspondingly arranged on the buffer member and the frame between.
The display screen according to claim 5, wherein the frame body includes a front frame and a back plate, the front frame is arranged around the display panel, the back plate includes a bottom plate and side plates, and the bottom plate is attached to On the light incident surface of the display panel, the side plate is fixed to the bottom plate, the side plate is arranged on the side of the front frame close to the display panel, and the side plate is opposite to the display panel The edges of the printed circuit board are retracted, the printed circuit board is arranged between the side board and the front frame and fixed with the side board, and the buffer member is arranged between the printed circuit board and the front frame.
The display screen according to claim 5, wherein the display screen further comprises an elastic member, the elastic member is arranged between the stopper and the buffer member, and is fixed to the stopper.
The display screen according to claim 7, wherein the display screen further comprises a plurality of screws, the stopper is provided with a first threaded hole, and one of the screws passes through the connection between the front frame and the stopper The first threaded hole is threaded, so that the front frame is fixed to the stopper;

The side plate is provided with a second threaded hole, and one screw passes through the front frame and is threadedly connected with the second threaded hole of the side plate, so that the front frame and the side plate are fixed, the The starting end of the first threaded hole and the starting end of the second threaded hole are on the same vertical plane.
The display screen according to claim 7, wherein the front frame is arranged perpendicular to the light incident surface of the display panel.
The display screen according to claim 7, wherein a third threaded hole is provided on the bottom plate, a limiting protrusion is provided beside the third threaded hole, a limiting fixing hole is provided on the protective plate, and the limiting The position fixing hole is set corresponding to the third threaded hole, and the limit through hole is set on the fixed plate, and the limit through hole is set corresponding to the limit protrusion.
The display screen according to claim 7, wherein the display screen further comprises buckles, the buckles are installed on the side plates, the side plates are provided with fixing holes and positioning holes, and the buckles There are elastic claws and positioning columns matching the positioning holes, the elastic claws are matched with the fixing holes, and the buckle is provided with a limiter for placing printed circuit boards on the other side of the elastic claws. The position slot, the printed circuit board is located in the position limit slot.
The display screen according to claim 1, wherein the protective plate only includes a stopper, and the stopper is disposed between the printed circuit board and the frame body.
The display screen according to claim 13, wherein the display screen further comprises an elastic member, the elastic member is arranged between the stopper and the buffer member, and the elastic member is fixedly connected to the stopper .
The display screen according to claim 14, wherein the elastic member is a compression spring, the compression spring is welded on the stopper, and the area of the side of the compression spring abutting the buffer member is smaller than that of the buffer member. The buffer member is close to the area of the side of the stopper.
The display screen according to claim 1, wherein the frame body comprises a backboard, and the display screen further comprises:

The backlight module is arranged on the backplane and is located on one side of the light incident surface of the display panel;

a diffusion plate arranged between the backlight module and the display panel;

an optical film disposed between the diffusion plate and the display panel; and

A plastic frame is sleeved on the outside of the diffusion plate and the optical film to fix the diffusion plate and the optical film, and the back plate is arranged on the outside of the plastic frame to fix the plastic frame;

The lengths of the diffuser plate and the optical film are shorter than the length of the display panel, the edge of the optical film is provided with a limited bayonet, the length of the diffuser plate is shorter than the length of the optical film, and the plastic frame The top edge of the top edge is provided with a limit protrusion which is arranged in cooperation with the limit bayonet, and a circle of limit steps is provided on the inner side of the plastic frame, and the diffusion plate is limited and fixed on the limit steps.
A display screen comprising:

display panel;

A printed circuit board, the printed circuit board is bound and connected to the display panel through a chip-on-chip film;

A frame body, the frame body includes a front frame and a back plate, the front frame is arranged outside the display panel and surrounds the display panel, and the printed circuit board is arranged between the display panel and the front frame Between, the back plate includes a bottom plate and a side plate, the side plate is fixed to the bottom plate, the bottom plate is arranged on the light incident surface of the display panel, and the side plate is arranged on the front frame close to the display panel. one side of the panel;

a buffer, the buffer is arranged between the printed circuit board and the front frame, the buffer is fixed on the printed circuit board, and the buffer is made of elastic conductive material;

a protective plate, made of conductive material, arranged between the buffer member and the frame;

A backlight module, the backlight module is arranged on the backplane and is located on one side of the light incident surface of the display panel;

a diffusion plate, the diffusion plate is arranged between the backlight module and the display panel;

an optical film disposed between the diffusion plate and the display panel; and,

The plastic frame is sleeved on the outside of the diffusion plate and the optical film to fix the diffusion plate and the optical film, the back plate is arranged on the outside of the plastic frame, and the back plate fixes the Plastic frame;

The lengths of the diffuser plate and the optical film are shorter than the length of the display panel, the edge of the optical film is provided with a limited bayonet, the length of the diffuser plate is shorter than the length of the optical film, and the plastic frame The top edge of the top edge is provided with a limit protrusion which is arranged in cooperation with the limit bayonet, and a circle of limit steps is provided on the inner side of the plastic frame, and the diffusion plate is limited and fixed on the limit steps.
A spliced display screen, comprising at least two display screens, and two adjacent display screens are spliced and fixed;

The frame body includes a front frame, and the two display screens are spliced and fixed by the two front frames;

The display screen includes a display panel, a printed circuit board and a frame, the printed circuit board is bound and connected to the display panel through a chip-on-chip film, the frame is arranged outside the display panel, and the printed circuit board It is arranged between the display panel and the frame, wherein the display screen also includes:

a buffer, arranged between the printed circuit board and the frame, and fixed to the printed circuit board, the buffer is made of an elastic conductive material; and

The protective plate is made of conductive material and is arranged between the buffer member and the frame body.
The spliced display screen according to claim 18, wherein the protective plate comprises a fixing plate and a stopper, and the fixing plate is fixed on one side of the light-incident surface of the display panel and is parallel to the light-incident surface It is provided that the stopper is fixed on one end of the fixed plate close to the printed circuit board and is perpendicular to the fixed plate, the frame body includes a front frame and a back plate, and the front frame surrounds the display panel It is provided that the back plate includes a bottom plate and a side plate, the bottom plate is attached to the light incident surface of the display panel, the side plate is fixed to the bottom plate, and the side plate is arranged on the front frame close to the One side of the display panel, and the side panel is retracted relative to the edge of the display panel, the printed circuit board is arranged between the side panel and the front frame and fixed with the side panel, so The buffer member is arranged between the printed circuit board and the front frame, the stopper is fixedly connected to the front frame, the fixed plate is fixedly connected to the back plate, and the protective plate is made of metal material become.