WO2022012331A1

WO2022012331A1 - Display device

Info

Publication number: WO2022012331A1
Application number: PCT/CN2021/103539
Authority: WO
Inventors: 程宁宁; 唐志强; 崔立明; 马吉航; 杨广卿; 潘光翔; 石磊
Original assignee: 海信视像科技股份有限公司
Priority date: 2020-07-17
Filing date: 2021-06-30
Publication date: 2022-01-20
Also published as: CN116583780A

Abstract

Disclosed is a display device, comprising: a display panel (1-1) for displaying an image and comprising a display area (1a-1) and a non-display area (1b-1) located at the periphery of the display area (1a-1); an optical film (3-1) which is arranged on a light incident side of the display panel (1-1) and configured for increasing the brightness of light entering the display panel (1-1); a light uniformizing plate (5-1) which is arranged on a light incident side of the optical film (3-1) and configured for enabling light to enter the display panel (1-1) from the front side thereof; a rubber frame (4-1) which is arranged at an edge of the optical film (3-1) and comprises a supporting portion (41-1) for supporting between the optical film (3-1) and the light uniformizing plate (5-1), wherein the supporting portion (41-1) comprises a light guide surface (411-1), the light guide surface (411-1) comprises a first side (4111-1) close to the light uniformizing plate (5-1) and a second side (4112-1) close to the optical film (3-1), and the light guide surface (411-1) is inclined towards the edge of the optical film (3-1) from the first side (4111-1) to the second side (4112-1). The display effects at an edge of the display area of the display device are not affected, and the narrow frame effect of the display device can be improved.

Description

a display device

This application requires a Chinese patent application with an application date of July 17, 2020, an application number of 202010699791.7, and the application name of "a display device", the application date of July 27, 2020, the application number of 202010733255.4, and the application name of The Chinese patent application for "a display device" and the priority of the Chinese patent application with an application date of April 22, 2021, an application number of 202120841143.0, and an application name of "display device", the entire contents of which are incorporated herein by reference middle.

technical field

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

Background technique

The "narrow bezel" of the TV means that there is no obvious frame cover on the display panel of the monitor, which makes the appearance of the TV look simple, bright and stylish. With the continuous development and maturity of the display technology field, narrow-bezel TVs are favored by consumers for their simple and stylish appearance.

SUMMARY OF THE INVENTION

The present application provides a display device, which can improve the narrow frame effect of the display device.

In some embodiments of the present application, the display device includes a plastic frame, the support portion of the plastic frame is supported between the optical film and the light-dimming plate, the support portion includes a light-guiding surface, the first side of the light-guiding surface is close to the light-diffusing plate, and the light-guiding surface The second side is close to the optical film, and the light guide surface is inclined to the edge of the optical film from the first side to the second side; in this way, the light guide surface can guide the light emitted by the uniform light plate to diverge to the edge of the optical film, which can Increase the light emitting area of the optical film, thereby increasing the effective area of the display panel that can display the image, and avoiding the black border that the image cannot be displayed in the display area boundary caused by the plastic frame entering the display area of the display panel. problem, can improve the narrow frame effect of the display device.

In some embodiments of the present application, the first side of the light guide surface is located in the display area; the second side of the light guide surface is located in the non-display area, or the second side is located in the display area and between the boundary of the display area The distance is less than 0.5mm. In this way, although one side of the plastic frame extends into the display area, the light entering the optical film from the second side of the light guide surface can cover the entire display area through the light guide effect of the light guide facing the edge of the optical film, thus improving the The narrow bezel effect of the display device.

In some embodiments of the present application, the distance between the first side of the light guide surface and the border of the display area is less than 2.5 mm, so as to prevent the first side of the light guide surface from entering the display area too much and affecting the narrow frame effect.

In some embodiments of the present application, the angle between the light guide surface and the optical film is less than or equal to 45°, so as to improve the divergence effect of the light guide surface guiding light toward the edge of the optical film.

In some embodiments of the present application, the gap between the dodging plate and the optical film is greater than or equal to 2.5 mm, so as to increase the length of the light transmission path between the dodging plate and the optical film and improve the light guiding effect of the light guide surface.

In some embodiments of the present application, the display device further includes a backplane, and the backplane includes:

The bottom plate is used to support the back of the dodging plate; the flanging is used to support the display panel; The edge is located in the receiving slot. The accommodating groove formed in this way can support and limit the dodging plate, and at the same time, the flanging can support the display panel.

In some embodiments of the present application, the plastic frame further includes a fixing part, the fixing part is connected to the side of the support part close to the edge of the display device, and the fixing part is supported on the flange, so that the plastic frame can be further supported and fixed.

In some embodiments of the present application, the side of the fixing portion facing the optical film has a raised limit portion, the optical film is provided with a limit hole, and the limit portion extends into the limit hole, so that the optical film can be fixed to the optical film through the plastic frame. The piece is further limited and fixed.

In some embodiments of the present application, the display device further includes: a middle frame, which is arranged on the side of the display device, and the plastic frame is arranged on the inner side of the middle frame; The panel; the outer side wall part is connected to the flat plate part and is located outside the side wall of the back plate. The display panel is supported by the flat plate portion of the middle frame, and the back plate is further limited and fixed by the outer side wall portion of the middle frame.

In some embodiments of the present application, the display device further includes: an elastic sheet for connecting the middle frame and the back plate; part of the middle frame further has an inner side wall part, the inner side wall part is connected to the flat plate part and is located inside the outer side wall part, and the back plate The side wall extends into the accommodating space between the outer side wall part and the inner side wall part; the elastic sheet is sleeved on the side wall of the back plate and clamped between the outer side wall part and the inner side wall part. The middle frame and the back plate are connected and fixed by arranging an inner side wall portion inside the outer side wall portion of the middle frame, and clamping an elastic sheet between the outer side wall portion and the inner side wall portion.

In some embodiments of the present application, the edge of the fixing portion of the plastic frame is provided with an escape notch for avoiding the inner side wall portion, and the back plate is provided with a protrusion and a notch for installing the elastic piece. The avoidance gap on the edge of the fixing part of the plastic frame has a limiting effect on the middle frame, and the elastic sheet is fixed on the back plate through the protrusion and the gap on the back plate.

According to an aspect of the present application, the present application provides a display device, the display device comprising: a display panel; a backplane, which is provided at intervals on the backside of the display panel; a flange extending from the edge of the main body part to the front side and a flange extending from the front edge of the flange to the center side of the main body part; a middle frame, arranged between the back plate and the display panel , the middle frame includes an outer baffle, a front cover and an inner baffle that are integrally connected; the outer baffle is covered on the outer side of the flange; the front cover is attached to the front of the flange side, and is attached to the back edge of the display panel; the inner baffle is covered at the inner edge of the folded edge.

According to some embodiments of the present application, the outer baffle, the front cover and the inner baffle are in a U-shaped bending structure.

According to some embodiments of the present application, the outer baffle, the front cover and the inner baffle are made of metal.

According to some embodiments of the present application, the end of the inner baffle away from the front cover plate does not have a bending structure protruding toward the outer baffle side, and the inner baffle is in the shape of a straight extending plate structure.

According to some embodiments of the present application, the middle frame includes a sky side portion and a left side portion and a right side portion respectively disposed on the left and right sides of the sky side portion; the sky side portion, the left side portion and the right side portion The side parts all include the outer baffle, the front cover and the inner baffle that are integrally connected; the top end of the left side part is welded to the left end of the sky side part, and a first weld is formed at the connection; The top end of the right side portion is connected with the right end of the sky side portion by welding, and a second welding seam is formed at the connection.

According to some embodiments of the present application, the first welding seam is formed between the left end of the front cover plate of the sky side portion and the top end of the front cover plate of the left side portion; the second welding seam is formed on the between the right end of the front cover plate of the sky side part and the top end of the front cover plate of the right side part.

According to some embodiments of the present application, the left end of the outer baffle of the sky side is integrally formed with the top end of the outer baffle of the left side, and is connected by bending; The right end is integrally formed with the top end of the outer baffle of the right side, and is connected by bending.

According to some embodiments of the present application, before bending, a first bending gap is formed between the front cover plate of the sky side portion and the front cover plate of the left side portion, and the first bending gap is V A second bending gap is formed between the front cover plate of the sky side portion and the front cover plate of the right side portion, and the second bending gap is V-shaped.

According to some embodiments of the present application, an adhesive strip is sandwiched between the front side wall of the folded edge and the rear side wall of the front cover.

According to some embodiments of the present application, the display device further includes a diffuser plate; a receiving groove is formed between the folded edge, the flanged edge and the edge of the main body part; a gap between the inner baffle and the main body part is formed There is a gap between them; the diffuser plate is arranged on the front side of the main body part, and the edge of the diffuser plate can pass through the gap between the inner baffle and the main body part, and protrude into the in the storage tank.

As can be seen from the above technical solutions, the embodiments of the present application at least have the following advantages and positive effects:

In the display device of the embodiment of the present application, a certain installation space can be formed on the front side of the back plate for the backlight assembly to be installed by using the back plate and the edge of the back plate to form a certain installation space; A middle frame is added between the plates, and the integrated connection structure of the outer baffle, the front cover and the inner baffle of the middle frame can be respectively covered on the outer side of the flange, the front side of the flange and the inner side of the flange, so that the The structure at the edge of the backplane is more stable, and can optimize the overall appearance of the display device.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are Some examples of this application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is an exploded view of a display device provided by an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a display device provided by an embodiment of the present application;

3 is another schematic cross-sectional view of a display device provided by an embodiment of the present application;

4 is a schematic structural diagram of a plastic frame provided by an embodiment of the present application;

5 is a schematic structural diagram of a middle frame provided by an embodiment of the present application;

Fig. 6 is the partial schematic diagram at A place in Fig. 5;

7 is a cross-sectional view of a certain area of a middle frame provided by an embodiment of the present application;

8 is a cross-sectional view of another region of a middle frame provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a shrapnel provided by an embodiment of the present application;

FIG. 10 is a partial structural diagram of a backplane provided by an embodiment of the present application;

Fig. 11 is a partial schematic diagram at B in Fig. 10;

FIG. 12 is a schematic structural diagram of a display device according to an embodiment of the present application;

FIG. 13 is a schematic structural diagram after removing the display panel in FIG. 12;

Figure 14 is a bottom view of Figure 13;

Fig. 15 is the enlarged structural schematic diagram of A region in Fig. 14;

FIG. 16 is a schematic structural diagram after adding a display panel in FIG. 15;

Fig. 17 is the structural representation of the middle frame of Fig. 13;

Fig. 18 is a B-B sectional view of Fig. 17;

Figure 19 is an enlarged schematic view of the C region in Figure 18;

Figure 20 is an enlarged schematic view of the D region in Figure 17;

FIG. 21 is a schematic structural diagram of the area of FIG. 19 before bending;

FIG. 22 is a schematic view of the structure of the area of FIG. 20 before bending.

Description of reference numbers:

1-1-display panel; 11-1-sky side; 12-1-left side; 13-1-right side; 14-1-ground side; 101-1-circuit board; 102-1-panel tape; 1a -1-display area; 1b-1-non-display area; 2-1-middle frame; 21-1-flat plate part; 22-1-outer wall part; 23-1-inner wall part; 3-1-optical film sheet; 31-1-limiting hole; 4-1-plastic frame; 41-1-support part; 411-1-light guide surface; 4111-1-first side; 4112-1-second side; 42- 1-fixed part; 421-1-limiting part; 422-1-connection hole; 423-1-avoidance gap; 5-1-even light plate; 6-1-reflection sheet; 7-1-light source; 8-1 -Back plate; 81-1- Bottom plate; 82-1- Flange; 83-1- Side wall; 831-1- Protrusion; 832-1- Notch; part; 92-1-first piece; 921-1-first flat part; 922-1-second flat part; 93-1-second piece; 931-1-first bayonet; 94-1-first Three pieces; 941-1-third flat plate part; 942-1-fourth flat plate part; 95-1-bump.

detailed description

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

LCD TVs usually include an LCD panel and a backlight module. According to the different light incident methods of the backlight module, the backlight module can be divided into a direct-type backlight module and an edge-type backlight module. With the development trend of thinning LCD TVs , the application of edge-type backlight modules is becoming more and more common. The edge-type backlight module usually includes a backplane, a middle frame, a plastic frame, a reflective sheet, a uniform light plate and an optical film. On the side of the narrow-frame TV, the liquid crystal panel of the narrow-frame TV can be directly fixed on the middle frame, and the plastic frame is arranged on the inner side of the middle frame and is used to support between the uniform light plate and the optical film.

However, due to the limitation of the thermal expansion of the light guide plate and the problem of black borders appearing when the edge of the plastic frame extends into the display area of the LCD panel, the frame of the LCD TV cannot be further narrowed, which affects the narrow frame effect of the LCD TV.

1 is an exploded view of a display device provided by an embodiment of the present application; FIG. 2 is a schematic cross-sectional view of a display device provided by an embodiment of the present application; and FIG. 3 is another cross-sectional view of the display device provided by an embodiment of the present application Schematic.

As shown in FIG. 1 to FIG. 3 , the display device provided in this embodiment includes a display panel 1-1 and a backlight module.

The display device includes a sky side 11-1, a left side 12-1, a right side 13-1 and a ground side 14-1, wherein the sky side 11-1 is opposite to the ground side 14-1, and the left side 12-1 and the right side 13 Opposite to -1, the sky side 11-1 is connected to one end of the left side 12-1 and the one end of the right side 13-1 respectively, and the ground side 14-1 is respectively connected to the other end of the left side 12-1 and the right side 13-1. connected at the other end.

The display panel 1-1 is located on the front side of the display device, and the display panel 1-1 is, for example, a liquid crystal panel, and the front side of the display panel 1-1 is used for displaying images. The display panel 1-1 includes a display area 1a-1 capable of effectively displaying images and a non-display area 1b-1 located at the periphery of the display area 1a-1.

A circuit board 101-1 is connected to one side of the display panel 1-1. For example, the circuit board 101-1 is a flexible circuit board FPC, and driving and display of the entire display panel 1-1 is realized through the circuit board 101-1.

As shown in FIG. 1 , like the display device, the display panel 1-1 includes a sky side 11-1, a left side 12-1, a right side 13-1 and a ground side 14-1, wherein the sky side 11-1 and the ground side 14-1 The side 14-1 is opposite, the left side 12-1 and the right side 13-1 are opposite, the sky side 11-1 is connected to one end of the left side 12-1 and the right side 13-1 respectively, and the ground side 14-1 is respectively connected to the The other end of the left 12-1 is connected to the other end of the right 13-1.

Along the light-emitting direction of the light in the display device, the backlight module sequentially includes a back plate 8-1 that plays a supporting role, a reflective sheet 6-1, a uniform light plate 5-1, an optical film 3-1, and a middle frame 2-1. , the plastic frame 4-1 and the light source 7-1 on one side of the back plate 8-1.

It should be noted that, in the display device provided in this embodiment, the backlight module may be an edge-type backlight module or a direct-type backlight module. Wherein, the homogenizing plate 5-1 in the side-illuminated backlight module is specifically a light guide plate, and the homogenizing plate 5-1 in the direct type backlight module is specifically a diffusing plate. The following descriptions are given by taking the backlight module as an edge-type backlight module.

The optical film 3-1, the uniform light plate 5-1, the reflection sheet 6-1, the plastic frame 4-1 and the back plate 8-1 also have the sky side 11-1, left side 12-1, right side 13-1 and The ground side 14-1 will not be repeated here.

The back plate 8-1 is located at the far end of the display panel 1-1, and has a supporting and carrying reflective sheet 6-1, a light homogenizer 5-1, a light source 7-1, an optical film 3-1 and a display panel 1-1. effect.

The light source 7-1 is used to generate the light and is usually arranged on one side of the display device, for example the light source 7-1 is located on the ground side 14-1 of the display device. Exemplarily, the light source 7-1 is provided in the form of a light bar. For example, the light source 7-1 is an LED light bar. The LED light bar includes a circuit board 101-1 and a plurality of LED lights located on the circuit board 101-1. The light source 7- The light emitted by 1 enters the dodging plate 5-1 from one side of the display device.

The reflection sheet 6-1 is used to reflect the light to the light-emitting direction of the display device, which is beneficial to the uniform distribution of the light emitted by the light source 7-1. The reflection sheet 6-1 is fixed on the surface of the back plate 8-1, which has a white reflection surface. The material of the reflection sheet 6-1 is, for example, polyethylene terephthalate (PET).

The light homogenizer 5-1 is located on the light exit side of the reflective sheet 6-1, which includes a light incident side and a light exit side. The light source 7-1 is located on the light entrance side of the light homogenizer 5-1, and the refraction and total reflection of the light homogenizer 5-1 are utilized. The function is that the light entering from the light incident side is emitted from the light outgoing side of the homogenizing plate 5-1, thereby converting the line light source 7-1 into a surface light source 7-1, and the light outgoing side is the homogenizing plate 5-1 facing the display panel 1-1. side. The material of the uniform light plate 5-1 is glass, polymethyl methacrylate (Polymethyl methacrylate, PMMA for short) or polycarbonate (Polycarbonate, PC for short).

The optical film 3-1 is located on the light-emitting side of the homogenizing plate 5-1, and is used for brightening the light. The optical film 3-1 may include one or more films, including at least one of a prism film and a brightness enhancement film.

The middle frame 2-1 is surrounded by the sky side 11-1, the left side 12-1 and the right side 13-1 of the display device. Since the ground side 14-1 of the display device accommodates components such as the circuit board 101-1, it is usually not Set the middle frame 2-1. The middle frame 2-1 is used to fix the display panel 1-1, the back plate 8-1 and the plastic frame 4-1, and the middle frame 2-1 forms the upper side 11-1, the left side 12-1 and the upper side of the display device. Appearance of 13-1 on the right. The middle frame 2-1 is, for example, a metal middle frame.

The display device further includes a front case (not shown in the figure), the front case is located at the ground side 14-1 end of the display panel 1-1 for shielding the circuit board 101-1 located at the ground side 14-1 end of the display panel 1-1 .

The plastic frame 4-1 is enclosed on the inner side of the middle frame 2-1. The plastic frame 4-1 described in this embodiment is mainly located on the sky side 11-1, the left side 12-1 and the right side 13-1 of the display device. Plastic frame 4-1 on three sides. It can be understood that, the ground side 14-1 of the display device can also be provided with a plastic frame 4-1, and the plastic frame 4-1 provided on the ground side 14-1 is used to form the accommodating circuit board 101-1 together with the backplane 8-1. 1 space, and is used to support the circuit board 101-1.

The following mainly introduces the plastic frames 4-1 located on the top side 11-1, the left side 12-1 and the right side 13-1 of the display device.

In some embodiments, the plastic frame 4-1 is a plastic plastic frame 4-1, and the material of the plastic frame 4-1 is, for example, a composite material formed by adding 10% glass fiber (Glass Fiber, GF for short) in PC. The color of the frame 4-1 is, for example, white or white-gray, which is not specifically limited in this embodiment.

As shown in FIG. 2 , the plastic frame 4-1 is correspondingly located at the edge of the optical film 3-1. Specifically, the plastic frame 4-1 is supported between the optical film 3-1 and the homogenizing plate 5-1, and is used to limit the distance between the optical film 3-1 and the homogenizing plate 5-1, so as to improve the optical The utilization ratio of the diaphragm 3-1 to the light emitted by the homogenizing plate 5-1. At the same time, the plastic frame 4-1 is used for fixing the homogenizing plate 5-1 and the optical film 3-1 to ensure the stability of the homogenizing plate 5-1 and the optical film 3-1.

The plastic frame 4-1 includes a support portion 41-1, and the support portion 41-1 is located on the side of the plastic frame 4-1 facing the display area 1a-1 of the display device, that is, the support portion 41-1 is located on the side of the plastic frame 4-1. On the inner side, the opposite sides of the support portion 41-1 are respectively in contact with the homogenizing plate 5-1 and the optical film 3-1, and are supported between the homogenizing plate 5-1 and the optical film 3-1 through the supporting portion 41-1. so as to define the distance between the dodging plate 5-1 and the optical film 3-1, and the support portion 41-1 is pressed against the front surface of the dodging plate 5-1 to fix the dodging plate 5-1.

As shown in FIG. 2 , the support portion 41-1 of the plastic frame 4-1 includes a light guide surface 411-1, and the light guide surface 411-1 is connected to the light homogenizer plate 5-1 and the optical film corresponding to the support portion 41-1. Sidewalls between sheets 3-1. The first side 4111-1 of the light guide surface 411-1 is close to the front of the light dodging plate 5-1, for example, the first side 4111-1 of the light guide surface 411-1 is in contact with the front of the light dodging plate 5-1; the light guide surface 411 The second side 4112-1 of -1 is close to the back of the optical film 3-1, eg, the second side 4112-1 of the light guide surface 411-1 is in contact with the back of the optical film 3-1.

It should be noted that whether the first side 4111-1 and the second side 4112-1 of the light guide surface 411-1 are in contact with the light dodging plate 5-1 and the optical film 3-1 depends on whether the light guide surface 411-1 is in contact with The entire side wall of the support portion 41-1 is covered. In some embodiments, the side wall of the support portion 41-1 of the plastic frame 4-1 can be set as the light guide surface 411-1 in its entirety; in other embodiments, the side wall of the support portion 41-1 is only partially It is set as the light guide surface 411-1. This embodiment does not limit this.

Specifically, the light guide surface 411-1 is inclined toward the edge of the optical film 3-1 from the first side 4111-1 to the second side 4112-1 thereof. As shown in FIG. 2 , the plastic frame 4-1 extends from the edge of the display device to the center of the display device, wherein the support portion 41-1 of the plastic frame 4-1 is in the form of a bevel structure, that is, the support portion 41-1 corresponds to the light guide The first side 4111-1 of the surface 411-1 extends inward for a larger distance, while the supporting portion 41-1 extends inwardly for a shorter distance corresponding to the second side 4112-1 of the light guide surface 411-1, so that the support The light guide surface 411-1 of the portion 41-1 is formed in an outwardly inclined form from the first side 4111-1 to the second side 4112-1.

The light guide surface 411-1 is inclined outward from the side corresponding to the homogenizing plate 5-1 to the side corresponding to the optical film 3-1, and the light guide surface 411-1 has a light guiding function in the light exit direction, so that The light emitted from the edge of the homogenizing plate 5-1 can be further diffused to the edge of the optical film 3-1, which can increase the coverage of the light entering the optical film 3-1 and the light emitting area of the optical film 3-1. By increasing, the area range of the effective display image of the display panel 1-1 can be increased.

Usually, the plastic frame 4-1 will extend into the position inside the display area 1a-1 of the display panel 1-1 corresponding to the dodging plate 5-1, which will hinder the light-emitting area of the dodging plate 5-1, and then the plastic frame 4-1 The display at the edge of the display area 1a-1 of the display panel 1-1 will be blocked, resulting in a black border phenomenon at the edge of the display area 1a-1, which affects the display effect of the narrow border of the display panel 1-1.

In this embodiment, by setting the side wall of the support portion 41-1 of the plastic frame 4-1 in the form of the light guide surface 411-1, the first side 4111-1 of the light guide surface 411-1 corresponds to the light homogenizing plate 5-1, The second side 4112-1 corresponds to the optical film 3-1, and the light guide surface 411-1 is inclined toward the edge of the optical film 3-1 from the first side 4111-1 to the second side 4112-1, so that the homogenizing plate The light emitted from the edge of 5-1 diffuses to the edge of the optical film 3-1, which can increase the light emitting area of the optical film 3-1, thereby preventing the plastic frame 4-1 from blocking the display area 1a- of the display panel 1-1. The display on the edge of 1 can prevent the black border phenomenon from appearing on the edge of the display area 1a-1, and improve the display effect of the narrow border of the display panel 1-1.

In some embodiments, the first side 4111-1 of the light guide surface 411-1 is located in the display area 1a-1; the second side 4112-1 of the light guide surface 411-1 is located in the non-display area 1b-1, or , the second side 4112-1 of the light guide surface 411-1 is located in the display area 1a-1 and the distance from the boundary of the display area 1a-1 is less than 0.5 mm.

Since the first side 4111-1 of the light guide surface 411-1 is located in the display area 1a-1 of the display device, there is a sufficient overlap width between the support portion 41-1 of the plastic frame 4-1 and the light distribution plate 5-1 , in order to ensure that the plastic frame 4-1 can firmly fix the dodging plate 5-1, so as to prevent the dodging plate 5-1 from shaking or deviating from the original position during the movement of the display device.

The second side 4112-1 of the light guide surface 411-1 is located in the non-display area 1b-1 of the display device, and the second side 4112-1 of the light guide surface 411-1 is located in the display area 1a for the optical film 3-1 The part within -1 is completely unobstructed, so it has no influence on the display effect of the display area 1a-1 of the display panel 1-1.

Alternatively, the second side 4112-1 of the light guide surface 411-1 may slightly enter the display area 1a-1 of the display panel 1-1, that is, the second side 4112-1 of the light guide surface 411-1 blocks the optical film 3- 1 corresponds to a small distance from the display area 1a-1, so that the light emitted from the homogenizing plate 5-1 can still diverge toward the edge of the optical film 3-1, which affects the display effect on the edge of the display area 1a-1 of the display panel 1-1. smaller.

In order to prevent the second side 4112-1 of the light guide surface 411-1 from significantly affecting the display effect of the edge of the display area 1a-1, the second side 4112-1 of the light guide surface 411-1 and the display area 1a-1 The distance between the boundaries is less than 0.5mm, that is, the width of the second side 4112-1 of the light guide surface 411-1 extending into the display area 1a-1 is less than 0.5mm.

In some embodiments, the distance between the first side 4111-1 of the light guide surface 411-1 and the boundary of the display area 1a-1 is less than 2.5 mm. In this way, it can be avoided that the width of the first side 4111-1 of the light guide surface 411-1 covering the homogenizing plate 5-1 is too large, which affects the effect of the light from the edge of the homogenizing plate 5-1 diffusing to the edge of the optical film 3-1, so as not to affect the Display effect of the edge of the display area 1a-1 of the display panel 1-1.

In some embodiments, the included angle between the light guide surface 411-1 of the support portion 41-1 of the plastic frame 4-1 and the optical film 3-1 is less than or equal to 45°. In this way, the light guide surface 411-1 is more inclined to the edge of the optical film 3-1 from the first side 4111-1 to the second side 4112-1, and the light guide surface 411-1 on the first side 4111- 1. On the basis of covering a certain width of the homogenizing plate 5-1, the width of the second side 4112-1 of the light guide surface 411-1 to block the edge of the optical film 3-1 is shorter, which can increase the width of the optical film 3-1. light-emitting area.

In this way, the light guide effect of the light guide surface 411-1 can be further improved, and the light emitted from the edge of the homogenizing plate 5-1 can be further diffused to the edge of the optical film 3-1, thereby effectively reducing the impact of the plastic frame 4-1 on the display panel. The influence of the display effect at the edge of the display area 1a-1 of 1-1 further improves the display effect of the narrow border of the display panel 1-1.

In addition, in a possible implementation manner, the gap between the dodging plate 5-1 and the optical film 3-1 is greater than or equal to 2.5 mm. That is, the thickness of the support portion 41-1 is greater than or equal to 2.5 mm, which can ensure that there is a sufficient gap between the dodging plate 5-1 and the optical film 3-1, and can improve the optical film 3-1 to the dodging plate 5-1. utilization of the outgoing light.

To a certain degree of inclination of the light guide surface 411-1, by increasing the gap between the homogenizing plate 5-1 and the optical film 3-1, the outgoing light from the edge of the homogenizing plate 5-1 can be increased to the optical film. The edge diffusion distance of the sheet 3-1 further reduces the influence of the plastic frame 4-1 on the display effect of the display panel 1-1 caused by covering the display area 1a-1 of the dodging plate 5-1.

In addition, it should be noted that in this embodiment, the light guide surface 411-1 of the plastic frame 4-1 is set to be inclined from the first side 4111-1 to the second side 4112-1 to the edge of the optical film 3-1. form, which can effectively solve the problem that the plastic frame 4-1 protrudes into the display area 1a-1 and causes a black border phenomenon.

At the same time, the overlap width between the plastic frame 4-1 and the homogenizing plate 5-1 is correspondingly increased, so that on the basis of ensuring that the homogenizing plate 5-1 and the plastic frame 4-1 have a sufficient overlap width, Correspondingly reduce the width of the even light plate 5-1, increase the distance between the even light plate 5-1 and the edge of the back plate 8-1, and make a Leave enough expansion clearance.

Since the expansion gap of the homogenizing plate 5-1 is increased, a sufficient amount of expansion is reserved for the homogenizing plate 5-1. Therefore, the homogenizing plate 5-1 in this embodiment can be made of acrylic plate or PC plate. It is not necessary to use a glass light guide plate that does not expand when heated, thereby reducing the width of the frame on the front of the display device, improving the appearance and enhancing the competitiveness of the product.

The plastic frame 4-1 will be further described below with reference to the specific structure of the backplane 8-1.

As shown in FIG. 2 and FIG. 3 , in some embodiments, the back plate 8-1 includes a bottom plate 81-1, a flange 82-1 and a side wall 83-1, and the bottom plate 81-1 is used to support the dodging plate 5- 1, the flange 82-1 is used to support the display panel 1-1, the side wall 83-1 is used to connect between the floor and the flange 82-1, the flange 82-1, the side wall 83-1 and the floor The accommodating groove is formed together, and the edge of the dodging plate 5-1 is located in the accommodating groove.

The bottom plate 81-1 is the main body supporting surface of the back plate 8-1, the reflective sheet 6-1 and the dodging plate 5-1 are supported on the bottom plate 81-1 in sequence, and the side wall 83-1, for example, faces the display from the edge of the bottom plate 81-1 The direction of the panel 1-1 extends vertically, and the flange 82-1 extends from the other side of the side wall 83-1 toward the center of the display device. Exemplarily, the edge region of the bottom plate 81-1 connected to the side wall 83-1 and the flange 82-1 are both parallel to the plane where the display panel 1-1 is located, and the side wall 83-1 is parallel to the plane where the display panel 1-1 is located. The plane is vertical.

The flanges 82-1, the side walls 83-1 and the bottom plate 81-1 together form a receiving groove, and the edges of the even light plate 5-1 and the reflective sheet 6-1 extend into the receiving groove, so that the light distribution plate 5-1 1 and the reflective sheet 6-1 to limit the position.

As shown in FIG. 2 and FIG. 3 , in this embodiment, the plastic frame 4-1 further includes a fixing portion 42-1, and the fixing portion 42-1 is connected to the side of the supporting portion 41-1 close to the edge of the display device, which is relatively located at the edge of the display device. Outside of plastic frame 4-1. The supporting part 41-1 is used for supporting between the optical film 3-1 and the homogenizing plate 5-1, and the fixing part 42-1 is used for supporting the optical film 3-1 and the flange 82 of the back plate 8-1 between -1.

By being supported by the fixing portion 42-1 on the flange 82-1 of the back plate 8-1, the supporting effect of the flange 82-1 of the back plate 8-1 on the fixing portion 42-1 can enhance the stability of the plastic frame 4-1 It is also beneficial to limit the orientation of the light guide surface 411-1 of the support portion 41-1 of the plastic frame 4-1, so that the light guide surface 411-1 can better play the role of light guide.

FIG. 4 is a schematic structural diagram of a plastic frame provided by an embodiment of the present application. As shown in FIGS. 2 and 4 , in order to enhance the limiting effect of the plastic frame 4-1 on the optical film 3-1, in some embodiments, the fixing portion 42-1 of the plastic frame 4-1 faces the optical film 3 One side of -1 has a convex limiting portion 421-1, the optical film 3-1 is provided with a limiting hole 31-1, and the limiting portion 421-1 extends into the limiting hole 31-1.

In this embodiment, the edge of the optical film 3-1 can be fixed on the plastic frame 4-1 by bonding, for example, and in order to further enhance the limiting effect of the plastic frame 4-1 on the optical film 3-1, To prevent the optical film 3-1 from being displaced due to external force, a limiting portion 421-1 is provided on the fixing portion 42-1 of the plastic frame 4-1, and the limiting portion 421-1 is located at the fixing portion 42-1. The side facing the optical film 3-1, and the limiting portion 421-1 protrudes on the fixing portion 42-1, and a corresponding limiting position is set at the position of the edge portion of the optical film 3-1 corresponding to the fixing portion 42-1 Hole 31-1, the limiting portion 421-1 on the fixing portion 42-1 of the plastic frame 4-1 extends into the limiting hole 31-1 of the optical film 3-1 to fix the optical film 3-1 .

As shown in FIG. 4, for the fixed connection between the plastic frame 4-1 and the flange 82-1 of the back plate 8-1, the fixing part 42-1 of the plastic frame 4-1 and the flange 82-1 of the back plate 8-1 can pass through Adhesive and fixed together, or, a connecting hole 422-1 is provided on the fixing part 42-1 of the plastic frame 4-1 and the flange 82-1 of the back plate 8-1, and the plastic frame 4-1 and the back plate 8-1 are turned over. The sides 82-1 are connected by connecting elements such as screws or rivets.

The connection relationship among the middle frame 2-1, the back plate 8-1 and the plastic frame 4-1 will be described in detail below with reference to the specific structure of the middle frame 2-1.

5 is a schematic structural diagram of a middle frame provided by an embodiment of the present application; FIG. 6 is a partial schematic view at A in FIG. 5 ; FIG. 7 is a cross-sectional view of a certain area of a middle frame provided by an embodiment of the present application; A cross-sectional view of another area of a middle frame provided by an embodiment of the application; FIG. 9 is a schematic structural diagram of an elastic sheet provided by an embodiment of the application; FIG. 10 is a partial structural diagram of a back plate provided by an embodiment of the application; FIG. 11 is FIG. 10 Partial schematic at B.

As shown in FIGS. 2 and 5 to 7 , in this embodiment, the middle frame 2-1 includes a flat plate portion 21-1 and an outer side wall portion 22-1, and the flat plate portion 21-1 and the plane where the display panel 1-1 is located are located parallel, and the flat plate portion 21-1 is located on the back of the display panel 1-1, and the edge of the display panel 1-1 is supported on the flat plate portion 21-1 of the middle frame 2-1. Exemplarily, the display panel 1-1 may be adhered to the flat plate portion 21-1 of the middle frame 2-1 by the panel adhesive tape 102-1.

The outer side wall portion 22-1 of the middle frame 2-1 is connected to the flat plate portion 21-1. For example, the outer side wall portion 22-1 may be perpendicular to the flat plate portion 21-1, which is located on the side wall 83-1 of the back plate 8-1. On the outside, the outer side wall portion 22-1 of the middle frame 2-1 constitutes the appearance surfaces of the upper side 11-1, the left side 12-1 and the right side 13-1 of the display device.

As shown in FIG. 3 , in some embodiments, the display device further includes a spring piece 9-1, a spring piece 9-1-1, and the middle frame 2-1 and the back plate 8-1 are connected through the spring piece 9-1 and the spring piece 9-1-1. 1, in order to make the connection between the middle frame 2-1 and the back plate 8-1 easier, facilitate disassembly and assembly, and reduce labor.

Specifically, as shown in FIGS. 6 and 8 , a part of the middle frame 2-1 is further provided with an inner side wall portion 23-1, the inner side wall portion 23-1 is connected to the flat plate portion 21-1, and the inner side wall portion 23- 1 is located inside the outer side wall portion 22-1, for example, the inner side wall portion 23-1 and the outer side wall portion 22-1 are parallel to each other, and a volume is formed between the outer side wall portion 22-1, the flat plate portion 21-1 and the inner side wall portion 23-1. The accommodating space, the side wall 83-1 of the back plate 8-1 extends into the accommodating space, and the shrapnel 9-1-1 is sleeved on the side wall 83-1 of the back plate 8-1, and It is clamped between the outer side wall portion 22-1 and the inner side wall portion 23-1 of the middle frame 2-1 to connect the middle frame 2-1 and the back plate 8-1.

The shrapnel 9-1 The shrapnel 9-1-1 is first fixed on the side wall 83-1 of the back plate 8-1, and then the middle frame 2-1 and the back plate 8-1 are realized through the shrapnel 9-1 and the shrapnel 9-1-1. The connection between them is fixed.

In addition, as shown in FIG. 4, since the inner side wall portion 23-1 of the middle frame 2-1 is located inside the outer side wall portion 22-1, and the flat plate portion 21-1 of the middle frame 2-1 is located above the plastic frame 4-1, Therefore, the edge of the fixing portion 42-1 of the plastic frame 4-1 is also provided with an escape notch 423-1. When the middle frame 2-1 and the plastic frame 4-1 are assembled, the inner side wall portion 23-1 of the middle frame 2-1 penetrates Pass the avoidance gap 423-1 on the plastic frame 4-1.

As shown in FIG. 9 , the elastic piece 9-1 is in the form of an open end as a whole, and includes a first connecting portion 91-1, which is located on one side of the first connecting portion 91-1 and is connected to the first connecting portion. The first piece 92-1 of 91-1 and the second piece 93-1 and the third piece 94-1 located on the other side of the first connecting part 91-1 and connected to the first connecting part 91-1, the second The sheet 93-1 and the third sheet 94-1 are arranged side by side with one side and the other side being opposite sides.

Wherein, the overall extending direction of the first piece 92-1, the second piece 93-1 and the third piece 94-1 is substantially perpendicular to the plane where the first connecting portion 91-1 is located.

The first piece 92-1 includes a first flat plate portion 921-1 connected to the first connecting portion 91-1 and a second flat plate portion 922-1 connected to the first flat plate portion 921-1. The first flat plate portion 921-1 The free end of the second flat plate portion 922-1 is not coplanar with the second flat plate portion 922-1, and the free end portion of the second flat plate portion 922-1 extends in a direction away from the first connecting portion 91-1.

The plane where the first flat plate portion 921-1 is located is substantially perpendicular to the plane where the first connecting portion 91-1 is located.

The second piece 93-1 is in the shape of a flat plate as a whole, and the plane on which the second piece 93-1 is located is substantially perpendicular to the plane on which the first connecting portion 91-1 is located.

11, the second piece 93-1 is provided with a first bayonet 931-1, the back plate 8-1 is provided with a protrusion 831-1, and the protrusion 831-1 is engaged with the first bayonet 931 In -1, it is used to realize the connection and fixation between the shrapnel 9-1 and the back plate 8-1.

The third piece 94-1 includes a third flat plate portion 941-1 connected to the first connecting portion 91-1 and a fourth flat plate portion 942-1 connected to the third flat plate portion 941-1. The third flat plate portion 941-1 The free end portion of the fourth flat plate portion 942-1 is not coplanar with the fourth flat plate portion 942-1, and extends in a direction close to the first connecting portion 91-1.

The plane where the third flat plate portion 941-1 is located has a certain angle with a plane perpendicular to the plane where the first connecting portion 91-1 is located. To ensure the fixed effect, the included angle is 10-20 degrees.

In the embodiment of the present application, the elastic piece 9-1 The elastic piece 9-1-1 includes two second pieces 93-1, which are symmetrically arranged on both sides of the third piece 94-1.

In order to further ensure the tight connection between the elastic sheet 9-1 and the back plate 8-1, the first flat plate portion 921-1 and the third flat plate portion 941-1 of the elastic sheet 9-1-1 are close to each other. A bump 95-1 is also provided on the side surface of the side wall 83-1.

10 and 11, when the shrapnel 9-1 is assembled to the back panel 8-1, the shrapnel 9-1 is installed on the side wall 83 of the back panel 8-1. -1 and/or the notch 832-1 of the flange 82-1 at the notch 832-1-1, the two ends of the first connecting portion 91-1 of the spring piece 9-1-1 of the spring piece 9-1 respectively abut against the notch 832 -1 The side walls 83-1 at both ends of the notch 832-1-1 prevent the elastic piece 9-1 from sliding back and forth along the side wall 83-1.

The protrusion 831-1 on the side wall 83-1 of the back plate 8-1 is engaged with the first bayonet 931-1 of the elastic piece 9-1-1 of the elastic piece 9-1, so that the elastic piece 9-1 of the elastic piece 9-1 is locked. -1-1 is fixed on the side wall 83-1 of the back plate 8-1.

Shrapnel 9-1 The first flat plate portion 921-1 and the third flat plate portion 941-1 of the dome 9-1-1 are the bumps 95-1 and the back plate 8-1 on the surface of the side close to the side wall 83-1. The side wall 83-1 of the shrapnel 9-1 is abutted to further realize the fixing between the shrapnel 9-1-1 and the back plate 8-1.

When the middle frame 2-1 is installed on the back plate 8-1, the side wall 83-1 of the back plate 8-1 to which the spring piece 9-1-1 is fixed is inserted into the outer side wall of the middle frame 2-1 between the part 22-1 and the inner side wall part 23-1.

During assembly, the surface of the outer side wall portion 22-1 of the middle frame 2-1 presses the junction of the third flat plate portion 941-1 and the fourth flat plate portion 942-1 of the third sheet 94-1. , the third piece 94-1 of the elastic piece 9-1-1 is deformed to generate a rebound force, so that the outer side wall portion 22-1 of the middle frame 2-1 and the elastic force are balanced by the balance of the pressing force and the elastic force. Shrapnel 9-1 Shrapnel 9-1-1 fastened together.

Meanwhile, since the free end portion of the second flat plate portion 922-1 of the first piece 92-1 extends in a direction away from the first connecting portion 91-1, during assembly, the inner side wall portion 23-1 of the middle frame 2-1 The free end portion of the second flat plate portion 922-1 is pressed against the surface of the elastic sheet 9-1. During the extrusion process, the first piece 92-1 of the elastic sheet 9-1-1 is deformed to generate a rebound force. In order to balance the elastic force, the inner side wall portion 23-1 of the middle frame 2-1 and the shrapnel 9-1 and the shrapnel 9-1-1 are fixed together.

According to the concept of the first application, the support part of the plastic frame of the display device is supported between the optical film and the light homogenizing plate, the support part includes a light guide surface, the first side of the light guide surface is close to the light homogenizer plate, and the second side of the light guide surface It is close to the optical film, and the light guide surface is inclined to the edge of the optical film from the first side to the second side; in this way, the light guide surface can guide the light emitted by the uniform light plate to diverge to the edge of the optical film, which can increase the size of the optical film. The light-emitting area of the film is increased, thereby increasing the effective area of the display panel that can display the image, and avoiding the problem of black borders that the image cannot be displayed within the border of the display area due to the plastic frame entering the display area of the display panel. Improve the narrow frame effect of the display device.

According to the concept of the second application, the first side of the light guide surface is located in the display area, the second side of the light guide surface is located in the non-display area, or the second side is located in the display area and the distance from the boundary of the display area is less than 0.5mm, so that the plastic frame can stably support the homogenizing plate, and through the light guiding effect of the light guide facing the edge of the optical film, the light entering the optical film from the second side of the light guide surface can cover the entire display area, so it can be improved. The narrow bezel effect of the display device.

According to the concept of the third application, the distance between the first side of the light guide surface and the border of the display area is less than 2.5mm, so as to prevent the first side of the light guide surface from entering the display area too much and affecting the narrow frame effect.

According to the concept of the fourth application, the gap between the dodging plate and the optical film is greater than or equal to 2.5 mm, so as to increase the length of the light transmission path between the dodging plate and the optical film and improve the light guiding effect of the light guide surface.

According to the concept of the fifth application, the plastic frame further includes a fixing part, the fixing part is connected to the side of the support part close to the edge of the display device, and the fixing part is supported on the flange, so that the plastic frame can be further supported and fixed.

According to the concept of the sixth application, the side of the fixing portion facing the optical film has a raised limit portion, the optical film is provided with a limit hole, and the limit portion extends into the limit hole, so that the optical film can be fixed to the optical film through the plastic frame. Further limit and fix.

According to the concept of the seventh application, the middle frame of the display device further includes an inner side wall portion located inside the outer side wall portion, the side wall of the back plate protrudes between the outer side wall portion and the inner side wall portion, and the display device further includes an inner side wall portion that is clamped on the outer side wall portion. The elastic piece between the part and the inner side wall part, so that the middle frame and the back plate can be connected and fixed by the elastic piece.

Based on the similar shape of the backplane, some embodiments of the present application also provide a display device.

In the related art, the structure of the backplane and the middle frame of the existing display device is relatively complex, and the production cost is relatively high; and the middle frame structure is generally integrally injection-molded with an injection mold, which is very expensive and requires relatively high investment in product development. big.

For the convenience of description, unless otherwise specified, the orientation expressions of up, down, left, right, front and rear in this document are all based on the state of the display device when it is in use. The screen of the display device (ie, the display surface of the display panel 1 ) is the front, and the opposite direction is the rear.

FIG. 12 is a schematic structural diagram of a display device according to an embodiment of the present application. FIG. 13 is a schematic view of the structure of FIG. 12 after the display panel 1 is removed. FIG. 14 is a bottom view of FIG. 13 . FIG. 15 is an enlarged schematic view of the structure of the area A in FIG. 14 . FIG. 16 is a schematic view of the structure of FIG. 15 after the display panel 1 is added.

Referring to FIGS. 12 to 16 , the display device provided by the embodiment of the present application mainly includes a display panel 1 , a backplane 2 , a diffusion plate 3 , an optical film 4 and a middle frame 5 .

In the display device, the display panel 1 is located on the front side of the display device, and the front side of the display panel 1 serves as a display surface for displaying images. The display device may not be limited to electronic products such as televisions, computer monitors, and digital photo frames.

The back panel 2 is located on the rear side of the display device. The backplane 2 is disposed on the backside of the display panel 1 , and there is a gap between the backplane 2 and the display panel 1 . The back panel 2 can be used to fix and support the display panel 1 . It can be understood that the backplane 2 may be a metal backplane 2 or a plastic backplane 2 .

Referring to FIGS. 15 and 16 , in some embodiments, the back plate 2 includes a main body 21 , a flange 22 and a flange 23 which are integrally formed by bending.

The main body portion 21 is provided on the rear side of the display panel 1 at intervals. The outline of the main body portion 21 is the same as that of the display panel 1 . It should be noted that, the main body portion 21 may have a planar plate-like structure, or may be a housing structure with the center concave to the rear side, so as to expand the installation space at the center of the main body portion 21 .

The flange 22 is formed on the periphery of the main body portion 21 , and the flange 22 can be formed by bending and extending the edge of the main body portion 21 toward the front side of the display device.

The folded edge 23 is formed at the front end of the folded edge 22 , and the folded edge 23 can be formed by extending from the front edge of the folded edge 22 to the center side of the back plate 2 .

A smooth transition structure can be adopted in the bending transition regions between the main body portion 21 and the flange 22 and between the flange 22 and the flange 23 .

The main body portion 21 , the flange 22 and the flange 23 may have a U-shaped or C-shaped bending structure as a whole, and a receiving groove 24 is formed on the inner side of the flange 22 and the flange 23 . The inside of the receiving groove 24 can be used for the edge of the diffuser plate 3 to be inserted for installation. It can be understood that, the U-shaped or C-shaped bending structure of the edge of the back plate 2 can be formed by integral bending or integral injection molding. At the same time, the U-shaped or C-shaped bending structure can compress and deform the back plate 2 in the front and rear directions of the display device, which is beneficial to enhance the buffering effect on the display panel 1 .

Still referring to FIGS. 15 and 16 , the diffuser plate 3 is disposed on the front side of the main body portion 21 of the back plate 2 and is located on the rear side of the display panel 1 . The optical film 4 is attached to the front side of the diffuser plate 3 . The edges of the diffuser plate 3 and the optical film 4 can be protruded into the receiving groove 24 .

In some embodiments, a sealing member 6 is further provided between the rear side wall of the folded edge 23 and the edge of the optical film 4 . The sealing member 6 is sandwiched between the rear side wall of the folded edge 23 and the front side wall surface of the optical film 4. The sealing member 6 can be used to seal the connection gap between the edges of the diffuser plate 3 and the optical film 4 and the folded edge 23. , and can play a buffering role when the folded edge 23 is deformed by compression, preventing the optical film 4 and the diffuser plate 3 from being damaged due to the folded edge 23 pressing the optical film 4 and the diffuser plate 3 .

Still referring to FIGS. 15 and 16 , the middle frame 5 is located on the peripheral side of the display device, and is located between the display panel 1 and the back panel 2 . The middle frame 5 is used to connect the display panel 1 and the back panel 2, and to cover the edge structure of the back panel 2, that is, to cover the flange 22 and the folded edge 23 of the back panel 2, so as to realize the adjustment of the edge structure and the overall structure of the display device. Appearance optimization.

The middle frame 5 includes an outer baffle 501 , a front cover 502 and an inner baffle 503 which are integrally connected. The outer baffle 501 , the front cover 502 and the inner baffle 503 are all elongated structures.

The front cover plate 502 is attached to the front side of the folded edge 23 of the back plate 2 . In some embodiments, a first adhesive strip 7 is provided between the front cover 502 and the folded edge 23 . The first adhesive strip 7 can be, for example, VHB tape or double-sided tape, and is pasted on the front side of the folded edge 23 or the rear side of the front cover 502, so that the entire middle frame 5 can be adhered to the back along with the front cover 502. on board 2.

It can be understood that the first adhesive strip 7 can be arranged at the centerline position of the folded edge 23, which can effectively prevent the middle frame 5 from turning inward or outward relative to each other.

The front side wall of the front cover 502 can serve as the receiving surface of the display panel 1 . The display panel 1 is attached to the front side of the front cover 502 . In some embodiments, the second adhesive strip 8 is sandwiched between the front cover 502 and the display panel 1 . The second adhesive strip 8 can be, for example, VHB tape or double-sided tape, and is pasted on the front side wall of the front cover 502 or the rear side wall of the display panel 1 , so that the edge of the display panel 1 can be bonded and fixed to the middle frame 5 superior. When the display panel 1 is pressed in the front-rear direction, the second adhesive strip can effectively buffer and protect the display panel 1 through the front cover 502 .

The outer baffle 501 is formed by bending and extending the outer edge of the front cover plate 502 backward, and the outer baffle 501 covers the outer side wall of the flange 22 .

The inner baffle 503 can be formed by bending and extending the inner edge of the front cover plate 502 backward, and the inner baffle 503 is covered and clamped at the inner edge of the folded edge 23 .

FIG. 17 is a schematic structural diagram of the middle frame 5 of FIG. 13 . FIG. 18 is a cross-sectional view taken along line B-B of FIG. 17 .

Please refer to FIG. 18 , in conjunction with FIG. 16 , the outer baffle 501 , the front cover 502 and the inner baffle 503 can be a U-shaped bending structure as a whole, and the U-shaped bending structure can be covered and fixed on the flip of the back plate 2 . on edge 22 and folded edge 23.

It should be noted that the length of the inner baffle 503 is shorter than that of the outer baffle 501, and there is a gap between the inner baffle 503 and the main body 21 of the back plate 2, so that the diffuser plate 3 and the optical film 4 can extend into the back plate 2 in the accommodating groove 24 in the flange 22 and the folded edge 23.

It should also be noted that the outer baffle 501 , the front cover 502 and the inner baffle 503 have a U-shaped bending structure as a whole, the outer baffle 501 and the inner baffle 503 are both plate-shaped structures, and the inner baffle 503 is far away from the front The end portion of the cover plate 502 does not have a bent structure protruding outward from the baffle plate 501 side. Therefore, the entire middle frame 5 can be formed into long strip-shaped profiles by roll forming of metal plates, and then batch-produced, and then cut or bent into a desired shape. This structure simplifies the structure of the middle frame 5 and process, which is beneficial to reduce the production cost of the display device.

FIG. 19 is an enlarged schematic view of the structure of the C region in FIG. 18 . FIG. 20 is an enlarged schematic view of the structure of the D region in FIG. 17 .

Please refer to FIGS. 19 and 20 , and in conjunction with FIG. 17 , in this embodiment, the middle frame 5 is a three-frame frame structure, and the three frames are respectively located on the top, left and right edges of the display device.

The middle frame 5 includes a sky side portion 51 , a left side portion 52 and a right side portion 53 that are integrally connected. Wherein, the sky side portion 51 is located at the top side edge of the display device. The left side part 52 is provided on the left side of the sky side part 51 and is located on the left side edge of the display device. The right side portion 53 is provided on the right side of the sky side portion 51 and is located at the right edge of the display device.

Please refer to FIGS. 19 and 20 , and in conjunction with FIG. 18 , the sky side portion 51 , the left side portion 52 and the right side portion 53 all include an outer baffle 501 , a front cover 502 and an inner baffle 503 that are integrally connected. That is, the sky side portion 51 includes a first front cover 512 , a first outer baffle 511 disposed on the outer edge of the first front cover 512 , and a first inner baffle 513 disposed on the inner edge of the first front cover 512 . The left side portion 52 includes a second front cover 522 , a second outer baffle 521 disposed at the outer edge of the second front cover 522 , and a second inner baffle 523 disposed at the inner edge of the second front cover 522 . The right side portion 53 includes a third front cover 532 , a third outer baffle 531 disposed on the outer edge of the third front cover 532 , and a third inner baffle 533 disposed on the inner edge of the third front cover 532 .

It should be noted that the integrated connection structure of the sky side portion 51 , the left side portion 52 and the right side portion 53 , and the U-shaped bending structure of the outer baffle 501 , the front cover 502 and the inner baffle 503 , can make the middle The frame 5 is positioned on the back panel 2 , and at the same time, the middle frame 5 is used to limit the

flanges

22 and 23 of the back panel 2 , so as to effectively prevent the flanges 22 and the flanges 23 from turning outward or inward.

19 , the top of the left side portion 52 is welded to the left end of the sky side portion 51 , and a first weld 54 is formed at the welding connection between the top end of the left side portion 52 and the left end of the sky side portion 51 . The first welding seam 54 can seal the connection gap between the left side portion 52 and the sky side portion 51 , and weld the flash seam at the connection between the left side portion 52 and the sky side portion 51 , thereby preventing light transmission.

Referring to FIG. 20 , the top end of the right side portion 53 is welded to the right end of the sky side portion 51 , and a second weld 55 is formed at the welding connection between the top end of the right side portion 53 and the right end of the sky side portion 51 . The second welding seam 55 can seal the connection gap between the right side portion 53 and the sky side portion 51 , and weld the flash seam at the connection between the right side portion 53 and the sky side portion 51 , thereby preventing light transmission.

It should be noted that, the middle frame 5 may be formed by roll forming to form a structure in which the outer baffle 501 , the front cover 502 and the inner baffle 503 are integrally bent and connected. Then according to the designed size, cut into three frames of sky side 51, left side 52 and right side 53, and finally weld and splicing the three frames of sky side 51, left side 52 and right side 53, Finally, the middle frame 5 structure is formed.

FIG. 21 is a schematic view of the structure of the area of FIG. 19 before bending. FIG. 22 is a schematic view of the structure of the area of FIG. 20 before bending.

Please refer to FIG. 21 and FIG. 22 , and in conjunction with FIG. 19 and FIG. 20 , in some embodiments, the middle frame 5 may also adopt a hot bending process, and the roll-formed profile is bent twice at right angles through a tooling die to form U-shaped three-frame frame structure. The roll-formed profile is straight, and the overall length of the profile can be cut to the sum of the left side portion 52 , the sky side portion 51 and the right side portion 53 . Two bending notches are cut on the profile, so that the profile is divided into a left side part 52 , a sky side part 51 and a right side part 53 which are connected in sequence.

Please refer to FIG. 21 , in conjunction with FIG. 19 , between the left side portion 52 and the sky side portion 51 is a first bending gap 504 , the first bending gap 504 is located between the first front cover 512 of the sky side portion 51 and the left between the second front cover plates 522 of the side portion 52 .

It can be understood that the first bending notch 504 is also located between the first inner baffle 513 and the second inner baffle 523 of the left side 52 .

Meanwhile, the first outer baffle 511 of the sky side portion 51 is integrally connected with the second outer baffle 521 of the left side portion 52 . The first bending notch 504 is V-shaped, and the apex of the V-shape faces the junction of the first outer baffle 511 and the second outer baffle 521. The V-shaped first bending notch 504 can make the left side 52 and the The sky side portions 51 are smoothly bent.

During bending, the first outer baffle 511 of the sky side portion 51 and the second outer baffle 521 of the left side portion 52 may be connected at an included angle. At the same time, the first bending notch 504 disappears due to the bending contact between the first front cover 512 and the second front cover 522 , and a flash gap is formed at the connection between the first front cover 512 and the second front cover 522 . Through the welding process, the first welding seam 54 can be formed at the connection, so as to weld the connection gap between the first front cover plate 512 and the second front cover plate 522 to prevent light transmission.

Please refer to FIG. 22 , in conjunction with FIG. 20 , for the same reason, there is a second bending gap 505 between the right side part 53 and the sky side part 51 , and the second bending gap 505 is located on the first front cover of the sky side part 51 . 512 and the third front cover 532 of the right side portion 53 .

Meanwhile, the first outer baffle 511 of the sky side portion 51 is integrally connected with the third outer baffle 531 of the right side portion 53 . The second bending notch 505 is V-shaped, and the apex of the V-shape faces the connection between the first outer baffle 511 and the third outer baffle 531 . The V-shaped second bending notch 505 can make the right side 53 and the The sky side portions 51 are smoothly bent.

During bending, the first outer baffle 511 of the sky side portion 51 and the third outer baffle 531 of the right side portion 53 may be connected at an included angle. At the same time, the second bending notch 505 disappears due to the bending contact between the first front cover 512 and the third front cover 532 , and a flash gap is formed at the connection between the first front cover 512 and the third front cover 532 . Through the welding process, a second welding seam 55 can be formed at the connection to weld the connection gap between the first front cover 512 and the third front cover 532 to prevent light transmission.

Based on the above technical solutions, the embodiments of the present application at least have the following advantages and positive effects:

In the display device of the embodiment of the present application, a certain installation space can be formed on the front side of the back plate 2 by using the back plate 2 to cooperate with the

flanges

22 and 23 of the edge of the back plate 2 for the backlight assembly to be installed; A middle frame 5 is added between the display panel 1 and the back plate 2 , and the inner and outer baffles 501 , the front cover 502 and the inner baffle 503 of the middle frame 5 can be respectively covered on the outside of the flange 22 by the integrated connection structure. , The front side of the folded edge 23 and the inner side of the folded edge 23 make the structure at the edge of the back plate 2 more stable, and can optimize the overall appearance of the display device. In addition, the integrated connection structure of the outer baffle 501, the front cover 502 and the inner baffle 503 is beneficial to the roll forming of the middle frame 5, which is beneficial to simplify the structure and process of the middle frame 5, thereby reducing the display The production cost of the device.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. Scope.

Claims

A display device, comprising:

a display panel for displaying images, including a display area and a non-display area around the display area;

an optical film, arranged on the light incident side of the display panel, for brightening the light entering the display panel;

a homogenizing plate, which is arranged on the light incident side of the optical film, and is used to make the light enter the display panel from the front;

The plastic frame is arranged on the edge of the optical film, and includes a support portion supported between the optical film and the light homogenizing plate, the support portion includes a light guide surface, and the light guide surface includes a support portion close to the light guide surface. The first side of the dodging plate and the second side close to the optical film, and the light guide surface is inclined toward the edge of the optical film from the first side to the second side.
The display device according to claim 1, wherein,

The first side is located in the display area; the second side is located in the non-display area, or the second side is located in the display area and the distance from the boundary of the display area less than 0.5mm.
The display device according to claim 1, wherein,

The first side is located within the display area, and the distance between the first side and the boundary of the display area is less than 2.5 mm.
The display device according to any one of claims 1-3, wherein,

The included angle between the light guide surface and the optical film is less than or equal to 45°.
The display device according to any one of claims 1-3, wherein,

The gap between the dodging plate and the optical film is greater than or equal to 2.5mm.
The display device according to any one of claims 1-3, wherein,

The display device further includes a backplane, and the backplane includes:

a bottom plate, which is used to be supported on the back of the dodging plate;

a flange for supporting the display panel;

The side wall is used to be connected between the bottom plate and the flange, the flange, the side wall and the bottom plate together form an accommodating groove, and the edge of the uniform light plate is located in the accommodating groove.
The display device according to claim 6, wherein,

The plastic frame further includes a fixing part, the fixing part is connected to the side of the supporting part close to the edge of the display device, and the fixing part is supported on the flange.
The display device according to claim 7, wherein,

A side of the fixing portion facing the optical film has a convex limiting portion, the optical film is provided with a limiting hole, and the limiting portion extends into the limiting hole.
The display device according to claim 7, further comprising:

The middle frame is arranged on the side of the display device, and the plastic frame is arranged on the inner side of the middle frame;

The middle frame includes:

a flat plate part, which is parallel to the plane where the display panel is located, and is used for supporting the display panel;

The outer side wall part is connected to the flat plate part and is located outside the side wall of the back plate.
The display device according to claim 9, further comprising:

a shrapnel for connecting the middle frame and the back plate;

A partial area of the middle frame also has an inner side wall portion, the inner side wall portion is connected to the flat plate portion and is located inside the outer side wall portion, and the side wall of the back plate extends into the outer side wall portion and the outer side wall portion. in the accommodating space between the inner wall portions;

The elastic sheet is sleeved on the side wall of the back plate and clamped between the outer side wall portion and the inner side wall portion.
A display device, comprising:

display panel;

a back plate, which is arranged at intervals on the back side of the display panel; the back plate includes a main body part, a flange extending from the edge of the main body part to the front side, and a front edge extending from the front side of the flange to the opposite side. a hem extending from the center side of the main body portion;

A middle frame is arranged between the back panel and the display panel, the middle frame includes an outer baffle, a front cover and an inner baffle that are integrally connected; the outer baffle is covered on the flange of the flange. the outer side; the front cover plate is attached to the front side of the folded edge, and is attached to the back edge of the display panel; the inner baffle is covered at the inner edge of the folded edge.