CN217561879U

CN217561879U - Light leakage prevention liquid crystal display

Info

Publication number: CN217561879U
Application number: CN202221496370.5U
Authority: CN
Inventors: 孙洋; 邓宝珍
Original assignee: Baileqi Technology Inc
Current assignee: Baileqi Technology Inc
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-10-11
Anticipated expiration: 2032-06-15

Abstract

The utility model discloses a leak protection light LCD, include: the light guide plate is a wedge-shaped light guide plate, one end of the first shading glue is pasted with the upper surface of the rubber frame, the other end of the first shading glue is pasted with the light intensifying piece, one end of the first shading glue, which is close to the rubber frame, is bent downwards and is pasted on the side face of the rubber frame, and the second shading glue is pasted between the end part of the light guide plate, which is close to the light source, and the diffusion piece. This LCD's shading is glued and is not extended to the bottom surface of chase downwards, but only extends to the side of gluing the frame, consequently can not take place the shading and glue the condition that is difficult to laminate mutually with the chase fillet, prevents that shading from gluing to drop and produce the light leak phenomenon, has done smooth processing in the position of gluing frame and shading and gluing mutually laminating moreover for shading is glued and is pasted more firmly. And a light shielding glue is stuck between the wedge-shaped surface of the light guide plate and the diffusion sheet to prevent the light at the wedge-shaped part of the light guide plate from passing through the diffusion sheet and the brightness enhancement sheet to cause the light leakage phenomenon.

Description

Light leakage prevention liquid crystal display

Technical Field

The utility model relates to a LCD field especially relates to a leak protection light LCD.

Background

At present, the smart phones pursue narrower frames, larger screens and higher screen occupation ratio. However, the frame in the narrow frame structure is narrowed, but the light leakage problem is more and more obvious, and bright edges are generated around the screen, which seriously affects the visual effect of the screen. Referring to fig. 1, the light leakage problem of the display screen is usually solved by adhering a light-shielding adhesive 100 to improve the bright edge problem, but the current lcd still has the following defects:

1. as the frame is narrower and narrower, the adhesion between the frame and the light shielding glue is firmer and weaker, which causes the light shielding glue 100 to tilt up to generate light leakage;

2. the existing light-shielding glue 100 is extended and adhered to the bottom surface of the iron frame 200, however, the bottom surface of the iron frame 200 is provided with a round corner, the light-shielding glue 100 at the round corner is difficult to be adhered to the iron frame 200, and the light leakage phenomenon can also be caused;

3. the wedge-shaped light guide plate 300 is generally adopted in the existing liquid crystal display module, and light emitted by the wedge-shaped part of the wedge-shaped light guide plate 300 can pass through the brightness enhancement film 400 and the diffusion film 500 to cause the light leakage phenomenon;

4. with the narrowing of the frame, the edge of the liquid crystal display may leak light to generate a bright edge, which seriously affects the visual effect.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, providing a leak protection light LCD, improving the problem of current LCD light leak.

The technical scheme of the utility model as follows: a light leakage preventing liquid crystal display comprising: chase, gluey frame, light source, light guide plate, reflector plate, diffusion piece, light intensifying piece and first shading are glued, the chase is carried on gluey frame's periphery, the light guide plate is the wedge light guide plate, the reflector plate is located the below of light guide plate, the diffusion piece is located the top of light guide plate, the light intensifying piece is located the top of diffusion piece, the chase parcel is not wrapped up by the chase in the outside of gluing the frame and the upper portion of gluing the frame, first shading glue one end with glue the last surface paste of frame, the other end is pasted with the light intensifying piece, first shading is glued the one end of being close to gluey frame and is buckled downwards and paste in the side of gluing the frame, the side of gluing the frame is equipped with sunken position, embedding is glued to first shading in the sunken position and the lateral surface parallel and level of first shading glue lateral surface and chase, the light guide plate is close to the tip of light source and is pasted the second shading between the diffusion piece.

Furthermore, the second shading glue is divided into three sections, the first section is horizontal and is adhered to the thick end of the light guide plate, the third section is horizontal and is adhered to the light emitting surface of the diffusion sheet, the second section is a transition section of the first section and the third section and is bent, and a gap is formed between the second section and the wedge-shaped surface of the light guide plate.

Furthermore, the second light shielding glue is divided into five sections, the first section is horizontal and is adhered to the rear end of the light guide plate, the second section is parallel to the wedge-shaped surface of the light guide plate and is tightly attached to the wedge-shaped surface of the light guide plate, the third section is horizontal and is adhered to the light emitting surface of the thin end of the light guide plate, the fourth section is vertical and is adhered to the side surface of the diffusion sheet, and the fifth section is horizontal and is adhered to the light emitting surface of the diffusion sheet.

Furthermore, a shading adhesive tape is attached to one end, far away from the light source, of the diffusion sheet.

Further, smooth processing is carried out between the glue frame and the pasting surface of the first shading glue.

Furthermore, the bottom surface and the side surface of the iron frame are bent to form a round angle.

By adopting the scheme, the utility model discloses following beneficial effect has:

1. the shading glue of the liquid crystal display does not extend downwards to the bottom surface of the iron frame, but only extends to the side surface of the glue frame, so that the situation that the shading glue is difficult to be attached to the round corner of the iron frame is avoided, the shading glue is prevented from falling off to generate a light leakage phenomenon, and the part where the glue frame is attached to the shading glue is subjected to smooth treatment, so that the shading glue is more firmly attached;

2. a shading glue is stuck between the wedge-shaped surface of the light guide plate and the diffusion sheet to prevent the light at the wedge-shaped part of the light guide plate from passing through the diffusion sheet and the brightness enhancement sheet to cause the light leakage phenomenon;

3. and a shading adhesive tape is attached to one end of the diffusion sheet close to the light source and one end of the diffusion sheet far away from the light source, so that light leakage at the edge of the liquid crystal display is prevented.

Drawings

Fig. 1 is a schematic structural view of a conventional liquid crystal display.

Fig. 2 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1:

referring to fig. 2, the present invention provides a liquid crystal display with light leakage prevention, including: the backlight module comprises an iron frame 1, a rubber frame 2, a light source 3, a light guide plate 4, a reflecting sheet 5, a diffusion sheet 6, a brightness enhancement sheet 7 and first shading glue 8. Iron frame 1 parcel is in the periphery of gluing frame 2 and the upper portion of gluing frame 2 are not wrapped up by iron frame 1, and glue 2 upper ends not by the side parallel and level of parcel and iron frame 1, the bottom surface and the side bending type of iron frame 1 form the fillet. The light guide plate 4 is a wedge-shaped light guide plate, the reflection sheet 5 is positioned below the light guide plate 4, the diffusion sheet 6 is positioned above the light guide plate 4, and the brightness enhancement sheet 7 is positioned above the diffusion sheet 5. First shading glue 8 one end with glue frame 2's last surface paste, the other end pastes with brightness enhancement piece 7, first shading glue 8 is close to the one end of gluing frame 2 and buckles downwards and paste in the side of gluing frame 2 and not paste on chase 1, the side of gluing frame 2 is equipped with sunken position, first shading glue 8 imbeds in the sunken position and the lateral surface parallel and level of lateral surface and chase 1 that first shading glue 8. In this embodiment, first shading is glued 8 and is not downwardly extending and paste the bottom surface of chase 1, only pastes the upper end of gluing frame 2, consequently shading glues and need not to laminate mutually with the fillet of chase to just can not take place shading and glue the condition that is difficult to laminate mutually with the chase fillet. On this basis, glue frame 2 and glue 8 glue between the face of pasting smooth processing at first shading for glue the surface of frame 2 more smooth, thereby make the shading glue with glue and paste more firmly between the frame 2.

Because the light emitted from the wedge-shaped part of the light guide plate 4 passes through the diffusion sheet 6 and the brightness enhancement sheet 7 to generate the light leakage phenomenon, the second light-shielding glue 9 is pasted between the end part of the light guide plate 4 close to the light source 3 and the diffusion sheet 6, and the second light-shielding glue 9 shields the light at the wedge-shaped part of the light guide plate 4 to prevent the light from passing through the diffusion sheet 6 and the brightness enhancement sheet 7.

In this embodiment, the second light shielding glue 9 is divided into three sections, and the first section is horizontal and is adhered to the thick end of the light guide plate 4. The third section is horizontal and is adhered to the light-emitting surface of the diffusion sheet 6. The second section is a transition section between the first section and the third section, and is bent, and a gap is formed between the second section and the wedge-shaped surface of the light guide plate 4.

And a shading rubber strip 10 is attached to one end of the diffusion sheet 6 far away from the light source, so that light leakage at the edge of the liquid crystal display is prevented.

Example 2:

referring to fig. 3, the difference between the embodiment and the embodiment 1 is that the second light shielding glue 9 is divided into five segments. The first section is horizontal and is adhered to the rear end of the light guide plate 4. The second section is parallel to the wedge surface of the light guide plate 4 and closely attached to the wedge surface of the light guide plate 4. The third section is horizontal and is adhered to the light-emitting surface of the thin end of the light guide plate 4. The fourth section is vertical and is adhered to the side surface of the diffusion sheet 6, and the fifth section is horizontal and is adhered to the light-emitting surface of the diffusion sheet 6. In this embodiment, there is no gap between the second light shielding glue 9 and the light guide plate 4, and the second light shielding glue is more firmly attached to the light guide plate.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A liquid crystal display for preventing light leakage, comprising: chase (1), glue frame (2), light source (3), light guide plate (4), reflector plate (5), diffusion piece (6), diffusion piece (7) and first shading and glue (8), chase (1) parcel is in glue the periphery of frame (2) and the top of gluing frame (2) is not wrapped up by chase (1), light guide plate (4) are the wedge light guide plate, reflector plate (5) are located the below of light guide plate (4), diffusion piece (6) are located the top of light guide plate (4), diffusion piece (7) are located the top of diffusion piece (6), the one end that first shading was glued (8) with glue the upper surface of frame (2) and paste, the other end pastes with diffusion piece (7), the one end that first shading was glued (8) and is close to gluey frame (2) is buckled downwards and is pasted in the side of gluing frame (2), the side of gluing frame (2) is equipped with sunken position, first shading is glued (8) embedding in sunken position and the lateral surface of first shading is glued (8) and the lateral surface of light guide plate (1) is close to the light guide plate (6) and glue the tip (9) between the lateral surface of light guide plate (6), second shading glue the light source (9).

2. The lcd of claim 1, wherein the second light shielding adhesive (9) is divided into three sections, the first section is horizontal and adhered to the thick end of the light guide plate (4), the third section is horizontal and adhered to the light emitting surface of the diffusion sheet (6), the second section is a transition section between the first section and the third section, which is bent, and a gap is formed between the second section and the wedge-shaped surface of the light guide plate (4).

3. The lcd of claim 1, wherein the second light-shielding glue (9) is divided into five sections, the first section is horizontal and adhered to the rear end of the light guide plate (4), the second section is parallel to the wedge-shaped surface of the light guide plate (4) and closely adhered to the wedge-shaped surface of the light guide plate (4), the third section is horizontal and adhered to the light-emitting surface of the thin end of the light guide plate (4), the fourth section is vertical and adhered to the side surface of the diffusion sheet (6), and the fifth section is horizontal and adhered to the light-emitting surface of the diffusion sheet (6).

4. The leak-proof LCD according to any of claims 1-3, wherein the diffuser (6) is attached with a light-shielding tape (10) at the end away from the light source (3).

5. A leak-proof lcd according to any of claims 1-3, wherein the adhesive surface between the adhesive frame (2) and the first light-shielding adhesive (8) is smoothed.

6. The lcd of any of claims 1 to 3, wherein the bottom and side surfaces of the bezel (1) are bent to form rounded corners.