CN208506442U - A kind of diffusion barrier, backlight and liquid crystal display with the diffusion barrier - Google Patents

Abstract

The utility model relates to a kind of diffusion barriers, it includes that the upper and lower surfaces of the diffusion barrier are arranged respectively to cloudy surface and bright face, the bottom in the cloudy surface and/or bright face is provided with black ink layer, the bottom of the cloudy surface is also pasted with secret note, the coincident at the edge of the secret note and the diffusion barrier.The utility model further relates to a kind of backlight and liquid crystal display.The utility model stops the light of light guide plate lozenges outgoing using secret note, while absorbing the light that source ends are concentrated using black ink layer, solves the problems, such as the lamp eye and bright line because generating when light mixing area is too short.

Description

A kind of diffusion barrier, backlight and liquid crystal display with the diffusion barrier

Technical field

The utility model relates to field of liquid crystal display more particularly to a kind of diffusion barrier, the backlight with the diffusion barrier and Liquid crystal display.

Background technique

With the rise of comprehensive screen mobile phone in recent years, height screen accounting at all big enterprises focus of the competition.OLED is aobvious at present Display screen screen screen accounting highest, but the problem of due to its production capacity, at present there is no popularizing in an all-round way, and setting using liquid crystal display Meter scheme bottleneck is the screen accounting problem of backlight, generallys use narrow light mixing area and narrow frame to improve backlight screen accounting.

In order to be sufficiently mixed the light of each LED lamp before entering visible area, avoid the light and shade between lamp before lamp existing As excessively obvious, light mixing area needs to reach certain length, and narrow light mixing area would generally use the LED light compared with solid matter cloth to make light It is sufficiently mixed, still, the light bud of each LED light is individualism always, and brightness is significantly stronger than surrounding before lamp, passes through sawtooth or net The problem of dot density adjustment not can solve, and lamp eye and bright line isocandela are unevenly distributed still has.

Have in the prior art and attach lamp eye and bright line that secret note is used to solve the problems, such as backlight on diffusion barrier, however, working as When the length in light mixing area is less than 2mm, the width of secret note is restricted, and the lozenges of light guide plate cannot be stopped to be emitted well Light, therefore, it is necessary to under narrow light mixing area situation lamp eye and bright line problem rethought and solved.

Utility model content

Technical problem to be solved in the utility model, is to provide a kind of bright eye for solving backlight or bright line is asked The diffusion barrier of topic, and backlight and liquid crystal display with the diffusion barrier.

The utility model solves technical solution used by above-mentioned technical problem:

A kind of diffusion barrier, the upper and lower surfaces of the diffusion barrier are arranged respectively to cloudy surface and bright face, the cloudy surface and/ Or the bottom in bright face is provided with black ink layer, the bottom of the cloudy surface is also pasted with secret note, the edge of the secret note with it is described The coincident of diffusion barrier.

In a preferred embodiment, the secret note is the one-faced tapes of black.

In a preferred embodiment, the black ink is by screen-printing deposition in the cloudy surface or bright face On.

A kind of backlight includes above-mentioned diffusion barrier, further includes having upper bright enhancement film, lower bright enhancement film and light source, it is described on Bright enhancement film, lower bright enhancement film and diffusion barrier are cascading, and the light source is located at one end of the diffusion barrier, the thickness of the secret note Degree is not less than the sum of the thickness of upper bright enhancement film and lower bright enhancement film.

In a preferred embodiment, the thickness of the black ink layer is not more than 0.1mm.

In a preferred embodiment, the width of the black ink layer is 0.5-0.7mm.

In a preferred embodiment, the thickness of the secret note is not less than 0.15mm.

In a preferred embodiment, the width of the secret note is 0.1-0.4mm.

A kind of liquid crystal display, including above-mentioned backlight.

The beneficial effects of the utility model are:

The utility model stops the light of light guide plate lozenges outgoing using secret note, while absorbing light source using black ink layer The light concentrated is held, solves the problems, such as the lamp eye and bright line because generating when light mixing area is too short.

Detailed description of the invention

The utility model is described further with reference to the accompanying drawings and examples.

Fig. 1 is the front view of the diffusion barrier of the utility model one embodiment；

Fig. 2 is the partial sectional view of the diffusion barrier of one embodiment of the prior art；

Fig. 3 is the partial sectional view of the diffusion barrier of the utility model one embodiment；

Fig. 4 is the partial sectional view of the diffusion barrier of the utility model another embodiment；

Fig. 5 is the front view of the backlight of the utility model one embodiment；

Fig. 6 is the cross-sectional view of the backlight of the utility model one embodiment；

Fig. 7 is the partial enlarged view of the backlight of the utility model one embodiment.

Specific embodiment

It is carried out below with reference to technical effect of the embodiment and attached drawing to the design of the utility model, specific structure and generation Clear, complete description, to be completely understood by the purpose of this utility model, scheme and effect.It should be noted that not conflicting In the case where, the features in the embodiments and the embodiments of the present application can be combined with each other.

It should be noted that unless otherwise specified, when a certain feature referred to as " fixation ", " connection " are in another feature, It can directly fix, be connected to another feature, and can also fix, be connected to another feature indirectly.In addition, this The descriptions such as upper and lower, left and right used in utility model are only the phase relative to each component part of the utility model in attached drawing For mutual positional relationship.

In addition, unless otherwise defined, the technology of all technical and scientific terms used herein and the art The normally understood meaning of personnel is identical.Term used in the description is intended merely to description specific embodiment herein, without It is to limit the utility model.Term " and or " used herein includes appointing for one or more relevant listed items The combination of meaning.

Referring to Fig. 2, Fig. 5, Fig. 6 and Fig. 7, Fig. 2 is the partial sectional view of the diffusion barrier 12 of one embodiment of the prior art, Fig. 5 is the front view of the backlight of the utility model one embodiment, and Fig. 6 is the backlight of the utility model one embodiment Cross-sectional view, Fig. 7 are the partial enlarged views of the backlight of the utility model one embodiment, and the upper surface 1201 of diffusion barrier 12 is arranged For cloudy surface, for making light spread uniform, the lower surface 1202 of diffusion barrier 12 is set as smooth surface, incident for light.

Backlight includes reflector plate 1, light guide plate 2, light source 3, glue frame 4, PET film 5, shading glue 6, flexible circuit board 7, black Item 8, black ink layer 9, upper bright enhancement film 10, lower bright enhancement film 11 and diffusion barrier 12, wherein PET film 5 also known as high temperature resistance polyester are thin Film has the function of insulation, and shading glue 6 is used to block the light of 2 edge of light guide plate outgoing, and central location usually has rectangle Opening is used for beam projecting, and light source 3 is fixed on flexible circuit board 7, and light source 3 is typically chosen in LED light, the light of outgoing After the guidance of light guide plate 2, after the scattering diffusion of diffusion barrier 12 and the positive aggregation of upper bright enhancement film 10 and lower bright enhancement film 11, out It is mapped to the external world.

In the development process of liquid crystal display, tend to be thinning, light guide plate 2 originally contour with light source 3 is caused to become gradually Thin, when light guide plate 2 is with 3 grade height of light source, the light that light source 3 issues can be all incident in light guide plate 2, and source ends are not likely to produce leakage Optical phenomenon, when the height of light guide plate 2 is lower than light source 3, to be incident on the light overwhelming majority in light guide plate 2, light guide plate 2 is close One end of light source 3 is formed with the lozenges 201 of transition, thus inevitable that some light is emitted from lozenges 201, from And bright eye or bright line phenomenon are produced in source ends.

Fig. 2 is a kind of means for solving the problems, such as bright eye or bright line of the prior art, in the cloudy surface 1201 of diffusion barrier 12 Bottom attaches secret note 8, so that the light for stopping lozenges 201 to be emitted, avoids the bright eye of source ends or the generation of bright line phenomenon.So And while liquid crystal display is thinning, liquid crystal display also develops towards the direction of high screen accounting, that is, requires display area to become Width, frame narrow, this makes light mixing area C (distance of the light source 3 to the edge of shading glue 6) shorten, to make light still be able to fill Divide and be mixed to get white light, assorted LED light need to arrange more closely, this concentrates the light of source ends more, and it is bright to become generation Another factor of eye or bright line phenomenon, meanwhile, light mixing area C, which shortens, directly limits the width of secret note 8, so that secret note 8 stops The effect of 201 emergent ray of lozenges is deteriorated.

Referring to Fig.1, Fig. 3, Fig. 1 are the front views of the diffusion barrier 12 of the utility model one embodiment, and Fig. 3 is that this is practical new The partial sectional view of the diffusion barrier 12 of type one embodiment, the present embodiment are first black in one layer of the coating of the upper surface of diffusion barrier 12 1201 Color ink layer 9, silk-screen printing can be used in coating method, and followed by a secret note 8 is covered, secret note 8 is the one-faced tapes of black.

Wherein, black ink layer 9 is wider than secret note 8, to solve the problems, such as 8 restricted width of secret note, generally, black ink layer 9 Width be 0.5-0.7mm, the width of secret note is 0.1-0.4mm；The length of black ink layer 9 and secret note 8 and diffusion barrier 12 Length is corresponding, and the end of secret note 8 is aligned with the bottom margin of diffusion barrier 12, and the thickness of secret note 8 is not less than upper bright enhancement film 10 under The sum of the thickness of bright enhancement film 11, so that light is sufficiently stopped, 9 thickness of black ink layer is unsuitable blocked up, in order to avoid influence other films Dimension combination, it is preferable that the thickness of secret note 8 is not less than 0.15mm, and the thickness of black ink layer 9 is not more than 0.1mm.

Referring to Fig. 4, the coating position of black ink layer 9 may be alternatively located at the lower surface 1202 of diffusion barrier 12.

Black ink layer 9 blackens the design of item 8 as a result, the light that may make black ink layer 9 that lozenges 201 is stopped to be emitted Line, while black ink layer 9 can absorb the light that source ends are excessively concentrated.

It is to be illustrated to the preferable implementation of the utility model, but the invention is not limited to the reality above Example is applied, those skilled in the art can also make various equivalent variations without departing from the spirit of the present invention Or replacement, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.

Claims (9)

1. a kind of diffusion barrier, which is characterized in that the upper and lower surfaces of the diffusion barrier are arranged respectively to cloudy surface and bright face, institute The bottom for stating cloudy surface and/or bright face is provided with black ink layer, and the bottom of the cloudy surface is also pasted with secret note, the side of the secret note The coincident of edge and the diffusion barrier.

2. diffusion barrier according to claim 1, which is characterized in that the secret note is the one-faced tapes of black.

3. diffusion barrier according to claim 1, which is characterized in that the black ink is by screen-printing deposition described On cloudy surface or bright face.

4. a kind of backlight, which is characterized in that include diffusion barrier as claimed any one in claims 1 to 3, further include having Upper bright enhancement film, lower bright enhancement film and light source, the upper bright enhancement film, lower bright enhancement film and diffusion barrier are cascading, the light source position In one end of the diffusion barrier, the thickness of the secret note is not less than the sum of the thickness of upper bright enhancement film and lower bright enhancement film.

5. backlight according to claim 4, which is characterized in that the thickness of the black ink layer is not more than 0.1mm.

6. backlight according to claim 5, which is characterized in that the width of the black ink layer is 0.5-0.7mm.

7. backlight according to claim 4, which is characterized in that the thickness of the secret note is not less than 0.15mm.

8. backlight according to claim 4, which is characterized in that the width of the secret note is 0.1-0.4mm.

9. a kind of liquid crystal display, which is characterized in that including just like the described in any item backlights of claim 4 to 8.