CN209765227U

CN209765227U - Liquid crystal display structure

Info

Publication number: CN209765227U
Application number: CN201920855694.5U
Authority: CN
Inventors: 周坚定; 贺术春; 李文
Original assignee: CHENZHOU JENSON DISPLAY Co Ltd
Current assignee: Hunan jingxun photoelectric Co.,Ltd.
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2019-12-10
Anticipated expiration: 2029-06-06

Abstract

the utility model provides a liquid crystal display structure, include: the upper surface of the upper glass substrate is provided with an upper polaroid, the lower surface of the upper glass substrate is provided with an upper ITO (indium tin oxide) conductive film, and the lower surface of the upper ITO conductive film is provided with an upper PI (polyimide) orientation layer; the upper surface of the lower glass substrate is provided with a lower ITO conductive film, the upper surface of the lower ITO conductive film is provided with a lower PI (polyimide) orientation layer, and the lower surface of the lower glass substrate is provided with a lower polarizer; wherein, go up and be equipped with sealant layer and busbar between the ITO conductive film and the lower ITO conductive film, go up the PI alignment layer, form confined filling cavity down between PI alignment layer and the sealant layer, be equipped with a plurality of pad linings in the filling cavity, it has the liquid crystal to fill between lining and the filling cavity, the busbar is located the filling cavity outside, the thickness of going up PI alignment layer and PI alignment layer down is 48 to 52 nanometers, be equipped with the ITO filling block down between a plurality of electronic circuits on the glass substrate, can improve LCD's contrast, satisfy the performance demand of market to LCD.

Description

Liquid crystal display structure

Technical Field

The utility model relates to a liquid crystal display technical field, in particular to liquid crystal display structure.

Background

Liquid crystal displays have advantages of flat panel display, low power consumption, no radiation, high image quality, light weight, and the like, and thus have been widely used as display devices, and are becoming the mainstream of display devices. With the development and progress of science and technology, the performance requirements of liquid crystal displays on the market are higher and higher, one of which is the contrast.

The contrast ratio refers to a ratio of the luminance of a display area to the luminance of a non-display area on a screen. The influence of the contrast on the visual effect is very critical, and generally, the higher the contrast is, the clearer and more striking the image is; if the contrast is low, the whole picture is gray. The existing liquid crystal display has small contrast due to the defect of the self structure, and cannot meet the market demand.

SUMMERY OF THE UTILITY MODEL

The utility model provides a liquid crystal display structure, its purpose is because self structural defect causes the contrast little in order to solve current liquid crystal display, can't satisfy the problem of market demand.

In order to achieve the above object, an embodiment of the present invention provides a liquid crystal display structure, including:

The upper surface of the upper glass substrate is provided with an upper polaroid, the lower surface of the upper glass substrate is provided with an upper ITO (indium tin oxide) conductive film, and the lower surface of the upper ITO conductive film is provided with an upper PI (polyimide) orientation layer;

The upper surface of the lower glass substrate is provided with a lower ITO conductive film, the upper surface of the lower ITO conductive film is provided with a lower PI (polyimide) orientation layer, and the lower surface of the lower glass substrate is provided with a lower polarizer;

The ITO conductive film is arranged on the glass substrate, a sealing adhesive layer and a conductive strip are arranged between the upper ITO conductive film and the lower ITO conductive film, a closed filling cavity is formed among the upper PI directional layer, the lower PI directional layer and the sealing adhesive layer, a plurality of pad lining materials are arranged in the filling cavity, liquid crystals are filled between the pad lining materials and the filling cavity, the conductive strip is located on the outer side of the filling cavity, the thicknesses of the upper PI directional layer and the lower PI directional layer are both 48-52 nanometers, and ITO filling blocks are arranged among a plurality of electronic circuits on the lower glass substrate.

Optionally, the length of the lower glass substrate is greater than the length of the upper glass substrate.

optionally, the thicknesses of the upper and lower PI alignment layers are both 50 nm.

Optionally, the upper surface of the upper polarizer is provided with a protective film.

The above technical scheme of the utility model has following beneficial effect:

in the embodiment of the utility model, the effect of PI alignment layer makes the liquid crystal molecule present regular array according to certain direction and angle after the friction in the LCD, and PI alignment layer is thinner more generally, can obtain better pretilt angle after the friction, and the contrast is also better, therefore all establishes to 48 to 52 nanometers (is less than the thickness of PI alignment layer among the present LCD) through the thickness with last PI alignment layer and lower PI alignment layer for LCD's structure can improve greatly. Meanwhile, in order to avoid the bad phenomenon that the pattern outline of the liquid crystal display can be seen in a non-display state due to the fact that the upper PI directional layer and the lower PI directional layer are too thin, ITO filling blocks are arranged among a plurality of electronic circuits on the lower glass substrate to relieve the bad phenomenon.

Drawings

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

FIG. 1 is a cross-sectional view of an embodiment of the present invention;

FIG. 2 is a schematic diagram of an embodiment of the present invention in which ITO filling blocks are not filled between lower glass substrate electronic circuits;

FIG. 3 is a schematic diagram of an embodiment of the present invention in which ITO filling blocks are filled between lower glass substrate electronic circuits;

fig. 4 is a top view of an lcd structure according to an embodiment of the present invention.

[ description of reference ]

1. An upper glass substrate; 2. an upper polarizer; 3. an ITO conductive film is arranged; 4. an upper PI alignment layer; 5. a lower glass substrate; 6. a lower ITO conductive film; 7. a lower PI alignment layer; 8. a lower polarizer; 9. sealing the adhesive layer; 10. a conductive strip; 11. a padding material; 12. a liquid crystal; 13. an ITO filling block; 14. a protective film; 15. sealing glue; 16. an electronic circuit.

Detailed Description

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, an embodiment of the present invention provides a liquid crystal display structure, including: the device comprises an upper glass substrate 1, wherein an upper polaroid 2 is arranged on the upper surface of the upper glass substrate 1, an upper ITO conductive film 3 is arranged on the lower surface of the upper glass substrate 1, and an upper PI (polyimide) orientation layer 4 is arranged on the lower surface of the upper ITO conductive film 3; the glass substrate comprises a lower glass substrate 5, wherein a lower ITO conductive film 6 is arranged on the upper surface of the lower glass substrate 5, a lower PI directional layer 7 is arranged on the upper surface of the lower ITO conductive film 6, and a lower polarizer 8 is arranged on the lower surface of the lower glass substrate 5. The ITO conductive film comprises an upper ITO conductive film 3, a lower ITO conductive film 6, a sealing adhesive layer 9 and a conductive strip 10, a closed filling cavity is formed among the upper PI directional layer 4, the lower PI directional layer 7 and the sealing adhesive layer 9, a plurality of pad lining materials 11 are arranged in the filling cavity, liquid crystals 12 are filled between the pad lining materials 11 and the filling cavity, the conductive strip 10 is located on the outer side of the filling cavity, the thicknesses of the upper PI directional layer 4 and the lower PI directional layer 7 are both 48-52 nanometers, and ITO filling blocks 13 are arranged among a plurality of electronic circuits 16 on a lower glass substrate 5.

Wherein, in the embodiment of the present invention, the length of the lower glass substrate 5 is greater than the length of the upper glass substrate 1. And in the embodiment of the present invention, the main functions of the liquid crystal display are realized through the upper glass substrate 1, the upper polarizer 2, the upper ITO conductive film 3, the upper PI alignment layer 4, the lower glass substrate 5, the lower ITO conductive film 6, the lower PI alignment layer 7, the lower polarizer 8, the conductive strip 10, the padding material 11, the liquid crystal 12, the electronic circuit 16, etc. As shown in fig. 4, when the sealant layer 9 is disposed between the upper ITO conductive film 3 and the lower ITO conductive film 6, the port of the sealant layer 9 may be sealed by the sealing compound 15, so as to ensure the sealing effect.

Among them, in the embodiment of the present invention, the main component of the PI alignment layer (including the upper PI alignment layer 4 and the lower PI alignment layer 7) in the liquid crystal display is polyimide, which mainly acts to make the liquid crystal molecules (i.e. the liquid crystal 12 in the filling cavity) to be regularly arranged according to a certain direction and angle after rubbing, and generally, the thinner the PI alignment layer is, the better the pretilt angle can be obtained after rubbing, and the better the contrast is (i.e. higher).

It is worth mentioning that, in the embodiment of the utility model, the thickness of going up PI alignment layer 4 and PI alignment layer 7 down all establishes to 48 to 52 nanometers (preferred, can be 50 nanometers with the thickness of going up PI alignment layer 4 and PI alignment layer 7 down), is far less than 70 nanometers among the current LCD, thereby make the arrangement that liquid crystal molecule can be better on the PI alignment layer, thereby reach the mesh that reduces the regional minimum luminance of non-display, improve LCD's contrast, satisfy market to LCD's performance demand, especially have the high-grade product of higher requirement to some contrast. Specifically, for the upper and lower PI alignment layers, the thickness of the PI alignment layer can be reduced by reducing the solid content in the PT liquid in the PI alignment layer, because the thickness of the PI alignment layer depends on the solid content in the PI liquid, the higher the solid content is, the thicker the PI alignment layer is, and the lower the solid content is, the thinner the PI alignment layer is.

Meanwhile, in order to avoid the undesirable phenomenon that the pattern profile (generally, disposed on the lower glass substrate 5) of the lcd can be seen in the non-display state due to the thinness of the upper PI alignment layer 4 and the lower PI alignment layer 7, as shown in fig. 2 to 3, ITO filling blocks 13 are disposed between the electronic circuits 16 on the lower glass substrate 5 to alleviate the undesirable phenomenon. Specifically, an ITO fill block 13 made of ITO may be added in the previous process. The plurality of electronic circuits 16 include devices constituting the pattern outline, circuits connecting the devices, and the like.

Optionally, in an embodiment of the present invention, the upper surface of the upper polarizer 2 is provided with a protective film 14 to protect devices such as the upper polarizer 2. It is of course understood that the protective film 14 may be a transparent protective film to facilitate the user to view the display pattern on the lcd.

the foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A liquid crystal display structure, comprising:

The ITO conductive film comprises an upper ITO conductive film, a lower ITO conductive film and a glass substrate, wherein a sealing adhesive layer and a conductive strip are arranged between the upper ITO conductive film and the lower ITO conductive film, a closed filling cavity is formed among the upper PI directional layer, the lower PI directional layer and the sealing adhesive layer, a plurality of pad linings are arranged in the filling cavity, liquid crystal is filled between the pad linings and the filling cavity, the conductive strip is located on the outer side of the filling cavity, the thicknesses of the upper PI directional layer and the lower PI directional layer are both 48-52 nanometers, and ITO filling blocks are arranged among a plurality of electronic circuits on the lower glass substrate.

2. The lcd structure of claim 1, wherein the lower glass substrate has a length greater than a length of the upper glass substrate.

3. The liquid crystal display structure of claim 1, wherein the upper and lower PI alignment layers are each 50 nanometers thick.

4. The liquid crystal display structure of claim 1, wherein the upper surface of the upper polarizer is provided with a protective film.