Color filter and preparation method thereof

A technology of color filters and chromatic elements, which is applied in the fields of optical filters, optics, nonlinear optics, etc., can solve the problems such as the complex preparation process of color filters, achieve simple structure, save the cost of manufacturing materials, and improve manufacturing efficiency. efficiency effect

Active Publication Date: 2012-09-19
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above shortcomings, the present invention proposes a color filter and its preparation method in order to solve the problem of complex preparation process of the color filter in the prior art, which has a simple structure and can be processed by three color film layers. Complete the entire process flow of the color filter, reducing the traditional color filter manufacturing process by half to only 3 steps, greatly improving the manufacturing efficiency and saving about half of the cost of manufacturing materials

Method used

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  • Color filter and preparation method thereof

Examples

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Embodiment 1

[0033] In Embodiment 1 of the present invention, the hierarchical structure diagram of the color filter is as follows image 3 As shown, the color filter is mainly composed of a glass substrate 1, a red film layer 3, a blue film layer 4 and a green film layer 5; wherein, the black matrix area of ​​the color filter is partially reserved by the red film layer 3, the blue film layer The color film layer 4 and the green film layer 5 are stacked in sequence; the spacer area is formed by sequentially stacking the partially retained red film layer 3, blue film layer 4 and green film layer 5, and is formed by the green film layer 5 on the surface Spacer graphics. Furthermore, by controlling the transmittance when the black matrix area and the spacer area are partially exposed, the color film layer in the partially reserved black matrix area is slightly thinner than the color film layer in the partially reserved spacer area.

Embodiment 2

[0035] Introduce below the preparation method of the color filter with the above-mentioned layered structure of embodiment 1, in the embodiment 2 of the preparation method of the present invention, preferably adopt negative-tone color gel (that is, form insoluble matter after illumination and can obtain the photosensitive material that keeps) Each color film layer is prepared, and its method comprises steps:

[0036] 1. Production of red photoresist film layer:

[0037] Firstly, the glass substrate is cleaned, and then the red photoresist film is coated on the glass substrate, and the glass substrate coated with the red photoresist film is sent to the exposure machine equipment for the exposure process. During the exposure process, red light is used to Mask (mask) design (such as using a half-tone mask or a gray-tone mask), fully expose the red opening area (red sub-pixel area) (make it completely reserved), and partially expose the rest of the area (make it It is partially r...

Embodiment 3

[0044] In embodiment 3 of the present invention, actually covering multiple implementation modes, its difference with embodiment 1, 2 mainly lies in:

[0045] 1. The preparation of the color film layer does not have to be carried out strictly in accordance with the order in Example 2. In fact, the three color film layers of red, green and blue can be prepared in any order, and only need to be processed on the outermost film layer It only needs to produce spacer graphics, which can all achieve the same technical effect.

[0046] 2. It is not necessary to partially expose the three color film layers in the spacer area in strict accordance with the method of Example 2. In essence, as long as a certain protrusion can be formed in the spacer area, (it can be modified by modifying the corresponding Mask pattern implementation).

[0047] 3. The black matrix area does not need to strictly follow the method of Example 1 to form a red, green and blue film layer structure. In essence, a...

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Abstract

The invention relates to the technical field of liquid crystal display and provides a color filter and a preparation method thereof. The color filter comprises a glass substrate and a plurality of color film layers formed on one surface of the glass substrate; in the color filter, color sub-pixel areas are formed by the color film layers which are completely reserved; black matrix areas are formed by stacking the color film layers which are locally reserved in turn and are located at the edges of the color sub-pixel areas, thereby separating the color sub-pixel areas; spacer areas are formed by stacking the color film layers which are completely and/or locally reserved in turn and are located at one corners of the black matrix areas; and spacer graphics are formed by the outermost color film layers of the spacer areas. In the color filter provided by the invention, only one stacked structure of the color film layers is adopted for realizing all the functions of a common color filter; the color filter is simple in structure; the processes of black matrixes, protective film layers and spacer film layers are omitted, so that the manufacturing efficiency is increased; and about a half of the cost of the manufacturing materials is saved.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a color filter and a preparation method thereof. Background technique [0002] LCD (Liquid Crystal Display, liquid crystal display) devices have the advantages of light weight, thin thickness, low power consumption and low radiation, and have been widely used in information technology, multimedia technology and other fields, and gradually become the mainstream of various display devices. With the development of display technology, liquid crystal displays with high transmittance, large size, low power consumption and low cost have become the direction of future development. [0003] In order to realize the color display of the liquid crystal panel, the color filter (CF, Color Filter) is one of the important components, and its performance determines the color display quality and brightness of the display, and has an important influence on the effect of the liquid cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20G02F1/1335G02F1/1339G03F1/32
Inventor 吴洪江魏崇喜汪栋
Owner BOE TECH GRP CO LTD
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