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Color photoresist composition

A color photoresist and composition technology, applied in optics, optomechanical equipment, photosensitive materials for optomechanical equipment, etc., can solve the problems of particle agglomeration, leaving black spots, influence, etc. The effect of agglomeration

Active Publication Date: 2018-09-14
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Stable and uniform dispersion of pigments has always been a problem for color photoresist materials. In the above-mentioned manufacturing process, poor dispersion of pigments can easily cause particle agglomeration and leave black spots on the color film layer, resulting in poor quality of color filters. Poor dispersion, specific pigments will also appear pigment needle crystals in the post-baking and subsequent thermal processes due to poor dispersion, which will affect other film layers of the color filter

Method used

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Embodiment Construction

[0030] In a preferred embodiment of the present invention, the mass fraction of the pigment dispersion is 4% to 10%, the mass fraction of the alkali-soluble resin is 5% to 8%, and the mass fraction of the monomer is 5% to 8%. %, the mass fraction of the photoinitiator is 0.2% to 0.6%, the mass fraction of the solvent is 70% to 85%, and the mass fraction of the additive is 0.1% to 0.2%;

[0031] For example, based on 100 parts by weight, the mass fraction of the pigment dispersion accounts for 4-10 parts, the mass fraction of the alkali-soluble resin accounts for 5-8 parts, and the mass fraction of the monomer accounts for 5-8 parts, the mass fraction of the photoinitiator is 0.2-0.6 parts, the mass fraction of the solvent is 70-85 parts, and the mass fraction of the additive is 0.1-0.2 parts;

[0032] The pigment dispersion liquid includes a dispersant, a dispersion resin, a pigment and some other additives, and the dispersion resin reacts chemically with the pigment, so tha...

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Abstract

The invention provides a color photoresist composition which is prepared from a pigment dispersion, an alkali soluble resin, a monomer, a photoinitiator, a solvent, and an additive, wherein the pigment dispersion is prepared from a dispersant, a dispersion resin and a pigment, and the pigment is linked to the dispersion resin and is uniformly dispersed in the photoresist composition. In the post-baking stage of a color filter, the dispersion resin produces a carboxyl group under heating, so as to make the carboxyl group and an alkali-soluble resin in the color photoresist or / and an epoxy groupin the monomer have chemical reaction, so that the pigment is fixed on a resin crosslinking network in the color photoresist composition, the agglomeration of the pigment is alleviated, and the quality of the color filter is improved.

Description

technical field [0001] The invention relates to the field of display panel manufacturing, in particular to a color photoresist composition. Background technique [0002] Liquid crystal display (Liquid Crystal Display, LCD) is currently the most widely used display product in the market. Its production process technology is very mature, the product yield rate is high, the production cost is relatively low, and the market acceptance is high. [0003] A liquid crystal display panel is usually composed of a color filter substrate, a thin film transistor array substrate, and a liquid crystal layer arranged between the two substrates, and pixel electrodes and common electrodes are respectively arranged on the opposite inner sides of the two substrates, and the liquid crystal molecules are controlled to change direction by applying a voltage , to refract the light from the backlight module to generate a picture. [0004] A color filter (Color Filter, CF) is an important component ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/027G03F7/004
CPCG03F7/004G03F7/027
Inventor 曾燚
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD