Color photoresist composition

Patent metadata

Field	Value
Publication number	US-11366388-B2
Application number	US-201916616479-A
Country	US
Kind code	B2
Filing date	Aug 22, 2019
Priority date	May 14, 2019
Publication date	Jun 21, 2022
Grant date	Jun 21, 2022

Abstract

The present invention provides a color photoresist composition, including: 5-8 parts by weight of a pigment; 5-8 parts by weight of an alkali soluble resin; 5-8 parts by weight of a phthalocyanine semi-sandwich dye; 0.2-0.6 parts by weight of a photoinitiator; 70-85 parts by weight of a photoresist solvent; and 0.1-0.2 parts by weight of an additive.

First claim

What is claimed is:

1. A color photoresist composition, based on 100 parts by weight of the color photoresist composition, comprising:
5-8 parts by weight of a pigment;
5-8 parts by weight of an alkali soluble resin;
5-8 parts by weight of a phthalocyanine semi-sandwich dye;
0.2-0.6 parts by weight of a photoinitiator;
70-85 parts by weight of a photoresist solvent; and
0.1-0.2 parts by weight of an additive, wherein
the phthalocyanine semi-sandwich dye comprises a semi-sandwich type phthalocyanine compound and a dye solvent, and the semi-sandwich type phthalocyanine compound has a structure of Formula 1:

in the Formula 1, a central coordination metal RE is a rare earth metal element;
R1 is selected from at least one of a benzene ring, a naphthalene ring, —COOH, —COOCH 3 , —NH 2 , —N(CH 3 ) 2 , —SH, or —SCH 3 ; and
R2 is an organic compound containing an O or N coordinating atom, and
the alkali-soluble resin is selected from at least one of an alkyl-substituted acrylic resin, an unsaturated group-substituted acrylic resin, and an epoxy group-substituted acrylic resin.

2. The color photoresist composition according to claim 1 , wherein the rare earth metal element comprises: lanthanum (La), cerium (Ce), praseodymium (Pr), cerium (Nd), cerium (Pm), cerium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), yttrium (Y), or scandium (Sc).

3. The color photoresist composition according to claim 1 , wherein
R2 is selected from at least one of acetic acid and acetylacetone.

4. The color photoresist composition according to claim 1 , wherein the dye solvent is selected from at least one of chloroform (CHCl 3 ), methyl acetate (CH 3 COOCH 3 ), and dimethyl sulfoxide (DMSO).

5. The color photoresist composition according to claim 1 , wherein the pigment comprises at least one of a green pigment, a blue pigment, and a yellow pigment, wherein
the green pigment comprises a halogen-substituted copper phthalocyanine pigment;
the blue pigment comprises a copper phthalocyanine pigment; and
the yellow pigment comprises an indoline-based pigment, a quinophthalone-based pigment, a nickel composite pigment, or combinations thereof.

6. The color photoresist composition according to claim 1 , wherein
the alkyl-substituted acrylic resin comprises: acrylic acid, alkyl methacrylate, aryl methacrylate, methacrylate alcohol ester, or combinations thereof;
the unsaturated group-substituted acrylic resin comprises succinic acid methacrylate; and
the epoxy group-substituted acrylic resin comprises epoxy acrylate, epoxy methacrylate, epoxy alkyl methacrylate, epoxy aryl methacrylate, or combinations thereof.

7. The color photoresist composition according to claim 1 , wherein the photoinitiator is selected from at least one of acetophenone, benzoin, diimidazole, and benzophenone, wherein
the acetophenone comprises α,α-diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenyl-1-propanone (HMPP), 2-methyl-2-morpholine-1-(4-methylphenylthio)propan-1-one, or combinations thereof;
the benzoin comprises benzoyl, acetophenone, benzoin ether, or combinations thereof; and
the diimidazole comprises hexaaryl diimidazole.

8. The color photoresist composition according to claim 1 , wherein the photoresist solvent is selected from at least one of an ester solvent, an ether solvent, and a ketone solvent, wherein
the ester solvent comprises: ethylene glycol ethyl ether acetate, diethylene glycol butyl ether acetate, propylene glycol monomethyl ether ester, or combinations thereof;
the ether solvent comprises diethylene glycol diethyl ether, ethylene glycol dibutyl ether, or combinations thereof; and
the ketone solvent comprises cyclohexanone, isophorone, or combinations thereof.

9. The color photoresist composition according to claim 1 , wherein the additive is selected from at least one of a silane coupling agent, an antioxidant, an ultraviolet absorber, an antifoaming agent, and a leveling agent.

Assignees

• Tcl China Star Optoelectronics Tech Co Ltd

Inventors

• Zhang Yuehong

Classifications

• G03F7/091 Primary

  characterised by antireflection means or light filtering or absorbing means, e.g. anti-halation, contrast enhancement · CPC title

• G03F7/033

  the binders being polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers · CPC title

• C09B47/085

  substituting the central metal atom · CPC title

• G03F7/031

  Organic compounds not covered by group G03F7/029 · CPC title

• G03F7/027

  Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds (G03F7/075 takes precedence) · CPC title