# US 9,519,208 B2 · Photosensitive resin composition for color filters and uses thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,519,208 B2 - Document ID: US9519208B2 - Status: Granted - Kind: B2 - Application number: 14/173,833 - Filed: 2014-02-06 - Published: 2014-09-04 - Granted: 2016-12-13 - Earliest claimed: 2013-03-01 - Assignees: Chi Mei Corporation - Applicants: Chi Mei Corporation - Inventors: Jung-Pin Hsu - Web page: https://patentgrep.com/patent/US9519208B2 ## CPC - G03C 1/733: {with macromolecular compounds as photosensitive substances, e.g. photochromic (photodegradable or photocrosslinkable compositions G03F7/004)} - G02B 5/201: {in the form of arrays} - G03C: PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES (for photomechanical purposes G03F); PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY (photographic processes characterised by the use or manipulation of apparatus classifiable per se in subclass G03B, see G03B; photomechanical production of textured or patterned surfaces G03F; electrophotography, magnetography G03G) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract A photosensitive resin composition for color filter including an alkai-soluble resin (A-1), an alkai-soluble resin (A-2) having a functional group represented by formula (2), a compound (B) having an ethylenically unsaturated group, a photoinitiator (C), an organic solvent (D), and a pigment (E) is provided, wherein the alkai-soluble resin (A-1) is formed by copolymerizing an ethylenically unsaturated monomer (a-1) having a carboxylic acid group, a compound (a-2) having a cyclicimide group represented by formula (1), and other copolymerizable ethylenically unsaturated monomers (a-3) except for the ethylenically unsaturated monomer (a-1) having the carboxylic acid group and the compound (a-2) having the cyclicimide group represented by formula (1). ## Claims ### Claim 1 A photosensitive resin composition for a color filter, comprising: an alkali-soluble resin (A-1) formed by copolymerizing an ethylenically unsaturated monomer (a-1) having a carboxylic acid group, a compound (a-2) having a cyclicimide group represented by formula (1), and other copolymerizable ethylenically unsaturated monomers (a-3) except for the ethylenically unsaturated monomer (a-1) having a carboxylic acid group and the compound (a-2) having a cyclicimide group represented by formula (1), in formula (1), R1 and R2 are each independently selected from the group consisting of a hydrogen atom and an alkyl group of a carbon number of 1 to 10, but R1 and R2 are not both a hydrogen atom; or R1 and R2 both form a carbocyclic ring, wherein based on a total amount of 100 parts by weight of the ethylenically unsaturated monomer (a-1) having a carboxylic acid group, the compound (a-2) having a cyclicimide group represented by formula (1), and the other copolymerizable ethylenically unsaturated monomers (a-3), a content of the compound (a-2) having a cyclicimide group represented by formula (1) is between 20 parts by weight and 60 parts by weight; an alkali-soluble resin (A-2) having a functional group represented by formula (2), in formula (2), each R3 is independently selected from the group consisting of a hydrogen atom, a straight chain or branch chain alkyl group of a carbon number of 1 to 5, a phenyl group, or a halogen atom; a compound (B) having an ethylenically unsaturated group; a photoinitiator (C); an organic solvent (D); and a pigment (E). ### Claim 2 (depends on 1) The photosensitive resin composition of claim 1, wherein the compound (a-2) having a cyclicimide group represented by formula (1) is selected from the group consisting of compounds represented by formula (3), formula (4), and formula (5); in formula (3), R1 and R2 are each independently selected from the group consisting of a hydrogen atom and an alkyl group of a carbon number of 1 to 10, but, R1 and R2 are not both a hydrogen atom; or R1 and R2 both form a carbocyclic ring; R4 represents an alkylene group of a carbon number of 1 to 6; R5 represents a residue obtained by removing a carboxylic acid group or an oxy dicarbonyl group from a polycarboxylic acid compound or an anhydride thereof; and m represents an integer of 1 to 6; in formula (4), R6 represents a residue obtained by removing an amino group from a diamine compound; in formula (5), R7 represents an alkylene group of a carbon number of 1 to 6; R8 represents a residue obtained by removing an isocyanate group from a diisocyanate compound; and R9 represents a residue obtained by removing a hydroxyl group from a diol compound. ### Claim 3 (depends on 1) The photosensitive resin composition of claim 1, wherein based on a total amount of 100 parts by weight of the alkali-soluble resin (A-1) and the alkali-soluble resin (A-2), a content of the alkali-soluble resin (A-1) is between 30 parts by weight and 90 parts by weight and a content of the alkali-soluble resin (A-2) is between 10 parts by weight and 70 parts by weight. ### Claim 4 (depends on 1) The photosensitive resin composition of claim 1, wherein based on a total amount of 100 parts by weight of the ethylenically unsaturated monomer (a-1) having a carboxylic acid group, the compound (a-2) having a cyclicimide group represented by formula (1), and the other copolymerizable ethylenically unsaturated monomers (a-3), a content of the ethylenically unsaturated monomer (a-1) having a carboxylic acid group is between 10 parts by weight and 40 parts by weight; a content of the other copolymerizable ethylenically unsaturated monomers (a-3) is between 0 parts by weight and 70 parts by weight. ### Claim 5 (depends on 1) The photosensitive resin composition of claim 1, wherein based on a total amount of 100 parts by weight of the alkali-soluble resin (A-1) and the alkali-soluble resin (A-2), a content of the compound (B) having an ethylenically unsaturated group is between 50 parts by weight and 500 parts by weight; a content of the photoinitiator (C) is between 10 parts by weight and 100 parts by weight; a content of the organic solvent (D) is between 1,000 parts by weight and 10,000 parts by weight; and a content of the pigment (E) is between 100 parts by weight and 1,000 parts by weight. ### Claim 6 (depends on 1) The photosensitive resin composition of claim 1, further comprising a resin (F). ### Claim 7 (depends on 6) The photosensitive resin composition of claim 6, wherein the resin (F) comprises a thermoplastic resin, a heat-curable resin, and a photo-curable resin. ### Claim 8 (depends on 6) The photosensitive resin composition of claim 6, wherein based on a total amount of 100 parts by weight of the alkali-soluble resin (A-1) and the alkali-soluble resin (A-2), a content of the resin (F) is between 30 parts by weight and 300 parts by weight. ### Claim 9 (depends on 1) A fabrication method of a color filter, using the photosensitive resin composition as claimed in claim 1 to form a pixel layer. ### Claim 10 (depends on 9) The fabrication method according to claim 9, wherein the compound (a-2) having a cyclicimide group represented by formula (1) is selected from the group consisting of compounds represented by formula (3), formula (4), and formula (5); in formula (3), R1 and R2 are each independently selected from the group consisting of a hydrogen atom and an alkyl group of a carbon number of 1 to 10, but, R1 and R2 are not both a hydrogen atom; or R1 and R2 both form a carbocyclic ring; R4 represents an alkylene group of a carbon number of 1 to 6; R5 represents a residue obtained by removing a carboxylic acid group or an oxy dicarbonyl group from a polycarboxylic acid compound or an anhydride thereof; and m represents an integer of 1 to 6; in formula (4), R6 represents a residue obtained by removing an amino group from a diamine compound; in formula (5), R7 represents an alkylene group of a carbon number of 1 to 6; R8 represents a residue obtained by removing an isocyanate group from a diisocyanate compound; and R9 represents a residue obtained by removing a hydroxyl group from a diol compound. ### Claim 11 (depends on 9) The fabrication method according to claim 9, wherein based on a total amount of 100 parts by weight of the alkali-soluble resin (A-1) and the alkali-soluble resin (A-2), a content of the alkali-soluble resin (A-1) is between 30 parts by weight and 90 parts by weight and a content of the alkali-soluble resin (A-2) is between 10 parts by weight and 70 parts by weight. ### Claim 12 (depends on 9) The fabrication method according to claim 9, wherein based on a total amount of 100 parts by weight of the ethylenically unsaturated monomer (a-1) having a carboxylic acid group, the compound (a-2) having a cyclicimide group represented by formula (1), and the other copolymerizable ethylenically unsaturated monomers (a-3), a content of the ethylenically unsaturated monomer (a-1) having a carboxylic acid group is between 10 parts by weight and 40 parts by weight; a content of the compound (a-2) having a cyclicimide group represented by formula (1) is between 20 parts by weight and 60 parts by weight; a content of the other copolymerizable ethylenically unsaturated monomers (a-3) is between 0 parts by weight and 70 parts by weight. ### Claim 13 (depends on 9) The fabrication method according to claim 9, wherein based on a total amount of 100 parts by weight of the alkali-soluble resin (A-1) and the alkali-soluble resin (A-2), a content of the compound (B) having an ethylenically unsaturated group is between 50 parts by weight and 500 parts by weight; a content of the photoinitiator (C) is between 10 parts by weight and 100 parts by weight; a content of the organic solvent (D) is between 1,000 parts by weight and 10,000 parts by weight; and a content of the pigment (E) is between 100 parts by weight and 1,000 parts by weight. ### Claim 14 (depends on 9) The fabrication method according to claim 9, further comprising a resin (F). ### Claim 15 (depends on 14) The fabrication method according to claim 14, wherein the resin (F) comprises a thermoplastic resin, a heat-curable resin, and a photo-curable resin. ### Claim 16 (depends on 14) The fabrication method according to claim 14, wherein based on a total amount of 100 parts by weight of the alkali-soluble resin (A-1) and the alkali-soluble resin (A-2), a content of the resin (F) is between 30 parts by weight and 300 parts by weight. ### Claim 17 (depends on 9) A color filter, fabricated by the fabrication method of claim 9. ### Claim 18 (depends on 17) A liquid display, comprising the color filter of claim 17.