Patent ID: 6864035

Claim:
An aqueous positive photosensitive resin composition comprising: (A) a positive photosensitive resin component which is a carboxyl- and/or hydroxyphenyl-containing resin (a) in combination with an ether linkage-containing olefinic unsaturated compound (b), (B) a photoacid generator which is a sulfonic acid ester and/or a sulfonic acid imide ester, (C) a photo sensitizer which is a benzopyran condensed ring compound capable of increasing photosensitivity to visible light with a wavelength of 480 nm or more and is represented by Formula wherein R 1 is hydrogen, halogen, cyano, trifluoromethyl, carboxyl or carboxylic acid ester, R 2 is hydrogen, alkyl, alkoxy, cyano, trifluoromethyl, sulfoxy or halogen, and Y is NH or O, and (D) a photoacid proliferating agent which is an organic acid ester.