Patent ID: 7435525

Claim:
A positive photosensitive resin composition comprising: (a) alkaline aqueous solution-soluble polyamide having a polyoxazole precursor structure; (b) an o-quinonediazide compound; and (c) a latent acid generator which generates acid upon heating, wherein said component (c) is selected from the group consisting of: (c-1) imide sulfonate; (c-2) a compound having a structure R 1 R 2 C═N—O—SO 2 —R, wherein R is selected from a group consisting of an aryl group, an alkyl group and a perfluoroalkyl group; R 1 is a cyano group; and R 2 is selected from a group consisting of a methoxyphenyl group and a phenyl group; (c-3) a compound having a structure —HN—SO 2 —R′, wherein R′ is selected from a group consisting of an alkyl group, an aryl group and a perfluoroalkyl group; (c-4) a salt formed from a strong acid and a base selected from a group consisting of alkyl pyridine, pyridine, N-alkyl pyridine and halogenated N-alkyl pyridine, said salt being other than onium salts; and combinations thereof.