Patent ID: 7416830

Claim:
A positive photosensitive resin composition comprising: (a) one or more polybenzoxazole precursor polymers having any of the structures (IV); and optionally containing one or more polybenzoxazole precursor polymers of the structure II wherein Ar 1 is selected from the group consisting of a tetravalent aromatic group, a tetravalent heterocyclic group, and mixtures thereof; Ar 2 is selected from the group consisting of a divalent aromatic, a divalent heterocyclic, a divalent alicyclic, and a divalent aliphatic group that may contain silicon; Ar 3 is selected from the group consisting of a divalent aromatic group, a divalent aliphatic group, a divalent heterocyclic group, and mixtures thereof; Ar 4 is selected from the group consisting of Ar 1 (OD) k 1 (OH) k 2 and Ar 2 , x is from about 10 to about 1000; y is from 0 to about 900; D is selected from the group consisting of one of the following moieties: wherein R is selected from the group consisting of H, halogen, C 1 -C 4 alkyl group, C 1 -C 4 alkoxy group, cyclopentyl and cyclohexyl; k 1 can be any positive value of up to about 0.5, k 2 can be any value from about 1.5 to about 2 with the proviso that (k 1 +k 2 )=2, G monovalent organic group having a group selected from the group consisting of carbonyl, carbonyloxy and sulfonyl group, (b) a diazonaphthoquinone photoactive compound which is the condensation product of a compound containing from 2 to about 9 aromatic hydroxyl groups with a 5-naphthoquinone diazide sulfonyl compound and a 4-naphthoquinone diazide sulfonyl compound, and (c) at least one solvent.