Patent ID: 6177225
Filing Date: 2001-01-23
Classification: G03F

Abstract:
A positive photosensitive resin composition comprising:(a) a capped polybenzoxazole precursor polymer having the structure; ##STR28##wherein Ar.sub.1 is a tetravalent aromatic group, aliphatic group, heterocyclic group, or mixtures thereof; Ar.sub.2 is a divalent aromatic, heterocyclic, alicyclic, or aliphatic group that optionally may contain silicon; Ar.sub.3 divalent aromatic group, aliphatic group, heterocyclic group, or mixtures thereof;Z is one of the following groups; ##STR29##x is 10 to 1000; y is 0 to 900; and b is 0.10 to 350;(b) a photosensitive agent; and(c) a solvent.