Patent ID: 8841062
Filing Date: 2014-09-23
Classification: G03F

Abstract:
1. A positive working photosensitive composition comprising: a. at least one photoacid generator; b. at least one polymer, comprising one or more (meth)acrylate repeat units and further comprising one or more repeat units with at least one acid cleavable group having formula (5), c. at least one heterocyclic thiol compound comprising a ring structure chosen from the general formulas: or tautomers thereof, wherein the ring structure is a single ring structure having 4-8 atoms, or a multi ring structure having 5-20 atoms, and wherein the single ring structure or the multi ring structure is chosen from the group consisting of an-aromatic ring, a non aromatic ring, and a heteroaromatic ring, and wherein X is coupled into the ring by a single bond and is chosen from the group consisting of CR