Patent ID: 7749680
Filing Date: 2010-07-06
Classification: G03F,Y10S

Abstract:
1. A photoresist composition, comprising: a base resin copolymer comprising repeating units selected from group consisting of (t-butyl-2,2,1-bicycloheptane carboxylate/2-hydroxyethyl-2,2,1-bicycloheptane carboxylate/maleic anhydride) and (2-methyl-2-adamantyl methacrylate/2-hydroxyethyl methacrylate/N-isopropyl acrylamide), a first copolymer comprising repeating units of acrylic acid or methacrylic acid and 3,3-dimethoxypropene, a photoacid generator, an organic base, and an organic solvent.