Patent ID: 8609889
Filing Date: 2013-12-17
Classification: C07C,G03F

Abstract:
1. A chemically amplified resist composition comprising a photoacid generator which generates a sulfonic acid having the general formula (1) in response to high-energy radiation or heat, wherein R is a substituted or unsubstituted, monovalent hydrocarbon group having an alicyclic hydrocarbon structure selected from the group consisting of cyclopentyl, cyclohexyl, cycloheptyl, 4-methylcyclohexyl, cyclohexylmethyl, norbornyl, adamantyl, 2-oxocyclopentyl, 2-oxocyclohexyl, 2-cyclopentyl-2-oxoethyl, 2-cyclohexyl-2-oxoethyl, 2-(4-methylcyclohexyl)-2-oxoethyl, 4-oxa-tricyclo[4.2.1.0 R′ is hydrogen or trifluoromethyl, A n is an integer of 1 to 3.