Patent ID: 9128374
Filing Date: 2015-09-08
Classification: G03F

Abstract:
1. A resist composition which generates acid upon exposure and exhibits changed solubility in a developing solution under the action of acid, the resist composition comprising: a base component (A) which exhibits changed solubility in a developing solution under the action of acid and an acid generator component (B) which generates an acid upon exposure, the base component (A) comprising a polymeric compound (A1) comprising a structural unit (a0) represented by general formula (a0-1) shown below: wherein R represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; Va 0 represents a divalent hydrocarbon group which may contain an ether bond; n a01 each independently represents an integer of 0 to 2; and Ra 01 represents an acid dissociable group represented by general formula (a0-r-100) shown below: wherein Ra′ 101 and Ra′ 102 represents a hydrogen atom or an alkyl group; and Ra′ 103 represents a lactone-containing cyclic group, an —SO 2 — containing cyclic group or a carbonate-containing cyclic group; and the acid generator component (B) comprising an acid generator (B1) comprising a compound containing a nitrogen atom exhibiting a proton acceptor property and an acid generating site capable of generating an acid upon exposure in the same molecule thereof.