Patent ID: 8921029

Claim:
A resist composition comprising a resin having a structural unit represented by the formula (I), a resin being insoluble or poorly soluble in alkali aqueous solution, but becoming soluble in an alkali aqueous solution by the action of an acid and not including the structural unit represented by the formula (I), and an acid generator represented by the formula (II), wherein R 1 represents a hydrogen atom or a methyl group; A 1 represents a C 1 to C 6 alkanediyl group; R 2 represents a C 1 to C 6 fluorinated alkyl group; wherein R II1 and R II2 independently represent a fluorine atom or a C 1 to C 6 perfluoroalkyl group; L II1 represents a single bond, a C 1 to C 6 alkanediyl, a C 4 to C 8 divalent alicyclic hydrocarbon group, —(CH 2 ) t —CO—O—* or —(CH 2 ) t —CO—O—CH 2 —(CH 2 ) u —*, one or more —CH 2 — contained in the alkanediyl, —(CH 2 ) t —CO—O—* or —(CH 2 ) t —CO—O—CH 2 —(CH 2 ) u —* may be replaced by —O—, t represents an integer of 1 to 12, u represents an integer of 0 to 12, * represents a bond to Y II1 ; Y II1 represents an optionally substituted C 3 to C 18 alicyclic hydrocarbon group, and one or more —CH 2 — contained in the alicyclic hydrocarbon group may be replaced by —O—, —CO— or —SO 2 —; R II3 , R II4 , R II5 , R II6 and R II7 independently represent a hydrogen atom, a hydroxy group, a C 1 to C 6 alkyl group, a C 1 to C 6 alkoxy group, a C 2 to C 7 alkoxycarbonyl group or a C 2 to C 12 acyloxy group, one or more —CH 2 — contained in sulfur-containing ring of cation may be replaced by —O— or —CO—; n represents an integer of 1 to 3; s represents an integer of 0 to 3; and R II8 in each occurrence independently represent a C 1 to C 6 alkyl group.