Patent ID: 7105267

Claim:
A resist composition comprising a base resin which is a high molecular weight structure free from an aromatic substituent group, a photoacid generator, and a solvent, said photoacid generator having the general formula (3): (R 01 ) n M + R 02 —O—Rf 3 —O—CF 2 CF 2 SO 3 − (3) wherein each R 01 is independently a straight, branched or cyclic C 1 –C 20 alkyl group which optionally comprises a halogen atom or carbonyl, ester, thioether or ether group, a C 6 —C 20 aryl group or a C 7 –C 20 aralkyl group; M + is iodonium or sulfonium; b is 2 or 3; R 02 is hydrogen or a straight, branched or cyclic C 1 –C 18 alkyl, or an aryl or aralkyl group; Rf 3 is a divalent, straight or branched C 1 –C 4 hydrocarbon group in which some or all of the hydrogen atoms may be substituted with fluorine atoms.