Patent ID: 7510816

Claim:
A resist composition comprising (A) a polysiloxane comprising structural units having the following general formulae (1), (2) and (3): wherein R 1 is a C 3 -C 20 organic group with a straight, branched, cyclic or polycyclic structure which has a hydroxyl group on a carbon atom as a functional group, which has at least 3 fluorine atoms, in total, on a carbon atom bonded to the hydroxyl-bonded carbon atom, and which may further contain a halogen, oxygen or sulfur atom, R 2 is a C 1 -C 6 hydrocarbon group with a straight, branched or cyclic structure, R 3 is an C 3 -C 20 organic group with a straight, branched, cyclic or polycyclic structure which has a carboxyl group as a functional group, said carboxyl group being protected with an acid-decomposable protecting group, and which may further contain a halogen, oxygen or sulfur atom, R 4 is as defined for R 2 , R 5 is a C 4 -C 16 organic group which has a lactone ring as a functional group and which may further contain a halogen, oxygen or sulfur atom, R 6 is as defined for R 2 , p is 0 or 1, q is 0 or 1, r is 0 or 1, wherein the structural units having formula (2) are structural units having the following formula (6): wherein R 7 is an acid labile group and n is an integer of 0 or 1, and wherein the structural units having formula (3) are structural units having the following formula (7) or (8), or the following structural unit 7 or 10: wherein Y is an oxygen atom, sulfur atom or methylene group and m is 0 or 1, (B) an acid generator having the structural formula (4): (C) a nitrogen-containing organic compound, and (D) a solvent.