Patent ID: 7666572

Claim:
A resist top coat composition for forming a top coat on a photoresist film, comprising at least a polymer that has an amino group or a sulfonamide group at a polymer end and that is represented by the following general formula (1): at least one solvent selected from the group consisting of 1-butyl alcohol, 2-butyl alcohol, isobutyl alcohol, tert-butyl alcohol, 1-pentanol, 2-pentanol, 3-pentanol, tert-amyl alcohol, neopentyl alcohol, 2-methyl-1-butanol, 3-methyl-1-butanol, 3-methyl-3-pentanol, cyclopentanol, 1-hexanol, 2-hexanol, 3-hexanol, 2,3-dimethyl-2-butanol, 3,3-dimethyl-1-butanol, 3,3-dimethyl-2-butanol, 2-diethyl-1-butanol, 2-methyl-1-pentanol, 2-methyl-2-pentanol, 2-methyl-3-pentanol, 3-methyl-1-pentanol, 3-methyl-2-pentanol, 3-methyl-3-pentanol, 4-methyl-1-pentanol, 4-methyl-2-pentanol, 4-methyl-3-pentanol, cyclohexanol, diisopropyl ether, diisobutyl ether, diisopentyl ether, di-n-pentyl ether, methylcyclopentyl ether, methylcyclohexyl ether, di-n-butyl ether, di-sec-butyl ether, diisopentyl ether, di-sec-pentyl ether, di-t-amyl ether, and di-n-hexyl ether, wherein the (P) represents a unit obtained by polymerization of a polymerizable compound, R 1 represents a single bond or a linear, branched or cyclic alkylene group having 1-10 carbon atoms, R 2 and R 3 independently represent any one of a hydrogen atom, a linear, branched or cyclic alkyl group having 1-20 carbon atoms, and —SO 2 R 4 , either R 1 and R 2 , R 1 and R 3 , or R 2 and R 3 may be linked to form a ring, R 4 represents any one of a linear, branched or cyclic alkyl group having 1-10 carbon atoms and an aryl group having 6-20 carbon atoms, the alkyl group and the aryl group may contain one or more groups selected from an ether group and an ester group, and hydrogen atoms of the alkyl group and the aryl group may be totally or partially substituted with a fluorine atom, the unit (P) of the polymer represented by the general formula (1) comprises a repeating unit represented by the following general formula (2): R 5 represents any one of a hydrogen atom, a fluorine atom, a methyl group, and a trifluoromethyl group, X represents any one of a single bond, —O—, —C(═O)—O—, —C(═O)—O—R 14 —C(═O)—O—, —C(═O)—O—R 14 —O—, and —C(═O)—O—R 14 —O—C(═O)—, R 14 represents a linear, branched or cyclic alkylene group having 1-10 carbon atoms, R 6 represents a single bond, a linear, branched or cyclic alkylene group or alkanetriyl group having 1-12 carbon atoms, and hydrogen atoms of the alkylene group and the alkanetriyl group may be totally or partially substituted with a fluorine atom, R 7 represents any one of a hydrogen atom, a fluorine atom, a methyl group, a trifluoromethyl group, and a difluoromethyl group, R 6 and R 7 may be linked to form a ring, and the ring may contain an ether bond, and a is 1 or 2.