Patent ID: 8026039

Claim:
A radiation-sensitive resin composition comprising a resin and a solvent, the resin including a repeating unit shown by the following general formula (1), wherein R 1 represents a hydrogen atom, a fluorine atom, or an alkyl group having 1 to 3 carbon atoms, provided that some or all of the hydrogen atoms of the alkyl group may be replaced by a fluorine atom, M + represents a sulfonium cation shown by the following general formula (2) or an iodonium cation shown by the following general formula (3), and n represents an integer from 1 to 5, wherein R 2 , R 3 , and R 4 individually represent a substituted or unsubstituted linear or branched alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted monovalent cyclic hydrocarbon group having 3 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or an unsubstituted monovalent heterocyclic organic group having 4 to 30 atoms, or a substituent having a ring wherein two or more of R 2 , R 3 , and R 4 are bonded via the sulfur atom, wherein R 5 and R 6 individually represent a substituted or unsubstituted linear or branched alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted monovalent cyclic hydrocarbon group having 3 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or an unsubstituted monovalent heterocyclic organic group having 4 to 30 atoms, or a substituent having a ring wherein R 5 and R 6 are bonded via the iodine atom.