Patent ID: 8632960

Claim:
A method of forming a resist pattern, comprising: forming a resist film on a substrate using a resist composition comprising a base component (A) which exhibits decreased solubility in an organic solvent under action of an acid, the base component (A) comprising a resin component (A1) comprised of a structural unit (a0) represented by general formula (a0-1) shown below; and an acid-generator component (B) which generates an acid upon exposure, conducting exposure of the resist film, and patterning the resist film by a negative tone development using a developing solution comprising an organic solvent, wherein R represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; OZ represents an acid decomposable group; Y 1 represents a group in which two or more hydrogen atoms have been removed from cyclopentane, cyclohexane, adamantane, norbornane, isobornane, tricyclodecane or tetracyclododecane which may have a substituent; R 1 represents a single bond or a divalent linking group; a represents an integer of 1 to 3, and b represents an integer of 0 to 2, provided that a +b=1 to 3; and each of d and e independently represents an integer of 0 to 3.