Patent ID: 8236483

Claim:
A method of forming a resist pattern comprising: forming a resist film on a substrate using a chemically amplified negative resist composition; forming a latent image of a first line and space pattern by subjecting the resist film to first exposure through a first photomask; forming a latent image of a second line and space pattern so as to intersect with the latent image of the first line and space pattern by subjecting the resist film to second exposure through a second photomask; and developing the resist film having the latent image of the first line and space pattern and the latent image of the second line and space pattern formed thereon to form a hole pattern in the resist film, wherein the first mask is designed to form line and space patterns which have different line directions from the line direction of line and space patterns formed by the second mask, and the chemically amplified negative resist composition comprises a base material component (A) that is soluble in an alkali developing solution and an acid-generator component (B) that generates acid upon exposure, wherein the component (B) comprises a compound represented by general formula (b-1) or (b-2) shown below: wherein R 1 ′″ to R 3 ′″, R 5 ″ and R 6 ″ each independently represents an aryl group or alkyl group, wherein two of R 1′″ to R 3′″ in formula (b-1) may be bonded to each other to form a ring with the sulfur atom in the formula; and R 4 ′″ represents an alkyl group, a halogenated alkyl group, an aryl group or an alkenyl group which may have a substituent, with the proviso that at least one of R 1 ′″ to R 3 ′″ represents an aryl group, and at least one of R 5 ″ and R 6 ″ represents an aryl group.