Patent ID: 7544460
Filing Date: 2009-06-09
Classification: G03F,Y10S

Abstract:
1. A resist composition, comprising a resin component (A) that displays changed alkali solubility under action of acid, and an acid generator component (B) that generates acid on exposure, which is used in a shrink process comprising the steps of: providing a resist layer formed from said resist composition on top of a support, forming a resist pattern in said resist layer, providing a water-soluble coating formed from a water-soluble coating formation agent comprising a water-soluble polymer on top of said resist pattern, and shrinking said water-soluble coating by heating, thereby narrowing a spacing of said resist pattern, wherein said component (A) is a resin comprising structural units derived from a (meth)acrylate ester, exhibits a glass transition temperature that falls within a range from 120 to 170° C. and is either one of: a mixed resin comprising a polymer that comprises both structural units derived from an acrylate ester and structural units derived from a methacrylate ester, and a polymer that comprises one of either structural units derived from an acrylate ester or structural units derived from a methacrylate ester, but not another, and a mixed resin comprising a polymer that comprises structural units derived from an acrylate ester but no structural units derived from a methacrylate ester, and a polymer that comprises structural units derived from a methacrylate ester but no structural units derived from an acrylate ester.