Patent ID: 6391529
Filing Date: 2002-05-21
Classification: C08F,G03F,Y10S

Abstract:
A process for forming a pattern, which comprises the following steps:coating a substrate with a photoresist composition comprising 70 to 99.8 wt. % of a polymer produced by homopolymerization of a (meth)acrylate represented by the following formula (1): wherein R1 represents a hydrogen atom or a methyl group, R2 represents a C17-23 divalent hydrocarbon group containing a bridged cyclic hydrocarbon group, and R3 represents an acid-decomposable group or a hydrogen atom or copolymerization of the (meth)acrylate with another copolymerizable compound and having a weight average molecular weight of from 1,000 to 500,000 and 0.2 to 30 wt. % of a photoacid generator capable of generating an acid upon exposure to radiation;exposing the thus-coated photoresist composition to radiation having a wavelength of from 180 to 220 nm; baking the thus-exposed photoresist composition; and then developing the thus-baked photoresist composition.