Patent ID: 6251569
Filing Date: 2001-06-26
Classification: G03F,Y10S

Abstract:
A method for forming a pattern of a photoresist which comprises:a) providing on a substrate a layer of a negative photoresist composition comprising a polymer having at least one recurring group represented by the formula 1: ##STR8##whereinR is selected from the group consisting of H, alkyl, and CH.sub.2 Si(CH.sub.3).sub.3 ;R' is selected from the group consisting of:--(CH.sub.2 CH.sub.2 O).sub.m R"",alkyl, cycloalkyl, and aryl,wherein m is an integer of 1 to about 10, R"" is alkyl, cycloalkyl or aryl; andwherein n is an integer of about 5 to about 10,000;(b) imagewise exposing the layer to irradiation; and(c) developing the photoresist by removing portions of the layer not exposed to thereby form the pattern.