Patent ID: 6106993
Filing Date: 2000-08-22
Classification: G03F,Y10S

Abstract:
A chemically amplified positive resist composition comprising(A) an organic solvent,(B) a base resin in the form of a polymer having a recurring unit of the following general formula (1): ##STR52## wherein R.sup.1 is a hydrogen atom or methyl group, R.sup.2 and R.sup.3 are different acid labile groups, letters p, q and r are positive numbers satisfying 0.02.ltoreq.p/(p+q+r).ltoreq.0.5, 0.01.ltoreq.q/(p+q+r).ltoreq.0.3, 0<(p+q)/(p+1+r).ltoreq.0.8 and letter a is a positive number of 1 to 3, the polymer having a weight average molecular weight of 3,000 to 300,000, and a dispersity of 1.0 to 1.5, and(C) a photoacid generator.