Patent ID: 6515038
Filing Date: 2003-02-04
Classification: C08F,G03F

Abstract:
A resist composition comprising:a polymer used in a chemically amplified resist and represented by the formula: wherein R1, R3 and R5 are independently selected from the group consisting of â€”H and â€”CH3, R2 is selected from the group consisting of t-butyl, tetrahydropyranyl and 1-alkoxyethyl, R4 is selected from the group consisting of â€”H, â€”CH3, t-butyl, tetrahydropyranyl and 1-alkoxyethyl, x is an integer of 1 to 4, l/(l+m+n) ranges from 0.1 to 0.5, m/(l+m+n) ranges from 0.01 to 0.5, and (l+m)/(l+m+n) ranges from 0.1 to 0.7; andat least one photoacid generator.