Patent ID: 6387587
Filing Date: 2002-05-14
Classification: G03F,Y10S

Abstract:
A positive-working chemical-amplification photoresist composition which comprises, as a uniform solution in an organic solvent:(A) 100 parts by weight of a copolymeric resin consisting of from 50 to 85% by moles of (a) hydroxyl group-containing styrene units, from 15 to 35% by moles of (b) styrene units and from 2 to 20% by moles of (c) acrylate or methacrylate ester units each having a solubility-reducing group capable of being eliminated in the presence of an acid; (B) from 1 to 20 parts by weight of a radiation-sensitive acid-generating agent which is bis(4-tert-butylphenyl) iodonium nonafluorobutane sulfonate; and (C) an amine compound selected from the group consisting of secondary amines and tertiary amines in an amount in the range from 0.001 to 10 parts by weight per 100 parts by weight of the component (A).