Patent ID: 7147984
Filing Date: 2006-12-12
Classification: G03F,Y10S

Abstract:
1. A positive-working chemical-amplification photoresist composition which consists of, as a uniform solution in an organic solvent: (A) 100 parts by weight of a film-forming resinous compound having acid-dissociable solubility-reducing groups in the molecule and capable of being imparted with an increased solubility in an aqueous alkaline solution by interaction with an acid, which resinous compound is a copolymeric resin consisting of from 50 to 85% by moles of the monomeric units of hydroxystyrene, from 10 to 30% by moles of the monomeric units of styrene and from 2 to 20% by moles of the monomeric units of a tert-alkylacrylate or methacrylate; (B) from 1 to 10 parts by weight of an acid-generating compound which is an onium salt compound having a fluoroalkylsulfonate as the anionic constituent; (C) from 0.01 to 5 parts by weight of a phosphorus-containing oxo acid, (D) an amine selected from the group consisting of secondary amines and tertiary amines, in an amount sufficient to exhibit a quenching effect and (E) an organic solvent to dissolve components (A) to (D).