Patent ID: 8304164
Filing Date: 2012-11-06
Classification: G03F

Abstract:
1. A photoresist composition comprising: at least one selected from the group consisting of a monomer represented by the formula (I): wherein R 1 represents a hydrogen atom or a methyl group, W 1 represents a C3-C20 divalent saturated cyclic hydrocarbon group which can have one or more substituents selected from the group consisting of a hydroxyl group, a halogen atom, a cyano group and a nitro group and in which one or more —CH 2 — can be replaced by —O— or —CO—, A 1 represents a single bond or *—O—CO—W1— wherein * represents a binding position to W 1 ═N— and W1 represents a C1-C10 divalent saturated hydrocarbon group in which one or more —CH 2 — can be replaced by —O—, —CO— or —NH—, a polymer consisting of a structural unit derived from the monomer represented by the formula (I) and a polymer consisting of a structural unit derived from the monomer represented by the formula (I) and a structural unit derived from a monomer represented by the formula (II): wherein R 3 represents a hydrogen atom or a methyl group, A 2 represents a single bond or *—O—CO—(CH 2 ) n — wherein * represents a binding position to R 4 —, n represents an integer of 1 to 7 and R 4 represents a C3-C20 saturated cyclic hydrocarbon group in which one or more —CH 2 — can be replaced by —O— or —CO—, a resin having an acid-labile group and being insoluble or poorly soluble in an aqueous alkali solution but becoming soluble in an aqueous alkali solution by the action of an acid, and an acid generator.