Patent ID: 7364831
Filing Date: 2008-04-29
Classification: G03F,Y10S

Abstract:
1. A positive resist composition comprising: a resin component (A) whose alkaline solubility changes by an action of an acid; an acid generator component (B); and polypropylene glycol, wherein the component (A) comprises a resin component (A1) including a constitutional unit (a1) represented by general formula (I), a constitutional unit (a2) represented by general formula (II), and a constitutional unit (a3) having an acid dissociable dissolution inhibiting group which includes a constitutional unit (a3-1) whose acid dissociable dissolution inhibiting group is a tertiary alkyl group containing an aliphatic monocyclic group, wherein R represents a hydrogen atom or a methyl group, and m represents an integer of 1 to 3, wherein R represents a hydrogen atom or a methyl group, and R