Patent ID: 8298745
Filing Date: 2012-10-30
Classification: C08F,G03F

Abstract:
1. A positive resist composition comprising a base component (A) which exhibits increased solubility in an alkali developing solution under action of an acid, and an acid generator component (B) which generates an acid upon exposure, wherein the base component (A) comprises a polymeric compound (A1) containing a structural unit (a0) represented by the general formula (a0-1) shown below and a structural unit (a3) derived from an acrylate ester which has a polar group-containing aliphatic polycyclic group, wherein the polar group comprises at least one member selected from the group consisting of a hydroxyl group, a cyano group, a carboxyl group, and a hydroxyalkyl group in which at least one hydrogen atom in an alkyl group is substituted with a fluorine atom: wherein R 1 represents a hydrogen atom, a lower alkyl group, or a halogenated lower alkyl group; R 5 represents an alkyl group; R 6 represents a substituent selected from the group consisting of an alkyl group, an alkoxy group, a halogen atom and a halogenated alkyl group; and e represents an integer of 0 to 5.