Patent ID: 7118846
Filing Date: 2006-10-10
Classification: G03F,Y10S

Abstract:
1. A positive resist composition comprising: (A) a resin which comprises a repeating unit having at least two groups represented by the following general formula (Z) and at least one repeating unit selected from the group consisting of repeating units represented by the following general formulae (II) to (V), the resin increasing the solubility in an alkaline developing solution by the action of an acid; and (B) at least one compound which generates an acid by the action of actinic rays or a radiation: R Y's each independently represent a hydrogen atom or an organic group; Rb and Rb′ each independently represents a hydrogen atom, a halogen atom, or an organic group, L r represents 0 or 1; R A R Ra represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, or an aralkyl group, and A R Y A R Z L X represents a hydroxy group, a cyano group, an alkoxy group, or an alkyl group, provided that at least one of the X's is not an alkyl group, when two or more L m represents 0 or 1, and p represents an integer of 1 to 4.