Patent ID: 6727033
Filing Date: 2004-04-27
Classification: G03F,Y10S

Abstract:
A positive resist composition comprising (a) a resin (A), which is decomposed by the action of an acid to increase solubility in an alkali developing solution, containing a structural unit including a group represented by formula (X) shown below and/or a resin (B), which is decomposed by the action of an acid to increase solubility in an alkali developing solution, containing a structural unit including a group represented by formula (Y) shown below, and a resin (C), which is decomposed by the action of an acid to increase solubility in an alkali developing solution, containing a structural unit including a group represented by formula (Q) shown below; and (b) a compound that generates an acid upon irradiation of an actinic ray or radiation. wherein, R1 and R2, which may be the same or different, each represent a hydrogen atom or an alkyl group which may have a substituent; m represents an integer of from 1 to 20; and Z1 represents wherein, R3 represents an alkyl group which may have a substituent, an aryl group which may have a substituent or an aralkyl group which may have a substituent; and n represents an integer of from 0 to 5, wherein, R4 represents an alkyl group, wherein, R5 and R6, which may be the same or different, each represent a hydrogen atom or an alkyl group; X represents an alkylene group which may have a substituent; Y represents a divalent connecting group; Z2 represents a heterocyclic group which may have a substituent; and l represents 0 or 1.