Patent ID: 7514201

Claim:
A positive photosensitive composition comprising (A) an acid generator that generates an acid upon irradiation of an actinic ray or radiation, (B) a resin that has a monocyclic or polycyclic alicyclic hydrocarbon structure and is decomposed by the action of an acid to increase solubility in an alkali developing solution, (C-3) at least one basic compound selected from the group consisting of a hydroxy group and/or ether bond containing primary aliphatic amine, a hydroxy group and/or ether bond containing secondary aliphatic amine and a hydroxy group and/or ether bond containing tertiary aliphatic amine, and (C′) an organic amine basic compound that does not contain an oxygen atom, and wherein the resin of component (B) is a resin containing a repeating unit having a lactone structure represented by the following formula (IV): wherein R 1a represents a hydrogen atom or a methyl group; W 1 represents a single bond, an alkylene group, an ether group, a thioether group, a carbonyl group, an ester group or a combination of two or more thereof; R a1 , R b1 , R c1 , R d1 and R e1 , which may be the same or different, each independently represent a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms; and m and n, which may be the same or different, each independently represent an integer of from 0 to 3, provided that the sum total of m and n is from 2 to 6.