Patent ID: 8877969

Claim:
A photosensitive composition comprising: (A) a compound capable of generating a compound represented by formula (I) upon irradiation with actinic rays or radiation: wherein R 1 and R 2 each independently represents a monovalent organic group, provided that at least either one of R 1 and R 2 has a proton acceptor functional group, R 1 and R 2 may combine to form a ring and the ring formed may have a proton acceptor functional group; and X 1 and X 2 each independently represents —CO— or —SO 2 —, said compound (A) being a sulfonium salt compound of the compound represented by formula (I) or an iodonium salt compound of the compound represented by formula (I); (B) a compound capable of generating an acid upon irradiation with actinic rays or radiation; and (C) a resin capable of decomposing under an action of an acid to increase the solubility of the resin (C) in an alkali developer, wherein: the proton acceptor functional group has a partial structure selected from the group consisting of a crown ether structure, an aza-crown ether structure, a tertiary amine structure, a secondary amine structure, a primary amine structure, a pyridine structure, an imidazole structure, a pyrazine structure and an aniline structure; when the proton acceptor functional group contains a tertiary amine, a secondary amine, or a primary amine, as a partial structure, a carbon atom connected to a nitrogen atom in the tertiary amine, the secondary amine, or the primary amine connects only to one or more hydrogen, carbon, and/or oxygen atoms; the resin (C) has no aromatic group; and the compound (A) capable of generating a compound represented by formula (I) upon irradiation with actinic rays or radiation is a compound represented by the following formula (A1) or (A2): wherein R 201 , R 202 and R 203 each independently represents an organic group, provided that when two members out of R 201 to R 203 are both an alkylene group, the two alkylene groups may combine to form a ring structure, and the ring may contain an oxygen atom, a sulfur atom, an ester bond, an amide bond or a carbonyl group; X represents an anion of the compound represented by formula (I); and R 204 and R 205 each independently represents an aryl group, an alkyl group or a cycloalkyl group.