Patent ID: 7875746

Claim:
A positive photosensitive composition comprising: (A) a compound capable of generating a compound represented by formula (II) upon irradiation with actinic rays or radiation: wherein R 1 and R 3 each independently represents a monovalent organic group, provided that at least either one of R 1 and R 3 has a proton acceptor functional group, R 1 and R 3 may combine to form a ring and the ring formed may have a proton acceptor functional group; X 1 , X 2 and X 3 each independently represents —CO— or —SO 2 —; A represents a divalent linking group; B represents a single bond, an oxygen atom or —N(Rx)—; Rx represents a hydrogen atom or a monovalent organic group; when B is —N(Rx)—, R 3 and Rx may combine to form a ring; and n represents 1, said compound being a sulfonium salt compound of the compound represented by formula (II) or an iodonium salt compound of the compound represented by formula (II), (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 a 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.