Patent ID: 6927009

Claim:
A positive photosensitive composition comprising (A) an acid generator, which generates an acid upon irradiation of an actinic ray or radiation, represented by formula (I) shown below, and (B) a resin that has a monocyclic or polycyclic alicyclic hydrocarbon structure and is decomposed by the action of an acid to increase a solubility rate in an alkali developing solution: wherein R 1 to R 5 , which may be the same or different, each represent a hydrogen atom, an alkyl group, an alkoxy group, a nitro group, a halogen atom, an alkoxycarbonyl group or an aryl group, or at least two of R 1 to R 5 may be combined with each other to form a ring structure; R 6 and R 7 , which may be the same or different, each represent a hydrogen atom, an alkyl group, a cyano group or an aryl group; Y 1 and Y 2 , which may be the same or different, each represent an alkyl group, an aryl group, an aralkyl group or an aromatic group containing a hetero atom, or Y 1 and Y 2 may be combined with each other to form a ring; Y 3 represents a single bond or a divalent connecting group; and X represents a non-nucleophilic anion; provided that at least one of R 1 to R 5 and at least one of Y 1 and Y 2 are combined with each other to form a ring or at least one of R 1 to R 5 and at least one of R 6 and R 7 are combined with each other to form a ring; and any of R 1 to R 7 and Y 1 to Y 2 may be bonded through a connecting group to form a compound having two or more structures represented by formula (I).