Patent ID: 8003294

Claim:
A photosensitive composition comprising: (A) a compound capable of generating an acid represented by formula (I) upon irradiation with actinic ray or radiation; and (B) a resin that decomposes by the action of an acid to increase its solubility in an alkali developer wherein Ra represents an alkyl group substituted with a fluorine atom, or an aryl group substituted with a fluorine atom or a group having a fluorine atom; Rb represents an alkyl group not substituted with a fluorine atom on an α-position of the alkyl group, or a phenyl group not substituted with a fluorine atom or a group having a fluorine atom, provided that the alkyl group represented by Rb is selected from the group consisting of an alkyl group not having a substituent and an alkyl group having any of an alkoxyl group, an alkoxycarbonyl group, a cyano group and an oxo group as a substituent, and further provided that the phenyl group represented by Rb is selected from the group consisting of a phenyl group not having a substituent and a phenyl group having any of an alkyl group, an alkoxyl group, an alkoxycarbonyl group and a cyano group as a substituent; and all the repeating units of resin (B) consist of (meth)acrylate repeating units.