Positive-working radiation-sensitive composition

摘要

A positive-working radiation-sensitive composition containing a resin having an acid-decomposing group having a specific acetal structure, and being decomposed by the action of an acid to increase the solubility thereof in an alkali developer; a compound generating an acid by the irradiation of an active light or radiation and contributes to the decomposition reaction of the acid-decomposing group of the resin; a compound generating an acid by the irradiation of an active light or radiation but does not contribute to the decomposition reaction of the acid-decomposing group of the resin; a surface active agent, and a solvent.