Patent ID: 6733951
Filing Date: 2004-05-11
Classification: G03F,Y10S

Abstract:
A positive radiation-sensitive composition comprising:(A) at least one compound capable of generating an acid upon irradiation with an actinic ray represented by the following formula (I); and (B) a resin having a group capable of decomposing by the action of an acid to increase the solubility in an alkali developing solution: â€ƒwherein R1, R2, R3, R4 and R5 each represents a hydrogen atom, an alkyl group, an alkoxyl group, a nitro group, a halogen atom, an alkyloxycarbonyl group, or an aryl group, and at least two of R1, R2, R3, R4 and R5 may be bonded to form a cyclic structure; R6 and R7 each represents a hydrogen atom, an alkyl group, a cyano group or an aryl group; Y1 and Y2 each represents an alkyl group, an aryl group, an aralkyl group, or an aromatic group containing a hetero atom, and Y1 and Y2 may be bonded to form a ring; Y3 represents a single bond or a divalent linking group; and Xâˆ’ represents a non-nucleophilic anion; provided that at least one of R1, R2, R3, R4 and R5, and at least one of Y1 and Y2 are bonded to form a ring, or at least one of R1, R2, R3, R4 and R5, and at least one of R6 and R7 are bonded to form a ring; and there may be present two or more structures represented by formula (I) by being bonded at any position of R1 to R7 or at any position of Y1 and Y2 via a linking group, wherein the resin as the (B) component is a resin containing a hydroxystyrene repeating unit.