Patent ID: 6830867
Filing Date: 2004-12-14
Classification: G03F,Y10S

Abstract:
A positive photosensitive composition comprising(A) an acid generator, which generates an acid upon irradiation with actinic ray or radiation, represented by formula (I) shown below, and (B) a resin having a monocyclic or polycyclic alicyclic hydrocarbon structure and being decomposed by the action of an acid to increase dissolution speed in an alkali developer: wherein R1 to R5, which may be the same or different, each represent a hydrogen atom, a nitro group, a halogen atom, or an unsubstituted or substituted alkyl, alkoxy, alkyloxycarbonyl, aryl or acylamino group, or at least two of R1 to R5 may combine with each other to form a cyclic structure; R6 and R7, which may be the same or different, each represent a hydrogen atom, a cyano group, or an unsubstituted or substituted alkyl or aryl group; Y1 and Y2, which may be the same or different, each represent an unsubstituted alkyl group, an alkyl group having a substituent, an ether linkage group or a sulfide linkage group, or an unsubstituted or substituted alkenyl group, provided that when both Y1 and Y2 are alkyl groups, at least either Y1 or Y2 has a hydroxy group, an ether linkage group or a sulfide linkage group, or each of the alkyl groups contains at least 2 carbon atoms, and provided that Y1 and Y2 do not combine with each other to form a ring; at least one of R1 to R5 and at least either Y1 or Y2 may combine with each other to complete a ring, at least one of R1 to R5 and at least either R6 or R7 may combine with each other to complete a ring, at least two structures represented by formula (I) may be linked together in any of the positions of R1 to R7, Y1 and Y2 via a linkage group; and Xâˆ’ represents a sulfonic acid anion, a carboxylic acid anion, a bis(alkylsulfonyl)imide anion or a tris(alkylsulfonyl)methyl anion.