Patent ID: 6824948
Filing Date: 2004-11-30
Classification: G03F

Abstract:
A negative-working resist composition for electron beams or X-rays comprising (A) a compound generating an acid and/or radical species by the irradiation of electron beams or X-rays selected from the groups consisting of a sulfonate compound of sulfonium, a sulfonate compound of iodonium, a sulfonic acid ester compound of N-hydroxyimide and a disulfonyldiazomethane compound, (B) a resin which is insoluble in water and soluble in an alkali aqueous solution and having a repeating unit shown by the following formula (a), (C) a crosslinking agent causing crosslinking with the resin of component (B) by the action of an acid, (D) a compound having at least one unsaturated bond capable of being polymerized by an acid and/or a radical and (E) an organic basic compound, wherein R1 represents a hydrogen atom, a halogen atom, a cyano group, or an alkyl or haloalkyl group which may have a substituent;R2 represents a hydrogen atom, or an alkyl, cycloalkyl, aryl, aralkyl, or acyl group which may have a substituent; R3 and R4, which may be the same or different, each represents a hydrogen atom, a halogen atom, a cyano group, or an alkyl, cycloalkyl, alkenyl, aralkyl, or aryl group which may have a substituent; A represents a single bond, or a divalent alkylene, alkenylene, cycloalkylene, or arylene group which may have a substituent, or â€”Oâ€”, â€”SO2â€”, â€”Oâ€”COR5â€”, â€”COâ€”Oâ€”R6â€”, or â€”COâ€”N(R7)â€”R8â€”; R5, R6, and R8, which may be the same or different, each represents a single bond, or an alkylene, alkylene, cycloalkylene, or arylene group, which may have a substituent, singly or a divalent group formed by combining the above-described group and at least one kind selected from an ether structure, an ester structure, an amide structure, a urethane structure, and a ureido structure; R7 represents a hydrogen atom, or an alkyl, cycloalkyl, aralkyl, or aryl group which may have a substituent; and n represents an integer of from 1 to 3; provided that plural R28, or R2 and R3 or R4 may combine with each other to form a ring.