Patent ID: 6265135
Filing Date: 2001-07-24
Classification: C08F,G03F,Y10S

Abstract:
A positive-working electron beam resist composition comprising:(a) a compound capable of generating an acid by irradiation of an electron beam selected from the group consisting of compounds represented by formulae (I) to (III): ##STR58##wherein R.sub.1 to R.sub.37, which may be the same or different, each represents a hydrogen atom, a straight-chain, branched or cyclic alkyl group, a straight-chain or cyclic alkoxyl group, a hydroxyl group, a halogen atom or --S--R.sub.38, wherein R.sub.38 represents a straight-chain, branched or cyclic alkyl group or an aryl group, and two or more of R.sub.1 to R.sub.15, R.sub.16 to R.sub.27 or R.sub.28 to R.sub.37 may combine to form a ring containing one or two or more selected from the group consisting of a single bond, carbon, oxygen, sulfur and nitrogen; and X.sup.- represents an anion of benzenesulfonic acid, naphthalenesulfonic acid or anthracenesulfonic acid containing at least one selected from the group consisting of at least one fluorine atom, a straight-chain, branched or cyclic alkyl group substituted by at least one fluorine atom, a straight-chain, branched or cyclic alkoxyl group substituted by at least one fluorine atom, an acyl group substituted by at least one fluorine atom, an acyloxy group substituted by at least one fluorine atom, an alkyl or aryl sulfonyl group substituted by at least one fluorine atom, an alkyl or aryl sulfonyloxy group substituted by at least one fluorine atom, an alkyl or aryl sulfonylamino group substituted by at least one fluorine atom, an aryl group substituted by at least one fluorine atom, an aralkyl group substituted by at least one fluorine atom, and an alkoxycarbonyl group substituted by at least one fluorine atom;(b) a resin containing a group which is decomposable by action of an acid to increase solubility in an alkali developing solution; and(c) a fluorine and/or silicon surfactant.