Patent ID: 6602646
Filing Date: 2003-08-05
Classification: G03F,Y10S

Abstract:
A positive-working resist composition comprising:(A) a resin containing an alkali-soluble group protected by at least one of moieties containing alicyclic hydrocarbon represented by the following general formulae (pI) to (pVI) and having a residual monomer component content of 0.01 to 4% of the total pattern area as determined by gel permeation chromatography (GPC), which increases in its solution velocity with respect to an alkaline developer by the action of an acid: wherein R11 represents a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group or sec-butyl group; Z represents an atomic group required to form an alicyclic hydrocarbon group with carbon atoms; R12 to R16 each independently represent a C1-4 straight-chain or branched alkyl group or alicyclic hydrocarbon group, with the proviso that at least one of R12 to R14 or either R15 or R16 represents an alicyclic hydrocarbon group; R17 to R21 each independently represent a hydrogen atom, C1-4 straight-chain or branched alkyl group or alicyclic hydrocarbon group, with the proviso that at least one of R17 to R21 represents an alicyclic hydrocarbon group and either R19 or R21 represents a C1-4 straight-chain or branched alkyl group or alicyclic hydrocarbon group; and R22 to R25 each independently represent a C1-4 straight-chain or branched alkyl group or alicyclic hydrocarbon group, with the proviso that at least one of R22 to R25 represents an alicyclic hydrocarbon group; and (B) a compound which is capable of generating an acid by irradiation with an active ray or radiation.