Patent ID: 6479209
Filing Date: 2002-11-12
Classification: G03F,Y10S

Abstract:
A positive photosensitive composition comprising:(A) a compound generating an acid on irradiation of an active light ray or radiation, and (B) a resin having (i) at least one polycyclic alicyclic group, (ii) at least one group which decomposes by the action of an acid represented by formula (I) and increases the solubility in an alkali developer, and (iii) at least one group which decomposes by the action of an acid represented by formula (II) and increases the solubility in an alkali developer: wherein R1 to R5, which may be the same or different, each represents a hydrogen atom or an alkyl group, cycloalkyl group, alkenyl group, acyl group or alkoxycarbonyl group which may have a substituent, R6 represents an alkyl group, cycloalkyl group or alkenyl group which may have a substituent, provided that two of R1 to R3 in formula (I) or two of R4 to R6 in formula (II) may be combined to form a ring structure comprising from 3 to 8 carbon atoms or heterocyclic atoms and the molar ratio of the group represented by formula (I) to the group represented by formula (II) in resin (B) is from 20:80 to 80:20.