Patent ID: 6207343
Filing Date: 2001-03-27
Classification: G03F,Y10S

Abstract:
A positive photosensitive composition, comprising:(a) a compound having a group represented by the following general formula (Ia) which decomposes by the action of an acid to enhance its solubility in an alkaline developing solution; and(b) a compound which generates an acid upon irradiation with actinic rays or radiation: ##STR74##wherein R.sub.1a and R.sub.2a may be the same or different and each represent a hydrogen atom or C.sub.1-4 alkyl group; W.sub.a represents a single bond or divalent organic group; and R.sub.3a represents a group which decomposes by the action of an acid and is selected from the group consisting of --COOA.sup.0, --O--A.sup.0 and --O--C(.dbd.O)--O--A.sup.0, wherein A.sup.0 represents --C(R.sup.01)(R.sup.02)(R.sup.03), --Si(R.sup.01)(R.sup.02)(R.sup.03) or --C(R.sup.04)(R.sup.05)--O--R.sup.06, where R.sup.01, R.sup.02, R.sup.03, R.sup.04 and R.sup.05 may be the same or different and each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group or an aryl group, R.sup.06 represents an alkyl group or an aryl group, two of R.sup.01 to R.sup.03 may be connected to each other to form a ring or two of R.sup.04 to R.sup.06 may be connected to each other to form a ring, with the proviso that at least two of R.sup.01 to R.sup.03 are groups other than a hydrogen atom.