Patent ID: 6187500
Filing Date: 2001-02-13
Classification: C08G,C08L,G03F

Abstract:
A positive photoresist composition comprising:(A) an alkali-soluble novolak resin, and(B) a naphthoquinonediazide ester,said alkali-soluble novolak resin being obtained synthetically by condensation of phenol compounds and an aldehyde or ketone, and said phenol compounds being composed of 1% to 20% by mole of a phenol compound represented by the following formula (I): ##STR24##wherein R.sup.1 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, 30% to 95% by mole of m-cresol, and 2% to 50% by mole of 2,5-xylenol.