Patent ID: 6300033
Filing Date: 2001-10-09
Classification: G03F

Abstract:
A positive photoresist composition comprising (A) novolak resins containing p-cresol, m-cresol and 2,5-xylenol as constitutive units and having an ortho-ortho bonding content of 20% to 80% and (B) a photosensitizer, wherein said Ingredient (B) comprises:(B-1) a quinonediazide ester of ##STR14##and(B-2) a quinonediazide ester of at least one compound selected from compounds represented by the following formula (III) and (IV): ##STR15##wherein each of R.sup.19 and R.sup.20 is independently an alkyl group having 1 to 5 carbon atoms, and n denotes 0 or an integer of 1 to 8.