Patent ID: 6756178
Filing Date: 2004-06-29
Classification: G03F

Abstract:
A positive photoresist composition consisting essentially of:(A) a novolak resin containing equal to or more than 20% by mole of a m-cresol constitutional repeating unit in total phenolic constitutional repeating units and having 1-ethoxyethyl groups substituting for part of hydrogen atoms of phenolic hydroxyl groups; (B) a quinonediazide ester represented by following Formula (I): â€ƒwherein each of R1, R2, R3, R4, R5, R6, R7, and R8 is independently a hydrogen atom, a halogen atom, an alkyl group containing 1 to 6 carbon atoms, an alkoxy group containing 1 to 6 carbon atoms, or a cycloalkyl group; each of R9, R10, and R11 is independently a hydrogen atom or an alkyl group containing 1 to 6 carbon atoms; Q is a hydrogen atom or an alkyl group containing 1 to 6 carbon atoms, or Q is combined with R9 to form a cycloalkyl group containing 3 to 6 carbon members or a residue represented by following Formula (II): â€ƒwherein each of R12 and R13 is independently a hydrogen atom, a halogen atom, an alkyl group containing 1 to 6 carbon atoms, an alkoxy group containing 1 to 6 carbon atoms, or a cycloalkyl group; and c is an integer of from 1 to 3; each of Ds is independently a hydrogen atom or a 1,2-naphthoquinonediazido-5-sulfonyl group, where at least one of Ds is a 1,2-naphthoquinonediazido-5-sulfonyl group; each of a and b is independently an integer of from 1 to 3; d is an integer of from 0 to 3; and n is an integer of from 0 to 3; and (C) a phenolic compound represented by following Formula (III): â€ƒwherein each of R1, R2, R3, R4, R5, R6, R7, and R8 is independently a hydrogen atom, a halogen atom, an alkyl group containing 1 to 6 carbon atoms, an alkoxy group containing 1 to 6 carbon atoms, or a cycloalkyl group; each of R9, R10, and R11 is independently a hydrogen atom or an alkyl group containing 1 to 6 carbon atoms; Q is a hydrogen atom or an alkyl group containing 1 to 6 carbon atoms, or Q is combined with R9 to form a cycloalkyl group containing 3 to 6 carbon members or a residue represented by following Formula (IV): â€ƒwherein each of R12 and R13 is independently a hydrogen atom, a halogen atom, an alkyl group containing 1 to 6 carbon atoms, an alkoxy group containing 1 to 6 carbon atoms, or a cycloalkyl group; and c is an integer of from ito 3; each of a and b is independently an integer of from 1 to 3; d is an integer of from 0 to 3; and n is an integer of from 0 to 3.