Patent ID: 8475999

Claim:
A photoresist composition comprising a resin, an acid generator and a compound represented by the formula (C1): wherein R c2 represents a C6-C10 aromatic hydrocarbon group having at least one nitro group and the aromatic hydrocarbon group can have one or more substituents other than a nitro group, and R c1 group represented by the formula (1): wherein R c4 represents a hydrogen atom, or a linear, branched chain or cyclic C1-C6 aliphatic hydrocarbon group, R c5 represents a C1-C30 divalent hydrocarbon which can have one or more substituents selected from the group consisting of a halogen atom, a hydroxyl group a mercapto group(—SH), an amino group and a carbamoyl group (—CONH 2 ), and one or more —CH 2 — in the divalent hydrocarbon group can be replaced by —O—, —CO—, —S— or —NR c15 — in which R c15 represents a hydrogen atom or a linear or branched chain C1-C4 alkyl group, and one or more —CH═ in the divalent hydrocarbon group can be replaced by —N═, R c4 and R c5 and can be bonded each other to form a ring, together with the nitrogen atom to which R c4 and R c5 are bonded, and R c3 represents a group represented by the formula (3-1), (3-2), (3-3): wherein R c6 , R c7 , R c8 , R c9 , R c10 , R c11 , R c12 , R 13 and R c14 each independently represent a C1-C30 hydrocarbon group which can have one or more hydroxyl groups, and one or more —CH 2 — in the C1-C30 hydrocarbon group can be replaced —O—, —CO—, —S— or —NR c16 — in which R c16 represents a hydrogen atom or a linear or branched chain C1-C4 alkyl group and R c6 and R c7 can be bonded each other to form a ring together with the carbon atom to which R c6 and R c7 are bonded, and R 9 and R c10 can be bonded each other to form a ring together with the carbon atom to which R c9 is bonded and the oxygen atom to which R c10 is bonded.