Patent ID: 6140010
Filing Date: 2000-10-31
Classification: G03F

Abstract:
A negative photoresist composition comprising:a polymer which contains a repetition unit which is expressed by a general chemical formula (1) and has a weight average molecule weight in a range of 1000 to 500000;a crosslinker composed of a compound which contains a functional group which is expressed by a general chemical formula (2); anda photo-acid generator which generates acid in response to a light ##STR62## where in the general chemical formula (1), R.sup.1 is a hydrogen atom or a methyl group, R.sup.2 is an alkylene group containing carbon atoms in a range of 7 to 18 and having a bridged cyclic hydrocarbon group, and ##STR63## where in the general chemical formula (2), X is a group expressed by a general chemical formula (3), a hydrogen atom, a hydrocarbon group containing carbon atoms in a range of 1 to 6, an alkoxy group containing carbon atoms in a range of 1 to 3, or a hydroxyl group, a1, a2 and a3 are 1 or 2, respectively, b1, b2 and b3 are 0 or 1, respectively, and a1+b1=2, a2+b2=2, and a3+b3=2, and R.sup.8 is a hydrogen atom, or an alkyl group containing carbon atoms in a range of 1 to 6, ##STR64##