Patent ID: 7534554
Filing Date: 2009-05-19
Classification: G03F,Y10S

Abstract:
1. A method of manufacturing a semiconductor integrated circuit device, which comprises the step of performing photolithography in which a coating of a photoresist is applied onto a substrate and then an exposure and a development is carried out to form a resist pattern; wherein: a chemically amplified photoresist is used as said photoresist, the chemically amplified photoresist comprising: a photo acid generator; an amount of quencher; and a salt having a buffering function for an acid which is generated from said acid generator by irradiation in an amount that is not less than one time but not greater than ten times the amount of quencher, wherein, said salt having the buffering function for the acid generated from said acid generator is specifically a salt derived from a long chain alkylbenzenesulfonic acid or a long chain alkoxybenzenesulfonic acid and an organic amine that is a basic compound, being expressed by the Formula (1): wherein each R independently represents a hydrogen atom or a straight, branched or cyclic alkyl or alkoxy group containing from 1 to 4 carbons with or without substitution; n is 1; m is an integer of 3 to 23; k is an integer of 0 to 4; 1 is an integer of 1 to 3; and B is any one of primary, secondary and tertiary aliphatic amines, mixed amines, aromatic amines, heterocyclic amines, nitrogen-containing compounds with a carboxy group, nitrogen-containing compounds with a sulfonyl group, nitrogen-containing compounds with a hydroxy group, nitrogen-containing compounds with a hydroxyphenyl group, alcoholic nitrogen-containing compounds, nitrogen-containing compounds with a cyano group, amide derivatives, imide derivatives and nitrogen-containing compounds comprising one or more oxygen atom.