Patent ID: 6107007
Filing Date: 2000-08-22
Classification: G03F

Abstract:
A lithography process for forming a pattern having different sizes or different shapes of pattern components, comprising the steps of:(a) exposing a resist to a predetermined light pattern;(b) developing the resist to form the resist pattern by employing a lithography-developing solution containing a surfactant at a concentration from 100 ppm to 1,000 ppm to dissolve and remove a region of the resist, said region not greater than 0.5 .mu.m; and(c) removing the surfactant from (i) a surface of the resist or (ii) a surface of a basic material of the resist, employing ultrapure water containing ozone in a concentration of not less than 0.1 ppm, the surfactant of the following formula [I]:HO(CH.sub.2 CH.sub.2 O).sub.a (CH(CH.sub.3)CH.sub.2 O).sub.b (CH.sub.2 CH.sub.2 O).sub.c H [I]wherein a, b and c are each an integer, and which surfactant satisfies a condition expressed by the following equation:(A+C)/(A+B+C).ltoreq.0.2wherein A is a formula weight of the moiety HO(CH.sub.2 CH.sub.2 O).sub.a, B is a formula weight of the moiety (CH(CH.sub.3)CH.sub.2 O).sub.b, and C is a formula weight of the moiety (CH.sub.2 CH.sub.2 O).sub.c H in formula [I].