Patent ID: 6195084
Filing Date: 2001-02-27
Classification: G06F

Abstract:
A method for producing semiconductor devices comprising the steps of:placing a first exposure mask in opposition to a resist film on a semiconductor wafer wherein a plurality of circuit patterns are formed repeatedly on a substrate of said exposure mask;shielding one or more of said circuit patterns with a blind mask, where said one or more said circuit patterns face an edge of said semiconductor wafer while remaining circuit patterns do not overlap said edge;exposing said resist film through the said remaining circuit patterns of said first exposure mask which are not shielded with said blind mask to form exposed remaining circuit patterns and partially exposed resist film portions outside an edge of said exposed remaining circuit patterns;exposing the partially exposed resist film portions by irradiating a light through at least one of a plurality of light passing patterns on a second exposure mask; anddeveloping said resist film.