Patent ID: 6730463
Filing Date: 2004-05-04
Classification: G03F

Abstract:
A method for exposing a photoresist layer on a substrate wafer, which comprises the following method steps:in a first exposure step, exposing the photoresist layer in first sections with a first exposure radiation and in second sections with a second exposure radiation, the first exposure radiation being phase-displaced by 180Â° relative to the second exposure radiation, and the first and second sections adjoining one another in boundary regions that are not sufficiently exposed; determining first and second boundary regions respectively having less than a given predetermined least distance from one another; and in a second exposure step, reexposing the photoresist layer in the first boundary region with a third exposure radiation, and in the second boundary region with a fourth exposure radiation, the third exposure radiation being phase-displaced by 180Â° relative to the fourth exposure radiation.