Patent ID: 6159644
Filing Date: 2000-12-12
Classification: G03F,H01J,Y10S

Abstract:
A method of fabricating a semiconductor device, comprising:a first exposure step of irradiating a mask with light from a light source so as to expose a pattern from the mask to a substrate;a second exposure step of exposing said pattern to the resulting substrate with the use of an electron beam;a first measurement step of measuring a predetermined coordinate position in the pattern formed at said first exposure step;a second measurement step of measuring a predetermined coordinate position in the pattern formed at said second exposure step;a step of comparing the coordinate position measured at the first measurement step with a design position in said pattern so as to determine a first error quantity;a step of comparing the coordinate position measured at the second measurement step with the design position of said pattern so as to determine a second error quantity; anddrawing with exposure data on said electron beam corrected by said first error quantity and said second error quantity.