Patent ID: 6833309
Filing Date: 2004-12-21
Classification: H01L,Y10S

Abstract:
A method of manufacturing a semiconductor device, comprising the steps of:forming a first pattern having alignment marks and asymmetry measurement patterns disposed in the neighborhood of the alignment marks on a semiconductor substrate; forming a resist film on the surface of the first pattern; aligning a second pattern formed on a mask with each of the alignment marks; and transferring the second pattern onto the resist film, wherein the aligning step includes, step of measuring asymmetry of each of the asymmetry measurement patterns and a step of offsetting alignment of the second pattern with the alignment marks based on measured asymmetry of each of the asymmetry measurement patterns, wherein the step of measuring asymmetry is based upon scatterometry and includes a step of applying light at a pair of different incident angles or polarization angles to each of the asymmetry measurement patterns so as to measure reflected light intensities of the lights, wherein the asymmetry is measured by the asymmetry measurement patterns.