Patent ID: 7200833
Filing Date: 2007-04-03
Classification: G03F

Abstract:
1. An edge deviation calculation method in which a desired pattern is compared with a finish pattern to be formed on a wafer, the finish pattern being predicted from a design pattern, based on a calculation of a light beam intensity, and a deviation quantity of the finish pattern from the desired pattern at each edge of the finish pattern and the desired pattern is calculated, the calculation method comprising: setting a reference light beam intensity for setting the desired pattern on a wafer; setting an evaluation point only on a target position of the desired pattern for comparison of the finish pattern with the desired pattern; calculating a light beam intensity at the evaluation point; calculating a differentiation value of the light beam intensity at the evaluation point; calculating an intersection of the differentiation value with the reference light beam intensity; calculating a difference between the intersection and the evaluation point, the difference being defined as an edge deviation quantity of the finish pattern from the desired pattern; and outputting the edge deviation quantity.