Patent ID: 7353493

Claim:
An optical proximity correction device, comprising: a data input means for inputting data of a pattern to be processed; a first corrected pattern generating means for generating a first corrected pattern by correcting the pattern to be processed based on a model adjusted with reference to measured data with proper focus and exposure dose; a second corrected pattern generating means for generating a second corrected pattern by correcting the pattern to be processed based on a model adjusted with reference to measured data with at least one of focus and exposure dose deviating; and a composed pattern generating means for generating a composed pattern by combining the first corrected pattern and the second corrected pattern, the composed pattern generating means including: a first dimensional deviation calculating means for calculating a dimensional deviation between the pattern to be processed and the first corrected pattern as for at least part of edges; a second dimensional deviation calculating means for calculating a dimensional deviation between the pattern to be processed and the second corrected pattern as for at least part of edges; and a weighted average calculating means for calculating a weighted average of the dimensional deviations each calculated by the first dimensional deviation calculating means and the second dimensional deviation calculating means.