Patent ID: 7966580

Claim:
A process-model generation method comprising: forming a test pattern of a film to be processed by exposing a test mask having a mask pattern formed thereon with a lithography system; obtaining pattern information including at least one of a dimension of pattern width of the test pattern, a dimension of pattern space of the test pattern, pattern position information in the entire area of the test pattern, and pattern density for each divided predetermined area in the test pattern; generating, with respect to various pattern areas with different pattern information, a plurality of process models having a model parameter adjusted so as to correspond to the pattern information for each of the various pattern areas; performing a simulation of the mask pattern by using each of the process models to predict a plurality of model patterns; calculating a difference in dimension between the test pattern and each of the plurality of model patterns to the pattern information; extracting a model pattern in which the difference in dimension from the test pattern is within a scope of specification from the plurality of model patterns for each area divided according to the pattern information; and specifying the process model, which predicts the extracted model pattern, as the mask pattern.