Patent ID: 7459712

Claim:
A method of measuring pattern dimensions, comprising the steps of: evaluating a relationship between dimensions measured from a cross-sectional shape of a pattern and dimensions measured from an image of the pattern acquired by using a SEM to each of plural patterns having various shapes which are made as measurement objective patterns, and storing relationships evaluated to each of the plural patterns; conducting dimension measurement of an objective pattern from an image of the objective pattern acquired by using the SEM and estimating a cross-sectional shape of the objective pattern from the image of the objective pattern acquired by using the SEM; and revising errors of the dimension measurement of the objective pattern based on the stored relationship between the dimensions measured from the cross-sectional shapes of the plural patterns and the dimensions measured from the images of each of the plural patterns having various shapes previously evaluated by using information on cross-sectional shape of the objective pattern estimated from the image of the objective pattern acquired by using the SEM.