Patent ID: 7546178

Claim:
An evaluation system comprising hardware resources of: an error calculation module configured to calculate error information on mutual optical system errors among plurality of aligners; a simulation module configured to simulate device patterns to be delineated by each of the aligners based on the error information; an evaluation module configured to evaluate whether each of the aligners has appropriate performances, which are determined by design specifications required by a product, for electing a group of appropriate aligners based on the simulated device patterns; a virtual dangerous pattern extraction module configured to extract a pattern, which is defined by standard values required by design guidelines of the product, as a virtual dangerous pattern for each of the elected aligners among the simulated device patterns; and a confirmation module configured to compare a shape of the virtual dangerous pattern with a shape of an actual dangerous pattern actually delineated by exposing the virtual dangerous pattern on an exposed object, for each of the elected aligners, so as to determine whether each of the elected aligners can be used for manufacturing the product.