Patent ID: 7446852
Filing Date: 2008-11-04
Classification: G03F

Abstract:
1. A projection exposure mask acceptance decision system comprising: an assurance object measuring unit configured to measure a plurality of quality assurance objects relating to a projection exposure mask; a first exposure characteristic deterioration quantity calculating unit configured to calculate a first exposure characteristic deterioration quantity caused by deviations in average values of the plurality of quality assurance objects measured by the assurance object measuring unit; a second exposure characteristic deterioration quantity calculating unit configured to calculate a second exposure characteristic deterioration quantity caused by dispersion in the plurality of quality assurance objects measured by the assurance object measuring unit; a sum calculating unit configured to calculate a simple sum of the first exposure characteristic deterioration quantity and the second exposure characteristic deterioration quantity; a root sum square calculating unit configured to calculate a root sum square of the first exposure characteristic deterioration quantity and the second exposure characteristic deterioration quantity; an entire exposure characteristic deterioration quantity calculating unit configured to calculate an entire exposure characteristic deterioration quantity as an interior division value of the simple sum and the root sum square; and a judgment unit configured to judge whether the entire exposure characteristic deterioration quantity is an acceptable value.