Patent ID: 11874597
Assignee: SYNOPSYS, INC.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 13:
14. A non-transitory computer readable storage medium comprising instructions which when executed by a processor cause the processor to:
set a threshold value associated with a defect based on stochastic failure rate of the defect;
perform a first optimal proximity correction (OPC) of the mask data using nominal values of mask pattern contours;
identify locations within the first OPC mask data where stochastically determined mask pattern contours may lead to the defect;
place check figures on the identified locations to enable measurement of distances between the stochastically determined mask pattern contours; and
perform a second OPC of the first OPC mask data so as to cause the measured distances to be greater than the threshold value.