Patent ID: 8453076
Filing Date: 2013-05-28
Classification: G03F

Abstract:
1. A method comprising: dividing optical wave data for a semiconductor device design, by a processor of a computing device, into a plurality of regions; after dividing the optical wave data into the regions, performing first wavefront engineering on the optical wave data of each region, by the processor, taking into account just the optical wave data of each region and not taking into account the optical wave data of a plurality of neighboring regions of each region; after performing the first wavefront engineering on the optical wave data of each region, normalizing the optical wave data of each region, by the processor, based on results of the first wavefront engineering; and, after normalizing the optical wave data of each region, performing second wavefront engineering on the optical wave data of each region, by the processor, based at least on the optical wave data of each region as has been normalized, taking into account the optical wave data of each region and a guard band around each region that includes the optical wave data of the neighboring regions of each region.