Patent ID: 7325223
Filing Date: 2008-01-29
Classification: G03F

Abstract:
1. A method comprising: synthesizing a first binary photolithography mask; estimating an electric field that would be produced at pixel locations on a wafer by the synthesized mask in use; developing perturbations to the estimated electric field generated by the first mask in use at the pixel locations by comparing a desired pattern to a pattern estimated to be created on a microelectronic wafer by an aerial image generated from the first mask, calculating the effect of the electric field at other pixel locations within the ambit of each pixel location, and then modifying pixel values of the first mask based on the comparison and calculations to generate the perturbations; adding the contributions of the other pixel locations to the electric field at each pixel location; and synthesizing a second binary photolithography mask by applying the added contributions from the perturbations to the first mask.