Patent ID: 8042068

Claim:
A method, implemented in a memory device, for processing optical proximity correction to correct a layout of a pattern to be formed over a semiconductor wafer for compensation, the method comprising: preparing a chemical mechanical polishing (CMP) map in the memory device; extracting calibration data depending on a focus with the CMP map; correcting optical proximity with the calibration data; and utilizing the calibration data to correct the layout to be formed over the semiconductor wafer for compensation; wherein the CMP map is divided into regions depending on CMP uniformity, the regions defined by boundaries; wherein when a boundary of one of the regions crosses the pattern, the boundary of the region is replaced by a new boundary so that the new boundary does not cross the pattern; and wherein the new boundary is set so that a smaller area of the pattern divided by the boundary may be in a same region where a larger area of the pattern divided by the boundary is included.