Patent ID: 8185848

Claim:
An apparatus for performing a manufacturing method for photomask comprising; an unit for extracting first data from the design data indicating a side of a first figure element; an unit for assigning identical first identification data to identical first data indicating a side of a first figure element; an unit for configuring a side group from the side of a first figure element and sides of a first figure element in a constant distance of the side of a first figure element; an unit for assigning identical second identification data to the identical side data group indicating a side group; an unit for estimating a influence of an optical proximity effect on the side group; an unit for generating second data indicating a side of a second figure element for compensating the influence of the optical proximity effect on the side group; an unit for configuring figure data indicating plurality of a side of a second figure element by assigning identical second data to the first data, the first data having identical side data group with identical second identification data; and an unit for forming photomask patterns on the photomask from on the figure data.