Patent ID: 6560767
Filing Date: 2003-05-06
Classification: G03F

Abstract:
A process for making photomask pattern data in which correction pattern data obtained by correcting original figure data of design data used in the pattern exposure system for carrying out pattern exposure for forming a pattern of photomask in order to obtain the objective shape of pattern on a wafer is newly generated as the figure data for the pattern exposure system, characterized in that the method comprises the steps of: (a) a first step for fetching original data of design data as digital data; (b) a second step for extracting the information on distortion (deformation) of formed pattern of from the original figure data when producing a photomask using the original figure data; (c) a third step for extracting the information on the information on distortion (deformation) of formed pattern when producing a pattern on a wafer using the photomask; (d) a fourth step for obtaining the information for determining parts to be corrected and the amount of correction by combining the information obtained in the second step and the information obtained in the third step; and (e) a fifth step for generating the correction figure for correction applied to the original figure data of design data, on the basis of the information obtained in the fourth step, so that correction pattern data is obtained.