Patent ID: 9672300
Date: 2017-06-06
CPC Classifications: G03F,G06F

Claim:
1. A method for generating a pattern of a cell in a cell library used for a mask manufacturing method for manufacturing the mask, the method comprising: obtaining initial patterns of a plurality of cells as a cell pattern; setting, as set parameter values, a cell pattern parameter value of the cell pattern and an exposure condition parameter value when the cell pattern is illuminated to project image of the pattern of the cell onto a substrate to expose the substrate; calculating, via a computer, images of the plurality of cells having the set cell pattern parameter value on an image plane of a projection optical system under a exposure condition having the set exposure condition parameter value when the plurality of cells are arranged on an object plane of the projection optical system so that the plurality of cells are separated from each other with a distance in which an optical proximity effect is not exerted on each other; obtaining an evaluation value of the calculated images; changing the set cell pattern parameter value and the set exposure condition parameter value; repeating calculating the image and obtaining the evaluation value using the changed parameter values and changing the set parameter values; determining, as the patterns of the plurality of cells configured to be used in generating the pattern of the mask, a cell pattern having a cell pattern parameter value when the evaluation value obtained by the repeating satisfies a predetermined evaluation standard; and storing the determined patterns of the plurality of cells in the cell library, wherein the mask manufacturing method comprises: obtaining the determined pattern of the cell from the cell library, generating a mask pattern using the obtained patterns of the plurality of cells, and manufacturing the mask including the generated mask pattern using data of the generated mask pattern.