Patent ID: 7200834

Claim:
A method of forming an exposure pattern by correcting each of pattern portions constituting a design pattern by a correction amount, said correction amount previously prepared so as to correspond to both a line width of said pattern portion and a space width of a space portion adjacent to said pattern portion, characterized by including the steps of: subjecting said design pattern to graphic form arithmetic operation, to extract each of said pattern portions for each of target line widths, and to extract each of said space portions for each of target space widths; subjecting each of said pattern portions extracted for each of said target line widths and space portions extracted for each of said target space widths to graphic form arithmetic operation based on the corresponding one of said correction amount; and combining each of said extracted pattern portions with each of said extracted space portions to thereby correct said pattern portions having each of said target line widths for each of said target space widths; and subjecting an edge of said design pattern to reduction correction by an amount equivalent to ½ of each of said target line widths and then subjecting said edge of said design pattern to enlargement correction by the same amount, to extract a pattern as a pattern portion having a line width larger than said target line width.