Patent ID: 7657863
Filing Date: 2010-02-02
Classification: B82Y,H01J

Abstract:
1. A method for calculating area values of a pattern written by using a charged particle beam, comprising: storing data of a pattern in a data storing device; inputting the data of the pattern from the data storing device; virtually dividing the pattern into a plurality of mesh-like first square regions surrounded by first grids defined at intervals of a predetermined size; virtually dividing the pattern into a plurality of mesh-like second square regions surrounded by second grids defined at intervals of the predetermined size, the second grids being positionally deviated from the first grids by a half of the predetermined size; distributing an area value of a sub-pattern in each of the second square regions to a plurality of apexes of each of the second square regions such that a center-of-gravity position of the sub-pattern does not change, the sub-pattern being a part of the pattern; and outputting the distributed area values as area values, for correcting a proximity effect, defined at the center position of each of the first square regions.