Patent ID: 6313476
Filing Date: 2001-11-06
Classification: B82Y,H01J

Abstract:
A charged beam lithography system comprising:a charged particle optics system for causing a surface of a substrate to be irradiated with a charged beam to a pattern to be written, on the basis of writing data, which are obtained by processing data of said pattern by a predetermined conversion;a proximity effect correction calculating circuit for calculating a corrected dosage by correcting a dosage of said charged beam corresponding to said pattern in view of the influence of the proximity effect wherein charge beam exposures to adjacent patterns are increased by backward scattered electrons produced on the surface of said substrate by the irradiation with said charged beam;a data converter for converting said pattern data into intermediate data to be converted into said writing data;an intermediate data combining circuit for combining said intermediate data, which have been converted from data of said pattern in adjacent first regions, to prepare combined intermediate data corresponding to a pattern in a second region greater than said first regions; anda controller for supplying said combined intermediate data to said proximity effect correction calculating circuit to cause said proximity effect correction calculating means to calculate a correction in said second region to supply the calculated result to said charged beam lithography system to cause said charged beam lithography system to carry out a continuous write operation on said second region.