Patent ID: 6677089
Filing Date: 2004-01-13
Classification: H01J,Y10S

Abstract:
A charged particle beam exposure method with performing proximity effect correction by adjusting widths of patterns included in a block pattern, formed on a mask, for being repeatedly used and for collectively exposing, and by calculating a corrected exposure dose, said method comprising the steps of:(a) determining a reference forward scattering intensity on the basis of a forward scattering intensity distribution of a pattern having a minimum design width included in said block pattern; (b) adjusting each pattern width in said block pattern such that a width of a forward scattering intensity distribution at said reference forward scattering intensity becomes equal to a corresponding design width; and (c) determining said corrected exposure dose such that, in regard to each pattern in said block pattern, a value obtained by multiplying a sum of said reference forward scattering intensity and a backscattering intensity by said corrected exposure dose becomes substantially equal to each other.