Patent ID: 7707540
Filing Date: 2010-04-27
Classification: G03F,H01L

Abstract:
1. An exposure data generation method using a computer for generating exposure data for exposing a resist film formed on a multi-layered semiconductor substrate by a charged particle beam, comprising: obtaining exposure data indicating a pattern to be exposed by the charge particle beam and an amount of exposure of the charge particle beam generated from layout data indicating a pattern to be formed on the resist film; performing exposure verification for extracting an inappropriate point of the exposure data, using at least one of a reflective coefficient and a transmission coefficient for calculating a backward scatter intensity; modifying the value of the at least one of the reflective coefficient and the transmission coefficient when the inappropriate point is extracted from the exposure data by the exposure verification; calculating the backward scatter intensity using the at least one of the reflective coefficient and the transmission coefficient whose value is modified; and re-generating exposure data by correcting the pattern or the amount of exposure of the exposure data based on calculated backward scatter intensity.