Patent ID: 6376847
Filing Date: 2002-04-23
Classification: B82Y,H01J

Abstract:
A charged particle lithography method comprising:a beam shaping step of shaping an output beam emitted from a charged particle producing source into a predetermined shape; and a design pattern transferring step of transferring a design pattern formed on a mask onto a substrate by repeating partial transfer for transferring a part of said design pattern onto said substrate by allowing said shaped beam to transmit the part of said design pattern and exposing a part of said substrate to said transmitted beam, wherein said design pattern transferring step includes, in conducting said partial transfer, a step of forming a double exposure portion that is doubly exposed in an exposure area on said substrate exposed to said beam, and exposing said exposure area so that an exposure dose in said double exposure portion and an exposure dose in a non-double exposure portion that is not doubly exposed are substantially the same.