Patent ID: 6809319
Filing Date: 2004-10-26
Classification: B82Y,H01J

Abstract:
Electron beam writing equipment comprising: an electron source; an electron optics system irradiating for scanning an electron beam emitted from said electron source on a sample via deflection means having at least two different deflection speeds and an objective lens to form a desired pattern on said sample; a stage mounting said sample; a mark for beam correction provided on said stage; an electron detector detecting a backscattered electron, a secondary electron or a transmission electron obtained by irradiation of said electron beam; a function moving said electron beam by high speed scanning with said deflection means to repeat formation of a patterned beam; a function moving said electron beam on said mark for beam correction by low speed scanning with said deflection means in synchronization with one cycle of said repetition; and a function detecting a backscattered electron or a secondary electron emitted from said mark for beam correction and near it by said low speed scanning or a transmission electron transmitted through said mark for beam correction to correct the position or the deflection distance of said electron beam or blanking time from said detected result.