Patent ID: 6861657
Filing Date: 2005-03-01
Classification: B82Y,G03F,H01J

Abstract:
1. An electron beam exposure apparatus comprising: an electron gun which emits an electron beam; a mask stage on which an electron beam exposure mask for intercepting part of said electron beam is placed, said electron beam exposure mask including a wafer stage on which a wafer provided with an electron beam resist film is placed; a first electron beam optical system which projects said electron beam onto said electron beam exposure mask; a second electron beam optical system which projects said electron past said electron beam exposure mask onto said electron beam resist film; a storage device which stores the address of a defective first defined mask among said plurality of first defined mask and the address of a second defined mask having a pattern configuration to be used instead of said defective first defined mask; and a control device which controls the deflection of said electron beam in said first and second electron beam optical systems, said control device, when the address of said defective first defined mask is designated, replacing it with the address of said second defined mask having a pattern configuration to be used instead of said defective first defined mask.