Patent ID: 7049610
Filing Date: 2006-05-23
Classification: B82Y,H01J

Abstract:
1. A charged particle beam exposure method of controlling irradiation of a substrate with a charged particle beam, comprising the steps of: emitting a charged particle beam with a charged particle beam source; forming an intermediate image of said charged particle beam source with a first electron optical system; performing on-off control of the charged particle beam with a deflector, wherein an on-state is achieved by causing the charged particle beam from said first electron optical system not to be deflected, and an off-state is achieved by causing the charged particle beam to be deflected; performing passing control of the charged particle beam with a blanking aperture stop having an aperture, the charged particle beam being passed from the aperture when the charged particle beam is not being deflected by said deflector, the charged particle beam being blocked when the charged particle beam is being deflected by said deflector; and projecting the intermediate image formed by said first electron optical system onto the substrate with a second electron optical system by directing the charged particle beam passing through the aperture onto the substrate, wherein a size of the charged particle beam on the blanking aperture stop is made larger than a size of an aperture of the blanking aperture stop.