Patent ID: 7473910

Claim:
An electron beam lithography apparatus for concentrically drawing a plurality of circles on a substrate by applying an electron beam while rotating the substrate, comprising: a beam deflection portion for deflecting the electron beam to change an irradiation position of the electron beam; a synchronization signal generation portion for generating a synchronization signal in synchronization with the rotation of the substrate; a controller for controlling the beam deflection portion on the basis of the synchronization signal in order to deflect the electron beam in a rotational radial direction of the substrate and in a rotational tangential direction of the substrate relative to the circle path and in the same rotational direction of the substrate, while drawing transition is performed from one circle to another circle; and a beam cutoff portion for cuffing off the irradiation of the electron beam on the substrate, for a period when the electron beam is deflected in the rotational radial direction.