Patent ID: 7777205

Claim:
An electron beam lithography system for sequentially irradiating an electron beam deflected by a deflector on a shot-by-shot basis to draw a pattern on a surface of a sample mounted on a stage, the system comprising: a deflector for deflecting the electron beam; a beam dimension-adjusting deflector for controlling a dimension of the electron beam; a beam-shaping aperture for changing a shape of the electron beam; a driver configured to drive the deflector and the beam dimension-adjusting deflector to control a shape and a dimension of the electron beam; and a controller for controlling the driver based on drawing data, wherein the controller being configured to control, via the driver, the deflector and the beam dimension-adjusting deflector to generate a plurality of shots having the same dimensions and different shapes on the surface of the sample, irradiates the electron beam as the plurality of shots onto one rectangular or square region to draw a correction pattern, and then adjusting the shape of the electron beam to draw a pattern with a shape-adjusted electron beam based on the correction pattern.