Patent ID: 6911661

Claim:
An electron beam exposure apparatus, which exposes patterns on a wafer by an electron beam, having a lens, comprising: an electron beam producing unit which produces said electron beam; and an electron beam shaping member having a plurality of openings which shape the electron beam, wherein a 1st ratio, which is a ratio between an opening width of a 1st opening among said plurality of the openings in a 1st direction, which is substantially perpendicular to an irradiation direction of the electron beam, and a pattern width of a first pattern, which should be exposed on the wafer by the electron beam shaped by said 1st opening, in the direction corresponding to said 1st direction, and a 2nd ratio, which is a ratio between an opening width of a 2nd opening among said plurality of the openings, in said 1st direction, and a pattern width of a second pattern, which should be exposed on the wafer by the electron beam shaped by said 2nd opening, in the direction corresponding to said 1st direction, are different and wherein said 1st opening is disposed close to a center axis of the lens, and said 2nd opening is disposed farther than a location where the first pattern is disposed from the center axis of the lens.