Patent ID: 8429573

Claim:
A method for performing electron beam exposure by an electron beam exposure apparatus comprising: correcting a dose of electron beam exposure using design data of a semiconductor device; generating electron beam exposure data, used for electron beam exposure, and photoexposure data, used for photoexposure, from the design data of a semiconductor device; extracting differential information that indicates a differential portion between a shape of an electron beam exposure pattern formed on a substrate through electron beam exposure on a basis of the electron beam exposure data and a shape of a photoexposure pattern formed on the substrate through photoexposure on a basis of the photoexposure data of the semiconductor device; determining whether a size of the differential portion between the shape of the electron beam exposure pattern and the shape of the photoexposure pattern falls within a reference value; acquiring shape changed exposure data in accordance with the difference information between the shape of the photoexposure pattern and an exchanged shape of an electron beam exposure pattern that is changed in accordance with the photoexposure pattern while the dose of electron beam exposure is fixed, and updating by overwriting the electron beam exposure data with the shape changed exposure data if the size of the differential portion does not fall within the reference value; repeating the extracting differential information, the determining and the acquiring shape changed exposure data when the size of the differential portion falls outside the predetermined reference value; and performing electron beam exposure, using the updated electron beam exposure data, by the electron beam exposure apparatus.