Patent ID: 8466439
Filing Date: 2013-06-18
Classification: B82Y,H01J

Abstract:
1. An electron beam lithography method comprising the steps of: acquiring data, using a column cell controller, on a drawing pattern assigned a rank in accordance with an accuracy required for a device pattern to be formed on a sample; acquiring an upper limit on a size and an upper limit on a long-side length of a divided drawing pattern based on the rank, both of the upper limits being used to generate divided drawing patterns by dividing the drawing pattern; generating data on divided drawing patterns satisfying both of the upper limits; determining a settlement wait time after the deflection of the electron beam based on the rank; and irradiating the electron beam onto the sample in accordance with the data on the divided drawing patterns and the settlement wait time; wherein the drawing pattern is firstly divided by the upper limit on the area size and then divided by the upper limit on the long-side length.