Patent ID: 9287090
Filing Date: 2016-03-15
CPC Classification: H01J

Claim Text:
1. A multi charged particle beam writing apparatus comprising: a divided shot data generation unit configured to generate, for each shot of multi beams of charged particle beams, data for a plurality of times of divided shots such that irradiation for one shot of each beam is divided into the plurality of times of divided shots each having a different irradiation time; an individual blanking system configured to provide blanking control individually for the each beam of the multi beams, based on the data for the plurality of times of divided shots; an elastic rate correction value acquisition unit configured to acquire, for each divided shot of the plurality of times of divided shots, a correction value for correcting a position deviation of a writing pattern, depending upon a number of ON beams of the multi beams; and a lens configured to correct, for the each divided shot, the position deviation of the writing pattern by using the correction value.