Patent ID: 8563952
Filing Date: 2013-10-22
Classification: B82Y,H01J,Y10S

Abstract:
1. A charged particle beam writing apparatus, comprising: a judgment unit configured to input information about a stripe region height, and to judge, when a write region is divided into a plurality of stripe regions in a thin rectangular shape by the stripe region height, whether a height of a last stripe region of the plurality of stripe regions is narrower than the stripe region height; a stripe division unit configured to divide the write region into a plurality of stripe regions in the thin rectangular shape in such a way that the last stripe region and a stripe region prior to the last stripe region are combined to create one stripe region and stripe regions at least two stripe regions prior to the last stripe region are each created as stripe regions of the stripe region height if the height of the last stripe region is narrower than the stripe region height; a processing region division unit configured to divide each stripe region of the plurality of stripe regions divided into a plurality of processing regions in such a way that a number of beam shots is equivalent for each stripe region; a pattern density operation unit configured to operate a pattern density in each processing region in parallel for the plurality of processing regions for each stripe region; a dose operation unit configured to operate a dose of a beam by using the pattern density operated; and a pattern generator configured to write a pattern on a target object by using a charged particle beam of the dose operated.