Patent ID: 9236154
Filing Date: 2016-01-12
CPC Classification: B82Y,G21K,H01J

Claim Text:
1. A charged-particle beam drawing apparatus comprising: a storage unit configured to store a plurality of time interval patterns which define time intervals between performing a diagnosis of a drift amount of a charged-particle beam; an event information reception unit configured to receive first event information including an occurrence of event and a type of event; a region information acquisition unit configured to acquire region information specifying a region being drawn by the charged-particle beam; a time interval pattern selection unit configured to select a specific time interval pattern from the plurality of time interval patterns based on at least the region information and the type of the event in the first event information; a drift diagnosis control unit configured to diagnose the drift amount of the charged-particle beam at the time intervals defined in the specific time interval pattern after reception of the first event information until second event information is received; and a drawing unit configured to draw a predetermined drawing pattern using a drift correction of the charged-particle beam based on diagnosis of the drift amount performed by the drift diagnosis control unit.