Patent ID: 9299533
Filing Date: 2016-03-29
CPC Classification: B82Y,G03F,H01J

Claim Text:
1. A multi charged particle beam writing apparatus comprising: a stage configured to mount a target object thereon and be movable continuously; an emission unit configured to emit a charged particle beam; an aperture member, in which a plurality of openings are formed, configured to form multiple beams by letting a region including a whole of the plurality of openings be irradiated by the charged particle beam and letting parts of the charged particle beam respectively pass through a corresponding opening of the plurality of openings; a plurality of first blankers configured to respectively perform blanking deflection of a corresponding beam in multiple beams having passed through the plurality of openings of the aperture member; a plurality of second blankers configured to deflect a defective beam in the multiple beams having passed through the plurality of openings of the aperture member to be in a direction orthogonal to a deflection direction of the plurality of first blankers, second blankers for openings of a same column in the plurality of openings of the aperture member, of the plurality of second blankers, being respectively configured by a pair of common electrodes, and only beams of the same column including the defective beam in the multiple beam being deflected by the corresponding pair of common electrodes; a blanking aperture member configured to block each of beams which were deflected to be in a beam off state by at least one of the plurality of first blankers and the plurality of second blankers; a detection processing unit configured to detect the defective beam in the multiple beams having passed through the plurality of openings of the aperture member; and a blanking plate on an upper surface of which the plurality of second blankers are arranged, on an under surface of which the plurality of first blankers are arranged, and in which a plurality of openings, where a corresponding beam in the multiple beams passes through a corresponding opening in the plurality of openings, are formed.