Patent ID: 9343268
Filing Date: 2016-05-17
CPC Classification: B82Y,H01J,H01L

Claim Text:
1. A multi charged particle beam writing method, comprising: placing a target object on a stage which is continuously movable in x and y directions; emitting charged particle beam; receiving irradiation of the charged particle beam on a region including all of a plurality of openings which are formed in the x and y directions in an aperture member to form multi-beams by making portions of the charged particle beam pass through the plurality of openings; deflecting the multi-beams by using a blanker in which a plurality of through holes are formed at a placement position of each opening of the aperture member, a part of the multi-beams, which was deflected by the blanker, being blanked; reducing a plurality of remaining beams which was not blanked, of the multi-beams by using a desired reduction rate, and irradiating with a plurality of reduced beams on the target object; and writing on a stripe of each region, surrounded by beams in 2×2 vertically and horizontally, of the target object in combination of the plurality of reduced beams having passed through different through holes among the plurality of through holes by moving the stage in the x direction continuously at a predetermined velocity and deflecting the plurality of reduced beams as a set together in a same direction to move at a predetermined velocity resulting in a diagonal advancement of the set of reduced beams on the stripe of each region being written, wherein a same region surrounded by beams in 2×2 vertically and horizontally, of the target object is written using different reduced beams of the plurality of reduced beams having passed through the different through holes among the plurality of through holes.