Patent ID: 8766215
Filing Date: 2014-07-01
Classification: B82Y,H01J

Abstract:
1. A drawing apparatus for drawing on a substrate with a charged particle beam, the apparatus comprising: a charged particle optical system configured to emit the charged particle beam toward the substrate; a stage configured to hold the substrate and to be movable in a direction of an optical axis of the charged particle optical system and a direction perpendicular to the optical axis; an interferometer, including a reference reflecting surface, configured to measure a position of the stage in the direction of the optical axis; a measuring device configured to measure a characteristic of the charged particle beam; and a controller configured to correct measurement, obtained by the interferometer, using correction information, wherein the controller is configured to cause, with respect to each of a plurality of positions of the stage in the direction perpendicular to the optical axis, first measurement as measurement by the interferometer and second measurement as measurement by the measuring device to be performed in parallel, and to obtain the correction information based on the first measurement and the second measurement obtained with respect to each of the plurality of positions.