Patent ID: 8822960
Filing Date: 2014-09-02
Classification: B82Y,H01J

Abstract:
1. A charged particle beam drawing apparatus that renders a pattern on a substrate using a charged particle beam, the charged particle beam drawing apparatus comprising: a detector that detects charge amount depending on irradiation of the charged particle beam; first and second deflectors that are arranged along a direction of the irradiation of the charged particle beam and are configured to deflect the charged particle beam; and a controller that controls the first and second deflectors, wherein the controller transmits a signal used for switching the irradiation to nonirradiation to the detector, and a signal used for switching the nonirradation to the irradiation to the detector to the first and second deflectors at a predetermined timing, calculates a lag time in operation start timings of the first and second deflectors based on a ratio between an output of the detector, depending on the signals and a value indicating the output of the detector in a case where no lag time exists in the operation start timings of the first and second deflectors, and adjusts the operation timing of the first and second deflectors based on the lag time.