Patent ID: 9514915
Filing Date: 2016-12-06
CPC Classification: H01J

Claim Text:
1. A method for evaluating a charged particle beam drawing apparatus which performs drawing by deflecting a charged particle beam with a deflector disposed on an optical path for the charged particle beam, the method comprising: making a shot of a first pattern; controlling an amount of deflection by the deflector to move an applied position of the charged particle beam from the first pattern along a first direction, and making a shot of a second pattern; controlling the amount of deflection by the deflector to move the applied position of the charged particle beam from the second pattern along the first direction, and making a shot of a third pattern; controlling the amount of deflection by the deflector to move the applied position of the charged particle beam from the third pattern along a second direction opposite to the first direction, and making a shot of a fourth pattern between the second pattern and the third pattern; measuring positions of the second pattern and the fourth pattern and calculating an interval between the second pattern and the fourth pattern; and comparing the calculated interval to a reference interval.