Patent ID: 8907267
Filing Date: 2014-12-09
Classification: H01J

Abstract:
1. A charged particle beam device comprising: a charged particle source for emitting a charged particle beam; an accelerating electrode for accelerating the charged particle beam; a deflector for scanning and deflecting the charged particle beam; an objective lens for converging the charged particle beam; a sample stage for mounting a sample thereon; a detector for detecting charged particles emitted from the sample; an electrode located at a position closer to the sample than the detector for receiving a positive or a negative voltage; and a control computer for supplying a signal to the deflector, wherein the control computer controls the voltage applied to the electrode and supplies to signal to the deflector so as to correct a scanning deflection of the charged particle beam between a first detection condition of detection of a secondary charged particle and a second detection condition of detection of a reflected charged particle.