Patent ID: 9129773
Filing Date: 2015-09-08
Classification: H01J

Abstract:
1. A charged particle beam apparatus comprising: a charged particle beam source that emits a charged particle beam; a charged particle beam optical system that irradiates a sample with the charged particle beam; a platform on which the sample is placed; a stage capable of moving the platform in a parallel, tilted, and rotation manner, the stage having a tilted axis; a display unit that displays an observation image of the sample, a simulated image of the platform to represent a tilted state and an observation target portion of the platform, and a two-dimensional display of the platform; an operation input unit capable for desirably setting the tilted axis and a tilted angle on the simulated image; and a control unit for matching the tilted axis of the stage with the tilted axis of the simulation image by moving the platform in a parallel and rotation manner of the stage based on signals inputted from the operation input unit, the control unit matching a tilted angle of the stage with a tilted angle of the simulated image, the control unit executing raster rotation of the stage in a reverse direction with the rotation angle executed for matching the tilted axis of the stage with the tilted axis of the simulated image, so that only a direction of a center line of tilting of the platform is changed on the observation image without the stage actually rotating, wherein a warning is issued if a state of the stage does not match a state indicated by the simulated image of the platform.