Patent ID: 9666410
Date: 2017-05-30
CPC Classifications: H01J

Claim:
1. A charged particle beam device for forming an image based on detection of charged particles obtained by scanning a sample with a charged particle beam, the device comprising: a detector configured to detect the charged particles obtained by scanning the sample with the charged particle beam; a deflector configured to deflect the charged particle beam; a stage configured to move the sample; an image processor configured to form the image based on an output of the detector; a control computer to which the image processor is coupled; and a memory storing a program causing the control computer, when executed, to: search a second image that is a search target image with use of a first template generated from an first image; and when a region corresponding to the first image is not detected in the second image, search a third image that represents a region larger than a region displayed in the second image, with use of the second image or a second template formed based on the second image, wherein the control computer controls at least one of the deflector and the stage so as to position an irradiation position of the charged particle beam to a desired position, with use of position information detected by the first template or the second template.