Patent ID: 7956324
Filing Date: 2011-06-07
Classification: G01N,H01J

Abstract:
1. A charged particle beam apparatus comprising: a specimen chamber configured to have a specimen stage for holding a specimen to be measured provided therein; and a charged particle optical column configured to scan the specimen to be measured with a charged particle beam, and to detect and output secondary signals generated by scanning, wherein the charged particle optical column includes: a scan deflector configured to scan a surface of the specimen to be measured with the charged particle beam in an arbitrary direction; an arithmetic unit configured to acquire pixel signal data from the secondary signals generated by a radiation of the charged particle beam by the scan deflector; an image formation storage unit configured to store the pixel signal data; and an image display unit configured to display a specimen image formed by extracting a portion of the pixel signal data from the image formation storage unit, wherein the arithmetic unit is configured to control a scan direction of the charged particle beam to be inclined with respect to a direction in which the specimen image is extracted from the image formation storage unit, and is configured to control a size of a trimming area of the specimen image with respect to a scan area of the charged particle beam.