Patent ID: 6693288
Filing Date: 2004-02-17
Classification: H01J

Abstract:
A charged particle beam irradiation apparatus comprising:a specimen stage for holding a specimen; a detector for detecting an amount of movement of said specimen stage; a charged particle beam optical unit for irradiating said specimen with a charge particle beam; an image display unit for displaying an image of said specimen and a marker on each target position on said image of said specimen, said image being formed by using charged particles or electromagnetic waves emitted from said specimen irradiated with said charged particle beam and said marker being attached as a sign post to the target position of said image of said specimen by using an input means; wherein, when said specimen stage is moved, said target position on said image of said specimen, on which each marker is to be displayed, is also moved based on both said target position of each marker, which has been calculated, and the amount of movement of said specimen stage, on said amount of displacement being detected by said detector.