Patent ID: 7009178
Filing Date: 2006-03-07
Classification: H01J

Abstract:
1. A scanning electron microscope comprising: a stage which can move a specimen; and a control device which moves said specimen to a second coordinate which is obtained by correcting a first coordinate value of an object on said specimen, wherein said first coordinate value is obtained by another device before an inspection by the scanning electron microscope, with a coordinate correcting expression; wherein said control device calculates a vector showing direction and distance between said second coordinate and a third coordinate at which the object was observed by the scanning electron microscope, and said object is a foreign object or defect on the specimen and said scanning electron microscope further comprises a function which automatically determines a magnification to automatically move said stage according to said coordinate correcting expression and detects said foreign object or defect according to their size and an accuracy of correction by said coordinate correcting expression, based on the vector, the size of the largest foreign object or defect, and the length of one side of a screen of a display displaying the object or defect on said specimen.