Patent ID: 6541771
Filing Date: 2003-04-01
Classification: H01J

Abstract:
A scanning electron microscope comprising:a cathode; a condensing lens for focusing an electron beam emitted from said cathode; a scanning deflector for scanning a specimen with said electron beam; a detector for detecting electrons emitted from said specimen by the electron beam scanning; a storage unit for storing coordinate information as a plurality of points represented by a stored coordinate map, enlarged images and/or a beam condition data adjusting the electron beam per points on said map; a display unit for displaying an image of said specimen on the basis of electronic signals obtained by said detector; means for displaying a pointer indicative of a portion observed with a magnification larger than said image of the specimen by superimposing said pointer on said image of the specimen displayed on said display unit; a control unit for designating the pointer on said display unit so as to provide one of the enlarged images of the designated pointer on said display unit; a specimen stage for moving said specimen; and means for moving said pointer displayed on said display unit in accordance with the move of said specimen stage.