Patent ID: 6750451
Filing Date: 2004-06-15
Classification: H01J

Abstract:
An observation method using an electron beam, comprising:a step of mounting a specimen on a specimen stage; a step of irradiating a first area in said specimen with an electron beam and detecting a first diffraction image formed by an electron beam diffracted in said specimen by using a first detector; a step of irradiating a second area in said specimen with said electron beam and detecting a second diffraction image formed by the electron beam diffracted in said specimen by using said first detector; a step of irradiating a third area including said first and second areas with said electron beam and acquiring an enlarged image of said specimen observed simultaneously with said first diffraction image or said second diffraction image by using an electron beam passed through said specimen; a step of obtaining a characteristic value of a crystal structure in said first and second areas in said specimen on the basis of the detected information of said first and second diffraction images from said first detector; and a step of displaying said characteristic value so as to be superimposed on said enlarged image.