Patent ID: 7399964
Filing Date: 2008-07-15
Classification: G01N,H01J

Abstract:
1. An electron microscope system comprising: a scanning electron microscope unit including: an electron beam irradiating optical system which irradiates focused primary electron beam so as to scan to two-dimensions on a sample; an electron image acquisition unit which acquires an electron image of the sample by detecting secondary electron and/or reflected electron that is generated from the sample irradiated the focused primary electron beam by said electron beam irradiating optical system; an arithmetic operator processing unit which compensating the electron image of the sample acquired by the electron image acquisition unit; and a processing unit which measures dimension of a pattern formed on the sample, by processing the electron image acquired by said electron image acquisition unit and compensated by the arithmetic operator processing unit; and a data station which controls the arithmetic operator processing unit of the scanning electron microscope; wherein, said data station further comprises: a resolution detection unit which detects a difference between a resolution of an electron image of a reference sample pattern acquired by said electron image acquisition unit and a resolution of an electron image of the reference sample pattern acquired by another scanning electron microscope; an arithmetic operator generation unit which generates an arithmetic operator to be applied for an electron image of a sample acquired by said scanning electron microscope unit for compensating the difference in resolution detected by said resolution detection unit; and an output unit which outputs the arithmetic operator generated by the arithmetic operator generating unit to the arithmetic operator processing unit of the scanning electron microscope unit; wherein said arithmetic operator processing unit of the scanning electron microscope unit processes the electron image of the sample so as to compensate the difference in resolution from an electron image of the sample acquired by said another scanning electron microscope by using the arithmetic operator output from the output unit of said data station.