Patent ID: 6618850
Filing Date: 2003-09-09
Classification: G01N,G01R,G06T,H01J

Abstract:
An inspection method using charged particle beam, comprising:a step of scanning a region on a surface of a wafer in which an electric resistance value of a circuit pattern has dependency on voltage with a primary charged particle beam; a step of detecting signals of secondary electrons and back scattered electrons generated from said region which is irradiated with said primary charged particle beam; a step of forming an image of said region from the detected signals of said secondary electrons and back scattered electrons; and a step of analyzing a contrast of said image in the region irradiated with said primary charged particle beam on the basis of parameters of irradiating said primary charged particle beam and parameters of detecting secondary electrons and back scattering electrons, and determining absolute values of an electric resistance and an electric capacitance of said region.