Patent ID: 6703850
Filing Date: 2004-03-09
Classification: G01R,G09G,H01J,H01L

Abstract:
A circuit pattern inspection method comprising:a step of scanning a board surface with a circuit pattern formed with an electron beam; a step of detecting a signal secondarily generated from said board surface by said electron beam; a step of forming an electron beam image of said board surface from said detected signal; a step of storing said electron beam image; a step of forming and storing electron beam images of areas neighboring said board; a step of comparing said electron beam images of said areas neighboring said board; and a step of deciding a failure of said circuit pattern on said board from results of said step of comparing, wherein said method identifies an item indicating the state of said circuit pattern to be inspected on an operation screen, confirms the contrast of an electron beam image corresponding to it, obtains and stores electron beam irradiation conditions including an electron beam voltage, displays said state of said circuit pattern to be inspected regarding the material or step of said circuit pattern to be inspected and the kind of failure to be detected on said operation screen, and decides and executes said electron beam irradiation conditions using said electron beam irradiation conditions stored on said displayed screen.