Patent ID: 6365425
Filing Date: 2002-04-02
Classification: G01N

Abstract:
A method of manufacturing semiconductor device comprising processes for:fetching inspection chip information as the information including dust-particle/fault on said inspection chip by irradiating said inspection chip of a semiconductor wafer supported with a movable stage with an optical beam and by detecting the scattering/diffracting beam of said optical beam; fetching reference chip information as the information of said reference chip by irradiating said reference chip, with said optical beam, which is estimated as not including dust-particle/fault of said semiconductor wafer; obtaining dust-particle/fault information as the information about position and size of said dust-particle/fault on said inspection chip by comparing said inspection chip information with said reference chip information; determining whether said dust-particle/fault is located on the pattern or in the outside of pattern by matching between said dust-particle/fault information and the design pattern data as the data of the prepared pattern; and defining said dust-particle/fault as the fatal dust-particle/fault when said dust-particle/fault is located on the pattern or as the non-fatal dust-particle/fault when said dust-particle/fault is located in the outside the pattern.