Patent ID: 6338001
Filing Date: 2002-01-08
Classification: H01L

Abstract:
A method of manufacturing semiconductor devices, wherein the semiconductor devices are manufactured on a wafer, wherein each wafer includes multiple die each of which may become a semiconductor device, the method comprising:(a) processing a first layer in a lot of semiconductor wafers; (b) selecting at least one inspection wafer from the lot of semiconductor wafers; (c) inspecting the first layer in the at least one inspection wafer for defects in a scan tool; (d) generating defect data per die number in the scan tool; (e) sending the defect data to a defect management system; (f) generating classification data for each defect; (g) correlating the defect classification data with kill ratio data; (h) generating a defect table for the first layer and tabulating the die number and kill ratio for each die; (i) calculating a die health statistic and a cumulative die health for the first layer for each die.