Patent ID: 6613590
Filing Date: 2003-09-02
Classification: H01L,Y02P

Abstract:
A processing method for semiconductor dice on a wafer comprising:inspecting said semiconductor dice on said wafer for determining defects thereon and classifying each of said defects by size and location, said inspecting and said classifying comprising said classifying said each of said defects into one of a plurality of size range populations of defects; assigning a weight to said each of said defects representing an estimated effect of said each of said defects on die yield for said semiconductor dice; determining an estimated die yield loss (DYL) for each die of said semiconductor dice based on number and weight of said defects on said each die of said semiconductor dice, determining said estimated die yield loss (DYL) including calculating an estimated die yield loss having lower and upper limits; summing all said estimated DYL of said semiconductor dice on said wafer to obtain a wafer yield loss (WYL); subdividing the defects into said plurality of size range populations of defects of said semiconductor dice; and determining a relative contribution of each size range population of defects of said plurality of size range populations of said semiconductor dice to said WYL.