Patent ID: 7987150

Claim:
A method for generating rules for automatic sourcing of substrate microfabrication defects, comprising: displaying a wafer map, with a target defect cluster and a grid superimposed on the wafer map; receiving from a user a set of parameters for defining a set of primitive clusters, using the displayed wafer map, wherein said parameters comprise the maximum allowable distance between grid cells in the same primitive cluster, in which said grid cells contain at least one defect; selecting a geometric shape to represent said set of primitive clusters; generating a set of density shape models of said selected geometric shape for the set of primitive clusters defined by the primitive cluster parameters received from the user, the density shape models representing mathematical approximations of the defect distribution and density characteristics of the set of primitive clusters, wherein said density shape models are descriptive of said defect cluster in terms of said geometric shape's shape, size, orientation, and location on said wafer map; and receiving from a user a set of spatial parameters for said density shape model that describe the selected geometric spatial parameters of a defect target cluster associated with said shape's shape, size, orientation, and location on said wafer map, wherein said spatial parameters for said geometric shape corresponds to a known physical event that deposits or causes to form defects on a substrate in the microfabrication process.