Patent ID: 7543255
Filing Date: 2009-06-02
Classification: G06F,Y02P

Abstract:
1. A computer-executed method to reduce random yield loss caused by random contamination particles, the method comprising: determining, by computer, weighted open-critical-areas for a set of wire segments; determining, by computer, weighted short-critical-areas for the set of wire segments; determining, by computer, optimization potentials for the set of wire-segments using the weighted open-critical-areas and the weighted short-critical-areas; selecting a wire segment from the set of wire-segments using the optimization potentials determining a local critical-area-ratio for the wire segment; comparing the local critical-area-ratio with a global critical-area-ratio; using the result of the comparison to determine a layout optimization which is one of: moving the wire segment or increasing the width of the wire segment; and applying the layout optimization to the wire segment to obtain an improved layout, thereby reducing random yield loss caused by random contamination particles.