Patent ID: 8260034
Filing Date: 2012-09-04
Classification: G01N,G06F,G06K,G06T

Abstract:
1. A method for identifying one or more defects in a wafer produced by a photolithography process, the method comprising steps of: obtaining tool trace parameter data generated as a result of production of the wafer in accordance with a photolithography tool, wherein at least a portion of the tool trace parameter data comprises data representing an existence of a pressure differential in a measured back side pressure of the wafer; obtaining after development inspection (ADI) image data generated as a result of inspection of the wafer; analyzing the tool trace parameter data such that image processing analysis of the ADI image data to detect one or more hot spots on the wafer is performed at a high resolution only in regions of the wafer that exhibit a given pressure differential; and identifying one or more defects in the wafer at the one or more detected hot spots.