Patent ID: 6601008
Filing Date: 2003-07-29
Classification: H01L

Abstract:
A method of tracking information associated with an integrated circuit on a substrate to the integrated circuit after the integrated circuit has been diced, the method comprising the steps of:collecting a data set of parameters from production circuitry of the integrated circuit on the substrate during a first testing process, determining a first signature for the integrated circuit on the substrate based at least in part on the data set of parameters collected from the integrated circuit on the substrate during the first testing process, associating the data set of parameters and other information with the integrated circuit on the substrate, dicing the integrated circuit on the substrate to separate the integrated circuit from the substrate, collecting anew the data set of parameters from the integrated circuit during a second testing process, determining a second signature for the integrated circuit based at least in part on the data set of parameters collected anew from the integrated circuit during the second testing process, comparing the second signature to a pool of first signatures to locate the first signature that substantially matches the second signature, and associating the other information associated with the first signature with the diced integrated circuit.