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Method in an integrated circuit (IC) manufacturing process for identifying and redirecting IC's mis-processed during their manufacture

  • US 6,208,947 B1
  • Filed: 03/29/2000
  • Issued: 03/27/2001
  • Est. Priority Date: 02/26/1997
  • Status: Expired due to Term
First Claim
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1. A manufacturing process for redirecting one or more integrated circuit devices that have been identified as having undergone a process flow within the manufacturing process different from the process flow of their stored data, each integrated circuit device having a substantially unique identification code, the process comprising:

  • storing data and the identification code of said each integrated circuit device of the one or more integrated circuit devices, said data indicating a process flow within the manufacturing process for each integrated circuit device of the integrated circuit devices;

    reading the identification code of each integrated circuit device of the integrated circuit devices;

    accessing the data stored and the identification code of said each integrated circuit device of the one or more integrated circuit devices;

    evaluating the data accessed for said each integrated circuit device of the one or more integrated circuit devices;

    identifying integrated circuit devices having undergone a process flow within the manufacturing process different from the process flow of their stored data; and

    redirecting said each integrated circuit device of the one or more integrated circuit devices identified as having undergone a process flow within the manufacturing process different from the process flow of their stored data.

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