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Method of increasing reliability of packaged semiconductor integrated circuit dice

  • US 7,105,364 B2
  • Filed: 09/14/2004
  • Issued: 09/12/2006
  • Est. Priority Date: 09/14/2004
  • Status: Active Grant
First Claim
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1. A method to increase a reliability of packaged semiconductor integrated circuit dice, the method comprising:

  • identifying a die cluster, the die cluster consisting of dice having failed an electrical test;

    identifying a core die from the die cluster;

    adding the core die from the die cluster to a weighted character map;

    adding at least one additional die from the die cluster to a weighted character map;

    assigning a weighting value to each of the dice added to the weighted character map;

    adding at least one tier of buffer dice to the weighted character map adjacent to each die on the weighted character map; and

    indicating dice from the die cluster and tier of buffer dice, thereby indicating dice not requiring packaging.

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