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Data analysis method for integrated circuit process and semiconductor process

  • US 7,386,420 B2
  • Filed: 06/02/2006
  • Issued: 06/10/2008
  • Est. Priority Date: 06/02/2006
  • Status: Active Grant
First Claim
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1. A data analysis method for an IC process, used to analyze results of at least an in-line quality test, a product test and a yield test conducted to a plurality of products of the IC process, comprising:

  • dividing the products into a normal group and an abnormal group based on the result of the in-line quality test;

    dividing the products into a qualified group and an unqualified group based on the result of the yield test; and

    conducting a categorization step to define an intersection of the unqualified group and the normal group as a first problematic group and to define an intersection of the unqualified group and the abnormal group as a second problematic group.

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