System and methods for parametric testing
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United States of America Patent
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Jul 15, 2014
Grant Date -
Oct 13, 2011
app pub date -
Jun 21, 2011
filing date -
Dec 22, 2008
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Abstract
Methods, systems, computer-program products and program-storage devices for determining whether or not to perform an action based at least partly on an estimated maximum test-range. One method comprises: attaining results generated from a parametric test on semiconductor devices included in a control set; selecting from the semiconductor devices at least one extreme subset including at least one of a high-scoring subset and a low-scoring subset; plotting at least results of the at least one extreme subset; fitting a plurality of curves to a plurality of subsets of the results; extending the curves to the zero-probability axis for the low-scoring subset or the one-probability axis for the high-scoring subset to define a corresponding plurality of intersection points; defining an estimated maximum test range based on at least one of the intersection points; and determining whether or not to perform an action based at least partly on the estimated maximum test range.
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