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Quality improvement and cost reduction using statistical outlier methods

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4 Author(s)

Quality improvement and cost reduction in the overall IC manufacturing and test processes are being continuously sought. Outlier screening methods can address both of these needs. As technology scales, it has become increasingly difficult to screen outliers without excessive Type I or II errors. Hundreds of parameters are collected at wafer probe, but there lacks a systematic way of selecting outlier screens. In this paper we describe a statistical approach to both identify outliers and select beneficial screening parameters more effectively. Results on a 90 nm design to reduce the burn-in fails are described.

Published in:

Computer Design, 2009. ICCD 2009. IEEE International Conference on

Date of Conference:

4-7 Oct. 2009