ISSN: 1945-7553
CODEN: JTEVAB
Published Online: 15 August 2011
Page Count: 9

An Effective Test for Supplier Selection Evaluation with Multiple Characteristics

Tai, Y. T.
Kainan Univ.,

Pearn, W. L.
National Chiao Tung Univ.,

You, S. K.
National Chiao Tung Univ.,

(Received 1 May 2011; accepted 28 June 2011)

Abstract

Recently, the extensive applications of thin-film transistor liquid crystal display (TFT-LCD) products have been increasing rapidly (for example, smart phones, monitors, and liquid crystal display televisions). Supplier selection in TFT-LCD manufacturing industries has become more essential and has received considerable attention. It is a problem of comparing two suppliers and selecting the one that has a significantly higher process capability. In this paper, we consider an effective test to determine supplier selection for glass substrate processes with multiple characteristics using the yield index SpkT, which can provide an exact measure of the process yield. In order to determine the selection decisions, critical values of the hypothesis testing for two procedures are calculated. For the practitioners’ convenience in applying our procedures, various sample sizes required for designated selection powers are tabulated and discussed. For illustration purposes, a real-world problem in TFT-LCD factories is considered and solved for supplier selection evaluation.

Keywords:
supplier selection evaluation, yield, multiple characteristics

Paper ID: JTE103937
DOI: 10.1520/JTE103937
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