"Product quality and manufacturing cost are crucial to winning for TFT-LCD manufacturers facing a very competitive
global market due to prosperous development of information technology. TFT-LCD panel manufacturers therefore are
going all out in the pursuit of continuous cost reduction and upgraded product quality. Many of them have introduced in the
6 sigma management methodology that creates high profitability in the hope to upgrade product quality and yield so to
further reduce wastes of cost and nonconformities. Whereas manufacturers are not necessarily aware of the key quality
process to be improved in the promotion of the 6 sigma methodology, this study attempts to analyze the Characteristic of
critical-to-quality (CTQ) of the TFT-LCD panel manufacturing process and to locate the critical process on top priority
pending improvement for serving an entry using the Multi-Characteristic Product Capability Analysis Chart (MPCAC).
Therefore, improvement efficiency and chance of success in promotion of the 6 sigma method will be increased for
TFT-LCD panel manufacturers making the best out of the methodology recommended by the study."