TFT-LCD面板主要有四大製程：TFT Array Panel (TFT Array)、彩色濾光片 (Color Filter)、液晶面板組立 (LC Cell Assembly)、電路模組組立 (Module Assembly)。本研究是針對Array製程製造廠進行研究，由於TFT-LCD中的Array製程機台昂貴，因此非常重視機台的產能利用率，此外因客戶少量多樣的產品需求、且生產方面具迴流製程與機台限制等特性，亦增加了排程作業的複雜度。
案例公司的製造環境為為迴流零工式生產，本研究藉由限制理論 (Theory Of Constraints，TOC)的所發展出來的限制驅導式 (Drum-Buffer-Rope，DBR)排程法找出整個生產系統的產能受限資源(Capacity Constrained Resource)後，協助案例公司有效的運用系統中的限制資源，在縮短訂單的交期與節省排程人力成本方面有明顯的改善。

TFT-LCD panel manufacture consists of four major steps: Thin Film Transistor Array fabrication、Color Filter production、Liquid Crystal Cell Assembly, and Electronic Module Assembly. This study researches into the equipment efficiency of TFT Array process in a TFT-LCD factory. Owning to the very expensive price of equipment for the Array process, it is very important for the factory to properly schedule the productions for the customers’ orders to fully utilize the equipment. On the Other hand, small-volume large-variety customer orders and reentry process in the produce flows as well as the equipment limits and maintenances all increase the complexity of job scheduling.
This study extends the Drum-Buffer-Rope (DBR) scheduling algorithm, based on Theory Of Constraints (TOC), to find out a better schedule for the production environment of a case company, which belongs to the Reentry Job Shop Scheduling category. It first finds out the Capacity Constrained Resource (CCR) in the whole production system due to a certain amount of customer orders and, based on that, generates a better production schedules for the factory equipment. This study has successfully helped the case company to make fully usage of Capacity Constrained Resources effectively and, in the meantime, shortened the accept dates and saved man power as well.

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