台灣為薄膜電晶體液晶顯示器 (Thin Film Transistor - Liquid Crystal Display, TFT-LCD)的重要產地,彩色濾光片(Color Filter, CF)是TFT-LCD中不可或缺的關鍵零組件。本研究以CF廠的投料與在製品控制為主題,應用系統模擬方法進行研究。面對產線在生產過程中可能因投料之問題及在製品無法有效管制,而造成產出績效不佳或成本提高之問題。本研究以CONWIP的概念進行生產規劃,在有限的生產資源及限制下提升績效,並利用AutoMod模擬軟體進行系統化的流程方法建構及分析模擬模式。藉由模擬產出的數據,計算較佳的投料及在製品控制的方式,探討其生產績效。研究結果顯示本研究發展之模式可有效提升產出量及降低在製品量與生產週期時間,並提供管理者作為決策參考之依據也可提供其他生產相關問題進行模擬分析。
Order release and Work-in-Process (WIP) control are two important issues in production management. Overly frequent order release results in both high WIP and long cycle time. Several Constant WIP (CONWIP) policies for color filter fabs are proposed to control order release and WIP level. An AutoMod simulation model is developed based on real fabs and used to evaluate the performance of these CONWIP alternatives. On the basis of experimental design, simulation results indicate that Multi-CONWIP can increase throughput and decrease both cycle time and WIP. The best CONWIP policy is then applied to real fab for performance improvement.