近年來全球的液晶顯示光電產業飛躍成長,TFT-LCD普遍的被應用在顯像產品上,如筆記型電腦、液晶監視器及液晶電視…等。由於在全球產能增加的激烈競爭環境下,許多TFT-LCD製造廠已開始運用各種不同的方案來降低產品的生產週期時間以提升快速回應市場的製造管理能力。其中在CELL製程各站之製程特性皆為多機台及換線時間長,若機台分配不均或換線次數過多時皆會影響製造流程的進行,甚至會影響整廠的產出,因此CELL製程生產排程規劃顯得格外重要。 本研究中,以某TFT-LCD製造廠之CELL製程為個案研究,以其彈性流線型生產型態來探討最適排程方式,在生產製造過程中,各種產品之工單在各製程之機台配置對於整個排程的計畫有很大影響,因此本研究探討三種不同排程方式:(1)方案ㄧ:目前個案公司之彈性流線型排程方式,(2)方案二:目前個案公司彈性流線型排程方式之其他可行方案,(3)方案三:流線型排程方式;本研究將此三種不同排程方式以最大總完工時間最小化為目標,作為方案評估之依據,運用模擬退火結合前推後擠式改善法(SA-FBI)尋求近似最佳解。實驗結果顯示方案三的總完工時間最小,但是只能同時生產一種產品;而方案ㄧ的總完工時間最大,但可同時生產多種產品。
In recent years, as Optical-Electronics Technology rapidly improves, the TFT-LCD products have been extensively used in various electronic equipments such as notebooks, computers, liquid TVs and monitors. To increase the productivity, the effective utilization of the machines in the TFT-LCD manufacturing stages is critical. The research explores a superior allocation plan for machines in each stage of the Cell manufacturing line at a company in Taiwan, using total completion time (makespan) as the performance evaluation standard. After collecting production engineers’ opinion and relevant data, three alternatives are then considered: (1) current allocation; (2) a feasible alternative allocation; (3) flow shop allocation. A set of benchmark instances are generated according to the relevant demand and manufacturing data of various products in a time span. A simulated annealing (SA) heuristic with a powerful local search scheme termed FBI (forward/backward improvement) is applied to solve the test instances. The experimental results indicate that flow shop facility layout is preferred when makespan is used for comparison.