設備總合效率衡量指標之比較與應用-以薄膜電晶體液晶顯示器JI製程為例

The Indices of Overall Equipment Efficiency and their Applications -A Case Study of JI Process in TFT-LCD Manufacturing

蔣仕隆(SHIH-LONG JIANG)

指導教授 ： 孫德修 ； 鄭純媛

朝陽科技大學/理工學院/工業工程與管理系/碩士(2018年)

摘要

現今的產業處在一個持續變動的環境中，許多企業透過推動全面生產管理(Total Productive Management, TPM)制度來提升競爭力及高生產力。TPM衡量設備效率最常使用的指標是設備總合效率(Overall Equipment Effectiveness, OEE)指標，另有學者發展出設備總合權重效率(Overall Weighted Equipment Effectiveness, OWEE)指標、設備總合成本損失(Overall Equipment Cost Loss, OECL)指標以及設備與品質總合成本損失(Overall Equipment and Quality Cost Loss, OEQCL)指標，以改良OEE指標的缺點。
本論文首先比較四種設備總合效率指標在定義上的異同，然後以個案公司設備資料為範例，計算出各個設備總合效率指標值，進行比較各個不同的設備總合效率指標的優先改善排序，並歸納出各指標的適用條件。最後，以個案公司之資料為基礎，模擬並分析比較不同的時間損失程度與不同的單位成本對四種設備總合效率指標之影響。
本研究發現對 OEE與OWEE指標影響最大的因子為品質損失，依序為性能損失時間、停機損失時間；對 OECL及 OEQCL指標影響最大的因子亦為品質損失，依序為性能損失時間、停機損失時間、間接成本、直接人工成本。
本研究所獲得成果不僅可提供個案公司選用合適的設備績效指標的參考，更提供個案公司在改善設備績效時，可針對影響較大的因子優先進行改善，找出有效的改善對策。

關鍵字

實驗設計 ； 敏感度分析 ； 設備總合效率

並列摘要

In a continuously changing environment, many companies promote Total Productive Management (TPM) system to increase their competitiveness and productivity. The most popular index of measuring equipment performance for TPM is the overall equipment effectiveness (OEE). Other indices of measuring equipment performance, such as overall weighted equipment effectiveness (OWEE), overall equipment cost loss (OECL), and overall equipment and quality cost loss (OEQCL), are developed to improve the shortages of OEE.
In this research, first, the four indices of measuring equipment performance (OEE, OWEE, OECL, and OEQCL) are compared. Second, the four indices of equipment performance are calculated and compared, and then the improvement order is prioritized for a case company. Finally, based on the data provided by the case company, a simulation is performed to study the influence of factors of time loss and cost loss to the four indices of equipment performance.
This study found that the most important factor which affects OEE and OWEE is the time loss caused by quality issue; for OECL and OEQCL, the most important factor is the quality cost loss.
Results obtained from the research can provide the case company a guideline in selecting suitable index of equipment performance. Moreover, the case company can focus on the most important factor found in this research to improve the equipment performance.

並列關鍵字

Experimental Design ； Analysis of Variance ； Overall equipment effectiveness

參考文獻

1. De Ron, A. J., and Rooda, J. E.. “Equipment effectiveness: OEE revisited.” IEEE Transactions on Semiconductor Manufacturing 18.1: 190-196 (2005).

2. De Ron, A. J., and Rooda, J. E. “OEE and equipment effectiveness: an evaluation." International Journal of Production Research 44.23: 4987-5003 (2006).

3. Huang, S. H., Dismukes, J. P., Shi, J., Su, Ql., Razzak, M. A., Bodhale, R and Robinson, D. E.. “Manufacturing productivity improvement using effectiveness metrics and simulation analysis.” International Journal of Production Research 41.3: 513-527 (2003).

4. Kwon, O., and Lee, H.. “Calculation methodology for contributive managerial effect by OEE as a result of TPM activities.”Journal of quality in Maintenance Engineering 10.4: 263-272 (2004).

5. Muchiri, P., and Pintelon, L.. “Performance measurement using overall equipment effectiveness (OEE): literature review and practical application discussion.” International Journal of Production Research 46.13: 3517-3535 (2008).