- 學位論文
晶圓測試廠維護策略對生產績效影響之研究
The Impact of the Maintenance Policy to Production Performance in Semiconductor Testing Houses
摘要
半導體晶圓測試廠設備機台非常昂貴，每台費用大致從數千萬到數億元之間不等。設備充份之利用對測試產業將是一非常重要的課題。每當晶圓測試廠發生機台當機、預防保養與更換事件時，將會造成維修費用的增加，設備的閒置使用率降低，機台壽命減短及產品不良損失等情況，進而造成對客戶交貨設定時間延遲之商譽影響。 整個晶圓測試廠，針對預防維護作業中較無探討分別運用TBM ( Time Based Maintenance) 與CBM(Condition Based Maintenance)策略下對整合生產與維護系統之效益之影響為何。TBM與CBM兩種維護策略下所造成每次維護的時間點皆不同，將對測試產品製造過程的時間點也將會不同，進而影響到各產品的生產週期時間及訂單的達交率。同時在整合生產與維護中也未探討到TBM、CBM方式、機台維護優先順序及維護人力配置情況下之維護組合策略下對系統績效影響，也是先前研究者較無探討的部份。因此本研究將考量TBM與CBM維護方式、維護派工及維護人員配置等三種組合變數下來建構晶圓測試廠生產與維護績效評估系統，可使公司生產與維護目標盡量強化，並增加該企業之競爭優勢。 研究結果顯示，本研究運用TBM與 CBM方法於生產與維護管理績效系統的模式，可有效模擬企業生產與維護安排之情況，預先瞭解各種維護組合策略下之較佳生產與維護之績效值，並可提供管理者事先安排生產與維護工作之參考依據。 例如針對維護人員平均使用效率中以目前該公司之狀況應選擇第四組組合策略(灰色系統,SMT,全能工)為68.56％為最佳。而本研究運用系統模擬的方法將可得知設備機台維護之標準人力應為6人與案例公司目前之人力為8人將有2人之差距，因此若運用本研究之方法將可節省該公司每年人力為2人之費用為100.8萬元(3.6萬＊14(月)＊2人=100.8萬元)。
並列摘要
Testing tools used by semiconductor foundries are very expensive, the cost in each ranges from tens of millions to hundreds of millions. Optimal use of the equipment for the test industry will be a very important topic. When testing tools used for testing in semiconductor foundries crash, or when preventive maintenance and parts replacements are required, the maintenance cost redundant, lowering of the machine usage rates, reduced lifespan, and losses due to product defects may occur as a result. This may further delay shipment of the product to the customer and have productive effects on the business reputation. There has not been much in-depth discussion of preventive maintenance in Ic Testing house , especially the performance of Time Based Maintenance (TBM) and Condition Based Maintenance (CBM) strategies on the production and maintenance systems. The difference between TBM and CBM strategies causes different maintenance times, resulting in different product manufacturing overall cycle times; further affecting the product production lifecycles and order fulfillment rates. Also, TBM and CBM methods, order in which machine tools are maintained, human resource distribution, and other maintenance strategy issues are not investigated during integrated product manufacturing and maintenance for effects in system performance; it is also a topic not fully investigated. Therefore, this research evaluated the TBM and CBM methods, maintenance work displacement, and assignment of maintenance personnel. With these three factors, a semiconductor foundry production and maintenance effectiveness performance system is established to enable strengthening of a company’s production and maintenance goals while increasing the competitiveness of the business. For example, based on the average usage rates by maintenance personnel, the company should select the fourth strategic combination (grey system, SMT, fully rounded personnel) with 68.56% as the must optimal selection. This research applies the system simulation method to learn that the standard human resource for machine tools should be 6 personnel, 2 personnel less than the 8 personnel used by the company used by this case study. So by apply this case study method, 2 personnel can be reduced, resulting in a savings of 1.008 million dollars (36 thousand * 14 (months) * 2 personnel = 1.008 million dollars).