A Study on Monte Carlo Simulation for Key Equipment Maintenance Timing Prediction in a Semiconductor Foundry
孫嘉正、葉子明
E-mail: [email protected]
ABSTRACT
The semiconductor foundry had entered to dimension of the 12 inch, and procedures of the all process are over five hundred. In which contains the manufacture and measurement process, the manufacture procedure contains thin film, etching, diffusion, chemistry mechanistic polish, cleaning and photo. Measurement includes metal line CD (Critical Dimension) and defect inspection.
The key process must define in system of regulation regarding the key is KIP (Key Inline Parameter), and SPC controls the essential control the system regulation control. If over Spec., we must take improvement actions. Equipment is the most main factor when the process over Spec. How can let the equipment stable to produce is a good study for foundry. To establishes a system of effective maintenances, and arrangement the standard maintenance routine maintenance plan. So maintains an equipment allocation and the prediction are the two important working of product manufacture, after product system maintenance determination. According to the preventative maintenance modeling, we can guarantees the equipment properly to achieve the goal. For this research we expectation to establish a model that find the key of equipment in semiconductor foundry. Study semiconductor foundry equipment PM behavior. Use Monte Carlo Simulation to predict next PM timing. It will be able effectively to predict future of condition then will make the proper arrangements for equipment.
Keywords : Preventive Maintenance ; FMEA ; Monte Carlo Simulation Table of Contents
封面內頁 簽名頁 授權書... iii 中文摘要... iv ABSTRACT... v 誌謝... vi 目錄... vii 圖目錄... x 表目
錄... ix 第一章 緒論 1.1 研究背景與動機... 1 1.2 研究目的... 4 1.3 預 期研究貢獻... 5 1.4 研究架構... 7 第二章 文獻探討 2.1 預測的定義... 10 2.2 預測的方法... 12 2.3 模擬的應用... 15 2.4 蒙地卡羅模擬(Monte Carlo Simulation)...
18 2.4.1 蒙地卡羅模擬的歷史... 18 2.4.2 蒙地卡羅模擬夠成要素... 19 2.4.3 蒙地卡羅模擬方
法... 20 2.4.4 蒙地卡羅模擬的基礎理論架構... 21 2.4.5 蒙地卡羅模擬之應用與比較... 26 2.4.5.1 蒙 地卡羅法相關文獻... 26 2.4.5.2 蒙地卡羅法與模糊理論比較... 27 2.5 失效模式效應分析... 28 2.5.1 FMEA的功能與應用... 29 2.5.2 FMEA風險優先係數的定義... 31 2.5.3 FMEA的基本步
驟... 32 2.5.4 FMEA參考文獻整理... 34 2.6 維護預測維護時間點之文獻探討... 35 第三章 研 究方法與分析 3.1 研究方法... 37 3.1.1 定義FMEA判定關鍵設備... 38 3.1.2 運用蒙地卡羅模擬概 念建立維護預測模式... 43 3.1.3 模式分析... 45 3.2 預測說明... 48 第四章 案例驗證 4.1 資料說明... 50 4.2 運用FMEA確定關鍵設備... 51 4.3 預測結果與分析... 53 4.3.1 累積小時數結果與分析... 53 4.3.2 累積使用片數結果與分析... 59 4.3.3 累積千瓦數小時數結果與分 析... 64 4.3.4 累積膜厚數結果與分析... 70 4.3.5 累積Chamber的批量數結果與分析... 75 第五章 結論與 未來研究 5.1 結論... 81 5.2 研究貢獻... 82 5.2.1 學術上之貢獻... 82 5.2.2 實務上之貢獻... 83 5.2.3 管理上之貢獻... 84 5.3 研究限制... 84 5.4 未來 研究... 85 參考文獻... 87
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