應用SDBR與緩衝管理於太陽能晶圓廠交期改善之研究

Abstract

太陽能產業，是一個新興而且市場很不穩定的產業，整個產業景氣循環不是大好即是大壞。景氣好的時候需求暢旺，產能不足交期拉長；景氣不好時以臨時性的急單居多，重視快速交期時間。本研究個案在這樣的產業環境下長期交期績效不佳，遭遇到客戶高度的不滿意。由於許多文獻皆提到導入TOC SDBR可使大部分的工廠得到很好的交期績效(高達95%以上)，釋放出更多產能，得到較短的生產前置時間。因此本研究嘗試將TOC SDBR與緩衝管理戰略戰術圖，應用於個案公司太陽能晶片的生產環境，驗證是否可以有效改善交期績效。研究結果顯示，WIP降低41.5%，生產前置時間縮短38.2%，達交率則由65.4%提升到93.3%。

Solar power industry is a new and unbalanced industry. The demand is quite strong when business is good and lead to lake of capacity and long lead time. The orders are always rush orders when economy is in a slump and short lead time is requested. In this business environment, the object of this study performed a low due-date performance for a long time and suffered from strong customer’s complaint. Many literatures indicate that implement TOC SDBR can reach high due-date performance for most of the plants (over 95), release more capacity and get shorter production lead time. In this study, we follow S&T Tree to apply SDBR and buffer management on a solar wafer plant to see if it can deliver a high due-date performance as well. The result shows a 41.5% improvement on WIP, reduce 38.2% of production lead time and improve due-date performance from 65.4% to 93.3%.