Applying queuing theory in OEE improvement at a semiconductor factory

• Main Authors: Hung-Chung Ho, 何鴻忠
• Other Authors: Tsai-Chi Kuo
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/92324967527578131241

碩士 === 中原大學 === 工業與系統工程研究所 === 102 === Abstract: The semiconductor manufacture is a capital intensive industry of high barrier for new players to enter. In 1980s and 1990s, Dynamic Random Access Memory (DRAM) manufacturers invested considerable capital and created significant revenues with high growth of personal computers (PC). However, since the severely competition of ICT products and the change of the business model, the demand of DRAM sometime rises quickly and sometime drops immediately. The demand of DRAM for ICT product nowadays are not as stable and predictable as that for PC in 1980s and 1990s. The unpredictable demand of DRAM makes manufacturers hesitate to invest building new production lines or foundries so that the imbalance between supply and demand occurs repeatedly in the DRAM market. Therefore, the DRAM manufacturers keep the advantage position at the least capital expanse by increasing the Overall Equipment Effectiveness (OEE) of the existing equipments. The paper proposes innovative regulations to coordinate departments and manager levels and guide the employees to propose methodologies to increase the productivity and reduce the cost by improving the OEE. The methodologies includes setting up OEE improvement programs, planning the schedules of the OEE improvement programs, introducing approaches to improve OEE, and building evaluation quantification measurements. The methodologies are applied and verified in a case company of the semiconductor manufacturers in Taiwan. The know ledges to apply and verify the method are not only benchmarks for OEE improvement when adapting new process or technologies, but also examples or reference of other projects.