摘要(英) |
Order Fill Rate (OFR) is a key factor for the build-to-order production of semiconductor companies. Unpredictable issues such as: bottleneck machines with high WIP, process abnormalities and machine failure will affect production scheduling a lot, especially to the process-end procedures. Implementing some useful management methods is essential to enterprise to achieve the success of high tool utilization, low cycle time and to meet on time delivery.
This study focus on comparing the application of dispatching rules in a testing department of GaAs wafer manufacturing. By using Arena, we construct a simplified production model to evaluate different dispatching approaches under three scenarios: (1) Non-material constrained situation (2) Tool clustering management (3) Inventory and material constrained.
The result shows Shortest Process Time (SPT) and Largest Flow Time (LFT) have better performances than other methods. Considered customers’ tolerance on delay shipment, LFT will be the most commended dispatching method. |
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