A combined shop flow control method for the wafer fabrication factories

Sheng Hung Chang*, Kelvin Chang, Rong-Kwei Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The basic concept we presented herein is one should focus on those global performances (throughput, cycle time and WIP level) instead of machines' utilization. In the other word, the machines' utilization is not decided by its' cost but decided by demands. Therefore, in this paper, we introduce an integrated scheduling method based on Theory of Constraints. The order releasing method and dispatching rules are considered in this method simultaneous so that the global performances can be achieved. Simulation experiments show that the capacity constraint resource is fully utilized. The control mechanisms, which include order releasing and dispatching rules, are compared with other control mechanisms on semiconductor wafer fab with favorable results.

Original languageEnglish
Pages (from-to)59-72
Number of pages14
JournalKung Yeh Kung Chieng Hsueh K'an/Journal of the Chinese Institute of Industrial Engineers
Issue number4
StatePublished - 1 Jan 2001


  • Bottleneck machine
  • Dispatching rule
  • Order release
  • Theory of constraints
  • Wafer fabrication

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