A dynamic system regulation measure for increasing effective capacity: The X-factor theory

D. Delp, Jennie Si, Y. Hwang, Ker-Wei Pei

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations

Abstract

Due to the complex nature of semiconductor manufacturing it is evident that a single scheduling or regulation technique cannot best optimize the system dynamics for reducing cycle time and increasing throughput. The throughput of the system can increase to the effective capacity level of the system. When the throughput of the system approaches the effective capacity the product cycle time can dramatically increase. The "knee" of the performance curve indicates an operating point for fabs to maximize throughput while keeping the product cycle time relatively low. By increasing the effective capacity, i.e. adding a machine or improving a process, the product cycle time can be lowered or the system throughput increased by producing a shift in the "knee" of the performance curve. The bottleneck, typically defined as the most heavily utilized machine group, is often the target for increasing the system effective capacity. We will analyze the bottleneck along with other system capacity regulation measures to systematically study the relationship between bottleneck, X-factor, cycle time, and throughput measurements.

Original languageEnglish (US)
Title of host publicationIEEE International Symposium on Semiconductor Manufacturing Conference, Proceedings
Pages81-88
Number of pages8
StatePublished - 2003
EventThe 14th Annual IEEE/SEMI; Advanced Semiconductor Manufacturing Conference and Workshop 2003 - Munich, Germany
Duration: Mar 31 2003Apr 1 2003

Other

OtherThe 14th Annual IEEE/SEMI; Advanced Semiconductor Manufacturing Conference and Workshop 2003
CountryGermany
CityMunich
Period3/31/034/1/03

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Keywords

  • Bottleneck
  • Cycle time
  • Effective capacity
  • Gradient analysis
  • X-factor

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering

Cite this

Delp, D., Si, J., Hwang, Y., & Pei, K-W. (2003). A dynamic system regulation measure for increasing effective capacity: The X-factor theory. In IEEE International Symposium on Semiconductor Manufacturing Conference, Proceedings (pp. 81-88)