Simulation study for a proposed segmented automated material handling system design for 300-mm semiconductor fabs

Chiung Hsi Hsieh, Chiwoon Cho, Ta-Ho Yang, Ting Jiun Chang

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

With the increase in the size and weight of 300-mm wafers, the factory area must be enlarged accordingly. Due to the flow of material over long distances, the elimination of manual wafer handling has become necessary. Consequently, an automated material handling system (AMHS) is required for 300-mm semiconductor manufacturing facilities. The design of an AMHS must not only be capable of meeting numerous complex material handling requirements, but it must also simplify control and reduce capacity loss. In this study, a segmented dual-track bidirectional loop (SDTBL) design for an AMHS is proposed. The configuration is based on a double-loop flow path structure that is divided into non-overlapping segments, each containing a certain number of vehicles operating in bidirectional mode. A transfer buffer is set to enable conversion between segments and connect each independent zone. This structure eliminates congestion and blocking without requiring additional investment by operating vehicles on mutually exclusive tracks. The segmentation strategies and steps for two scenarios are developed in this research, and a simulation is performed to evaluate the performance of each segmented strategy. The simulation results show that the proposed strategies can reduce the cycle time and increase stocker utilization by up to 55.55% and 39.39%, respectively, while the throughput remains the same. The proposed design has great potential for practical application.

Original languageEnglish
Pages (from-to)18-31
Number of pages14
JournalSimulation Modelling Practice and Theory
Volume29
DOIs
Publication statusPublished - 2012 Dec 1

Fingerprint

Materials Handling
Materials handling
System Design
Semiconductors
Systems analysis
Simulation Study
Semiconductor materials
Wafer
Mutually exclusive
Semiconductor Manufacturing
Congestion
Industrial plants
Elimination
Buffer
Simplify
Simulation
Throughput
Eliminate
Segmentation
Scenarios

All Science Journal Classification (ASJC) codes

  • Software
  • Modelling and Simulation
  • Hardware and Architecture

Cite this

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Simulation study for a proposed segmented automated material handling system design for 300-mm semiconductor fabs. / Hsieh, Chiung Hsi; Cho, Chiwoon; Yang, Ta-Ho; Chang, Ting Jiun.

In: Simulation Modelling Practice and Theory, Vol. 29, 01.12.2012, p. 18-31.

Research output: Contribution to journalArticle

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