A multi-step supervisory control strategy for semiconductor device manufacturing

Christopher A. HARRISON*, Richard GOOD, Daniel KADOSH, S. Joe QIN

*Corresponding author for this work

Research output: Book Chapters | Papers in Conference ProceedingsConference paper (refereed)Referred Conference Paperpeer-review

2 Citations (Scopus)

Abstract

The goal of this paper is to develop a multi-step optimization framework for a semiconductor manufacturing process. A simple physics model of a flash memory cell is presented to demonstrate the idea, and a multi-step supervisory control strategy is simulated on a flash memory cell manufacturing process based on this model. The multi-step supervisory control strategy performs multiple optimizations of target inputs for a lot with newly available metrology after each step in the course of its processing. The proposed strategy is shown to confer a significant improvement in the control of product quality over a supervisory control strategy which uses a one-time optimization and an open loop implementation. This improvement is primarily due to the ability of the multi-step optimizer to compensate for the effect of error introduced at earlier steps using end-of-step metrology.
Original languageEnglish
Title of host publication2004 43rd IEEE Conference on Decision and Control (CDC)
PublisherInstitute of Electrical and Electronics Engineers
Pages4237-4242
Number of pages6
ISBN (Print)0780386825
DOIs
Publication statusPublished - Dec 2004
Externally publishedYes
Event43rd IEEE Conference on Decision and Control (CDC) - Nassau, Bahamas
Duration: 14 Dec 200417 Dec 2004

Publication series

NameProceedings of the IEEE Conference on Decision and Control
PublisherInstitute of Electrical and Electronics Engineers
ISSN (Print)0743-1546
ISSN (Electronic)2576-2370

Conference

Conference43rd IEEE Conference on Decision and Control (CDC)
Country/TerritoryBahamas
CityNassau
Period14/12/0417/12/04

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