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Effect of Particle Size Distribution on Filter Lifetime in Three Slurry Pump Systems

Published online by Cambridge University Press:  01 February 2011

Mark R. Litchy
Affiliation:
CT Associates, Inc., 10777 Hampshire Avenue South Bloomington, MN 55438U.S.A.
Reto Schoeb
Affiliation:
Levitronix GmbH, Technoparkstrasse 1 CH-8005 Zurich, Switzerland
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Abstract

Delivery systems are often used to supply the slurry used to planarize wafers during semiconductor chip manufacturing. These systems pressurize the slurry to deliver it to the tools and circulate it to help keep the particles in suspension. Pressurization and circulation are accomplished by various means including a variety of pumps and pressure-vacuum technology. Typically, slurry passes through a distribution system approximately 100 times before it is used to polish wafers[1].

Type
Research Article
Copyright
Copyright © Materials Research Society 2005

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References

1. Kvalheim, J., (personnel communication), BOC Edwards, Chanhassen, MN, March 2003.Google Scholar
2. Litchy, M. and Schoeb, R., Semiconductor International 27 (12), 8790 (2004).Google Scholar
3. Lin, Z., Vasilopoulos, G., Devriendt, K., and Meuris, M., presented at SEMICON West 99 Technical Program, July, 1999.Google Scholar