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Analysis of Local Planarization with Polishing Time, Film Thickness, Chemical Non-Uniformity, Line Density, Line Width, and Pad Relaxation Property

Published online by Cambridge University Press:  01 February 2011

Jinru Bian
Affiliation:
Rodel Inc.
John Quanci
Affiliation:
Rodel Inc.
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Abstract

Theoretical chemical mechanical polishing local planarization models as a function of polishing time and film removal are reviewed, and re-derived in a systematic and correlative way. The derived models employ pad viscoelastic and relaxation properties to explain the experimental phenomena that step height local planarization is an exponential function of line width at the same line density, and also account for the affect of pattern density and polishing of two different materials at the same time on step height planarization.

Type
Research Article
Copyright
Copyright © Materials Research Society 2002

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