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11th Edition: A Novel Dual-Damascene ETCH Process Utilising a High-Selectivity, Ultralow-k |
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Feb 03, 2005 at 04:02 PM |
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TOM ROSENMAYER, JOHN BARTZ, SHICHUN QU & PING XU, W. L. Gore & Associates, Inc., Eau Claire, WI, USA ABSTRACT
This
article describes a potential dual-damascene etch process for an
ultralow-k dielectric consisting of a nanocomposite of
polytetrafluoroethylene (PTFE) and siloxane. PTFE has a high etch
selectivity relative to common process materials. Trials of an
integration scheme using this type of dielectric are described.
A Novel Dual-Damascene ETCH Process Utilising a High-Selectivity, Ultralow-k Dielectric
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