Conformal tribocharge-reducing coating
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United States of America Patent
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Jul 3, 2007
Grant Date -
Sep 22, 2005
app pub date -
Aug 11, 2004
filing date -
Aug 11, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Tribocharging-reducing conformal coating are provided for a flexible circuit, which reduce tribocharge voltage of a coated flexible circuit to less than about 15V, preferably less than about 10 V. Coating formulations include at least about 1% of a polypyrrole. Flexible circuits having a tribocharge voltage of less than about 15V, preferably less than about a 10V comprise at least one polymeric dielectric substrate, and a conductive layer formed thereon including at least one conductive element such as a trace, bond pad and/or a lead device, and a layer of a conformal coating wherein the conformal coating comprising at least about 1% of a polypyrrole compound.
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