Liquid crystal polymer for flexible circuits
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United States of America Patent
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Jun 11, 2002
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N/A
app pub date -
Jul 18, 2000
filing date -
Jul 18, 2000
priority date (Note) -
Expired
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Abstract
A flexible circuit comprising a liquid crystal polymer film having through-holes and related shaped voids formed therein using an etchant composition comprising a solution in water of from about 35 wt. % to about 55 wt. % of an alkali metal salt; and from about 10 wt. % to about 35 wt. % of a solubilizer dissolved in the solution to provide the etchant composition suitable for etching the liquid crystal polymer at a temperature from about 50.degree. C. to about 120.degree. C.
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