Liquid crystal polymer for flexible circuits

摘要

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° C. to about 120° C.