Patent ID: 8486250

Claim:
A method comprising providing a substrate having a surface; providing a plurality of elongated electrical conductors each having a first end and a second end; bonding each of said first ends to said surface so that said second ends are disposed away from said surface; electrochemically forming a dielectric coating on a portion of said elongated electrical conductors, comprising providing a liquid composition containing a cured polyimide in its reduced form and a member selected from the group consisting of electrolyte, reducing agent and mixtures thereof, and wherein the reducing agent has an oxidation potential that is negative with respect to the reduction potential of the polyimide, immersing said portion of said elongated electrical conductors in the composition, providing a counter electrode in the composition; and providing an electrical bias between the elongated electrical conductors and the counter electrode to thereby deposit the polyimide onto the elongated electrical conductors and form said dielectric coating; there being an exposed portion of said elongated electrical conductor at said second end that is not coated with said dielectric coating.