Patent ID: 6581280
Filing Date: 2003-06-24
Classification: H01L,H05K,Y10T

Abstract:
A method of forming a capped conductive through hole in a dielectric substrate comprising the steps of:providing a dielectric substrate having opposed faces therein, said at least one through hole having two ends extending; forming at least one through hole from one face to the other face having an aspect ratio of from about 5:1 to about 30:1, and a diameter of from about 5 &mgr;m to about 125 &mgr;m; applying pressure from one end of the said at least one through hole with injecting liquid conducting material and providing a vacuum at the opposite end of said at least one through hole, thereby filling said at least on through hole with said liquid conducting material under pressure and providing a vacuum at the opposite end thereof; allowing the liquid conducting material to solidify; and forming a separate cap of conductive material over said filled hole.