Patent ID: 7631423
Filing Date: 2009-12-15
Classification: H05K,Y10T

Abstract:
1. A method for making an electrically conductive via in a multilayer printed circuit board comprising: providing a first substrate including a dielectric layer, the first substrate having a first surface; forming a first conductive circuit pattern on the first surface of the first substrate; forming a first electrically conductive via onto the first surface such that the first electrically conductive via is exposed and extends a distance above the first surface of the first substrate; forming an insulating layer and a conductive layer over the first surface of the first substrate, the first conductive circuit pattern, and the first electrically conductive via, the insulating layer positioned adjacent to the first surface, wherein the first electrically conductive via is formed prior to and independent of forming the insulating layer and the conductive layer; and planning across a partial thickness of at least one of the insulating layer or the conductive layer to expose at least one end of the first electrically conductive via, where the conductive layer and the exposed first electrically conductive via define a second surface.