Patent ID: 7627947
Filing Date: 2009-12-08
Classification: H05K,Y10T

Abstract:
1. A method of making a multilayered circuitized substrate, said method comprising: forming first and second conductive layers using a continuous process including forming first and second pluralities of openings within said first and second conductive layers, respectively; forming first and second sub-composite substrates simultaneously including said first and second conductive layers having equal thickness, respectively, and at least one dielectric layer bonded to each of said first and second conductive layers, respectively, said dielectric layers not including continuous or semi-continuous glass fibers as part thereof; aligning said first and second sub-composites relative to one another such that said first and second pluralities of openings within said first and second conductive layers align relative to one another; bonding said first and second sub-composites together to form a multilayered substrate; laser drilling a plurality of holes through the entire thickness of said multilayered substrate, including through said aligned first and second pluralities of openings within said first and second conductive layers of said first and second sub-composites, respectively; and providing electrically conductive material within said plurality of holes so as to form electrically conductive thru holes through said entire thickness of said multilayered substrate, said multilayered substrate including said first and second conductive layers and said electrically conductive thru holes forming a circuitized substrate.