Patent ID: 7290332

Claim:
A method of constructing an interposer comprising: forming a conductive layer on a nonconductive layer, the conductive layer having via portions, non-via portions, and first and second opposing surfaces, the first surface being adjacent to the nonconductive layer; removing portions of the nonconductive layer to expose portions of the first surface of the conductive layer; forming conductive pads on the exposed portions of the first surface and the second surface of the conductive layer; removing the non-via portions of the conductive layer to form a plurality electrically separated conductors, each conductor comprising at least two conductive pads and a via portion of the conductive layer, at least partially separating the portions of the nonconductive layer directly opposite the second portions of the conductive pads on the second surface of the conductive layer from the nonconductive layer, wherein the conductive pads on the second surface of the conductive layer have first portions directly opposite the conductive pads on the first surface of the conductive layer and second portions directly opposite portions of the nonconductive layer, wherein the portions of the nonconductive layer directly opposite the second portions of the conductive pads on the second surface of the conductive layer are flexibly attached to the nonconductive layer.