Patent ID: 7205638

Claim:
A silicon building block, comprising: a piece of silicon having a first surface to electrically connect to an integrated circuit and a second surface opposite the first surface to electrically connect to a printed circuit board, wherein the piece of silicon is doped to a single polarity; a first set of vias disposed in the piece of doped silicon and through the piece of doped silicon between the first surface and the second surface, the first set of vias comprising at least one via; a second set of vias disposed in the piece of doped silicon and through the piece of doped silicon between the first surface and the second surface, the second set of vias comprising at least one via; a first material in the first set of vias, wherein the first material has an average dielectric constant greater than or equal to 100; and a second material in the second set of vias, wherein the first material is not included in the second set of vias.