Patent ID: 8283771

Claim:
An apparatus comprising: a first die coupled to a second die; and vias disposed through the second die to provide power references to the first die, the vias being positioned along a first axis without overlapping circuit sections in the second die, wherein the vias are disposed along lines in a direction of the first axis, the lines being parallel to and between two or more tracks having the circuit sections in the second die, and wherein the vias being on either side of the two or more tracks, wherein the second die has at least first, second, and third metal line layers, the first metal line layer being closer to circuitry in the second die, followed by the second and third metal line layers, and wherein the first metal line layer is used to provide contact pads for the vias, the second layer is used to couple like vias together, and the third layer is used to interconnect portions of circuit sections within the second die with one another.