Patent ID: 7061116

Claim:
A device comprising: a substrate having a first surface and a second surface; a plurality of contact pads on the first surface adapted to electrically couple to a microelectronic package adjacent to the first surface, wherein the contact pads are substantially arranged in a grid pattern; wherein a first group of the plurality of contact pads are laterally separated from corresponding vias and a second group of the plurality of contact pads contain a corresponding via; and wherein the grid pattern contains an interior section that includes at least about half of the contact pads and is substantially free from contact pads of the first group of contact pads and a perimeter section that includes corners of the grid pattern and includes the first group of the plurality of contact pads; wherein the first group of contact pads are arranged in a triangle near each corner of the grid pattern and substantially no pads of the first group of contact pads are located outside one of the triangles.