Patent ID: 7327043
Filing Date: 2008-02-05
Classification: H01L

Abstract:
1. A routing pattern for high speed signals for a package substrate, the routing pattern comprising: electrically conductive bond fingers on a first surface of the package substrate, where the first surface is adapted to receive an integrated circuit in an attachment zone, the bond fingers disposed in at least two substantially concentric rings around the attachment zone, the bond fingers of an innermost ring of bond fingers all routed to electrically conductive first traces disposed on a first layer of the package substrate, the bond fingers other than those on the innermost ring of bond fingers all routed to electrically conductive second traces disposed on a second layer of the package substrate that is a separate layer from the first layer of the package substrate, the package substrate having electrically conductive traces on only the first layer and the second layer, and electrically conductive contacts disposed on a second surface of the package substrate that substantially opposes the first surface, the first traces all routed to a first set of the contacts that are all disposed within an innermost portion of the second surface, and the second traces all routed to a second set of the contacts that are all disposed within an outermost portion of the second surface.