Ball grid array package and method using enhanced power and ground distribution circuitry

Abstract

A structure (10) is provided that is fabricated as a ball grid array substrate that includes a substrate dielectric (14), a power ring (18), a ground ring (20), a plurality of traces, and a second metal layer (16). The substrate dielectric (14) includes a first side, a second side, and a cavity formed therein. The power ring (18), the ground ring (20), and the plurality of traces are provided on the first side of the substrate dielectric (14). The plurality of traces, for example, may include a signal connection (22), a ground connection (24), and a power connection (26). The second metal layer (16) is provided on the second side of the substrate dielectric (14) and is electrically coupled to the first side. For example, the second metal layer (16) may serve as an active ground plane and electrically couple to a variety of ground connections, such as the ground connection (24), and the ground ring (20) through vias in the substrate dielectric (14). The present invention also provides a method for forming a ball grid array package using the structure (10).

Dependencies are inferred from the claim text.