Patent ID: 7868449

Claim:
A semiconductor substrate, comprising: a substrate layer having first and second major surfaces and a center cavity disposed in the second major surface; a circuit film deposited over the first major surface of the substrate layer, wherein the circuit film has a first surface and wherein one or more openings are formed through the first surface of the circuit film and the substrate layer at the center cavity; one or more conductive plates disposed over the first surface of the circuit film at peripheries of the openings; one or more metallic contacts formed through the first surface of the circuit film and the substrate layer; one or more conductive tracks formed on the first surface of the circuit film, wherein the conductive tracks connect the conductive plates with the metallic contacts; and an adhesive material disposed on the second major surface of the substrate layer and within the center cavity, the adhesive material for attaching a semiconductor die to the circuit film, wherein bond pads on the die are aligned with the openings for providing electrical connection of the bond pads with the conductive plates.