Patent ID: 7002187

Claim:
A method for providing an integrated Schottky diode comprising: (a) providing a substrate region; (b) providing epitaxial (EPI) layer on the substrate region; (c) providing a plurality of guard rings in the EPI layer; (d) providing a plurality of slots in a substrate region that is in contact with the EPI layer in the substrate region; (e) oxidizing the plurality of slots; and (f) providing a plurality of metals within the plurality of slots to form a buried power buss, wherein a portion of the plurality of metals is completely oxide isolated from the other elements of the diode, wherein the plurality of metals comprises three deposited metals, wherein first and second metal depositions fill the plurality of slots followed by a deposited dielectric, wherein the deposited dielectric has contacts opened above the plurality of slots and a third deposited metal provides an interconnect layer wherein a third metal forms the interconnecting metal to circuit elements and a second deposited metal, and is oxide isolated from a remaining portion of Schottky diode, wherein the integrated Schottky diode has a high reverse voltage, low forward drop, low leakage and of limited capacitance.