Patent ID: 7745846

Claim:
A lateral Schottky diode, comprising: a highly doped substrate having a first conductivity type; a semiconductor layer formed over the substrate having lower and upper surfaces; a lightly doped region of the first conductivity type formed proximate to an upper surface of the semiconductor layer; a second doped region comprising dopants of a second conductivity type formed in the semiconductor layer below the lightly doped region; an insulator layer formed over the upper surface of the semiconductor layer; a conductive anode layer formed over the insulation layer and extending through the insulation layer to form an anode contact providing a Schottky barrier at the upper surface of the semiconductor layer with the lightly doped region; and a cathode contact formed in the semiconductor layer between the lightly doped region and the substrate and laterally spaced from the anode contact along the lightly doped region, wherein the lightly doped region comprises a first lightly doped region at the anode contact and a second region of higher concentration doping according to charge balance design with the second doped region of the second conductivity type in the semiconductor layer and the anode layer over the insulator layer.