Patent ID: 7633135

Claim:
A bottom-anode Schottky (BAS) diode comprising an anode electrode disposed in a semiconductor substrate near a bottom surface of said semiconductor substrate, said bottom-anode Schottky diode further comprising: a sinker dopant region disposed at a depth in said semiconductor substrate extending substantially to said anode electrode disposed near said bottom surface of said semiconductor substrate and said sinker dopant region covered by a buried Schottky barrier metal functioning as an Schottky anode; and said BAS diode further comprising a lateral cathode region extended laterally from a cathode electrode near a top surface of said semiconductor substrate opposite said Schottky barrier metal wherein said lateral cathode region doped with an opposite dopant from said sinker dopant region and interfacing said sinker dopant region whereby a current path is formed between said cathode electrode and said anode electrode through said lateral cathode region and said sinker dopant region in applying a forward bias voltage and said sinker dopant region depleting said cathode region in applying a reverse bias voltage for blocking a leakage current.