The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 29, 2020

Filed:

Jun. 17, 2016
Applicant:

Infineon Technologies Americas Corp., El Segundo, CA (US);

Inventors:

Donald He, Redondo Beach, CA (US);

Niraj Ranjan, El Segundo, CA (US);

Siddharth Kiyawat, Kensington, CA (US);

Min Fang, Manhattan Beach, CA (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 27/02 (2006.01); H01L 29/872 (2006.01); H01L 29/06 (2006.01); H01L 29/47 (2006.01);
U.S. Cl.
CPC ...
H01L 27/0255 (2013.01); H01L 29/063 (2013.01); H01L 29/0619 (2013.01); H01L 29/872 (2013.01); H01L 29/8725 (2013.01);
Abstract

A Schottky diode includes a cathode terminal in a high voltage region of a semiconductor die, an anode terminal in a low voltage region of the semiconductor die, where the anode terminal and the cathode terminal are separated by a junction isolation termination situated between the high voltage region and the low voltage region. The Schottky diode includes a junction barrier Schottky diode or a trench metal-oxide-semiconductor (MOS) Schottky diode. The junction isolation termination includes pzener rings. The semiconductor die includes a substrate of a first conductivity type, an epitaxial layer of a second conductivity type situated on the substrate, a well region of the second conductivity type situated in the epitaxial layer in the high voltage region, and coupled to the cathode terminal, a Schottky barrier situated on the epitaxial layer in the low voltage region, and coupled to the anode terminal.


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