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.
Patent No.:
Date of Patent:
Oct. 04, 2011
Filed:
Mar. 26, 2009
Applicant:
Kouichi Sawahata, Kanagawa, JP;
Inventor:
Kouichi Sawahata, Kanagawa, JP;
Assignee:
Renesas Electronics Corporation, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
A protection circuit according to an embodiment of the present invention is provided between a first terminal and a second terminal and includes: a capacitor element having one end connected to the second terminal; and a multi-cathode thyristor formed on a semiconductor substrate, and including an anode connected to the first terminal, a first cathode connected to the second terminal, and a second cathode disposed between the anode and the first cathode and connected to another terminal of the capacitor element.