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:
Jan. 14, 2020
Filed:
May. 09, 2016
Applicant:
Mediatek Inc., Hsin-Chu, TW;
Inventors:
Yu-Jen Chen, Kaohsiung, TW;
Chien-Hui Chuang, New Taipei, TW;
Assignee:
MEDIATEK INC., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 27/02 (2006.01); H01L 27/092 (2006.01); H01L 27/06 (2006.01); H02H 9/04 (2006.01);
U.S. Cl.
CPC ...
H01L 27/0248 (2013.01); H01L 27/0629 (2013.01); H01L 27/092 (2013.01); H02H 9/046 (2013.01);
Abstract
The invention provides an ESD (Electrostatic Discharge) protection circuit including a clamp circuit, a switch element, and a detection circuit. The clamp circuit is coupled between an ESD bus and a ground node. The switch element is coupled between a supply node and the ESD bus. The detection circuit is configured to detect whether an ESD event occurs. When no ESD event occurs, the detection circuit closes the switch element, such that the ESD bus is coupled to the supply node. When the ESD event occurs, the detection circuit opens the switch element, such that the ESD bus is decoupled from the supply node.