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:
Aug. 14, 2012
Filed:
Aug. 10, 2009
Yung-chih Liang, Taipei County, TW;
Chih-ting Yeh, Miaoli County, TW;
Shih-hung Chen, Taipei County, TW;
Yung-Chih Liang, Taipei County, TW;
Chih-Ting Yeh, Miaoli County, TW;
Shih-Hung Chen, Taipei County, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
An electrostatic discharge (ESD) clamp circuit is provided. The ESD clamp circuit includes a first resistor, a second resistor, a first transistor, a second transistor, and a third transistor. A clamp device of the ESD clamp circuit is implemented by the third transistor. A parasitic capacitor of the third transistor forms a detection scheme along with the second resistor to detect the ESD. The first resistor, the second resistor, the first transistor, and the second transistor form a feedback scheme to control the third transistor for discharging the ESD current.