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:
Mar. 22, 2011
Filed:
Sep. 27, 2007
Chun-hsiang Lai, Taichung, TW;
Chun-Hsiang Lai, Taichung, TW;
Macronix International Co., Ltd., Hsinchu, TW;
Abstract
An ESD protection device for a pad includes an adjusting circuit, a snapback element and a control circuit. The adjusting circuit includes a silicon controlled rectifier (SCR) coupled to the pad. The SCR includes a first diode. The snapback element is coupled to a first N pole of the first diode when a second diode is not used, and is coupled to a second N pole of the second diode when the second diode is used. The control circuit is coupled to the first N pole. In a normal operation mode, the control circuit provides a first voltage to the first N pole so that the first N pole collects a plurality of charges and the SCR is turned off. In an ESD mode, the control circuit does not provide the first voltage to the first N pole so that the first N pole does not collect the charges.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile