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:
Jul. 12, 2022
Filed:
Sep. 11, 2019
Vanguard International Semiconductor Corporation, Hsinchu, TW;
Shao-Chang Huang, Hsinchu, TW;
Li-Fan Chen, Hsinchu, TW;
Ching-Ho Li, Hsinchu, TW;
Ting-You Lin, Hsinchu, TW;
Chun-Chih Chen, New Taipei, TW;
Kai-Chieh Hsu, Taoyuan, TW;
Chih-Hsuan Lin, Hsinchu, TW;
Yu-Kai Wang, Hsinchu, TW;
Vanguard International Semiconductor Corporation, Hsinchu, TW;
Abstract
An operating circuit is provided. A first N-type transistor determines whether to create an open circuit between a core circuit and a ground terminal according to the voltage level of a specific node. An electrostatic discharge (ESD) protection circuit is coupled between an input/output pad and the core circuit to prevent an ESD current from passing through the core circuit. The ESD protection circuit includes a detection circuit and a releasing element. The detection circuit determines whether there is an ESD event at the input/output pad and generates a first detection signal according to the detection of the ESD event at the input/output pad. The releasing element provides a release path according to the first detection signal to release the ESD current. A control circuit controls the voltage level of the specific node according to the first detection signal.