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:
Feb. 16, 2016
Filed:
Feb. 28, 2014
Kabushiki Kaisha Toshiba, Tokyo, JP;
Kazuhiro Kato, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An electrostatic protection circuit includes a trigger circuit connected between a first and second power source line. The trigger circuit outputs a trigger signal in response to a voltage difference between the power source lines, such as occurs when an electrostatic discharge is received along the power source lines. A buffer circuit in the protection circuit outputs a drive signal in response to the trigger signal. A switch circuit is connected between the first and second power source lines and controls the ON/OFF conduction state between the power source lines in response to the drive signal. A control circuit supplies a control signal to the switch circuit after the drive signal causes the switch circuit to switch to the ON conduction state. The control signal maintains the switch in the ON conduction state while the voltage difference between power source lines exceeds a predetermined value.