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. 09, 2019
Filed:
Aug. 22, 2016
Seiko Epson Corporation, Tokyo, JP;
Masuhide Ikeda, Matsumoto, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
This static electricity protection circuit starts a discharge operation only if an applied voltage is greater than or equal to a set voltage, and protects a discharge circuit also when noise or the like is applied during a normal operation. This static electricity protection circuit includes: a resistor Rand clamp circuit that are connected in series between nodes Nand N; a first transistor that turns on in accordance with an increase in a potential difference generated in the resistor R; a resistor Rand capacitor Cthat are connected via a node Nbetween the nodes Nand N; a second transistor that is connected in series with the first transistor between the nodes Nand N; a resistor Rconnected between the nodes Nand N; a third transistor connected between the nodes Nand N; and a discharge circuit connected between the nodes Nand N