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:
Oct. 22, 2019
Filed:
Mar. 06, 2017
Seiko Epson Corporation, Tokyo, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A power supply switching circuit that selects one power supply potential from among a plurality of power supply potentials. This power supply switching circuit is provided with a transistor QPthat is connected between an input node Nand node Nand has a back gate connected to node N, a transistor QPthat is connected between node Nand output node Nand has a back gate connected to node N, a transistor QPthat is connected between input node Nand node Nand has a back gate connected to node N, a transistor QPthat is connected between the node Nand Nand has a back gate connected to node N, and a control signal generation unit that sets a group of transistors QPand QPand a group of transistors QPand QPto a conduction state and sets the other to a non-conduction state.