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:
Jan. 03, 2017
Filed:
Mar. 17, 2016
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Naoaki Tsutsui, Kanagawa, JP;
Atsuo Isobe, Kanagawa, JP;
Wataru Uesugi, Kanagawa, JP;
Takuro Ohmaru, Kanagawa, JP;
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Abstract
A memory device includes a first memory circuit including a silicon transistor, a selection circuit including a silicon transistor, and a second memory circuit including oxide semiconductor transistors and a storage capacitor, in which one terminal of the storage capacitor is connected to a portion where two oxide semiconductor transistors are connected in series, an output of the second memory circuit is connected to a second input terminal of the selection circuit, and an input of the second memory circuit is connected to a first input terminal of the selection circuit or an output terminal of the first memory circuit.