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. 18, 2020
Filed:
Aug. 27, 2018
Applicant:
Toshiba Memory Corporation, Tokyo, JP;
Inventors:
Shingo Nakazawa, Kamakura Kanagawa, JP;
Takayuki Miyazaki, Setagaya Tokyo, JP;
Assignee:
TOSHIBA MEMORY CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 13/00 (2006.01); H01L 27/24 (2006.01); H01L 45/00 (2006.01);
U.S. Cl.
CPC ...
G11C 13/0004 (2013.01); G11C 13/004 (2013.01); G11C 13/0069 (2013.01); H01L 27/2436 (2013.01); H01L 45/06 (2013.01); G11C 2213/79 (2013.01); H01L 45/08 (2013.01); H01L 45/1233 (2013.01);
Abstract
According to one embodiment, a semiconductor memory device includes a memory cell having a variable resistance unit, a first selector, and a second selector. The first and second selectors are connected in series with the variable resistance unit and have different switching characteristics from one another. A control unit is provided to write data to the memory cell by setting a resistance state of the variable resistance unit and to read data from the memory cell according to the resistance state of the variable resistance unit.