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. 09, 2016
Filed:
Jan. 30, 2014
Applicant:
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Inventors:
Yusuke Arayashiki, Mie-ken, JP;
Kensuke Takahashi, Mie-ken, JP;
Assignee:
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 45/02 (2006.01); H01L 45/00 (2006.01); H01L 27/24 (2006.01);
U.S. Cl.
CPC ...
H01L 45/085 (2013.01); H01L 27/2481 (2013.01); H01L 45/1233 (2013.01); H01L 45/1266 (2013.01); H01L 45/145 (2013.01); H01L 45/16 (2013.01); H01L 45/1675 (2013.01);
Abstract
A memory device according to an embodiment includes an ion metal layer, an opposing electrode, and a resistance change layer. The ion metal layer contains a first metal and a second metal. The resistance change layer is disposed between the ion metal layer and the opposing electrode. The first metal is able to move repeatedly through an interior of the resistance change layer. The concentration of the first metal in a central portion of the ion metal layer is higher than the concentration of the first metal in an end portion of the ion metal layer.