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:
Apr. 14, 2015
Filed:
Jan. 18, 2012
Zhiqiang Wei, Osaka, JP;
Takeshi Takagi, Kyoto, JP;
Satoru Mitani, Osaka, JP;
Yoshio Kawashima, Osaka, JP;
Ichirou Takahashi, Kyoto, JP;
Zhiqiang Wei, Osaka, JP;
Takeshi Takagi, Kyoto, JP;
Satoru Mitani, Osaka, JP;
Yoshio Kawashima, Osaka, JP;
Ichirou Takahashi, Kyoto, JP;
Abstract
A variable resistance element including: a first electrode; a second electrode; and a variable resistance layer having a resistance value which reversibly changes according to electrical signals applied, wherein the variable resistance layer includes a first variable resistance layer comprising a first oxygen-deficient transition metal oxide, and a second variable resistance layer comprising a second transition metal oxide having a degree of oxygen deficiency lower than a degree of oxygen deficiency of the first oxygen-deficient transition metal oxide, the second electrode has a single needle-shaped part at an interface with the second variable resistance layer, and the second variable resistance layer is interposed between the first variable resistance layer and the second electrode, is in contact with the first variable resistance layer and the second electrode, and covers the single needle-shaped part.