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. 07, 2014
Filed:
Nov. 08, 2012
Panasonic Corporation, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A nonvolatile memory element includes: a first electrode; a second electrode; and a variable resistance layer comprising a metal oxide positioned between the first electrode and the second electrode. The variable resistance layer includes: a first oxide layer having a resistivity ρ, on the first electrode; a second oxide layer having a resistivity ρ(ρ<ρ), on the first oxide layer; a third oxide layer having a resistivity ρ(ρ<ρ), on the second oxide layer; and a localized region that is positioned in the third oxide layer and the second oxide layer to be in contact with the second electrode and not to be in contact with the first oxide layer, and is, in resistivity, lower than the third oxide layer and different from the second oxide layer.