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:
Aug. 05, 2014
Filed:
Mar. 16, 2011
Applicants:
Munehiro Tada, Tokyo, JP;
Koichiro Okamoto, Tokyo, JP;
Toshitsugu Sakamoto, Tokyo, JP;
Hiromitsu Hada, Tokyo, JP;
Inventors:
Munehiro Tada, Tokyo, JP;
Koichiro Okamoto, Tokyo, JP;
Toshitsugu Sakamoto, Tokyo, JP;
Hiromitsu Hada, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A variable resistance element includes a first electrode, a second electrode and an ion conduction layer interposed between the first and second electrodes. The ion conduction layer contains an organic oxide containing at least oxygen and carbon. The carbon concentration distribution in the ion conduction layer is such that the carbon concentration in an area closer to the first electrode is greater than that in an area closer to the second electrode.