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. 12, 2011
Filed:
Jul. 26, 2007
Hisashi Shima, Tsukuba, JP;
Hiroyuki Akinaga, Tsukuba, JP;
Fumiyoshi Takano, Tsukuba, JP;
Yukio Tamai, Osaka, JP;
Hisashi Shima, Tsukuba, JP;
Hiroyuki Akinaga, Tsukuba, JP;
Fumiyoshi Takano, Tsukuba, JP;
Yukio Tamai, Osaka, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Sharp Corporation, Osaka, JP;
Abstract
The present invention provides switching elements having a readout margin suitable for data storage units of nonvolatile memories, which are obtained by improving the resistance ratio of metal oxide thin films having reversible variable resistance properties. The present invention provides switching elements having a metal oxide consisting of a transition metal and oxygen formed between a first electrode and a second electrode, by modifying one or more of the crystal structure, ionic valence number of metal element, and nonstoichiometricity of a stoichiometric compound consisted of the transition metal and oxygen. The present invention also provides methods for producing switching elements having reversible variable resistance characteristics due to electric power application history.