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:
Jun. 26, 2007
Filed:
Jun. 28, 2005
Yasunari Hosoi, Fukuyama, JP;
Yukio Tamai, Tsuchiura, JP;
Kazuya Ishihara, Kurashiki, JP;
Shinji Kobayashi, Nara, JP;
Nobuyoshi Awaya, Fukuyama, JP;
Yasunari Hosoi, Fukuyama, JP;
Yukio Tamai, Tsuchiura, JP;
Kazuya Ishihara, Kurashiki, JP;
Shinji Kobayashi, Nara, JP;
Nobuyoshi Awaya, Fukuyama, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A variable resistance element is configured to be provided with a perovskite-type oxide between a first electrode and a second electrode, of which electric resistance between the first electrode and the second electrode is changed by applying a voltage pulse of a predetermined polarity between the first electrode and the second electrode, and the variable resistance element has a resistance hysteresis characteristic, in which a changing rate of a resistance value is changed from positive to negative with respect to increase of a cumulative pulse applying time in the application of the voltage pulse. The voltage pulse is applied to the variable resistance element so that the cumulative pulse applying time is not longer than a specific cumulative pulse applying time, in which the changing rate of the, resistance value is changed from positive to negative with respect to increase of the cumulative pulse applying time in the resistance hysteresis characteristic.