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:
Jan. 04, 2011
Filed:
Aug. 08, 2006
Hiroyuki Akinaga, Ibaraki, JP;
Shuichiro Yasuda, Ibaraki, JP;
Isao Inoue, Ibaraki, JP;
Hidenori Takagi, Ibaraki, JP;
Hiroyuki Akinaga, Ibaraki, JP;
Shuichiro Yasuda, Ibaraki, JP;
Isao Inoue, Ibaraki, JP;
Hidenori Takagi, Ibaraki, JP;
Abstract
An objective of the present invention is to provide a switching device that shows two markedly different stable resistance characteristics reversibly and repetitively, and which is applicable to highly integrated nonvolatile memories. The present invention provides a switching device, which comprises a variable resistor element that has, between two electrodes, a metal-oxide thin-film comprising a single central metal element with a compositional variation; which is connected to a control circuit which can apply, between said two electrodes, a voltage or a current selected from among a voltage or a current of the first threshold or higher, a voltage or a current of the second threshold or lower whose absolute value is smaller than the absolute value of said first threshold, and a voltage or a current of the third threshold or lower whose absolute value is smaller than the absolute value of said second threshold; and in which the interelectrode resistance characteristic reversibly changes by a factor of 1,000 to 10,000 in the voltage or current region whose absolute value is equal to or below the third threshold.