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:
Mar. 12, 2013
Filed:
Aug. 28, 2012
Shunsaku Muraoka, Osaka, JP;
Takeshi Takagi, Kyoto, JP;
Satoru Mitani, Osaka, JP;
Koji Katayama, Nara, JP;
Shunsaku Muraoka, Osaka, JP;
Takeshi Takagi, Kyoto, JP;
Satoru Mitani, Osaka, JP;
Koji Katayama, Nara, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A method includes applying a first polarity writing voltage pulse to a metal oxide layer to change its resistance state from high to low into a write state, applying a second polarity erasing voltage pulse different from the first polarity to the metal oxide layer to change its resistance state from low to high into an erase state, and applying an initial voltage pulse having the second polarity to the metal oxide layer before first application of the writing voltage pulse, to change an initial resistance value of the metal oxide layer. R>RH>RL and |V|>|Ve|≧|Vw| are satisfied where R, RL, and RH are the resistance values of the initial, write, and erase states, respectively, of the metal oxide layer, and V, Vw, and Ve are voltage values of the initial, writing, and erasing voltage pulses, respectively.