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:
Nov. 10, 2009
Filed:
Aug. 12, 2008
Yushi Inoue, Fukuyama, JP;
Tetsuya Ohnishi, Nara, JP;
Kazuya Ishihara, Kurashiki, JP;
Takahiro Shibiuya, Fukuyama, JP;
Yasunari Hosoi, Fukuyama, JP;
Shinobu Yamazaki, Kasaoka, JP;
Takashi Nakano, Fukuyama, JP;
Yushi Inoue, Fukuyama, JP;
Tetsuya Ohnishi, Nara, JP;
Kazuya Ishihara, Kurashiki, JP;
Takahiro Shibiuya, Fukuyama, JP;
Yasunari Hosoi, Fukuyama, JP;
Shinobu Yamazaki, Kasaoka, JP;
Takashi Nakano, Fukuyama, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A manufacturing method for a variable resistive element according to which a stable switching operation can be achieved with excellent reproducibility is provided. A conductive thin film is deposited on a semiconductor substrate and patterned to a predetermined form, and after that, a first interlayer insulating film is deposited. An opening is then created in a predetermined location on the first interlayer insulating film in such a manner that the upper surface of the conductive thin film is exposed and the thickness of the conductive thin film formed at the bottom of this opening is reduced through processing, and after that, an oxidation process is carried out on the periphery of the exposed conductive thin film. As a result, a variable resistor film is formed in the peripheral region of the opening, and this variable resistor film divides the conductive thin film into a first electrode and a second electrode.