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. 23, 2007
Filed:
Feb. 22, 2005
Yasunari Sugita, Osaka, JP;
Akihiro Odagawa, Osaka, JP;
Hideaki Adachi, Osaka, JP;
Satoshi Yotsuhashi, Hyogo, JP;
Tsutomu Kanno, Osaka, JP;
Kiyoshi Ohnaka, Osaka, JP;
Yasunari Sugita, Osaka, JP;
Akihiro Odagawa, Osaka, JP;
Hideaki Adachi, Osaka, JP;
Satoshi Yotsuhashi, Hyogo, JP;
Tsutomu Kanno, Osaka, JP;
Kiyoshi Ohnaka, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The present invention lowers a drive voltage of a RRAM, which is a promising low power consumption, high-speed memory and suppresses variations in the width of an electric pulse for realizing a same resistance change. The present invention provides a variable resistance element including: a first electrode; a layer in which its resistance is variable by applying an electric pulse thereto, the layer being formed on the first electrode; and a second electrode formed on the layer; wherein the layer has a perovskite structure; and the layer has at least one selected from depressions and protrusions in an interface with at least one electrode selected from the first electrode and the second electrode.