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:
Jul. 22, 2014
Filed:
Jan. 26, 2012
Motofumi Saitoh, Kanagawa, JP;
Masayuki Terai, Kanagawa, JP;
Motofumi Saitoh, Kanagawa, JP;
Masayuki Terai, Kanagawa, JP;
Renesas Electronics Corporation, Kawasaki-shi, Kanagawa, JP;
Abstract
Provided is a semiconductor device including: a memory cell having a variable resistance device; and a control unit that controls a voltage applied to the memory cell, wherein the variable resistance device includes a lower electrode contains a first metal material, an upper electrode containing a second metal material, and an insulating film containing oxygen, the first metal material has a normalized oxide formation energy higher than that of the second metal material, and the control unit applies a positive voltage to the upper electrode at the time of an operation of increasing a resistance value of the insulating film and an operation of decreasing the resistance value thereof, and applies a positive voltage to the lower electrode at the time of an operation of reading out the resistance value of the insulating film.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile