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. 24, 2012
Filed:
Jun. 25, 2010
Hiroomi Nakajima, Yokohama, JP;
Hiroomi Nakajima, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor memory device includes first lines and second lines and a memory cell array. The first lines and second lines are formed to intersect each other. The memory cell array includes memory cells arranged at intersections of the first lines and the second lines and each formed by connecting a rectification element and a variable-resistance element in series. The rectification element includes a first semiconductor region having an n-type and a second semiconductor region having a p-type. At least a portion of the first semiconductor region is made of a silicon-carbide mixture (SiC(0<x<1)), and the second semiconductor region is made of silicon (Si).