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:
Jun. 04, 2019
Filed:
Jul. 20, 2018
Toshiba Memory Corporation, Minato-ku, JP;
Kensuke Ota, Yokkaichi, JP;
Masumi Saitoh, Yokkaichi, JP;
TOSHIBA MEMORY CORPORATION, Minato-ku, JP;
Abstract
A semiconductor memory device comprises a substrate, a plurality of first wirings arranged in a first direction crossing a surface of the substrate, a second wiring extending in the first direction, a variable resistance film provided between the first wiring and the second wiring, a third wiring extending in a second direction crossing the first direction, a select transistor provided between an end of the second wiring and the third wiring. In addition, the semiconductor memory device comprises a chalcogen layer provided at at least a position between the end of the second wiring and the select transistor, and, a position between the third wiring and the select transistor.