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. 19, 2019
Filed:
Mar. 20, 2017
Toshiba Memory Corporation, Minato-ku, JP;
Jun Nishimura, Kuwana, JP;
Toshiba Memory Corporation, Minato-ku, JP;
Abstract
According to one embodiment, a semiconductor memory device includes a substrate, interconnect portions, a conductive layer, a stacked body, and columnar portions. At least one portion of the interconnect portions is provided inside the substrate, each of the interconnect portions extends in a first direction along a surface of the substrate, and the interconnect portions are arranged along a second direction crossing the first direction. The conductive layer is provided on the interconnect portions. The stacked body is provided on the conductive layer and includes electrode layers stacked to be separated from each other, and each of the electrode layers extends in the second direction. The columnar portions are provided inside the stacked body, each of the columnar portions includes a semiconductor portion extending in a stacking direction of the electrode layers and a charge storage film provided between the semiconductor portion and the stacked body.