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:
May. 22, 2018
Filed:
Sep. 06, 2016
Toshiba Memory Corporation, Minato-ku, JP;
Shigeki Kobayashi, Kuwana, JP;
Atsushi Konno, Yokkaichi, JP;
TOSHIBA MEMORY CORPORATION, Minato-ku, JP;
Abstract
According to an embodiment, a semiconductor memory device comprises a substrate, a plurality of first conductive layers, a memory columnar body, a first semiconductor layer, a second semiconductor layer and a contact. The plurality of first conductive layers are stacked upwardly of the substrate. The memory columnar body extends in a first direction intersecting an upper surface of the substrate and a side surface of the memory columnar body is covered by the first conductive layers. The first semiconductor layer is connected to a lower end of the memory columnar body and extends in a second direction intersecting the first direction. The second conductive layer is provided between the first semiconductor layer and the first conductive layers. The second conductive layer is connected to the memory columnar body and extending in the second direction. The contact is connected to the second conductive layer and extends in the first direction.