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. 10, 2025
Filed:
Sep. 10, 2021
Kioxia Corporation, Tokyo, JP;
Takashi Shimizu, Nagoya, JP;
Takashi Fukushima, Yokkaichi, JP;
Naomi Fukumaki, Yokkaichi, JP;
Hiroko Tahara, Yokkaichi, JP;
Kenichi Ide, Kuwana, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor memory device includes: a plurality of first conductive layers that each include tungsten; a plurality of insulating films that include a stacked portion and a first projecting portion projecting; a semiconductor layer extending through an inside of a stacked body; a charge storage layer arranged between the plurality of first conductive layers and the semiconductor layer; a plurality of second conductive layers that are each arranged on the first projecting portion in such a manner as to be in contact with a single first conductive layer and that include silicon containing an impurity; and a plurality of contact plugs that are each provided on a single second conductive layer in such a manner as to be in contact with the single second conductive layer.