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:
Aug. 16, 2022
Filed:
Sep. 08, 2020
Kioxia Corporation, Tokyo, JP;
Ayaha Hachisuga, Yokkaichi, JP;
Daigo Ichinose, Nagoya, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor memory device includes a first conductive layer, and a first structure that extends in a first direction orthogonal to a stacking direction of a stacked body and the stacking direction, and reaches a position deeper than an upper surface of the first conductive layer. The first structure has a first width at a bottom of the stacked body, and a second width narrower than the first width, in a first depth region from a position of the upper surface of the first conductive layer to a first depth position. A third conductive layer is connected to a side surface of the first conductive layer in the first depth region in a second direction orthogonal to the stacking direction and the first direction.