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:
Jul. 15, 2025
Filed:
Feb. 24, 2022
Kioxia Corporation, Tokyo, JP;
Ken Furubayashi, Yokohama Kanagawa, JP;
Sachiyo Ito, Kawasaki Kanagawa, JP;
Takuya Konno, Yokkaichi Mie, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
A semiconductor storage device includes a stacked body in which a plurality of conductive layers and a plurality of insulating layers are alternately stacked along a stacking direction, and a plurality of first pillars extending in the stacked body along the stacking direction to form memory cells at intersections with at least some of the plurality of conductive layers. The stacked body includes a stair portion in which the plurality of conductive layers are stacked in a stepped manner at a position separated from the plurality of first pillars in a first direction intersecting the stacking direction. At least a lowermost insulating layer of the plurality of insulating layers has at least one bending portion bent in the stacking direction at an end of the plurality of conductive layers in the stair portion along the first direction.