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. 12, 2026
Filed:
Sep. 01, 2023
Kioxia Corporation, Tokyo, JP;
Satoshi Nagashima, Yokkaichi Mie, JP;
KIOXIA CORPORATION, Tokyo, JP;
Abstract
A semiconductor memory device includes a first stacked body, a second stacked body, an interposed portion, and a columnar body. The interposed portion is disposed between the first stacked body and the second stacked body. The columnar body includes a first columnar portion extending in a first direction inside the first stacked body, a second columnar portion extending in the first direction inside the second stacked body, and a connection portion disposed in the interposed portion and connecting the first columnar portion to the second columnar portion. At least part of the interposed portion has a first layer containing a first insulating material, a second layer disposed between the first layer and the second stacked body in the first direction and containing the first insulating material, and a third layer disposed between the first layer and the second layer in the first direction and containing a first material different from the first insulating material.