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:
Feb. 10, 2026
Filed:
Jun. 20, 2023
Kioxia Corporation, Tokyo, JP;
Yasuhito Nakajima, Yokkaichi Mie, JP;
Kosei Noda, Yokkaichi Mie, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
A semiconductor memory device includes a substrate, a plurality of first conductive layers arranged in a first direction intersecting with a surface of the substrate, a memory structure including a first semiconductor layer opposed to the first conductive layers, a first wiring, a second conductive layer, a first insulating layer separating the plurality of first conductive layers in a second direction, a second insulating layer separating one or a plurality of the first conductive layers disposed on a side closest to the substrate, and a third insulating layer separating one or a plurality of the first conductive layers disposed on a side farthest from the substrate. The memory structure has a tapered shape having a width in the second direction decreasing with increasing distance from the substrate, and the third insulating layer has a tapered shape having a width in the second direction decreasing with decreasing distance from the substrate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile