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:
Mar. 25, 2025
Filed:
Aug. 25, 2021
Kioxia Corporation, Tokyo, JP;
Mitsunori Masaki, Yokkaichi, JP;
Hisashi Kato, Yokkaichi, JP;
Kazuhiro Nojima, Mie, JP;
Shoichi Miyazaki, Yokkaichi, JP;
Akira Yotsumoto, Yokkaichi, JP;
Kanako Shiga, Yokkaichi, JP;
Yu Hirotsu, Kuwana, JP;
Osamu Matsuura, Kuwana, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
Semiconductor memory device includes: a first and second member each extending in a first direction in a boundary part between a first and second block region and arranged in the first direction; a support pillar arranged between the first and second member at the boundary part; conductive layers separated from one another and arranged in a third direction and split by the first and second member, and the support pillar into a first and second portion; and a memory pillar penetrating through the conductive layers. The support pillar includes a lower and upper pillar. A side face of the lower pillar and an extension of a side face of the upper pillar are displaced from each other in a plane based on a second and the third direction.