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公开(公告)号:US20240276721A1
公开(公告)日:2024-08-15
申请号:US18439898
申请日:2024-02-13
Applicant: Kioxia Corporation
Inventor: Kohei DATE , Kenji AOYAMA , Keisuke SUDA , Minami TANAKA , Satoshi NAGASHIMA
Abstract: According to one embodiment, a semiconductor memory device includes a plurality of conductor layers including a first conductor layer as an uppermost layer; a plurality of memory pillars penetrating the conductor layers; and a member that includes a first portion extending in the conductor layers and a plurality of second portions RT provided apart from each other on the uppermost layer side of the conductor layers, and divides the conductor layers in a direction in a substrate surface; wherein a lower surface of the second portion is located below an upper surface of the first conductor layer, and an upper surface of the second portion is wider in a width in the direction, than the lower surface of the second portion and than the first portion.
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公开(公告)号:US20240096416A1
公开(公告)日:2024-03-21
申请号:US18335680
申请日:2023-06-15
Applicant: Kioxia Corporation
Inventor: Kohei DATE , Keisuke SUDA
CPC classification number: G11C16/0483 , H01L23/5283 , H10B41/10 , H10B41/27 , H10B41/35 , H10B43/10 , H10B43/27 , H10B43/35
Abstract: According to one embodiment, a semiconductor memory device includes: stacked interconnects including a first interconnect layer and a second interconnect layer, the first interconnect layer including a first area and a second area arranged in a first direction, the second interconnect layer being arranged above the first interconnect layer in a second direction intersecting the first direction, the second interconnect layer not including the first area and including the second area; a first memory pillar arranged in the first area and passing through the first interconnect layer in the second direction; and a second memory pillar arranged in the second area and passing through the first interconnect layer and the second interconnect layer in the second direction.
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