Invention Application
- Patent Title: SEMICONDUCTOR MEMORY DEVICE
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Application No.: US18913023Application Date: 2024-10-11
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Publication No.: US20250040135A1Publication Date: 2025-01-30
- Inventor: Megumi ISHIDUKI
- Applicant: KIOXIA CORPORATION
- Applicant Address: JP Tokyo
- Assignee: KIOXIA CORPORATION
- Current Assignee: KIOXIA CORPORATION
- Current Assignee Address: JP Tokyo
- Priority: JP2020-157696 20200918
- Main IPC: H10B43/20
- IPC: H10B43/20 ; H10B41/10 ; H10B41/20 ; H10B41/35 ; H10B43/10 ; H10B43/35

Abstract:
According to one embodiment, a semiconductor memory device includes a stacked layer body including conductive layers stacked to be apart from each other in a first direction, and including a stair-like end with rising parts and terrace parts, wherein successive first conductive layers including an uppermost conductive layer function as select gate lines for a NAND string, and a first contact connected to the uppermost conductive layer provided to correspond to a first rising part which is an uppermost one of the rising parts. The first contact passes through the uppermost conductive layer to be further connected to a first conductive layer adjacent to the uppermost conductive layer.
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