Invention Grant
- Patent Title: Semiconductor memory device
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Application No.: US17471584Application Date: 2021-09-10
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Publication No.: US12272644B2Publication Date: 2025-04-08
- Inventor: Kouji Matsuo , Fumitaka Arai
- Applicant: Kioxia Corporation
- Applicant Address: JP Tokyo
- Assignee: Kioxia Corporation
- Current Assignee: Kioxia Corporation
- Current Assignee Address: JP Tokyo
- Agency: Foley & Lardner LLP
- Priority: JP2021-047990 20210322
- Main IPC: H01L23/528
- IPC: H01L23/528 ; H01L23/522 ; H10B41/27 ; H10B41/41 ; H10B43/27 ; H10B43/40

Abstract:
A semiconductor memory device includes memory block regions arranged in a first direction, a hook-up region arranged in the first direction with respect to memory block regions, and a wiring region extending in the first direction and arranged with memory block regions and the hook-up region in a second direction. Each of memory block regions includes memory strings extending in the first direction and arranged in the second direction and a first wiring extending in the second direction and connected to memory strings in common. The wiring region includes a second wiring extending in the first direction and connected to first wirings corresponding to memory block regions in common. The hook-up region includes a third wiring connected to the second wiring and a contact electrode extending in a third direction and connected to the third wiring.
Public/Granted literature
- US20220302016A1 SEMICONDUCTOR MEMORY DEVICE Public/Granted day:2022-09-22
Information query
IPC分类: