Invention Grant
- Patent Title: Semiconductor memory device, memory system, and defect detection method
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Application No.: US16562771Application Date: 2019-09-06
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Publication No.: US11309394B2Publication Date: 2022-04-19
- Inventor: Shinya Haraguchi
- Applicant: KIOXIA CORPORATION
- Applicant Address: JP Minato-ku
- Assignee: KIOXIA CORPORATION
- Current Assignee: KIOXIA CORPORATION
- Current Assignee Address: JP Minato-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JPJP2019-023220 20190213
- Main IPC: G11C16/00
- IPC: G11C16/00 ; H01L29/423 ; G11C13/00 ; H01L23/522 ; G11C16/04 ; G11C29/44 ; G11C16/14

Abstract:
A semiconductor memory device includes: a first wiring and a second wiring; a first selection transistor, a memory transistor, and a second selection transistor connected between the first wiring and the second wiring; and a third wiring and a fourth wiring connected to gate electrodes of the first selection transistor and the second selection transistor. From a first timing to a second timing, a first voltage that turns the first selection transistor ON is supplied to the third wiring, and a second voltage that turns the second selection transistor OFF is supplied to the fourth wiring. From the second timing to a third timing, a third voltage that turns the first selection transistor OFF is supplied to the third wiring, and at a fourth timing between the first timing and the third timing, at least one of a voltage and a current of the first wiring is detected.
Public/Granted literature
- US20200258993A1 SEMICONDUCTOR MEMORY DEVICE, MEMORY SYSTEM, AND DEFECT DETECTION METHOD Public/Granted day:2020-08-13
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