Invention Grant
- Patent Title: Semiconductor memory device
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Application No.: US17009389Application Date: 2020-09-01
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Publication No.: US11189348B2Publication Date: 2021-11-30
- Inventor: Takeshi Hioka , Naofumi Abiko , Masaki Unno
- Applicant: KIOXIA CORPORATION
- Applicant Address: JP Tokyo
- Assignee: KIOXIA CORPORATION
- Current Assignee: KIOXIA CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Kim & Stewart LLP
- Priority: JPJP2019-222788 20191210
- Main IPC: G11C16/14
- IPC: G11C16/14 ; G11C11/56 ; G11C16/04 ; H01L27/11582 ; H01L27/11556

Abstract:
A semiconductor memory device includes a first memory cell, a first select transistor between the first memory cell and a source line, a second select transistor between the first memory cell and a bit line, a third select transistor between the source line and the bit line, and a control circuit. During an erase operation, the control circuit is configured to apply a first voltage to the source line, apply a second voltage lower than the first voltage to a gate of the third select transistor while applying the first voltage to the source line to cause a third voltage to be applied to the bit line, and apply a fourth voltage lower than the third voltage to the gate of the second select transistor while the third voltage is applied to the bit line.
Public/Granted literature
- US20210174879A1 SEMICONDUCTOR MEMORY DEVICE Public/Granted day:2021-06-10
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