Invention Grant
- Patent Title: Semiconductor memory device
- Patent Title (中): 半导体存储器件
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Application No.: US13952382Application Date: 2013-07-26
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Publication No.: US08953359B2Publication Date: 2015-02-10
- Inventor: Susumu Shuto , Takayuki Okada , Iwao Kunishima
- Applicant: Kabushiki Kaisha Toshiba
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Holtz, Holtz, Goodman & Chick PC
- Priority: JP2013-044106 20130306
- Main IPC: G11C11/22
- IPC: G11C11/22 ; G11C16/04 ; G11C11/412

Abstract:
According to one embodiment, a semiconductor memory device includes a memory cell and a control circuit. The memory cell is such that a ferroelectric film is provided as a gate dielectric film. When data is stored in the memory cell, the control circuit applies a first voltage to the gate dielectric film and thereafter applies a second voltage, whose amplitude is smaller than that of the first voltage and whose polarity is opposite to that of the first voltage.
Public/Granted literature
- US20140254274A1 SEMICONDUCTOR MEMORY DEVICE Public/Granted day:2014-09-11
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