Invention Grant
- Patent Title: Semiconductor memory device
- Patent Title (中): 半导体存储器件
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Application No.: US14444350Application Date: 2014-07-28
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Publication No.: US09305646B2Publication Date: 2016-04-05
- Inventor: Reika Ichihara , Shosuke Fujii , Hidenori Miyagawa , Takayuki Ishikawa
- Applicant: KABUSHIKI KAISHA TOSHIBA
- Applicant Address: JP Minato-ku
- Assignee: KABUSHIKI KAISHA TOSHIBA
- Current Assignee: KABUSHIKI KAISHA TOSHIBA
- Current Assignee Address: JP Minato-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2013-193540 20130918
- Main IPC: G11C11/16
- IPC: G11C11/16 ; G11C13/00 ; H01L45/00

Abstract:
A semiconductor memory device according to an embodiment comprises a memory cell and a control circuit, the control circuit performing write of data to the memory cell. The memory cell includes a second resistance varying layer sandwiched between a first resistance varying layer and a third resistance varying layer. The second resistance varying layer has a resistance value which is smaller than that of the other resistance varying layers. The control circuit applies to the memory cell a first voltage pulse, and then applies to the memory cell a second voltage pulse that has a rise time which is shorter than that of the first voltage pulse.
Public/Granted literature
- US20150078063A1 SEMICONDUCTOR MEMORY DEVICE Public/Granted day:2015-03-19
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