Invention Grant
US09142289B2 Method for driving variable resistance element, and nonvolatile memory device
有权
用于驱动可变电阻元件的方法和非易失性存储器件
- Patent Title: Method for driving variable resistance element, and nonvolatile memory device
- Patent Title (中): 用于驱动可变电阻元件的方法和非易失性存储器件
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Application No.: US13883075Application Date: 2012-06-11
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Publication No.: US09142289B2Publication Date: 2015-09-22
- Inventor: Takeshi Takagi , Koji Katayama
- Applicant: Takeshi Takagi , Koji Katayama
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2011-130860 20110613
- International Application: PCT/JP2012/003791 WO 20120611
- International Announcement: WO2012/172773 WO 20121220
- Main IPC: G11C11/21
- IPC: G11C11/21 ; G11C13/00

Abstract:
A driving method for driving a variable resistance element and a nonvolatile memory device, which achieves stable storage operation. In a low resistance write process, a low resistance writing voltage pulse having the negative polarity is applied once to a variable resistance layer included in a variable resistance element while in a high resistance write process, a high resistance writing voltage pulse having the positive polarity is applied more than twice to the same variable resistance layer. Here, when a voltage value of one of the high resistance writing voltage pulses is VH1 and a voltage value of the other high resistance writing voltage pulse applied subsequently is VH2, VH1>VH2 is satisfied.
Public/Granted literature
- US20130223131A1 METHOD FOR DRIVING VARIABLE RESISTANCE ELEMENT, AND NONVOLATILE MEMORY DEVICE Public/Granted day:2013-08-29
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