发明授权
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
- 专利标题: Method for driving variable resistance element, and nonvolatile memory device
- 专利标题(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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申请号: US13883075申请日: 2012-06-11
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公开(公告)号: US09142289B2公开(公告)日: 2015-09-22
- 发明人: Takeshi Takagi , Koji Katayama
- 申请人: Takeshi Takagi , Koji Katayama
- 申请人地址: JP Osaka
- 专利权人: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- 当前专利权人: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- 当前专利权人地址: JP Osaka
- 代理机构: Wenderoth, Lind & Ponack, L.L.P.
- 优先权: JP2011-130860 20110613
- 国际申请: PCT/JP2012/003791 WO 20120611
- 国际公布: WO2012/172773 WO 20121220
- 主分类号: G11C11/21
- IPC分类号: G11C11/21 ; G11C13/00
摘要:
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.
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