发明申请
US20130223131A1 METHOD FOR DRIVING VARIABLE RESISTANCE ELEMENT, AND NONVOLATILE MEMORY DEVICE 有权
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): 驱动可变电阻元件的方法和非易失性存储器件
  • 申请号: US13883075
    申请日: 2012-06-11
  • 公开(公告)号: US20130223131A1
    公开(公告)日: 2013-08-29
  • 发明人: Takeshi TakagiKoji Katayama
  • 申请人: Takeshi TakagiKoji Katayama
  • 优先权: JP2011-130860 20110613
  • 国际申请: PCT/JP2012/003791 WO 20120611
  • 主分类号: G11C13/00
  • IPC分类号: G11C13/00
METHOD FOR DRIVING VARIABLE RESISTANCE ELEMENT, AND NONVOLATILE MEMORY DEVICE
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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