Invention Grant
US07800948B2 Nonvolatile semiconductor memory device 有权
非易失性半导体存储器件

  • Patent Title: Nonvolatile semiconductor memory device
  • Patent Title (中): 非易失性半导体存储器件
  • Application No.: US12092497
    Application Date: 2006-11-01
  • Publication No.: US07800948B2
    Publication Date: 2010-09-21
  • Inventor: Naoki Ueda
  • Applicant: Naoki Ueda
  • Applicant Address: JP Osaka-shi
  • Assignee: Sharp Kabushiki Kaisha
  • Current Assignee: Sharp Kabushiki Kaisha
  • Current Assignee Address: JP Osaka-shi
  • Agency: Morrison & Foerster LLP
  • Priority: JP2005-319074 20051102
  • International Application: PCT/JP2006/321818 WO 20061101
  • International Announcement: WO2007/052684 WO 20070510
  • Main IPC: G11C16/04
  • IPC: G11C16/04
Nonvolatile semiconductor memory device
Abstract:
A nonvolatile semiconductor memory device capable of preventing the disturb phenomenon that could become a serious problem as the nonvolatile memory having a virtual grounding bit line is miniaturized includes a program row voltage application circuit for applying a predetermined program row voltage to the selected word line in programming in the selected memory cell, a program column voltage application circuit for applying a ground voltage to one of a pair of selected bit lines and applying a predetermined program column voltage to the other of the selected bit lines in programming; and a counter voltage application circuit for applying a counter voltage of an intermediate voltage between the ground voltage and program column voltage, to an adjacent unselected bit line not connected to the selected memory cell in the first and second bit lines and adjacent to the selected bit line to which the program column voltage is applied.
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