发明授权
- 专利标题: System that compensates for coupling based on sensing a neighbor using coupling
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申请号: US12205918申请日: 2008-09-08
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公开(公告)号: US07602647B2公开(公告)日: 2009-10-13
- 发明人: Yan Li , Yupin Fong
- 申请人: Yan Li , Yupin Fong
- 申请人地址: US CA Milpitas
- 专利权人: SanDisk Corporation
- 当前专利权人: SanDisk Corporation
- 当前专利权人地址: US CA Milpitas
- 代理机构: Vierra Magen Marcus & DeNiro LLP
- 主分类号: G11C11/34
- IPC分类号: G11C11/34
摘要:
Shifts in the apparent charge stored on a floating gate (or other charge storing element) of a non-volatile memory cell can occur because of the coupling of an electric field based on the charge stored in adjacent floating gates (or other adjacent charge storing elements). To compensate for this coupling, the read or programming process for a given memory cell can take into account the programmed state of an adjacent memory cell. To determine whether compensation is needed, a process can be performed that includes sensing information about the programmed state of an adjacent memory cell (e.g., on an adjacent bit line or other location).
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