发明授权
- 专利标题: Reverse coupling effect with timing information
- 专利标题(中): 反向耦合效应与定时信息
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申请号: US11272335申请日: 2005-11-10
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公开(公告)号: US07289348B2公开(公告)日: 2007-10-30
- 发明人: Jian Chen
- 申请人: Jian Chen
- 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: G11C19/06
- IPC分类号: G11C19/06
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 neighboring floating gates (or other neighboring charge storing elements). The problem occurs most pronouncedly between sets of adjacent memory cells that have been programmed at different times. To compensate for this coupling, the read process for a given memory cell will take into account the programmed state of a neighbor memory cell if the neighbor memory cell was programmed subsequent to the given memory cell. Techniques for determining whether the neighbor memory cell was programmed before or after the given memory cell are disclosed.
公开/授权文献
- US20070103981A1 Reverse coupling effect with timing information 公开/授权日:2007-05-10
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