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    • 92. 发明申请
    • Controlling Pass Voltages To Minimize Program Disturb In Charge-Trapping Memory
    • 控制通过电压以最大限度地减少电荷陷阱存储器中的程序干扰
    • US20160071595A1
    • 2016-03-10
    • US14481304
    • 2014-09-09
    • SanDisk Technologies Inc.
    • Yingda DongHong-Yan Chen
    • G11C16/10G11C16/34G11C16/04
    • G11C16/10G11C11/5628G11C16/0466G11C16/0483G11C16/3427G11C16/3459
    • Techniques are provided for preventing program disturb of unselected memory cells during programming of a selected memory cell in a NAND string which includes a continuous charge-trapping layer, either in a two-dimensional or three-dimensional configuration. In such a NAND string, regions between the memory cells can be inadvertently programmed as parasitic cells due to the program voltage and pass voltages on the word lines. For programmed cells, an upshift in threshold voltage due to a parasitic cell can be avoided by providing a higher pass voltage on an adjacent later-programmed word line than on an adjacent previously-programmed word line. For erased cells, an upshift in threshold voltage due to the parasitic cells can be reduced by progressively lowering the pass voltage on the adjacent later-programmed word line. The lowering can occur when memory cells of a lowest target data state complete programming.
    • 提供技术用于防止在包括二维或三维配置的连续电荷俘获层的NAND串中的所选存储单元的编程期间防止未选择存储单元的程序干扰。 在这种NAND串中,由于程序电压和字线上的通过电压,存储单元之间的区域可能被无意地编程为寄生单元。 对于编程单元,通过在相邻的后面编程的字线上提供比在相邻的预先编程的字线上更高的通过电压,可以避免由寄生电池引起的阈值电压升档。 对于已擦除的单元,可以通过逐渐降低相邻的后编程字线上的通过电压来降低由寄生电池引起的阈值电压升档。 当最低目标数据状态的存储单元完成编程时,可能会发生降低。