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    • 14. 发明公开
    • Method for programming a nonvolatile memory
    • Verfahren zum programmieren einesnichflüchtigenSpeicher
    • EP0763829A2
    • 1997-03-19
    • EP96113461.6
    • 1996-08-22
    • LG Semicon Co., Ltd.
    • Choi, Woong-Lim
    • G11C16/06
    • G11C16/3486G11C11/5621G11C11/5628G11C11/5635G11C16/10G11C16/3468G11C2211/5624
    • A method for programming a nonvolatile memory cell having a control gate (1), a floating gate (2), a drain (5), a sour e (3), and a channel region (4) disposed between the drain (5) and source (3), the method includes the steps of applying a first voltage to the control gate (1) to form an inversion layer in the channel region (4), the first voltage being varied to program at least two threshold levels of the memory cell, applying a second voltage to the drain (5) and a third voltage to the source (3), the second voltage being greater than the third voltage, monitoring a current flowing between the drain (5) and the source (3) during the programming of the at least two threshold levels, and terminating any one of the first voltage, the second voltage, and the third voltage when the monitored current reaches a preset reference current to thereby stop the programming of the at least two threshold levels.
    • 用于编程具有设置在漏极和源极之间的控制栅极,浮置栅极,漏极,源极和沟道区域的非易失性存储器单元的方法包括:向所述控制栅极施加第一电压以在所述控制栅极, 通道区域。 改变第一电压以对存储器单元的至少两个阈值电平进行编程。 向漏极施加第二电压,向源极施加第三电压,第二电压大于第三电压。 在对至少两个阈值电平进行编程期间,监视在漏极和源极之间流动的电流。 当监视的电流达到预设的参考电流以停止对至少两个阈值电平的编程时,终止第一电压,第二电压和第三电压中的任何一个。 参考电流在至少两个阈值电平的编程期间具有固定值。
    • 18. 发明公开
    • Channel hot electron injection programming method and related device
    • Kanalverfahren mitheißerElektroneinspritzprogrammierung undzugehörigeVorrichtung
    • EP2369593A1
    • 2011-09-28
    • EP11150599.6
    • 2011-01-11
    • EMemory Technology Inc.
    • Chen, Ying-JeTing, Yun-JenSun, Wein-TownHsiao, Kai-YuanLiu, Cheng-Jye
    • G11C16/10
    • G11C16/10G11C16/3468
    • A nonvolatile memory device for reducing programming current and improving reliability comprises a memory cell array, a write circuit, and a verification circuit. The memory cell array comprises memory cells (10) arranged at crossing points of a bit-line and word-line matrix of the memory cell array. The write circuit provides multiple variable pulses to each word-line for programming. The multiple variable pulses have predetermined amplitude for keeping gate injection current roughly maximum while lowering conduction current during programming operation. The verification circuit senses variation of the conduction current during the programming operation, and disables the programming operation if the sensed conduction current during the programming operation reaches a predetermined value.
    • 用于减少编程电流和提高可靠性的非易失性存储器件包括存储单元阵列,写入电路和验证电路。 存储单元阵列包括布置在存储单元阵列的位线和字线矩阵的交叉点处的存储单元(10)。 写电路为每个字线提供多个可变脉冲进行编程。 多个可变脉冲具有预定的幅度,用于在编程操作期间降低导通电流,保持栅极注入电流大致最大。 验证电路在编程操作期间感测导通电流的变化,并且如果在编程操作期间感测到的传导电流达到预定值,则禁止编程操作。
    • 19. 发明公开
    • Word line compensation in non-volatile memory erase operations
    • Ausgleich von Wortleitungen在Löschvorgängen在nichtflüchtigenSpeichern
    • EP2306463A1
    • 2011-04-06
    • EP10012052.6
    • 2005-12-15
    • SanDisk Corporation
    • Wan, JunPang, Chan-suiLutze, Jeffrey W.
    • G11C16/16G11C16/04G11C16/34
    • G11C8/08G11C16/0483G11C16/16G11C16/3468
    • Compensation voltage(s) are applied to a non-volatile memory system during erase operations to equalize the erase behavior of memory cells. Compensation voltages can compensate for voltages capacitively coupled to memory cells of a NAND string from other memory cells and/or select gates. A compensation voltage can be applied to one or more memory cells to substantially normalize the erase behavior of the memory cells. A compensation voltage can be applied to end memory cells of a NAND string to equalize their erase behavior with interior memory cells of the NAND string. A compensation voltage can also be applied to interior memory cells to equalize their erase behavior with end memory cells. Additionally, a compensation voltage can be applied to one or more select gates of a NAND string to compensate for voltages coupled to one or more memory cells from the select gate(s). Various compensation voltages can be used.
    • 在擦除操作期间,将补偿电压施加到非易失性存储器系统以均衡存储器单元的擦除行为。 补偿电压可以补偿电容耦合到来自其他存储器单元和/或选择门的NAND串的存储器单元的电压。 可以将补偿电压施加到一个或多个存储器单元,以基本上规范化存储器单元的擦除行为。 可以将补偿电压施加到NAND串的末端存储单元,以使其与NAND串的内部存储单元的擦除行为相等。 还可以将补偿电压施加到内部存储器单元,以使其与末端存储器单元的擦除行为相等。 另外,补偿电压可以施加到NAND串的一个或多个选择栅极,以补偿耦合到来自选择栅极的一个或多个存储器单元的电压。 可以使用各种补偿电压。