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    • 2. 发明授权
    • Resistance change memory
    • 电阻变化记忆
    • US08498142B2
    • 2013-07-30
    • US13072029
    • 2011-03-25
    • Kenichi Murooka
    • Kenichi Murooka
    • G11C11/00
    • G11C13/0069G11C13/0002G11C13/0004G11C13/0007G11C13/0023G11C13/0033G11C2013/0092G11C2213/71G11C2213/72
    • A memory includes memory cells each includes a resistance change element and a diode, and each memory cell between one of row lines and one of column lines, a first decoder which selects one of the row lines as a selected row line, a second decoder which selects one of the column lines as a selected column line, a voltage pulse generating circuit which generates a voltage pulse, a voltage pulse shaping circuit which makes a rise time and a fall time of the voltage pulse longer, and a control circuit which applies the voltage pulse outputting from the voltage pulse shaping circuit to unselected column lines except the selected column line, and which applies a fixed potential to unselected row lines except the selected row line, in a data writing to a memory cell which is provided between the selected row line and the selected column line.
    • 存储器包括各自包括电阻变化元件和二极管的存储单元,以及行线和列线之一之间的每个存储单元,选择行行之一作为所选行行的第一解码器,第二解码器, 选择列线之一作为选择的列线,产生电压脉冲的电压脉冲发生电路,使电压脉冲的上升时间和下降时间更长的电压脉冲整形电路以及施加电压脉冲的控制电路 电压脉冲从电压脉冲整形电路输出到除了所选列线之外的未选择的列线,并且在设置在所选择的行之间的存储单元的数据写入中将固定电位施加到除所选行行之外的未选行行 行和所选列行。
    • 4. 发明授权
    • Nonvolatile semiconductor memory device
    • 非易失性半导体存储器件
    • US08320157B2
    • 2012-11-27
    • US12876637
    • 2010-09-07
    • Reika IchiharaTakayuki TsukamotoHiroshi KannoKenichi Murooka
    • Reika IchiharaTakayuki TsukamotoHiroshi KannoKenichi Murooka
    • G11C11/00
    • G11C13/0069G11C13/0007G11C13/0097G11C2213/13G11C2213/34G11C2213/72
    • According to one embodiment, a nonvolatile semiconductor memory device includes a memory cell array and a control circuit. The memory cell array includes a plurality of first wirings, a plurality of second wirings intersecting the plurality of first wirings, and a plurality of memory cells provided at the intersections of the plurality of first and second wirings and each including a non-ohmic element and a variable resistance element connected in series. The control circuit selects one of the plurality of memory cells, generates an erasing pulse for erasing data from the selected memory cell, and supplies the erasing pulse to the selected memory cell. The control circuit executes data erase by applying a voltage of the erasing pulse to the non-ohmic element in the reverse bias direction.
    • 根据一个实施例,非易失性半导体存储器件包括存储单元阵列和控制电路。 存储单元阵列包括多个第一布线,与多条第一布线相交的多条第二布线,以及多个存储单元,设置在多个第一布线和第二布线的交点处,每个包括非欧姆元件和 串联连接的可变电阻元件。 控制电路选择多个存储单元中的一个,产生用于从所选存储单元擦除数据的擦除脉冲,并将擦除脉冲提供给所选存储单元。 控制电路通过在反向偏置方向上向非欧姆元件施加擦除脉冲的电压来执行数据擦除。
    • 7. 发明授权
    • Semiconductor memory device
    • 半导体存储器件
    • US08848418B2
    • 2014-09-30
    • US13327065
    • 2011-12-15
    • Kenichi Murooka
    • Kenichi Murooka
    • G11C11/00
    • H01L45/1233G11C8/10G11C13/0002G11C13/0023G11C2213/71G11C2213/72H01L27/2463H01L27/249H01L45/04H01L45/1226H01L45/146H01L45/147H01L45/149H01L45/1608
    • A semiconductor memory device according to an embodiment comprises a memory cell array configured from a plurality of row lines and column lines that intersect one another, and from a plurality of memory cells disposed at each of intersections of the row lines and column lines and each including a variable resistance element. Where a number of the row lines is assumed to be N, a number of the column lines is assumed to be M, and a ratio of a cell current flowing in the one of the memory cells when a voltage that is half of the select voltage is applied to the one of the memory cells to a cell current flowing in the one of the memory cells when the select voltage is applied to the one of the memory cells is assumed to be k, a relationship M2
    • 根据一个实施例的半导体存储器件包括由多个行线和列线构成的存储单元阵列,所述多个行线和列线彼此相交,并且从布置在行线和列线的每个交点处的多个存储单元组成,并且每个包括 可变电阻元件。 在假设行数为N的情况下,假设列数为M,当存储单元中存在的一个存储单元中的电池电流为选择电压的一半时的电流比 当将选择电压施加到一个存储器单元时,将存储单元中的一个施加到流过该存储单元中的一个存储单元的单元电流,则关系M2 <2×N×k 满意。
    • 8. 发明授权
    • Semiconductor memory device
    • 半导体存储器件
    • US08320156B2
    • 2012-11-27
    • US12695512
    • 2010-01-28
    • Kenichi Murooka
    • Kenichi Murooka
    • G11C11/00G11C5/14
    • G11C13/0007G11C8/08G11C8/12G11C13/0004G11C13/0023G11C2213/71
    • A semiconductor memory device includes a plurality of first wirings; a plurality of second wirings; a plurality of memory cells positioned at respective intersections of the first wirings and the second wirings, each of the memory cells having a variable resistance element and a selective element connected to the variable resistance element in series; a first selection portion selecting the first wiring; a second selection portion selecting the second wiring; and a power source portion applying predetermined selected-wiring-voltages to a selected first wiring being selected by the first selection portion and a selected second wiring being selected by the second selection portion, respectively, and applying predetermined unselected-wiring-voltages to unselected first wirings other than the selected first wiring and unselected second wirings other than the selected second wiring, respectively. A resistance element having a predetermined resistance value is provided between the power source portion and the unselected first and second wirings.
    • 半导体存储器件包括多个第一配线; 多个第二布线; 多个存储单元,位于第一布线和第二布线的相应交点处,每个存储单元具有可变电阻元件和与可变电阻元件串联连接的选择元件; 选择第一布线的第一选择部分; 选择第二布线的第二选择部分; 以及电源部,分别对由所述第一选择部选择的所选择的第一布线和由所述第二选择部选择的所选择的第二布线分别施加预定的选择布线电压,并将预定的未选择布线电压施加到未选择的第一布线电压 除了所选择的第一布线以外的布线和除所选择的第二布线以外的未选择的第二布线。 在电源部分和未选择的第一和第二布线之间设置具有预定电阻值的电阻元件。
    • 9. 发明申请
    • NON-VOLATILE SEMICONDUCTOR MEMORY DEVICE
    • 非易失性半导体存储器件
    • US20120075913A1
    • 2012-03-29
    • US13235431
    • 2011-09-18
    • Tetsuji KUNITAKEKenichi Murooka
    • Tetsuji KUNITAKEKenichi Murooka
    • G11C11/21
    • G11C13/0004G11C8/08G11C8/14G11C13/0007G11C13/0011G11C13/0023G11C13/0069G11C2013/0076G11C2213/71
    • A nonvolatile semiconductor memory device includes: a memory cell array which has a plurality of first lines, a plurality of second lines intersecting the plurality of first lines and a plurality of memory cells which store an electrically rewritable resistance value as data in a non-volatile manner; a first decoder which is connected to one ends of the plurality of first lines and selects the first lines; a second decoder which is connected to the plurality of second lines and selects the second lines; and a voltage applying circuit which is connected to one of the first and second decoders and which applies a predetermined voltage between the first and second lines selected by the first and second decoders. The second decoder sequentially selects the second lines in a direction from the other ends to the one ends of the first lines.
    • 非易失性半导体存储器件包括:存储单元阵列,其具有多个第一线,与多条第一线相交的多条第二线,以及存储电可重写电阻值作为非易失性数据的多个存储单元 方式; 第一解码器,其连接到所述多个第一线的一端并选择所述第一线; 第二解码器,连接到所述多个第二线并选择所述第二线; 以及电压施加电路,其连接到第一和第二解码器中的一个,并且在由第一和第二解码器选择的第一和第二线之间施加预定电压。 第二解码器从第一行的另一端到一端的方向依次选择第二行。