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    • 6. 发明专利
    • Multivalued resistance change memory
    • 多变电阻变化记忆
    • JP2012064271A
    • 2012-03-29
    • JP2010207178
    • 2010-09-15
    • Toshiba Corp株式会社東芝
    • ICHIHARA REIKA
    • G11C13/00H01L27/105H01L45/00H01L49/00
    • G11C11/5685G11C13/003G11C13/004G11C13/0069G11C13/0097G11C2013/0092G11C2211/562G11C2211/563G11C2213/76H01L45/04H01L45/1233H01L45/146H01L45/1675
    • PROBLEM TO BE SOLVED: To provide a multivalued resistance change memory which has excellent writing controllability and high reliability.SOLUTION: The multivalued resistance change memory includes: a first resistance change film RW1 whose one end is connected to a first node N1 and the other end is connected to a second node N2; a second resistance change film RW2 whose one end is connected to a third node N3 and the other end is connected to the second node N2; a memory cell MC provided with a capacitor CP connected between the first and second nodes N1 and N2; a voltage pulse generating circuit 21 for generating a first voltage pulse passing through a first path A including the first and second resistance change films RW1 and RW2, and a second voltage pulse passing through a second path B including the second resistance change film RW2 and the capacitor CP; and a control circuit 22 for storing multivalued data in the memory cell MC using the first and second voltage pulses when the data is written.
    • 要解决的问题:提供具有优异的写入可控性和高可靠性的多值电阻变化存储器。 多值电阻变化存储器包括:第一电阻变化膜RW1,其一端连接到第一节点N1,另一端连接到第二节点N2; 第二电阻变化膜RW2,其一端连接到第三节点N3,另一端连接到第二节点N2; 设置有连接在第一和第二节点N1和N2之间的电容器CP的存储单元MC; 用于产生通过包括第一和第二电阻变化膜RW1和RW2的第一路径A的第一电压脉冲的电压脉冲发生电路21和通过包括第二电阻变化膜RW2的第二通路B的第二电压脉冲和 电容CP; 以及控制电路22,用于在写入数据时使用第一和第二电压脉冲存储存储单元MC中的多值数据。 版权所有(C)2012,JPO&INPIT