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    • 4. 发明授权
    • Memory cell with resistance-switching layers including breakdown layer
    • 具有电阻切换层的存储单元包括击穿层
    • US08395927B2
    • 2013-03-12
    • US13157208
    • 2011-06-09
    • Franz KreuplChu-Chen FuYibo Nian
    • Franz KreuplChu-Chen FuYibo Nian
    • G11C11/00
    • H01L27/2409G11C11/16G11C11/1659G11C13/0007G11C2213/31G11C2213/71G11C2213/72H01L27/2481H01L45/08H01L45/122H01L45/1233H01L45/1253H01L45/145H01L45/146
    • A memory device in a 3-D read and write memory includes memory cells. Each memory cell includes a resistance-switching memory element (RSME) in series with a steering element. The RSME has a resistance-switching layer, a conductive intermediate layer, and first and second electrodes at either end of the RSME. A breakdown layer is electrically between, and in series with, the second electrode and the intermediate layer. The breakdown layer maintains a resistance of at least about 1-10 MΩ while in a conductive state. In a set or reset operation of the memory cell, an ionic current flows in the resistance-switching layers, contributing to a switching mechanism. An electron flow, which does not contribute to the switching mechanism, is reduced due to scattering by the conductive intermediate layer, to avoid damage to the steering element. Particular materials and combinations of materials for the different layers of the RSME are provided.
    • 3-D读写存储器中的存储器件包括存储器单元。 每个存储单元包括与转向元件串联的电阻切换存储元件(RSME)。 RSME具有电阻切换层,导电中间层以及在RSME的任一端的第一和第二电极。 击穿层在第二电极和中间层之间电连接并与其串联。 击穿层保持至少约1-10MΩ的电阻; 而处于导电状态。 在存储单元的置位或复位操作中,离子电流在电阻切换层中流动,有助于切换机构。 由于导电中间层的散射,对切换机构无贡献的电子流减少,以避免损坏转向元件。 提供了用于RSME不同层的材料和材料的组合。