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    • 1. 发明申请
    • MEMORY DEVICES INCLUDING INTEGRATED TUNNEL DIODE IN CONTACT AND TECHNIQUES FOR FORMING SAME
    • 包括集成的隧道二极管在内的存储器件以及形成相同的技术
    • WO2017111844A1
    • 2017-06-29
    • PCT/US2015/000403
    • 2015-12-24
    • INTEL CORPORATION
    • PILLARISETTY, RaviMAJHI, PrashantMUKHERJEE, NiloyKARPOV, Elijah, V.SHAH, Uday
    • H01L27/115H01L21/8247
    • H01L27/11582H01L28/00
    • Techniques are disclosed for integrating a tunnel diode in a 1T-1 R resistive random-access memory (RRAM) cell. The tunnel diode can be connected in series with the RRAM cell, so as to provide current control. The diode's p-n junction can be formed, for example, using the source/drain material and an additional diode material layer there over, which may be, for example, an epitaxial p-type or n-type material doped opposite the underlying source/drain material. A source contact and the source portion may be electronically contacted through the diode portion. The P+/N+ tunnel diode provided by the source portion and diode portion may provide a negative differential resistance (NDR) that serves to clamp current and protect against overshoot during the RRAM device's FORMING and SET operations, reducing RRAM filament damage. In some cases, the tunnel diode may be configured to provide high conductance in an opposite polarity during the RRAM device's RESET operation.
    • 公开了用于在1T-1R电阻式随机存取存储器(RRAM)单元中集成隧道二极管的技术。 隧道二极管可以与RRAM单元串联连接,以提供电流控制。 二极管的pn结可以例如使用源极/漏极材料和其上的附加二极管材料层形成,其可以是例如与下面的源极/漏极相对地被掺杂的外延p型或n型材料 材料。 源极触点和源极部分可以通过二极管部分电子接触。 由源极部分和二极管部分提供的P + / N +隧道二极管可提供负差分电阻(NDR),用于钳位电流并防止RRAM器件的FORMING和SET操作期间的过冲,从而减少RRAM灯丝损坏。 在一些情况下,隧道二极管可以被配置为在RRAM器件的RESET操作期间以相反的极性提供高电导。