Punch-through diode steering element
    77.
    发明授权
    Punch-through diode steering element 有权
    穿通二极管转向元件

    公开(公告)号:US08575715B2

    公开(公告)日:2013-11-05

    申请号:US13571100

    申请日:2012-08-09

    IPC分类号: H01L29/66

    摘要: A storage system and method for forming a storage system that uses punch-through diodes as a steering element in series with a reversible resistivity-switching element is described. The punch-through diode allows bipolar operation of a cross-point memory array. The punch-through diode may have a symmetrical non-linear current/voltage relationship. The punch-through diode has a high current at high bias for selected cells and a low leakage current at low bias for unselected cells. Therefore, it is compatible with bipolar switching in cross-point memory arrays having resistive switching elements. The punch-through diode may be a N+/P−/N+ device or a P+/N−/P+ device.

    摘要翻译: 描述了一种用于形成使用穿通二极管作为与可逆电阻率切换元件串联的转向元件的存储系统的存储系统和方法。 穿通二极管允许交叉点存储器阵列的双极性操作。 穿通二极管可具有对称的非线性电流/电压关系。 穿通二极管在选择的电池的高偏压下具有高电流,对于未选择的电池,在低偏压下具有低泄漏电流。 因此,它与具有电阻式开关元件的交叉点存储器阵列中的双极开关兼容。 穿通二极管可以是N + / P- / N +器件或P + / N- / P +器件。

    Programming reversible resistance switching elements
    78.
    发明授权
    Programming reversible resistance switching elements 有权
    编程可逆电阻开关元件

    公开(公告)号:US08154904B2

    公开(公告)日:2012-04-10

    申请号:US12488159

    申请日:2009-06-19

    IPC分类号: G11C11/00 G11C8/00

    摘要: A storage system and method for operating the storage system that uses reversible resistance-switching elements is described. Techniques are disclosed herein for varying programming conditions to account for different resistances that memory cells have. These techniques can program memory cells in fewer attempts, which can save time and/or power. Techniques are disclosed herein for achieving a high programming bandwidth while reducing the worst case current and/or power consumption. In one embodiment, a page mapping scheme is provided that programs multiple memory cells in parallel in a way that reduces the worst case current and/or power consumption.

    摘要翻译: 描述了一种用于操作使用可逆电阻切换元件的存储系统的存储系统和方法。 本文公开了用于改变编程条件以解决存储器单元具有的不同电阻的技术。 这些技术可以以较少的尝试编程存储器单元,这可以节省时间和/或功率。 本文公开了用于实现高编程带宽同时减少最坏情况下的电流和/或功率消耗的技术。 在一个实施例中,提供了以减少最坏情况下的电流和/或功率消耗的方式并行地编程多个存储器单元的页面映射方案。

    FORMING AND TRAINING PROCESSES FOR RESISTANCE-CHANGE MEMORY CELL
    79.
    发明申请
    FORMING AND TRAINING PROCESSES FOR RESISTANCE-CHANGE MEMORY CELL 有权
    电阻变化记忆细胞的形成和培训过程

    公开(公告)号:US20110229990A1

    公开(公告)日:2011-09-22

    申请号:US12842810

    申请日:2010-07-23

    IPC分类号: H01L21/66 H01L21/16

    摘要: During the manufacture of a set of non-volatile resistance-switching memory elements, a forming process is performed in which a voltage is applied over forming period until a conductive filament is formed in a resistance-switching layer. A heat source at a temperature of 50° C. to 150° C. is applied to expedite the forming process while reducing the required magnitude of the applied voltage. Manufacturing time and reliability are improved. After the forming process, an expedited training process can be performed in which a fixed number of cycles of voltage pulses are applied without verifying the memory elements. Subsequently, the memory elements are verified by determining their read current in an evaluation. Another fixed number of cycles of voltage pulses is applied without verifying the memory elements, if the memory elements do not pass the evaluation.

    摘要翻译: 在一组非易失性电阻切换存储元件的制造期间,进行形成处理,其中在形成周期上施加电压,直到在电阻切换层中形成导电细丝。 施加温度为50℃至150℃的热源以加速成形过程,同时降低施加电压的所需幅度。 制造时间和可靠性得到提高。 在形成处理之后,可以执行加速训练处理,其中施加固定数量的电压脉冲循环,而不验证存储元件。 随后,通过在评估中确定它们的读取电流来验证存储器元件。 如果存储器元件不通过评估,则施加电压脉冲的另一固定数量的循环,而不验证存储器元件。

    RESISTANCE-SWITCHING MEMORY CELL WITH HEAVILY DOPED METAL OXIDE LAYER
    80.
    发明申请
    RESISTANCE-SWITCHING MEMORY CELL WITH HEAVILY DOPED METAL OXIDE LAYER 有权
    电阻切换存储单元与重金属氧化物层

    公开(公告)号:US20110227024A1

    公开(公告)日:2011-09-22

    申请号:US12842798

    申请日:2010-07-23

    IPC分类号: H01L45/00 H01L21/16

    摘要: A non-volatile resistance-switching memory element includes a resistance-switching element formed from a metal oxide layer having a dopant which is provided at a relatively high concentration such as 10% or greater. Further, the dopant is a cation having a relatively large ionic radius such as 70 picometers or greater, such as Magnesium, Chromium, Calcium, Scandium or Yttrium. A cubic fluorite phase lattice may be formed in the metal oxide even at room temperature so that switching power may be reduced. The memory element may be pillar-shaped, extending between first and second electrodes and being in series with a steering element such as a diode. The metal oxide layer may be deposited at the same time as the dopant. Or, using atomic layer deposition, an oxide of a first metal can be deposited, followed by an oxide of a second metal, followed by annealing to cause intermixing, in repeated cycles.

    摘要翻译: 非易失性电阻切换存储元件包括由具有以比较高的浓度(例如10%以上)设置的掺杂剂的金属氧化物层形成的电阻切换元件。 此外,掺杂剂是诸如镁,铬,钙,钪或钇之类的诸如70皮度或更大的离子半径相对较大的阳离子。 即使在室温下也可以在金属氧化物中形成立方萤石相晶格,从而可以降低开关功率。 存储元件可以是柱形的,在第一和第二电极之间延伸并且与诸如二极管的转向元件串联。 金属氧化物层可以与掺杂剂同时沉积。 或者,使用原子层沉积,可沉积第一金属的氧化物,然后沉积第二金属的氧化物,然后在重复循环中进行退火以引起混合。