Innovative approach of 4F2 driver formation for high-density RRAM and MRAM
    30.
    发明授权
    Innovative approach of 4F2 driver formation for high-density RRAM and MRAM 有权
    用于高密度RRAM和MRAM的4F2驱动器形成的创新方法

    公开(公告)号:US09520446B2

    公开(公告)日:2016-12-13

    申请号:US14450809

    申请日:2014-08-04

    Abstract: Some embodiments of the present disclosure relate to a memory array comprising memory cells having vertical gate-all-around (GAA) selection transistors. In some embodiments, the memory array has a source region disposed within an upper surface of a semiconductor body, and a semiconductor pillar of semiconductor material extending outward from the upper surface of the semiconductor body and having a channel region and an overlying drain region. A gate region vertically overlies the source region at a position laterally separated from sidewalls of the channel region by a gate dielectric layer. A first metal contact couples the drain region to a data storage element that stores data. The vertical GAA selection transistors provide for good performance, while decreasing the size of the selection transistor relative to a planar MOSFET, so that the selection transistors do not negatively impact the size of the memory array.

    Abstract translation: 本公开的一些实施例涉及包括具有垂直栅极全周(GAA)选择晶体管的存储器单元的存储器阵列。 在一些实施例中,存储器阵列具有设置在半导体本体的上表面内的源极区域和从半导体本体的上表面向外延伸并具有沟道区域和上覆漏极区域的半导体材料的半导体柱。 栅极区域通过栅极介电层在与沟道区域的侧壁横向分离的位置处垂直地覆盖源极区域。 第一金属触点将漏极区域耦合到存储数据的数据存储元件。 垂直GAA选择晶体管提供良好的性能,同时相对于平面MOSFET减小选择晶体管的尺寸,使得选择晶体管不会对存储器阵列的尺寸产生负面影响。

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