Semiconductor memory device in which a failed memory cell is placed with
another memory cell
    83.
    发明授权
    Semiconductor memory device in which a failed memory cell is placed with another memory cell 失效
    半导体存储器件,其中故障存储器单元被另一存储单元替代

    公开(公告)号:US5684746A

    公开(公告)日:1997-11-04

    申请号:US567688

    申请日:1995-12-05

    CPC分类号: G11C29/76 G11C29/24

    摘要: A semiconductor memory device including a memory cell array having memory cells arranged in XY directions, means for storing at least X addresses of failure bit memory cells among memory cells defined by an X address and a Y address in the memory cell array, and address means for generating an address Xe+m (m=positive or negative integer), serving as an internal address, when X address Xe corresponding to the failure bit address is inputted from an external section.

    摘要翻译: 一种半导体存储器件,包括具有以XY方向布置的存储单元的存储单元阵列,用于在存储单元阵列中由X地址和Y地址定义的存储单元中存储故障位存储单元的至少X个地址的装置,以及地址单元 用于当从外部输入与故障位地址对应的X地址Xe时,产生用作内部地址的地址Xe + m(m =正或负整数)。

    Semiconductor memory device
    84.
    发明授权
    Semiconductor memory device 失效
    半导体存储器件

    公开(公告)号:US4825268A

    公开(公告)日:1989-04-25

    申请号:US213435

    申请日:1988-06-27

    申请人: Yukihito Oowaki

    发明人: Yukihito Oowaki

    摘要: A semiconductor memory device comprises a plurality of one-bit memory cells each having a MOS transistor and a MOS capacitor and arranged two-dimensionally. Of the memory cells along the column direction selected according to selection of a word line, adjacent cells are made different in the structure of cell capacitors. Such structural difference is realized by presence or absence of an impurity layer which has the same electrically-conductive type as a semiconductor substrate and higher in impurity concentration than the substrate between their storage nodes and the substrate, or by the difference in the surface area of the storage nodes when viewed from the substrate side, whereby when the semiconductor memory device is subjected to a single .alpha. ray at most one of the memory cells at least along the column direction causes a soft error.

    摘要翻译: 半导体存储器件包括多个1比特存储单元,每个存储单元具有MOS晶体管和MOS电容器并且二维布置。 在根据字线的选择选择的沿着列方向的存储单元中,在单元电容器的结构中使相邻单元不同。 这种结构差异是通过存在或不存在具有与半导体衬底相同的导电类型和杂质浓度高于其存储节点和衬底之间的衬底的杂质层的存在或不存在,或通过其表面积的差异 当从基板侧观察存储节点时,至少在沿着列方向的半导体存储器件中存在至少一个存储单元的单个α射线时,导致软错误。