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    • 1. 发明授权
    • Semiconductor memory device and method for executing shift redundancy operation
    • 用于执行移位冗余操作的半导体存储器件和方法
    • US07281155B1
    • 2007-10-09
    • US09359767
    • 1999-07-22
    • Satoshi EtoMasato MatsumiyaToshimi IkedaYuki IshiiAkira KikutakeKuninori Kawabata
    • Satoshi EtoMasato MatsumiyaToshimi IkedaYuki IshiiAkira KikutakeKuninori Kawabata
    • H02H3/05
    • G11C29/78
    • A semiconductor memory device having a shift redundancy function includes a switch circuit for changeably connecting a plurality of decode signal lines decoding an address signal to a plurality of selecting lines and redundancy selecting lines, and executes a switch operation for shifting at least one of a plurality of decode lines in the direction of a first redundancy selecting line positioned at one of the ends among a plurality of selecting lines or a second switch operation for shifting at least one of the decode lines in the direction of a second redundancy selecting line positioned at the other end among the selecting lines or both of the first and second operations when any fault occurs in a plurality of selecting lines. The semiconductor memory device preferably includes two or more first redundancy selecting lines positioned at one of the ends of a plurality of selecting lines, two or more second redundancy selecting lines positioned at the other end, and first and second switch units disposed in two stages. When any fault selecting line occurs, the first switch unit executes a first switch operation for shifting at least one of the decode signal lines in the direction of the first redundancy selecting line or a second switch operation for shifting the same in the direction of the second redundancy selecting line, or the second switch unit executes a third switch operation for shifting at least one decode signal line in the direction of the first redundancy selecting line or a fourth switch operation for shifting it in the direction of the second redundancy selecting line.
    • 具有移位冗余功能的半导体存储器件包括用于将解码地址信号的多条解码信号线与多条选择线和冗余选择线可变地连接的开关电路,并且执行用于移位多个选择线和冗余选择线中的至少一个的切换操作 在位于多个选择线中的一端的第一冗余选择线的方向上的解码线的第二切换操作或用于沿着位于所述多个选择线的第二冗余选择线的方向移位至少一条解码线的第二切换操作 在多个选择线中发生任何故障时,选择线中的另一端或第一和第二操作两者。 半导体存储器件优选地包括位于多个选择线的一端的两个或更多个第一冗余选择线,以及位于另一端的两个或更多个第二冗余选择线以及分两个阶段布置的第一和第二开关单元。 当发生任何故障选择线时,第一开关单元执行第一开关操作,用于沿第一冗余选择线的方向移位至少一个解码信号线,或者执行第二开关操作,以使其在第二冗余选择线的方向上移位 冗余选择线或者第二开关单元执行用于在第一冗余选择线的方向上移位至少一个解码信号线的第三开关操作或者用于在第二冗余选择线的方向上移位的第四开关操作。
    • 8. 发明授权
    • Semiconductor memory device
    • 半导体存储器件
    • US6052301A
    • 2000-04-18
    • US272296
    • 1999-03-19
    • Toshimi IkedaKuninori KawabataMasato Takita
    • Toshimi IkedaKuninori KawabataMasato Takita
    • H01L27/10G11C7/18G11C8/14H01L21/8242H01L27/108G11C5/06
    • H01L27/108G11C7/18G11C8/14
    • According to the present invention, the main word lines arranged in a row direction have a linear pattern shape, and in the region where sub word decoder circuits are formed, the pattern of the main word lines has a shape whereby the pattern branches and splits into a plurality of lines and then reconverges, in the direction of the row. In the region where the line splits, relatively small island-shaped patterns of the conducting layer are located, forming nodes which have a difference electric potential from the main word lines. The main word lines are constituted by a first metal conducting layer, similarly to the prior art. In other words, small island-shaped metal layer patterns, which are electrically different from the main word lines are formed inside the conducting metal layer pattern constituting the main word lines, similarly to island formed in the middle of a river, for example.
    • 根据本发明,排列在行方向上的主字线具有线状图案形状,在形成子字译码器电路的区域中,主字线的图形具有图案分支并分成 多行,然后在行的方向上重新转换。 在分割线的区域中,导电层的相对较小的岛状图形被定位,形成与主字线具有差电位的节点。 与现有技术类似,主字线由第一金属导电层构成。 换句话说,与构成主字线的导电金属层图案的内部形成有与主字线电性不同的小岛状金属层图案,与形成在河道中部的岛类似。