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    • 6. 发明授权
    • Semiconductor device
    • 半导体器件
    • US06480425B2
    • 2002-11-12
    • US09820972
    • 2001-03-30
    • Kazumasa YanagisawaToshio SasakiSatoru NakanishiYoshihiko Yasu
    • Kazumasa YanagisawaToshio SasakiSatoru NakanishiYoshihiko Yasu
    • G11C700
    • G11C11/4091G11C5/025G11C7/065
    • A dynamic RAM includes sense amplifiers each formed of a latch circuit consisting of MOSFETs of a first and second conductivity types with the application of a first and second voltages to the sources thereof, respectively, and having a pair of input/output nodes corresponding to a first bit line pair which is connected with a number of dynamic memory cells, and further includes pairs of switching MOSFETs of the first conductivity type which connect selectively an input/output node pair of the latch circuits to a pair of second bit lines provided commonly to a plurality of the first bit line pair in response to the reception of the select signal. The switching MOSFETs have their threshold voltage set smaller in terms of absolute value than the threshold voltage of the MOSFETs of the first conductivity type of the latch circuits, and the select signal has its level of turning off the switching MOSFETs set greater in terms of absolute value than the first voltage with respect to the second voltage.
    • 动态RAM包括读出放大器,每个读出放大器分别由一个由第一和第二导电类型的MOSFET构成的锁存电路构成,并分别对其源极施加第一和第二电压,并具有一对输入/输出节点 第一位线对与多个动态存储单元连接,并且还包括成对的第一导电类型的开关MOSFET,其选择性地将锁存电路的输入/输出节点对连接到一对共同设置的第二位线 多个第一位线对响应于该选择信号的接收。 开关MOSFET的阈值电压设置为比第一导电类型的锁存电路的MOSFET的阈值电压的绝对值小,并且选择信号具有关闭开关MOSFET的电平,该开关MOSFET的绝对值设定得更大 相对于第二电压的第一电压值。