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    • 92. 发明专利
    • Semiconductor memory device
    • 半导体存储器件
    • JP2007250020A
    • 2007-09-27
    • JP2006067989
    • 2006-03-13
    • Toshiba Corp株式会社東芝
    • HIRABAYASHI OSAMU
    • G11C11/419G11C11/413
    • G11C11/419G11C7/08G11C7/14G11C7/227H01L27/1104
    • PROBLEM TO BE SOLVED: To provide a semiconductor memory device in which timing of a signal activating a sense amplifier is optimized and high speed operation can be performed with wide range power source potentials. SOLUTION: The semiconductor memory device is provided with: a memory cell array 11 in which a plurality of static type memory cells constituted of MIS transistors are arranged; a sense amplifier circuit 15 amplifying data transferred to a bit line; a first dummy cell group DCN including a plurality of dummy cells which is constituted of MIS transistors and in which data is fixed; a dummy word line selecting the first dummy cell group DCN; a dummy bit line to which data of the first dummy cell group is transferred; a signal generating circuit 18 generating an activating signal activating the sense amplifier circuit 15; and a potential generating circuit 19 generating a source potential supplied to the first dummy cell group DCN; wherein the source potential is different from a power source potential. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种半导体存储器件,其中激活读出放大器的信号的定时被优化,并且可以以宽范围的电源电位执行高速操作。 解决方案:半导体存储器件设置有:存储单元阵列11,其中布置有由MIS晶体管构成的多个静态型存储单元; 读出放大器电路15,放大传送到位线的数据; 第一虚拟单元组DCN,包括由MIS晶体管构成的数据固定的多个虚设单元; 选择第一虚拟单元组DCN的虚拟字线; 传送第一虚拟单元组的数据的虚拟位线; 信号发生电路18产生激活读出放大器电路15的激活信号; 以及产生提供给第一虚拟单元组DCN的源极电位的电位发生电路19; 其中源电位不同于电源电位。 版权所有(C)2007,JPO&INPIT
    • 95. 发明专利
    • Semiconductor storage device
    • 半导体存储设备
    • JP2003323792A
    • 2003-11-14
    • JP2002128538
    • 2002-04-30
    • Mitsubishi Electric Corp三菱電機株式会社
    • ARAI KOJINAKASE YASUNOBU
    • G11C11/419G11C7/22G11C11/41H01L21/8244H01L27/11
    • G11C7/227G11C7/22G11C29/023G11C29/026G11C29/028G11C29/24G11C2207/2281G11C2207/229
    • PROBLEM TO BE SOLVED: To optimize the internal data readout timing by varying the electric potential of a dummy bit line at a high speed, independently of the structure of a memory cell array, in a semiconductor storage device.
      SOLUTION: Dummy cells (DC) aligned in a row direction with regular memory cells (MC) and having the same layout as the regular memory cells are arranged in rows and columns. A dummy bit line is disposed for each of the dummy memory cell columns (50a-50d), and a plurality of the dummy cells are simultaneously selected, when one word line is selected, so as to be connected to the corresponding dummy bit lines (DBLa-DBLd). The electric potential of these dummy bit lines is detected by a voltage detection circuit (52), and the timing for activating the sense amplifier (30) or the like is determined.
      COPYRIGHT: (C)2004,JPO
    • 要解决的问题:通过在半导体存储装置中独立于存储单元阵列的结构改变虚拟位线的高电位的电位来优化内部数据读出定时。 解决方案:以规则存储器单元(MC)在行方向上排列并具有与常规存储器单元相同布局的虚拟单元(DC)以行和列布置。 为每个虚拟存储单元列(50a-50d)设置虚拟位线,并且当选择一个字线时,同时选择多个虚设单元,以便连接到相应的虚拟位线( DBLa-DBLd)。 这些虚拟位线的电位由电压检测电路(52)检测,并且确定用于激活读出放大器(30)的定时等。 版权所有(C)2004,JPO