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    • 21. 发明专利
    • Semiconductor memory device
    • 半导体存储器件
    • JP2008258362A
    • 2008-10-23
    • JP2007098265
    • 2007-04-04
    • Grandis IncRenesas Technology Corpグランディス インコーポレイテッドGrandis,Inc.株式会社ルネサステクノロジ
    • KAWAGOE TOMOYA
    • H01L21/8246G11C11/15H01L27/105H01L43/08
    • PROBLEM TO BE SOLVED: To provide a small semiconductor memory device by reducing the size of a cell transistor by reducing switching current.
      SOLUTION: A semiconductor memory device having a memory cell array containing a plurality of magnetoresistive elements R01 and a plurality of switching elements comprises a digit line DL00 or the like. The plurality of magnetoresistive elements are connected to a source line SL00 and a bit line BL00 arranged substantially in parallel with each other. Data are written in the magnetoresistive element by an STT (Spin Torque Transfer) writing method. The plurality of switching elements are connected to the plurality of magnetoresistive elements in series, respectively. The plurality of switching elements are controlled by a word line WL4n arranged substantially vertically relative to the source line and the bit line. A digit line is adjacent to the magnetoresistive element so that a predetermined magnetic field is generated relative to the magnetoresistive element. The digit line is arranged substantially in parallel with the source line.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:通过降低开关电流来减小单元晶体管的尺寸来提供小型半导体存储器件。 解决方案:具有包含多个磁阻元件R01和多个开关元件的存储单元阵列的半导体存储器件包括数字线DL00等。 多个磁阻元件连接到基本上彼此平行布置的源极线SL00和位线BL00。 通过STT(自旋转矩转移)写入方式将数据写入磁阻元件。 多个开关元件分别连接到多个磁阻元件。 多个开关元件由相对于源极线和位线基本垂直布置的字线WL4n控制。 数字线与磁阻元件相邻,从而相对于磁阻元件产生预定的磁场。 数字线基本上与源极线平行地布置。 版权所有(C)2009,JPO&INPIT
    • 22. 发明专利
    • Semiconductor memory device
    • 半导体存储器件
    • JP2008135119A
    • 2008-06-12
    • JP2006320520
    • 2006-11-28
    • Grandis IncRenesas Technology Corpグランディス インコーポレイテッドGrandis,Inc.株式会社ルネサステクノロジ
    • KAWAGOE TOMOYA
    • G11C11/15H01L21/8246H01L27/105H01L43/08
    • PROBLEM TO BE SOLVED: To provide a semiconductor memory device capable of extending an output voltage range without deteriorating characteristics of a sense amplifier circuit.
      SOLUTION: The semiconductor memory device is equipped with: a plurality of magneto-resistance elements Rx0, Rx1 respectively connected to bit lines BLx0, BLx1; a plurality of reference resistors Rmin, Rmax respectively connected to bit lines BL_Bx0, BL_Bx1; and the sense amplifier circuit 10. The magneto-resistance elements Rx0, Rx1 accumulate binary data. The reference resistors Rmin, Rmax are used for generating a reference resistance value Rref. The sense amplifier 10 includes N type transistors 28a-31a, 28b-31b which respectively make currents IA-ID flowing on each bit line to branch when the data are read out from the magneto-resistance elements Rx0, Rx1, and join respective branched currents with a current flowing on the corresponding bit line different from the bit lines whereon respective branched currents flow.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 解决的问题:提供能够延长输出电压范围而不劣化读出放大器电路的特性的半导体存储器件。 解决方案:半导体存储器件配备有分别连接到位线BLx0,BLx1的多个磁阻元件Rx0,Rx1; 分别连接到位线BL_Bx0,BL_Bx1的多个参考电阻器Rmin,Rmax; 和读出放大器电路10.磁阻元件Rx0,Rx1累积二进制数据。 参考电阻Rmin,Rmax用于产生参考电阻值Rref。 读出放大器10包括N型晶体管28a-31a,28b-31b,它们在从磁阻元件Rx0,Rx1读出数据时分别使每个位线上流动的电流IA-ID分支,并连接相应的分支电流 电流流过不同于相应分支电流流动的位线的相应位线。 版权所有(C)2008,JPO&INPIT
    • 23. 发明专利
    • Driver circuit and semiconductor memory incorporating it
    • 驱动电路和半导体存储器
    • JP2008097666A
    • 2008-04-24
    • JP2006275415
    • 2006-10-06
    • Grandis IncRenesas Technology Corpグランディス インコーポレイテッドGrandis,Inc.株式会社ルネサステクノロジ
    • KAWAGOE TOMOYA
    • G11C11/15
    • PROBLEM TO BE SOLVED: To secure a sufficient writing period when writing data and to reduce erroneous writing when reading data without particularly controlling the timing.
      SOLUTION: This driver circuit for a semiconductor memory having magnetoresistive elements connected to bit lines BLix (i= 0, 1, ..., m, ..., M; x=0, 1) has a logic circuit to make predetermined logic calculations for the voltages on the row select line CSL and data writing control lines BFPx, BFNx (x=0, 1) and to output a pair of control circuits showing this logic calculation result, and a P-type transistor P1 and an N-type transistor N1 connected in series between the power source voltage VDD2 and the ground voltage Vgnd and to generate the control voltages of the bit line BLix (i= 0, 1, ..., m, ..., M; x=0, 1) based on the pair of control signals from the logic circuit.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了在写入数据时确保足够的写入周期,并且在不特别控制定时的情况下读取数据时减少错误写入。 解决方案:具有连接到位线BLix(i = 0,1,...,m,...,M; x = 0,1)的磁阻元件的半导体存储器的该驱动电路具有逻辑电路 对行选择线CSL和数据写入控制线BFPx,BFNx(x = 0,1)上的电压进行预定的逻辑计算,并输出显示该逻辑计算结果的一对控制电路,以及P型晶体管P1和 串联连接在电源电压VDD2和接地电压Vgnd之间的N型晶体管N1,并产生位线BLix(i = 0,1,...,m,...,M; x = 0,1),基于来自逻辑电路的一对控制信号。 版权所有(C)2008,JPO&INPIT