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    • 12. 发明授权
    • Four F-squared gapless dual layer bitline DRAM array architecture
    • 四个F平方无间隙双层位线DRAM阵列架构
    • US06282113B1
    • 2001-08-28
    • US09408349
    • 1999-09-29
    • John K. DeBrosse
    • John K. DeBrosse
    • G11C506
    • G11C5/063G11C7/18G11C11/4097Y10S257/907
    • A semiconductor device having a compact folded bitline architecture. Bitlines for a memory cell array arranged into bitline pairs constituting, when in use, a selected bitline and its complement. The selected bitline and its complement are adjacent in upper and lower levels, and exchange levels at selected breakpoints in the lower level bitline. The breakpoints are determined so as to establish a diagonally-oriented pattern of “twist regions” across the array. Adjacent bitline pairs exchange levels in alternating twist regions. The upper bitlines are positioned at a predetermined angle, relative to the lower bitlines, in selected intervals between the twist regions. The predetermined angle introduces an offset between the upper bitlines and their associated complement lower bitlines as the upper bitlines enter twist regions to exchange levels. The diagonal orientation of the twist regions, alternating pattern of breakpoints, and offsets eliminate gaps in the memory array which would otherwise be introduced in the twist regions, providing for enhanced cell density and a minimum cell area of approximately 4F2.
    • 具有紧凑折叠位线架构的半导体器件。 存储单元阵列的位线布置成位线对,在使用时构成选定的位线及其补码。 所选择的位线及其补码在上下位置相邻,并且在较低级别位线中的选定断点处的交换水平。 确定断点以便在整个阵列中建立“扭转区域”的对角线定向图案。 相邻的位线对交替扭转区域交换水平。 在扭转区域之间以选定的间隔相对于下位线将上位线定位在预定角度。 当上位线进入扭转区域以交换电平时,预定角度在上位线及其相关联的补码下位线之间引入偏移。 扭转区域的对角方向,断点的交替模式和偏移量消除了存储器阵列中的间隙,否则将在引导区域中引入,从而提供增强的单元密度和约4F2的最小单元面积。
    • 13. 发明授权
    • DRAM signal margin test method
    • DRAM信号余量测试方法
    • US5610867A
    • 1997-03-11
    • US535446
    • 1995-09-28
    • John K. DeBrosseToshiaki KirihataHing Wong
    • John K. DeBrosseToshiaki KirihataHing Wong
    • G11C11/401G11C11/409G11C11/4091G11C29/50G11C7/00G11C29/00
    • G11C11/4091G11C29/50G06F2201/81G11C11/401
    • In the Preferred embodiment of the present invention, a bit line pair is coupled through a pair of high-resistance pass gates to a sense amp. During sense, the high-resistance pass gates act in conjunction with the charge stored on the bit line pair as, effectively, a high-resistance passive load for the sense amp. A control circuit selectively switches on and off bit line equalization coincident with selectively passing either the equalization voltage or set voltages to the sense amp and an active sense amp load. Further, after it is set, the sense amp is selectively connected to LDLs through low-resistance column select pass gates. Therefore, the sense amp quickly discharges one of the connected LDL pair while the bit line voltage remains essentially unchanged. Thus, data is passed from the sense amp to a second sense amplifier and off chip. After data is passed to the LDLs, the control circuit enables the active sense amp load to pull the sense amp high side to a full up level. Additionally, because the control circuit uses the equalization voltage to disable the sense amp, cell signal margin may be tested in a new way. Instead of varying the sense amp reference voltage, as in prior art signal margin tests, cell signal margin is tested by varying cell signal. V.sub.S may be selected to determine both a high and a low signal margin.
    • 在本发明的优选实施例中,位线对通过一对高电阻通过门耦合到感测放大器。 在感测期间,高电阻通过门与存储在位线对上的电荷一起作为有效地用于感测放大器的高电阻无源负载。 控制电路选择性地接通和断开位线均衡,与选择性地将均衡电压或设定电压通过感测放大器和主动感测放大器负载相一致。 此外,在设置之后,感测放大器通过低电阻列选择通孔选择性地连接到LDL。 因此,当位线电压基本保持不变时,感测放大器会快速放电连接的LDL对之一。 因此,数据从感测放大器传递到第二读出放大器和芯片外。 数据传送到LDL后,控制电路使主动感测放大器负载将感测放大器的高端拉到一个完整的电平。 此外,由于控制电路使用均衡电压来禁用读出放大器,所以可以以新的方式测试单元信号余量。 代替检测放大器参考电压,如现有技术的信号余量测试,通过改变单元信号来测试单元信号余量。 可以选择VS来确定高和低信号余量。
    • 15. 发明授权
    • Spin-torque transfer magneto-resistive memory architecture
    • 自旋扭矩传递磁阻存储器架构
    • US08446757B2
    • 2013-05-21
    • US12858879
    • 2010-08-18
    • John K. DeBrosseYutaka Nakamura
    • John K. DeBrosseYutaka Nakamura
    • G11C11/00
    • G11C11/16G11C11/1655G11C11/1659G11C11/1673G11C11/1675G11C11/1693Y10S977/935
    • A memory array device comprising a first memory cell comprising a first magnetic tunnel junction device having a first terminal connected to a first bit line (BLTE) and a second terminal, and a first field effect transistor (FET) having a source terminal connected to a second bit line (BLC), a gate terminal connected to a word line (WL), and a drain terminal connected to the second terminal of the first magnetic tunnel junction device, and a second memory cell comprising, a second magnetic tunnel junction device having a first terminal connected to a third bit line (BLT0) and a second terminal, and a second field effect transistor (FET) having a source terminal connected to the second bit line (BLC), a gate terminal connected to the word line (WL), and a drain terminal connected to the second terminal of the second magnetic tunnel junction device.
    • 一种存储器阵列器件,包括第一存储器单元,该第一存储器单元包括具有连接到第一位线(BLTE)的第一端子和第二端子的第一磁性隧道结器件,以及具有与源极端子连接的第一场效应晶体管 第二位线(BLC),连接到字线(WL)的栅极端子和连接到第一磁性隧道结装置的第二端子的漏极端子,以及第二存储单元,其包括:第二磁性隧道结装置, 连接到第三位线(BLT0)和第二端子的第一端子和具有连接到第二位线(BLC)的源极端子的第二场效应晶体管(FET),连接到字线(WL)的栅极端子 )和连接到第二磁性隧道结装置的第二端子的漏极端子。
    • 16. 发明申请
    • Spin-Torque Transfer Magneto-Resistive Memory Architecture
    • 自旋转移磁阻存储器架构
    • US20120294071A1
    • 2012-11-22
    • US13559672
    • 2012-07-27
    • John K. DeBrosseYutaka Nakamura
    • John K. DeBrosseYutaka Nakamura
    • G11C11/16
    • G11C11/16G11C11/1655G11C11/1659G11C11/1673G11C11/1675G11C11/1693Y10S977/935
    • A system includes a processor and a memory array connected to the processor comprising a first memory cell comprising a first magnetic tunnel junction device having a first terminal connected to a first bit line and a second terminal, and a first field effect transistor having a source terminal connected to a second bit line, a gate terminal connected to a word line, and a drain terminal connected to the second terminal of the first magnetic tunnel junction device, and a second memory cell comprising a second magnetic tunnel junction device having a first terminal connected to a third bit line and a second terminal, and a second field effect transistor having a source terminal connected to the second bit line, a gate terminal connected to the word line, and a drain terminal connected to the second terminal of the second magnetic tunnel junction device.
    • 一种系统包括处理器和连接到处理器的存储器阵列,该存储器阵列包括第一存储器单元,该第一存储器单元包括具有连接到第一位线的第一端子和第二端子的第一磁性隧道结器件,以及具有源极端子的第一场效应晶体管 连接到第二位线,连接到字线的栅极端子和连接到第一磁性隧道结装置的第二端子的漏极端子,以及包括第二磁性隧道结装置的第二存储单元,第二磁性隧道结装置具有第一端子连接 至第三位线和第二端子,以及第二场效应晶体管,其源极端子连接到第二位线,连接到字线的栅极端子和连接到第二磁通道的第二端子的漏极端子 连接装置。
    • 17. 发明申请
    • Spin-Torque Transfer Magneto-Resistive Memory Architecture
    • 自旋转移磁阻存储器架构
    • US20120044754A1
    • 2012-02-23
    • US12858879
    • 2010-08-18
    • John K. DeBrosseYutaka Nakamura
    • John K. DeBrosseYutaka Nakamura
    • G11C11/14
    • G11C11/16G11C11/1655G11C11/1659G11C11/1673G11C11/1675G11C11/1693Y10S977/935
    • A memory array device comprising a first memory cell comprising a first magnetic tunnel junction device having a first terminal connected to a first bit line (BLTE) and a second terminal, and a first field effect transistor (FET) having a source terminal connected to a second bit line (BLC), a gate terminal connected to a word line (WL), and a drain terminal connected to the second terminal of the first magnetic tunnel junction device, and a second memory cell comprising, a second magnetic tunnel junction device having a first terminal connected to a third bit line (BLT0) and a second terminal, and a second field effect transistor (FET) having a source terminal connected to the second bit line (BLC), a gate terminal connected to the word line (WL), and a drain terminal connected to the second terminal of the second magnetic tunnel junction device.
    • 一种存储器阵列器件,包括第一存储器单元,该第一存储器单元包括具有连接到第一位线(BLTE)的第一端子和第二端子的第一磁性隧道结器件,以及具有与源极端子连接的第一场效应晶体管 第二位线(BLC),连接到字线(WL)的栅极端子和连接到第一磁性隧道结装置的第二端子的漏极端子,以及第二存储单元,其包括:第二磁性隧道结装置, 连接到第三位线(BLT0)和第二端子的第一端子和具有连接到第二位线(BLC)的源极端子的第二场效应晶体管(FET),连接到字线(WL)的栅极端子 )和连接到第二磁性隧道结装置的第二端子的漏极端子。
    • 19. 发明申请
    • APPARATUS AND METHOD FOR IMPLEMENTING PRECISE SENSING OF PCRAM DEVICES
    • 用于实施PCRAM设备精密感测的装置和方法
    • US20090086534A1
    • 2009-04-02
    • US11865134
    • 2007-10-01
    • John K. DeBrosseThomas M. MaffittMark C.H. Lamorey
    • John K. DeBrosseThomas M. MaffittMark C.H. Lamorey
    • G11C11/00G11C7/00G11C7/10
    • G11C29/02G11C7/062G11C7/067G11C13/0004G11C13/004G11C29/026G11C29/028G11C2013/0054
    • A precision sense amplifier apparatus includes a current source configured to introduce an adjustable reference current through a reference leg; a current mirror configured to mirror the reference current to a data leg, the data leg selectively coupled to a programmable resistance memory element; an active clamping device coupled to the data leg, and configured to clamp a fixed voltage across the memory element, thereby establishing a fixed current sinking capability thereof; and a differential sense amplifier having a first input thereof coupled to the data leg and a second input thereof coupled to the reference leg; wherein an output of the differential sense amplifier assumes a first logic state whenever the reference current is less than the fixed current sinking capability of the memory element, and assumes a second logic state whenever the reference current exceeds the fixed current sinking capability.
    • 精密读出放大器装置包括:电流源,被配置为通过参考支路引入可调参考电流; 配置为将参考电流镜像到数据支路的电流镜,所述数据支路选择性地耦合到可编程电阻存储元件; 耦合到所述数据支脚的有源钳位装置,并且被配置为在所述存储元件上钳位固定电压,由此建立其固定的电流吸收能力; 以及差分读出放大器,其具有耦合到所述数据支路的第一输入端和耦合到所述基准支路的第二输入端; 其中每当所述参考电流小于所述存储元件的固定电流吸收能力时,所述差分读出放大器的输出呈现第一逻辑状态,并且每当所述参考电流超过所述固定电流吸收能力时,所述差分读出放大器的输出呈现第二逻辑状态。