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    • 7. 发明申请
    • MONITORING NEGATIVE BIAS TEMPERATURE INSTABILITY (NBTI) AND/OR POSITIVE BIAS TEMPERATURE INSTABILITY (PBTI)
    • 监测负偏差温度不稳定性(NBTI)和/或正偏差温度不稳定性(PBTI)
    • US20120182079A1
    • 2012-07-19
    • US13009649
    • 2011-01-19
    • Jae-Joon KimRahul M. Rao
    • Jae-Joon KimRahul M. Rao
    • H03K3/03G06F17/50
    • H03K3/0315G06F2217/80
    • A ring oscillator circuit for measurement of negative bias temperature instability effect and/or positive bias temperature instability effect includes a ring oscillator having first and second rails, and an odd number (at least 3) of repeating circuit structures. Each of the repeating circuit structures in turn includes an input terminal and an output terminal; a first p-type transistor having a gate, a first drain-source terminal coupled to the first rail, and a second drain source terminal selectively coupled to the output terminal; a first n-type transistor having a gate, a first drain-source terminal coupled to the second rail, and a second drain source terminal selectively coupled to the output terminal; and repeating-circuit-structure control circuitry. The ring oscillator circuit also includes a voltage supply and control block.
    • 用于测量负偏压温度不稳定效应和/或正偏置温度不稳定效应的环形振荡器电路包括具有第一和第二导轨的环形振荡器和奇数(至少3个)重复电路结构。 每个重复电路结构又包括输入端和输出端; 具有栅极的第一p型晶体管,耦合到第一导轨的第一漏极 - 源极和选择性地耦合到输出端的第二漏极源极; 具有栅极的第一n型晶体管,耦合到第二导轨的第一漏极 - 源极和选择性地耦合到输出端的第二漏极端子; 和重复电路结构控制电路。 环形振荡器电路还包括电压供应和控制块。
    • 8. 发明授权
    • Electronic circuit for measurement of transistor variability and the like
    • 用于测量晶体管变化性的电子电路等
    • US08004305B2
    • 2011-08-23
    • US12542184
    • 2009-08-17
    • Keith A. JenkinsJae-Joon KimRahul M. Rao
    • Keith A. JenkinsJae-Joon KimRahul M. Rao
    • G01R31/02
    • G01R31/2621
    • An electronic circuit includes an output terminal and at least a first measuring FET. The second drain-source terminals of a plurality of FETS to be tested are interconnected with the first drain-source terminal of the first measuring FET and the output terminal. The second drain-source terminal of the first measuring FET is interconnected with a first biasing terminal. The first drain-source terminals of the FETS to be tested are interconnected with a second biasing terminal. A state machine is coupled to the gates of the FETS to be tested and the gate of the first measuring FET. The state machine is configured to energize the gate of the first measuring FET and to sequentially energize the gates of the FETS to be tested, so that an output voltage appears on the output terminal. Circuitry to compare the output voltage to a reference value is also provided. The gate of the first measuring field effect transistor is energized; the gates of the field effect transistors to be tested are sequentially energized, whereby an output voltage appears on the output terminal; and the output voltage is compared to the reference value.
    • 电子电路包括输出端子和至少第一测量FET。 待测试的多个FET的第二漏极 - 源极端子与第一测量FET和输出端子的第一漏极 - 源极端子互连。 第一测量FET的第二漏极 - 源极端子与第一偏置端子互连。 要测试的FETS的第一漏极 - 源极端子与第二偏置端子互连。 状态机耦合到要测试的FETs的栅极和第一测量FET的栅极。 状态机被配置为对第一测量FET的栅极通电并且顺序地激励要测试的FETS的栅极,使得输出电压出现在输出端子上。 还提供了将输出电压与参考值进行比较的电路。 第一测量场效应晶体管的栅极通电; 要测试的场效应晶体管的栅极依次通电,从而输出电压出现在输出端上; 并将输出电压与参考值进行比较。
    • 9. 发明授权
    • Independent-gate controlled asymmetrical memory cell and memory using the cell
    • 独立门控制的非对称存储单元和使用单元的存储器
    • US07787285B2
    • 2010-08-31
    • US12140366
    • 2008-06-17
    • Ching-Te ChuangJae-Joon KimKeunwoo Kim
    • Ching-Te ChuangJae-Joon KimKeunwoo Kim
    • G11C11/00
    • G11C11/412
    • Techniques are provided for employing independent gate control in asymmetrical memory cells. A memory circuit, such as an SRAM circuit, can include a number of bit line structures, a number of word line structures that intersect the bit line structures to form a number of cell locations, and a number of asymmetrical memory cells located at the cell locations. Each of the asymmetrical cells can be selectively coupled to a corresponding one of the bit line structures under control of a corresponding one of the word line structures. Each of the cells can include a number of field effect transistors (FETS), and at least one of the FETS can be configured with separately biased front and back gates. One gate can be biased separately from the other gate in a predetermined manner to enhance read stability of the asymmetrical cell.
    • 提供了在不对称存储单元中采用独立门控制的技术。 诸如SRAM电路的存储器电路可以包括多个位线结构,与位线结构相交以形成多个单元位置的多个字线结构以及位于单元的多个非对称存储单元 位置。 在对应的一个字线结构的控制下,每个非对称单元可以选择性地耦合到位线结构中的对应的一个。 每个单元可以包括多个场效应晶体管(FETS),并且FETS中的至少一个可以被配置为单独偏置的前门和后门。 一个栅极可以以预定的方式与另一个栅极分开偏置,以增强不对称单元的读取稳定性。