Device and method for nullifying offset voltages in operational amplifiers
    3.
    发明申请
    Device and method for nullifying offset voltages in operational amplifiers 有权
    用于使运算放大器中的失调电压无效的装置和方法

    公开(公告)号:US20050168278A1

    公开(公告)日:2005-08-04

    申请号:US10853421

    申请日:2004-05-25

    申请人: Kyu Chung

    发明人: Kyu Chung

    IPC分类号: H03F3/34 H03F1/02 H03F3/45

    CPC分类号: H03F3/45775 H03F3/45977

    摘要: A device and method for nullifying an offset voltage in an operational amplifier, the operational amplifier having a first input, a second input, an output, and a first resistor connected between the output and the first input, the device comprising: an adjustable resistor electrically connected to the first resistor, forming a first resistor network having a first feedback ratio at the first input of the operational amplifier; a comparator having a first input and a second input, the first input electrically connected to the output of the operational amplifier through a second resistor; a third resistor connected to the second resistor, forming a second resistor network having a second feedback ratio at the first input of the comparator; and an offset measurer electrically connected to the comparator and the adjustable resistor for measuring an output value of the comparator and for adjusting the adjustable resistor based on the measured output value.

    摘要翻译: 一种用于使运算放大器中的偏移电压无效的装置和方法,所述运算放大器具有连接在所述输出端和所述第一输入端之间的第一输入端,第二输入端,输出端和第一电阻器,所述器件包括:电可调电阻器 连接到第一电阻器,形成在运算放大器的第一输入处具有第一反馈比的第一电阻器网络; 具有第一输入和第二输入的比较器,所述第一输入通过第二电阻电连接到所述运算放大器的输出; 连接到所述第二电阻器的第三电阻器,形成在比较器的第一输入处具有第二反馈比的第二电阻器网络; 以及偏置测量器,其电连接到所述比较器和所述可调电阻器,用于测量所述比较器的输出值并且用于基于所测量的输出值来调节所述可调电阻器。

    Source driver circuits and methods providing reduced power consumption for driving flat panel displays
    6.
    发明申请
    Source driver circuits and methods providing reduced power consumption for driving flat panel displays 有权
    源驱动器电路和方法,可降低驱动平板显示器的功耗

    公开(公告)号:US20050088394A1

    公开(公告)日:2005-04-28

    申请号:US10880118

    申请日:2004-06-29

    申请人: Kyu Chung

    发明人: Kyu Chung

    IPC分类号: G09G3/36

    摘要: Circuits and methods are provided for driving flat panel displays (e.g., a liquid crystal display (LCD)), which provide reduced power consumption for driving data lines of flat panels displays. Source driving circuits and methods for driving data lines use both intermediate reference voltages and boosted driving voltages in each driving cycle (as opposed to entirely using boosted driving voltages) to reduce power consumption and provide charge recycling.

    摘要翻译: 提供了用于驱动平板显示器(例如,液晶显示器(LCD))的电路和方法,其提供用于驱动平板显示器的数据线的降低的功耗。 用于驱动数据线的源驱动电路和方法在每个驱动周期中使用中间参考电压和升压驱动电压(与完全使用升压驱动电压相反)来降低功耗并提供电荷回收。

    Circuits and methods for driving flat panel displays
    10.
    发明申请
    Circuits and methods for driving flat panel displays 失效
    用于驱动平板显示器的电路和方法

    公开(公告)号:US20050057481A1

    公开(公告)日:2005-03-17

    申请号:US10704075

    申请日:2003-11-07

    申请人: Kyu Chung

    发明人: Kyu Chung

    摘要: Circuits and methods for driving gates lines of a flat panel display, wherein gate driver circuit architectures provide compact designs that enable smaller chip sizes for gate driver ICs. In one aspect, a semiconductor integrated gate driver IC comprises a plurality of gate driver circuits, wherein each gate driver circuit drives a corresponding gate line of a display, and a level shifter circuit, for generating a precharge control signal for the gate driver circuits. Each gate driver circuit comprises a line decoder for decoding a gate line control signal and generating a decoded gate line control signal and a precharge circuit for precharging a gate driver turn-on voltage in response to the precharge control signal before activating the gate line. During a driving phase, the precharged gate driver turn-on voltage is discharged when the gate line is activated in response to the decoded gate line control signal, whereas the precharged gate driver turn-on voltage is maintained when the gate line is not activated in response to the decoded gate line control signal.

    摘要翻译: 用于驱动平板显示器的栅极线的电路和方法,其中栅极驱动器电路架构提供了使栅极驱动器IC更小的芯片尺寸的紧凑设计。 一方面,半导体集成栅极驱动器IC包括多个栅极驱动器电路,其中每个栅极驱动器电路驱动显示器的相应栅极线,以及电平移位器电路,用于为栅极驱动器电路产生预充电控制信号。 每个栅极驱动器电路包括用于对栅极线控制信号进行解码并产生解码栅极线控制信号的线路解码器和用于在激活栅极线之前响应于预充电控制信号对栅极驱动器导通电压进行预充电的预充电电路。 在驱动阶段期间,当栅极线响应于解码的栅极线控制信号被激活时,预充电栅极驱动器接通电压被放电,而当栅极线未被激活时,保持预充电栅极驱动器接通电压 响应于解码的栅极线控制信号。