Frequency dividing circuit, power supply circuit and display device
    1.
    发明授权
    Frequency dividing circuit, power supply circuit and display device 有权
    分频电路,电源电路和显示装置

    公开(公告)号:US07504869B2

    公开(公告)日:2009-03-17

    申请号:US11265076

    申请日:2005-11-03

    CPC classification number: H02M3/07 G09G3/3696 G09G2330/028 H03B19/14

    Abstract: A level shifter and a charge pump circuit are added, among cascade-connected unit frequency dividing circuits forming a frequency dividing circuit, to the unit frequency dividing circuit in the first stage. The charge pump circuit boosts an input voltage based on a dot clock signal, and supplies the booster voltage to the unit frequency dividing circuit in the first stage. The unit frequency dividing circuit in the first stage, which is driven by the booster voltage, attains an improved current driving capability. The improved current driving capability of the unit frequency dividing circuit in the first stage to which the dot clock signal of high frequency is input leads to a widened operating margin of the frequency dividing circuit.

    Abstract translation: 在形成分频电路的级联连接单元分频电路中,将电平移位器和电荷泵电路加到第一级中的单位分频电路。 电荷泵电路基于点时钟信号来提高输入电压,并将升压电压提供给第一级中的单位分频电路。 由升压电压驱动的第一级中的单位分频电路获得改善的电流驱动能力。 在输入高频点时钟信号的第一级中的单位分频电路的改进的电流驱动能力导致分频电路加宽的工作裕度。

    Frequency dividing circuit, power supply circuit and display device

    公开(公告)号:US20060208775A1

    公开(公告)日:2006-09-21

    申请号:US11265076

    申请日:2005-11-03

    CPC classification number: H02M3/07 G09G3/3696 G09G2330/028 H03B19/14

    Abstract: A level shifter and a charge pump circuit are added, among cascade-connected unit frequency dividing circuits forming a frequency dividing circuit, to the unit frequency dividing circuit in the first stage. The charge pump circuit boosts an input voltage based on a dot clock signal, and supplies the booster voltage to the unit frequency dividing circuit in the first stage. The unit frequency dividing circuit in the first stage, which is driven by the booster voltage, attains an improved current driving capability. The improved current driving capability of the unit frequency dividing circuit in the first stage to which the dot clock signal of high frequency is input leads to a widened operating margin of the frequency dividing circuit.

    IMAGE DISPLAY DEVICE COMPRISING FIRST AND SECOND GATE DRIVER CIRCUITS FORMED ON SINGLE SUBSTRATE
    3.
    发明申请
    IMAGE DISPLAY DEVICE COMPRISING FIRST AND SECOND GATE DRIVER CIRCUITS FORMED ON SINGLE SUBSTRATE 审中-公开
    包含在单个基板上形成的第一和第二栅极驱动电路的图像显示装置

    公开(公告)号:US20080012842A1

    公开(公告)日:2008-01-17

    申请号:US11742246

    申请日:2007-04-30

    Inventor: Seiichirou Mori

    CPC classification number: G09G3/3677 G09G2310/0283

    Abstract: A first gate driver circuit scans gate lines in one direction, and has its gate pulse output stages capable of having high impedance in response to an external signal. A second gate driver circuit scans gate lines in one but different direction from the first gate driver circuit, and has its gate pulse output stages capable of having high impedance in response to the external signal. When one of the first and second gate driver circuits is operating under the control of the external signal, the respective gate pulse output stages of the other gate driver circuit have high impedance. Consequently, a plurality of shifting techniques such as a scan direction switching function of gate lines in an image display device including a-Si gate driver circuits can be implemented.

    Abstract translation: 第一栅极驱动器电路沿一个方向扫描栅极线,并且其栅极脉冲输出级能够响应于外部信号而具有高阻抗。 第二栅极驱动器电路以与第一栅极驱动器电路不同的方向扫描栅极线,并且其栅极脉冲输出级能够响应于外部信号而具有高阻抗。 当第一和第二栅极驱动电路之一在外部信号的控制下工作时,另一个栅极驱动电路的各个栅极脉冲输出级具有高阻抗。 因此,可以实现多个移位技术,例如包括-S-Si栅极驱动器电路的图像显示装置中的栅极线的扫描方向切换功能。

    Transmissive liquid crystal display panel and liquid crystal display device using the same
    4.
    发明申请
    Transmissive liquid crystal display panel and liquid crystal display device using the same 审中-公开
    透射式液晶显示面板和使用其的液晶显示装置

    公开(公告)号:US20060022921A1

    公开(公告)日:2006-02-02

    申请号:US11179742

    申请日:2005-07-13

    Abstract: In a transmissive liquid crystal display device, a liquid crystal display panel includes an image display portion and a light-receiving window portion. When the ambient light is sufficient, a backlight is turned off and the light-receiving window portion is set to a light-transmitting state, to take the external light into the backside of the liquid crystal display panel so as to display an image. When the ambient light is insufficient, the backlight is turned on and the light-receiving window portion is set to a light-blocking state, to display the image with the light from the backlight. Thus, the device configuration is simplified compared to the case of opening/closing a light-receiving window by using a movable blocking plate.

    Abstract translation: 在透射型液晶显示装置中,液晶显示面板包括图像显示部和受光窗部。 当环境光足够时,背光被关闭,并且光接收窗口部分被设置为透光状态,以将外部光进入到液晶显示面板的背面以便显示图像。 当环境光不足时,背光被打开,并且光接收窗口部分被设置为遮光状态,以用来自背光的光来显示图像。 因此,与通过使用可移动阻挡板打开/关闭受光窗口的情况相比,装置配置被简化。

    Current measuring circuit for measuring drive current to load
    5.
    发明授权
    Current measuring circuit for measuring drive current to load 失效
    用于测量驱动电流到负载的电流测量电路

    公开(公告)号:US06968249B2

    公开(公告)日:2005-11-22

    申请号:US10607296

    申请日:2003-06-27

    CPC classification number: G01R19/0092 G01R31/3008

    Abstract: When a voltage is supplied from a voltage supply terminal to a non-inverted input terminal of an operational amplifier, a voltage equal to the supply voltage is input to an inverted input terminal and also to a voltage apply terminal for a load. When PNP transistors constituting a current mirror turn on in response to the applied voltage, a source current flows through one of the PNP transistors to the load, and a mirror current of the source current flows through the other of the PNP transistors to a current measuring terminal. The current driven to the load can be obtained by measuring the mirror current with an amperemeter.

    Abstract translation: 当从电压供给端子向运算放大器的非反相输入端子提供电压时,将等于电源电压的电压输入到反相输入端子以及负载用电压端子。 当构成电流镜的PNP晶体管响应于所施加的电压而导通时,源极电流流过PNP晶体管中的一个到负​​载,并且源极电流的反射镜电流流过另一PNP晶体管至电流测量 终奌站。 驱动负载的电流可以通过用电流表测量镜电流来获得。

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