Pixel driving circuit and driving method thereof and display device

    公开(公告)号:US10140922B2

    公开(公告)日:2018-11-27

    申请号:US15507904

    申请日:2016-08-19

    Abstract: A pixel driving circuit and a driving method thereof, and a display device are provided. The pixel driving circuit includes input module, compensation module, drive module, light emitting module and control signal input module. The input module is configured to transmit a signal of a data voltage terminal to the compensation module under control of first gate signal terminal. The compensation module is configured to compensate for a threshold voltage of the drive module under control of the input module and a threshold voltage control terminal. The drive module is configured to drive the light emitting module to emit light under control of first control signal terminal. The control signal input module is configured to transmit a signal of second voltage terminal or third voltage terminal to the first control signal terminal under control of second control signal terminal and third control signal terminal.

    X-RAY FLAT PANEL DETECTOR AND X-RAY DIGITAL RADIOGRAPHY SYSTEM
    99.
    发明申请
    X-RAY FLAT PANEL DETECTOR AND X-RAY DIGITAL RADIOGRAPHY SYSTEM 有权
    X射线平板检测器和X射线数字放射系统

    公开(公告)号:US20160336373A1

    公开(公告)日:2016-11-17

    申请号:US15088177

    申请日:2016-04-01

    CPC classification number: H01L27/14663 G01T1/2018 G01T1/241 H01L27/14612

    Abstract: The present disclosure provides an X-ray flat panel detector including: a base substrate; thin film transistors (TFTs), a pixel electrode layer, photodiodes, a transparent electrode layer, and an X-ray conversion layer which are arranged on the base substrate; and an electric field application portion configured to generate an electric field, wherein the photodiodes are arranged in the electric field, and a moving direction of negative charges when visible light rays are converted to electrical signals by the photodiodes is substantially same as a direction of the electric field. In this detector, it is applied a direction of the electric field which is substantially same as the moving direction of negative charges in the photodiode, so that movement of holes and electrons of the photodiode may be accelerated under an influence of the electric field, and thus the electrical signal may promptly arrive at the pixel electrode. As a result, it is improved the quantum detection efficiency and the sensitivity of the X-ray flat panel detector.

    Abstract translation: 本公开提供了一种X射线平板检测器,包括:基底; 设置在基底基板上的薄膜晶体管(TFT),像素电极层,光电二极管,透明电极层和X射线转换层; 以及电场施加部,被配置为产生电场,其中所述光电二极管被布置在电场中,并且当可见光被所述光电二极管转换为电信号时,所述负电荷的移动方向基本上与所述电场的方向相同 电场。 在该检测器中,施加与光电二极管中的负电荷的移动方向基本相同的电场的方向,从而可以在电场的影响下加速光电二极管的空穴和电子的移动,并且 因此电信号可以迅速到达像素电极。 结果,提高了X射线平板检测器的量子检测效率和灵敏度。

    Boosting circuit, backlight driving circuit and backlight module
    100.
    发明授权
    Boosting circuit, backlight driving circuit and backlight module 有权
    升压电路,背光驱动电路和背光模组

    公开(公告)号:US09226360B2

    公开(公告)日:2015-12-29

    申请号:US14370187

    申请日:2013-03-29

    Abstract: A boosting circuit, a backlight driving circuit and a backlight module are provided. The boosting circuit comprises a boosting chip (U1), an energy-storage inductor (L1), a freewheeling diode (D1), a first capacitor (C1), and a current mirror unit (U2), wherein an input terminal of an inputting branch of the current mirror unit (U2) IS connected with the cathode of the freewheeling diode (D1), and an output terminal of the inputting branch is connected with the signal input terminal (Vin) of the boosting circuit through a first resistor (R1), an input terminal of an outputting branch of the current mirror unit (U2) IS connected with the cathode of the freewheeling diode (D1), an output terminal of the outputting branch is grounded through a second resistor (R2), an ungrounded terminal of the second resistor (R2) is connected with a signal feedback pin of the boosting chip. The boosting circuit realizes the tracking of changes of the input voltage by the output voltage under the precondition that parameters of respective elements are unchanged, and achieves the effect that a voltage difference between the output voltage and the input voltage is fixed.

    Abstract translation: 提供升压电路,背光驱动电路和背光模块。 升压电路包括升压芯片(U1),储能电感器(L1),续流二极管(D1),第一电容器(C1)和电流镜单元(U2),其中输入端 电流镜单元(U2)的分支IS与续流二极管(D1)的阴极连接,输入支路的输出端通过第一电阻器(R1)与升压电路的信号输入端(Vin)连接 ),与续流二极管(D1)的阴极连接的电流镜单元(U2)的输出支路的输入端子,输出支路的输出端子通过第二电阻器(R2)接地,未接地端子 的第二电阻器(R2)与升压芯片的信号反馈引脚连接。 升压电路在各元件的参数不变的前提下,通过输出电压实现对输入电压变化的跟踪,并实现输出电压与输入电压之间的电压差固定的效果。

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