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
    97.
    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
    98.
    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。

    THIN FILM TRANSISTOR ARRAY SUBSTRATE AND DRIVING METHOD THEREFOR AS WELL AS LIQUID CRYSTAL DISPLAY
    99.
    发明申请
    THIN FILM TRANSISTOR ARRAY SUBSTRATE AND DRIVING METHOD THEREFOR AS WELL AS LIQUID CRYSTAL DISPLAY 有权
    薄膜晶体管阵列基板和驱动方法,如液晶显示器

    公开(公告)号:US20140368480A1

    公开(公告)日:2014-12-18

    申请号:US14123669

    申请日:2012-12-03

    Abstract: A thin film transistor array substrate, a driving method therefore, and a liquid crystal display are disclosed. The thin film transistor array substrate includes at least a sub-pixel region formed by a gate line and a data line intersected with each other, wherein, each sub-pixel comprises a first transistor (21) of which the gate is connected with a gate line and the drain is connected with a data line and a first storage capacitor (23) of which one end is connected with the source of the first transistor (21) and the other end is connected with an output of a reference voltage, the sub-pixel further comprises a second storage capacitor (24) and a second transistor (25), wherein one end of the second storage capacitor (24) is connected with the source of the first transistor (21), and the other end of the second storage capacitor (24) is connected with the drain of the second transistor (25); the source of the second transistor (25) is connected with the output of the reference voltage, and the gate of the second transistor (25) is connected with an output of an Enable signal. Since a second storage capacitor (24) is additionally added to each sub-pixel in the thin film transistor array substrate, the capacitance of the storage capacitors during static display is increased, the voltage conversion frequency during static display is deceased, and the system power consumption is decreased.

    Abstract translation: 公开了一种薄膜晶体管阵列基板,其驱动方法和液晶显示器。 所述薄膜晶体管阵列基板至少包括由栅极线和彼此相交的数据线形成的子像素区域,其中,每个子像素包括第一晶体管(21),栅极与栅极连接 线路和漏极与数据线连接,第一存储电容器(23)的一端与第一晶体管(21)的源极连接,另一端与参考电压的输出端相连,子 像素还包括第二存储电容器(24)和第二晶体管(25),其中第二存储电容器(24)的一端与第一晶体管(21)的源极连接,第二存储电容器的另一端 存储电容器(24)与第二晶体管(25)的漏极连接; 第二晶体管(25)的源极与参考电压的输出相连,第二晶体管(25)的栅极与使能信号的输出相连。 由于第二存储电容器(24)被附加到薄膜晶体管阵列基板中的每个子像素,所以静态显示期间的存储电容器的电容增加,静态显示期间的电压转换频率下降,系统功率 消费减少。

    Driving method for display panel, driving circuit, display panel and display device

    公开(公告)号:US11501683B2

    公开(公告)日:2022-11-15

    申请号:US16341679

    申请日:2018-10-29

    Inventor: Bin Zhang

    Abstract: The present disclosure provides a driving method for a display panel for displaying multiple frames of image to be displayed, the image to be displayed includes a plurality of image pixel units, the display panel includes a plurality of display pixel units, and the driving method includes the following steps performed when displaying each of frames of image to be displayed: detecting a grayscale value of each image pixel unit in the image to be displayed; determining whether the grayscale value of each image pixel unit is greater than a predetermined value; and providing a predetermined display voltage to a display pixel unit of the display panel corresponding to the image pixel unit, the grayscale value of which is greater than the predetermined value, the predetermined display voltage is lower than a voltage provided when the display pixel unit is driven according to the predetermined value.

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