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    Pixel compensation circuit, driving method and display device
    1.
    发明授权
    Pixel compensation circuit, driving method and display device 有权

    公开(公告)号：US10347184B2

    公开(公告)日：2019-07-09

    申请号：US15524262

    申请日：2017-04-06

    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.

    Inventor： Baixiang Han ,  Liang Sun

    IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291 ,  H01L27/32 ,  G09G3/3233

    Abstract: A pixel compensation circuit, a driving method and a display device are disclosed. The pixel compensation circuit includes: a light-emitting element; a driving switch, a first terminal is connected to a power source voltage; a first switch and a control terminal is connected to a first scanning signal, a first terminal is connected to a data signal; a second switch, a control terminal is connected to a control signal and a first terminal is connected to the second terminal of the driving switch; a third switch, a control terminal is connected to a second scanning signal; a storage capacitor, a first terminal is connected to a control terminal of the driving switch, a second terminal is connected to the second terminal of the second switch. Through the above method, the affection of the current flowing through the light-emitting element caused by the threshold voltage of the driving switch is canceled.

    Repair structure of line defect of AMOLED display panel and repair method
    2.
    发明授权
    Repair structure of line defect of AMOLED display panel and repair method 有权

    公开(公告)号：US10109688B2

    公开(公告)日：2018-10-23

    申请号：US15105576

    申请日：2016-04-25

    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.

    Inventor： Baixiang Han

    IPC: H01L27/32 ,  G09G3/00 ,  H01L21/66 ,  H01L21/768

    Abstract: The present invention provides a repair structure of a line defect of an AMOLED display panel and a repair method. The conductive film (410) correspondingly overlaps and covers above the test TFT (310) and is insulated from the test TFT (310), and the repair line (420) is insulated and crossed with all the signal fanout lines (200) and the corresponding test line (330). It is realized that the repair line is directly grafted on the AMOLED display panel detecting circuit, which can utilize the present detecting circuit layout of the AMOLED display panel capable of introducing the repair line for having the repair function and saving the layout space, and has no additional requirement to the control IC, and particularly, can be applicable for the line defect repair of the small size, high resolution AMOLED display panel.

    TFT substrate, display device and manufacturing method
    3.
    发明授权
    TFT substrate, display device and manufacturing method 有权

    公开(公告)号：US10090336B2

    公开(公告)日：2018-10-02

    申请号：US15023406

    申请日：2016-02-26

    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.

    Inventor： Baixiang Han

    IPC: H01L27/12 ,  H01L29/417 ,  H01L29/423

    Abstract: A TFT substrate, a display device and a manufacturing method are disclosed. The TFT substrate includes a substrate and a first TFT structure and a second TFT structure formed on the substrate. The first TFT structure includes a first gate pattern and a first semiconductor pattern. The first semiconductor pattern is divided into a first channel region, and a first doping region and a second doping region located at two sides of the first channel region. The first channel region is disposed corresponding to the first gate pattern to form a first conductive channel under the function of first gate pattern. The first doping region is extended inside the second TFT structure as a second gate pattern of the second TFT structure. The present invention uses doping drain of a switching TFT as gate of a driving TFT to save layout space, and beneficial for realization of higher PPI.

    AMOLED pixel driving circuit and pixel driving method
    4.
    发明授权
    AMOLED pixel driving circuit and pixel driving method 有权

    公开(公告)号：US10056033B2

    公开(公告)日：2018-08-21

    申请号：US15105565

    申请日：2016-04-26

    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.

    Inventor： Baixiang Han

    IPC: G09G3/3233 ,  H01L27/32

    CPC classification number: G09G3/3233 ,  G09G2320/045 ,  H01L27/3262 ,  H01L27/3265

    Abstract: The present invention provides an AMOLED pixel driving circuit and a pixel driving method which utilize the 6T1C structure driving circuit, wherein the fourth thin film transistor (T4) is located between a gate (G) of the first thin film transistor (T1) and a power source negative voltage (VSS), and controls writing the power source negative voltage (VSS) to the gate (G) of the first thin film transistor (T1) by receiving an electrical property recovery control signal (CS), and the fifth thin film transistor (T5) and the sixth thin film transistor (T6) are electrically coupled to a drain (D) and a source (S) of the first thin film transistor (T1), respectively, and control writing a reference negative voltage (Vref) to the drain (D) and the source (S) of the first thin film transistor (T1) with the electrical property recovery control signal (CS).

    AMOLED pixel driver circuit and pixel driving method
    7.
    发明授权
    AMOLED pixel driver circuit and pixel driving method 有权

    公开(公告)号：US10134329B2

    公开(公告)日：2018-11-20

    申请号：US15328497

    申请日：2016-12-19

    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.

    Inventor： Baixiang Han

    IPC: G09G3/3225 ,  H01L27/32 ,  G09G3/3233 ,  G09G3/3266

    Abstract: The invention provides an AMOLED pixel driver circuit and pixel driving method, by using a pixel driver circuit of 5T1C structure to effectively compensate threshold voltage of driving TFT in each pixel through a source-following approach to compensate the threshold voltage of the driving TFT so that the current flowing through the OLED is independent of the threshold voltage of the first TFT, the threshold voltage of the OLED and the negative voltage of the power source to ensure even light-emission result of OLED and improve display result.

    Pixel driving circuit and pixel driving method of organic light-emitting diode
    10.
    发明授权
    Pixel driving circuit and pixel driving method of organic light-emitting diode 有权
    有机发光二极管的像素驱动电路和像素驱动方法

    公开(公告)号：US09495907B2

    公开(公告)日：2016-11-15

    申请号：US14381901

    申请日：2014-07-02

    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.

    Inventor： Baixiang Han

    IPC: G09G3/3233 ,  G09G3/32

    CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0262 ,  G09G2320/043 ,  G09G2320/045

    Abstract: The present invention provides a pixel driving circuit and a pixel driving method of an organic light emitting diode, the pixel driving circuit comprises: a first transistor (T1), a second transistor (T2), a third transistor (T3), a fourth transistor (T4), a fifth transistor (T5), a sixth transistor (T6), a storage capacitor (C1) and an organic light-emitting diode (OLED); which also comprises a scanning control terminal (Scan), a data signal terminal (Data), a constant current source (Iref), a control light emitting signal terminal (Em), a power supply voltage (VDD) and a power supply negative electrode (VSS); the first transistor (T1) is a driving transistor. The present invention uses 6T1C compensation circuit to compensate the threshold voltage of the driving transistor of each pixel, grabbing the threshold voltage through the constant current source, and the data writing and the threshold voltage (Vth) grabbing are simultaneous, which effectively compensate the threshold voltage (Vth) variation of the driving transistor, improving the display quality.

    Abstract translation: 本发明提供一种有机发光二极管的像素驱动电路和像素驱动方法，所述像素驱动电路包括：第一晶体管（T1），第二晶体管（T2），第三晶体管（T3），第四晶体管 （T4），第五晶体管（T5），第六晶体管（T6），存储电容器（C1）和有机发光二极管（OLED）; 其还包括扫描控制端（Scan），数据信号端（Data），恒流源（Iref），控制发光信号端（Em），电源电压（VDD）和电源负极 （VSS）; 第一晶体管（T1）是驱动晶体管。 本发明使用6T1C补偿电路来补偿每个像素的驱动晶体管的阈值电压，通过恒流源获取阈值电压，并且数据写入和阈值电压（Vth）抓取是同时的，其有效地补偿阈值 驱动晶体管的电压（Vth）变化，提高显示质量。

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