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    OLED pixel driving circuit, driving method thereof and display device including the same
    81.
    发明授权
    OLED pixel driving circuit, driving method thereof and display device including the same 有权

    公开(公告)号：US10885845B2

    公开(公告)日：2021-01-05

    申请号：US16022756

    申请日：2018-06-29

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Cuili Gai ,  Yi Cheng Lin ,  Ling Wang ,  Baoxia Zhang ,  Pan Xu

    IPC: G09G3/32 ,  G09G3/3258 ,  G09G3/3233

    Abstract: The present disclosure provides an OLED pixel driving circuit, a driving method thereof and a display device including the same. The OLED pixel driving circuit includes: a first transistor, providing driving current to an organic light emitting diode, and comprising a first terminal, second terminal and control terminal coupled to a first node, second node and third node respectively; a power switch unit, coupled between a power supply voltage and the second node; a first switch unit, coupled between a data line and a fourth node to couple a data voltage signal from the data line to the fourth node; a second switch unit, coupled between the third node and the second node to enable the first transistor connected as a diode; a first capacitor, coupled between the fourth node and the first node; and a second capacitor, coupled between the fourth node and the second node.

    Pixel circuit, display panel, display device, and method of driving pixel circuit
    83.
    发明授权
    Pixel circuit, display panel, display device, and method of driving pixel circuit 有权

    公开(公告)号：US10783831B2

    公开(公告)日：2020-09-22

    申请号：US16413645

    申请日：2019-05-16

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Yicheng Lin ,  Pan Xu ,  Guang Yan ,  Dongfang Yang

    IPC: G09G3/3258 ,  H05B45/10 ,  H01L27/32

    Abstract: A pixel circuit comprising an organic light emitting diode; a driving transistor including a gate, a source connected to a first node, a drain connected to a second power supply terminal; and a photosensitive circuit connected between a second node and a third node, the second node configured to receive a reference voltage. The driving transistor is configured to, responsive to a gate voltage and a source voltage, control a magnitude of a driving current flowing through the organic light emitting diode. The photosensitive circuit is configured to sense an intensity of light emission of the organic light emitting diode and to set a potential at the third node according to the reference voltage and the intensity that was sensed, the potential that was set being detectable by an external circuit via a sense line.

    Display panel, method for processing defective pixels thereof, display device
    84.
    发明授权
    Display panel, method for processing defective pixels thereof, display device 有权

    公开(公告)号：US10763391B2

    公开(公告)日：2020-09-01

    申请号：US16182883

    申请日：2018-11-07

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Yicheng Lin ,  Cuili Gai ,  Baoxia Zhang ,  Ling Wang ,  Quanhu Li ,  Pan Xu

    IPC: H01L33/00 ,  G09G3/00 ,  H01L51/00 ,  H01L27/32 ,  G09G3/3225

    Abstract: The present disclosure provides a display panel, a display device comprising such a display panel, and a method for processing defective pixels of such a display panel. The display panel comprises: a substrate; a plurality of pixel units on the substrate and arranged in an array. Each of the pixel units includes a light emitting region and a driving circuit region. In each of the pixel units, the driving circuit region includes a transistor, the light emitting region includes a first electrode, and the first electrode is electrically coupled to a first terminal of the transistor. In a row direction or a column direction of the plurality of pixel units arranged in an array, light emitting regions of two adjacent pixel units are adjacent to each other.

    Detection Method for Pixel Circuit, Driving Method for Display Panel and Display Panel
    86.
    发明申请
    Detection Method for Pixel Circuit, Driving Method for Display Panel and Display Panel 审中-公开

    公开(公告)号：US20190304362A1

    公开(公告)日：2019-10-03

    申请号：US16116265

    申请日：2018-08-29

    Applicant: BOE Technology Group Co., Ltd. ,  Hefei Xinsheng Optoelectronics Technology Co., Ltd.

    Inventor： Zhidong Yuan ,  Yongqian Li ,  Pan Xu ,  Can Yuan

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

    Abstract: A detection method for a pixel circuit, a driving method for a display panel and a display panel are disclosed. The pixel circuit includes a driving transistor including a gate electrode, and a first terminal connected to a sensing line. The detection method includes: applying a data voltage and a setting voltage to the driving transistor so as to obtain a sensed voltage and obtaining a threshold voltage of the driving transistor based on the data voltage, the setting voltage and the sensed voltage. The data voltage and the setting voltage are respectively applied to the gate electrode and the first terminal so as to set the driving transistor to be in a saturation region, the gate electrode is set to be in a suspension state when the driving transistor is maintained in the saturation region, and the sensed voltage is obtained after a pre-determined time period.

    Display device
    88.
    发明授权
    Display device 有权

    公开(公告)号：US10311775B2

    公开(公告)日：2019-06-04

    申请号：US15527793

    申请日：2016-07-01

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Pan Xu

    IPC: G09G3/20 ,  H05K1/11 ,  H05K1/14 ,  H05K1/18 ,  H01L27/12

    Abstract: A display device includes a display panel and a control circuit board configured to provide a driving signal to the display panel. The display panel includes a plurality of pixel structures of which pixel structures arranged in one row are connected to one gate line. Pixel structures arranged in one column are connected to one data line. The control circuit board includes a driving chip, an end portion of each of the gate lines and an end portion of each of the data lines are respectively provided with panel pins. The control circuit board is provided with circuit board pins to be electrically connected with the panel pins, and connecting lines through which pins of the control circuit board are connected to the circuit board pins. A spacing between adjacent circuit board pins is larger than a spacing between adjacent pins of the driving chip connected with the circuit board pins.

    Digital low dropout regulator and control method thereof
    89.
    发明授权
    Digital low dropout regulator and control method thereof 有权

    公开(公告)号：US10168719B2

    公开(公告)日：2019-01-01

    申请号：US15852330

    申请日：2017-12-22

    Applicant: BOE TECHNOLOGY GROUP CO., LTD. ,  HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.

    Inventor： Xuehuan Feng ,  Pan Xu ,  Yongqian Li ,  Zhongyuan Wu

    IPC: G05F1/575 ,  G05F1/56 ,  G05F1/563 ,  H03K5/24 ,  H03K21/02 ,  H03K5/1534

    Abstract: The present invention provides a digital low dropout regulator and a control method thereof. The regulator comprises a voltage comparator, a counter, a decoder, a PMOSFET array and a divider. The voltage comparator receives an actual voltage output from the PMOSFET array through the positive input terminal, receives a reference voltage through the negative input terminal, and compares the actual voltage and the reference voltage to obtain a level signal. The divider calculates based on an output voltage pre-configured for a PMOSFET array and an actual voltage output by the PMOSFET array in at least two clock cycles to obtain a first value. The counter generates a control signal based on the level signal and the first value. The decoder receives the control signal transmitted by the counter and controlling the number of switched-on transistors, in the PMOSFET on a basis of the control signal.

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