公开(公告)号：US10818236B2

公开(公告)日：2020-10-27

申请号：US16118192

申请日：2018-08-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

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

IPC: G09G3/3258 ,  G09G3/3233

Abstract: The present disclosure relates to a display device, a display substrate, a method and a device for display compensation. The method includes: before displaying an image, performing initial compensation on each of the pixel circuits to obtain an average reference voltage of the plurality of pixel circuits; controlling the display substrate to display an image and performing external compensation on each of the pixel circuits during a display duration of one frame of the image, obtaining a charging voltage on the sensing line of each of the pixel circuits during the external compensation, obtaining a first reference voltage of each of the pixel circuits according to the charging voltage on the sensing line and the average reference voltage, and performing internal compensation on each of the pixel circuits according to the first reference voltage.

公开(公告)号：US10818207B2

公开(公告)日：2020-10-27

申请号：US16086675

申请日：2018-03-02

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yongqian Li ,  Pan Xu ,  Quanhu Li

IPC: G09G3/00 ,  G09G3/30

Abstract: A circuitry and a method for detecting a failed pixel, and a display device are provided. The circuitry for detecting the failed pixel includes a display control circuit and a failed pixel detection circuit. The display control circuit is connected to a pixel driving circuit, and configured to control, at detection voltage write-in stage and failed pixel detection stage, the pixel driving circuit to cause light-emitting element not to emit light. The failed pixel detection circuit is connected to first electrode of the light-emitting element via failure sense line, and configured to apply a reference voltage to the first electrode of the light-emitting element via the failure sense line at the detection voltage write-in stage, detect a potential at the first electrode of the light-emitting element at the failed pixel detection stage, and determine, in accordance with the potential, whether the pixel circuit is failed.

公开(公告)号：US10803803B2

公开(公告)日：2020-10-13

申请号：US15869625

申请日：2018-01-12

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pan Xu

IPC: G09G3/3258 ,  H01L51/52 ,  G09G3/3233 ,  H01L51/00 ,  G09G3/00

Abstract: An organic light emitting diode pixel compensation method, an organic light emitting diode pixel compensation device and a display device are provided. The organic light emitting diode pixel compensation method includes: testing drive transistors of sub-pixels in an Nth row to obtain first test information; testing drive transistors of sub-pixels in an Mth row to obtain second test information; calculating a compensation parameter based on the first test information and the second test information; and compensating the sub-pixels in the Nth row, the sub-pixels in the Mth row and the sub-pixels in a rows adjacent to the Nth row and the Mth row based on the compensation parameter, where N=an+b, M=an+c, a≥2, 0≤b

公开(公告)号：US10762844B2

公开(公告)日：2020-09-01

申请号：US16096796

申请日：2018-01-17

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yongqian Li ,  Pan Xu ,  Quanhu Li

IPC: G09G5/00 ,  G09G3/3258

Abstract: The present application provides a pixel driving circuit, including a driving sub-circuit, a compensation sub-circuit, a first switching sub-circuit, and a second switching sub-circuit. The driving sub-circuit has a control terminal electrically connected to a first terminal of the second switching sub-circuit, a first terminal electrically connected to a light-emitting element, and a second terminal electrically connected to a power source; the compensation sub-circuit has a first terminal electrically connected to the first terminal of the driving sub-circuit, and a second terminal electrically connected to the control terminal of the driving sub-circuit; the first switching sub-circuit has a control terminal electrically connected to a first signal input terminal, a first terminal electrically connected to the first terminal of the driving sub-circuit, and a second terminal electrically connected to an initial voltage input terminal; and the second switching sub-circuit has a control terminal electrically connected to a second signal input terminal, a first terminal electrically connected to the control terminal of the driving sub-circuit, and a second terminal electrically connected to a data signal input terminal.

公开(公告)号：US10699643B2

公开(公告)日：2020-06-30

申请号：US16334114

申请日：2018-01-04

Applicant: Hefei Xinsheng Optoelectronics Technology Co., Ltd. ,  BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Can Yuan ,  Zhidong Yuan ,  Yongqian Li ,  Pan Xu ,  Wenchao Bao ,  Min He

IPC: G09G3/3233 ,  G09G3/3258 ,  G09G3/3275

Abstract: The present disclosure relates to a pixel driving compensation circuit. The pixel driving compensation circuit can detect and compensate a driving current of a sub-pixel in a pixel unit. The pixel unit includes first, second, and third sub-pixels and the first to third sub-pixels respectively include first, second, and third driving transistors. The pixel driving compensation circuit includes a first switching sub-circuit configured to be turned on in a first period to transmit a driving current output from the first driving transistor to a first detection line, second switching sub-circuit configured to be turned on in a second period to transmit a driving current output from the second driving transistor to a first detection line, and a third switching sub-circuit configured to be turned on in the first period to transmit a driving current output from the third driving transistor to a second detection line.

公开(公告)号：US10553154B2

公开(公告)日：2020-02-04

申请号：US15744381

申请日：2017-06-30

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yongqian Li ,  Pan Xu ,  Zhidong Yuan

IPC: G09G3/3233 ,  G09G3/00 ,  G09G3/3266

Abstract: A method and an apparatus for detecting a driving circuit. The method includes: inputting a data signal, a gate line scanning signal, a voltage signal, and a first control signal with a first voltage level into a data input end, a gate scanning input end, a power source end and a voltage sensing end of the driving circuit, respectively; by inputting a second control signal with a second voltage level into a sensing-scanning input end, controlling a pixel storage capacitor to be charged, and measuring a first voltage of an OLED anode end; by inputting the second control signal with a third voltage level to the sensing-scanning input end, controlling the pixel storage capacitor to be discharged, and measuring a second voltage of the OLED anode end; and determining whether the driving circuit has abnormity or not according to the first voltage and the second voltage.

公开(公告)号：US20190371245A1

公开(公告)日：2019-12-05

申请号：US16334114

申请日：2018-01-04

Applicant: Hefei Xinsheng Optoelectronics Technology Co., Ltd ,  BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Can Yuan ,  Zhidong Yuan ,  Yongqian Li ,  Pan Xu ,  Wenchao Bao ,  Min He

IPC: G09G3/3258 ,  G09G3/3233 ,  G09G3/3275

Abstract: The present disclosure relates to a pixel driving compensation circuit. The pixel driving compensation circuit can detect and compensate a driving current of a sub-pixel in a pixel unit. The pixel unit includes first, second, and third sub-pixels and the first to third sub-pixels respectively include first, second, and third driving transistors. The pixel driving compensation circuit includes a first switching sub-circuit configured to be turned on in a first period to transmit a driving current output from the first driving transistor to a first detection line, second switching sub-circuit configured to be turned on in a second period to transmit a driving current output from the second driving transistor to a first detection line, and a third switching sub-circuit configured to be turned on in the first period to transmit a driving current output from the third driving transistor to a second detection line.

公开(公告)号：US20180374405A1

公开(公告)日：2018-12-27

申请号：US15744381

申请日：2017-06-30

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yongqian Li ,  Pan Xu ,  Zhidong Yuan

IPC: G09G3/00 ,  G09G3/3266

Abstract: A method and an apparatus for detecting a driving circuit. The method includes: inputting a data signal, a gate line scanning signal, a voltage signal, and a first control signal with a first voltage level into a data input end, a gate scanning input end, a power source end and a voltage sensing end of the driving circuit, respectively; by inputting a second control signal with a second voltage level into a sensing-scanning input end, controlling a pixel storage capacitor to be charged, and measuring a first voltage of an OLED anode end; by inputting the second control signal with a third voltage level to the sensing-scanning input end, controlling the pixel storage capacitor to be discharged, and measuring a second voltage of the OLED anode end; and determining whether the driving circuit has abnormity or not according to the first voltage and the second voltage.

公开(公告)号：US20250037667A1

公开(公告)日：2025-01-30

申请号：US18696855

申请日：2023-02-01

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xing Zhang ,  Pan Xu ,  Ying Han ,  Chengyuan Luo ,  Donghui Zhao ,  Guangshuang Lv ,  Cheng Xu

IPC: G09G3/3266 ,  G09G3/32 ,  G09G3/3233 ,  G09G3/36

Abstract: A display panel includes a plurality of rows of pixel circuits, one or more rows of first dummy pixel circuits, a plurality of cascaded scanning driving units and at least one first dummy scanning driving unit. The plurality of rows of pixel circuits are arranged in a first direction. The one or more rows of first dummy pixel circuits are located on a side of the plurality of rows of pixel circuits in the first direction. Each scanning driving unit is configured to transmit a scanning signal to at least one row of pixel circuits. A first dummy scanning driving unit is cascaded to a first stage of scanning driving unit among the plurality of scanning driving units, and is configured to transmit; a cascade signal to the first stage of scanning driving unit; and transmit scanning signals to at least one row of first dummy pixel circuits.

公开(公告)号：US12161036B2

公开(公告)日：2024-12-03

申请号：US17610409

申请日：2020-11-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pan Xu ,  Yongqian Li ,  Dacheng Zhang ,  Lang Liu

IPC: H10K59/13 ,  H10K50/824 ,  H10K59/131

Abstract: A display substrate has a display area including a plurality of sub-display areas. The display substrate includes a base, a plurality of columns of pixels, a plurality of first and second power lines disposed on the base. At least two columns of pixels are disposed in each sub-display area, and each column of pixels includes at least three columns of sub-pixels. At least one first power line is disposed in each sub-display area and configured to provide a first power signal to all sub-pixels in a sub-display area. The second power lines are configured to provide second power signals to all sub-pixels. A plurality of columns of sub-pixels are disposed between any two adjacent power lines, and any first and second power lines are each arranged between two adjacent columns of sub-pixels emitting light of a first color and sub-pixels emitting light of a second color.