Patents by Inventor Dongxu HAN

Dongxu HAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10997913
    Abstract: The present disclosure relates to a method and an apparatus for controlling a drive current of a display panel, an electronic device, and a storage medium. A standard drive current of the display panel is calculated based on the power function of the display panel. An actual drive current is detected in a working process of the display panel, and it is determined whether the actual drive current exceeds the standard by comparing the actual drive current with the standard drive current. The actual drive current is regulated if the actual drive current exceeds the standard.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: May 4, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Dongxu Han, Tieshi Wang, Zhongyuan Wu, Yongqian Li, Chi Zhang, Jinxia Hu, Wei Chen, Pan Xu
  • Patent number: 10939564
    Abstract: A circuit board includes a substrate, an input binding region and at least two output binding regions disposed on the substrate. Each of the output binding regions includes a plurality of binding portions, and the number of the binding portions included in different output binding regions is different. The substrate is configured to output a signal received by the input binding region to respective binding portions included in each of the output binding regions.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: March 2, 2021
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Enming Xie, Dongxu Han, Wenchao Bao, Chun Cao
  • Patent number: 10916194
    Abstract: The present application provides a pixel compensation device, a pixel compensation method, a pixel driving device, a timing control module and a display apparatus. The pixel compensation device includes a luminance conversion unit, an emitting voltage calculation unit, an emitting voltage offset calculation unit and a data conversion unit. The data conversion unit is configured to read pre-stored emitting voltage offset compensation data for a driving transistor in a sub-pixel unit with respect to a gate-source voltage of the driving transistor and obtain corresponding first luminance compensation data based on the emitting voltage offset and the emitting voltage offset compensation data. The data conversion unit is further configured to generate source luminance data based on the luminance signal data and the first luminance compensation data and output the source luminance data to a source driving module.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: February 9, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Fei Yang, Yue Wu, Dongxu Han
  • Publication number: 20200410927
    Abstract: A pixel circuit, a driving method thereof, and a display apparatus are disclosed. The pixel circuit is configured to drive a light emitting element to emit light, and includes: a node control sub-circuit, a light emitting control sub-circuit and a driving sub-circuit; the node control sub-circuit is connected with a first scanning terminal, a second scanning terminal, a reset signal terminal, an initial signal terminal, a first node, a second node, a third node, a data signal terminal and a ground terminal respectively; the light emitting control sub-circuit is connected with a first power supply terminal, a light emitting control terminal and a fourth node respectively; the driving sub-circuit is connected with the first node, the second node, the third node and the fourth node respectively; and the light emitting element is connected with the first node and a second power supply terminal respectively.
    Type: Application
    Filed: June 18, 2020
    Publication date: December 31, 2020
    Inventors: Tieshi WANG, Shengnan LI, Wei QIN, Dongxu HAN
  • Patent number: 10777134
    Abstract: A detection method of a pixel circuit, a driving method of a display panel, a display device and a pixel circuit are provided. The pixel circuit includes a driving transistor, and the detection method includes a writing phase and a reading phase. The writing phase includes: writing a reference data voltage to a gate electrode of the driving transistor, and writing a first detection writing voltage to a first electrode of the driving transistor to turn on the driving transistor; and the reading phase includes: upon the driving transistor being turned off after a first predetermined time after writing the first detection writing voltage, reading a voltage of the first electrode of the driving transistor to obtain a first detection reading voltage for obtaining a threshold voltage of the driving transistor.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: September 15, 2020
    Assignees: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Can Yuan, Yongqian Li, Zhenfei Cai, Zhidong Yuan, Dongxu Han
  • Patent number: 10714019
    Abstract: A brightness compensation method for a display apparatus, and a display apparatus are disclosed. The brightness compensation method includes: for each row of display units, turning on the row S times during a display time of one frame; inputting, to each display unit in the row a pixel data signal of the frame corresponding to the display unit, when the row is turned on for the i-th time; inputting, to a to-be-compensated display unit in the row, a compensation signal, and controlling other display unit than the to-be-compensated display unit in the row to present black, when the row is turned on for each time other than the i-th time; wherein both S and i are integers, S?2, 1?i?S; for every two adjacent rows of display units, a time interval of same turning-ons of the latter and the former is the same.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: July 14, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Zhidong Yuan, Can Yuan, Zhenfei Cai, Yongqian Li, Dongxu Han
  • Publication number: 20200137898
    Abstract: A circuit board includes a substrate, an input binding region and at least two output binding regions disposed on the substrate. Each of the output binding regions includes a plurality of binding portions, and the number of the binding portions included in different output binding regions is different. The substrate is configured to output a signal received by the input binding region to respective binding portions included in each of the output binding regions.
    Type: Application
    Filed: May 28, 2019
    Publication date: April 30, 2020
    Applicants: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Enming XIE, Dongxu HAN, Wenchao BAO, Chun CAO
  • Publication number: 20200135084
    Abstract: A chromaticity compensation method, a chromaticity compensation device and a storage medium are disclosed. The chromaticity compensation method includes that, according to a preset standard chromaticity value and measured chromaticity values corresponding to a plurality of sub-display regions in a display region, chromaticity compensation values of the sub-display regions are determined, and the display region is divided into the plurality of sub-display regions in close arrangement, and each of the sub-display regions includes a plurality of sub-pixels; a data smoothing treatment is performed between the chromaticity compensation values of the sub-display regions that are adjacent, so as to determine the smoothed chromaticity compensation values of the sub-pixels in the sub-display regions; and upon display, chromaticity compensation of the sub-pixels are performed by adopting the smoothed chromaticity compensation values.
    Type: Application
    Filed: June 3, 2019
    Publication date: April 30, 2020
    Applicants: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Wenchao Bao, Xiaolong Wei, Dongxu Han
  • Patent number: 10565909
    Abstract: A test method of a display panel and a test device are disclosed. The test method includes outputting a data signal of a preset test image to the display panel to cause plural light emitting elements to emit light according to the preset test image; outputting a starting signal to a scan circuit in the display panel to cause the scan circuit to output an active level of a switching circuit to the plural rows of first scan lines as connected, successively, according to a preset timing sequence; receiving a sensing signal from a sensor circuit, including voltage value information of a first terminal of every light emitting element; comparing the voltage value information of the first terminal of every light emitting element with the preset test image to obtain a test result. The test method solves the problem of missing detection of Mura.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: February 18, 2020
    Assignee: BOE Technology Group Co., Ltd
    Inventors: Pan Xu, Guangcai Yuan, Yongqian Li, Dongxu Han
  • Publication number: 20200035155
    Abstract: The present disclosure relates to a method and an apparatus for controlling a drive current of a display panel, an electronic device, and a storage medium. A standard drive current of the display panel is calculated based on the power function of the display panel. An actual drive current is detected in a working process of the display panel, and it is determined whether the actual drive current exceeds the standard by comparing the actual drive current with the standard drive current. The actual drive current is regulated if the actual drive current exceeds the standard.
    Type: Application
    Filed: June 26, 2019
    Publication date: January 30, 2020
    Inventors: Dongxu HAN, Tieshi WANG, Zhongyuan WU, Yongqian LI, Chi ZHANG, Jinxia HU, Wei CHEN, Pan XU
  • Patent number: 10508949
    Abstract: Disclosed is a data acquisition device for optical compensation including a platform for carrying a display panel; and a linear image acquisition module located above the platform. The linear image acquisition module is movable relative to the platform.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: December 17, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Dongxu Han, Tieshi Wang, Chi Zhang, Wenchao Bao, Min He, Pan Xu, Yongqian Li, Kun Cao, Yue Wu
  • Patent number: 10403187
    Abstract: A gamma voltage debugging method for an electroluminescent display device, including: turning on sub-pixels in a test region to a maximum luminance value, and recording a driving current of an electroluminescent element at this time as a maximum reference current; calculating reference current values corresponding to respective gray scales according to the maximum reference current and a preset formula; and driving the sub-pixels in the test region to emit light, and for each driving current equal to a reference current value, recording a driving voltage value corresponding to the gray scale value as a gamma voltage resulted from the debugging.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: September 3, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Dongxu Han, Tieshi Wang, Pan Xu, Wenchao Bao, Chi Zhang, Zhongyuan Wu
  • Patent number: 10403190
    Abstract: Disclosed are a method for color complementation on a white organic light emitting diode (WOLED) display device, and a display device.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: September 3, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Dongxu Han, Fei Yang, Zhongyuan Wu, Yongqian Li, Tieshi Wang, Zhidong Yuan, Can Yuan, Chi Zhang, Yue Wu
  • Publication number: 20190156753
    Abstract: The present application provides a pixel compensation device, a pixel compensation method, a pixel driving device, a timing control module and a display apparatus, The pixel compensation device includes a luminance conversion unit, an emitting voltage calculation unit, an emitting voltage offset calculation unit and a data conversion unit. The data conversion unit is configured to read pre-stored emitting voltage offset compensation data for a driving transistor in a sub-pixel unit with respect to a gate-source voltage of the driving transistor and obtain corresponding first luminance compensation data based on the emitting voltage offset and the emitting voltage offset compensation data. The data conversion unit is further configured to generate source luminance data based on the luminance signal data and the first luminance compensation data and output the source luminance data to a source driving module.
    Type: Application
    Filed: August 30, 2018
    Publication date: May 23, 2019
    Inventors: Fei YANG, Yue WU, Dongxu HAN
  • Publication number: 20190147797
    Abstract: A detection method of a pixel circuit, a driving method of a display panel, a display device and a pixel circuit are provided. The pixel circuit includes a driving transistor, and the detection method includes a writing phase and a reading phase. The writing phase includes: writing a reference data voltage to a gate electrode of the driving transistor, and writing a first detection writing voltage to a first electrode of the driving transistor to turn on the driving transistor; and the reading phase includes: upon the driving transistor being turned off after a first predetermined time after writing the first detection writing voltage, reading a voltage of the first electrode of the driving transistor to obtain a first detection reading voltage for obtaining a threshold voltage of the driving transistor.
    Type: Application
    Filed: July 16, 2018
    Publication date: May 16, 2019
    Applicants: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Can Yuan, Yongqian Li, Zhenfei Cai, Zhidong Yuan, Dongxu Han
  • Patent number: 10235943
    Abstract: The present disclosure provides a display panel, its controlling method and a display device. The display panel includes a plurality of pixel units, a plurality of gate scanning lines arranged on a display substrate and a plurality of data lines arranged on the display substrate and crossing the gate scanning lines. Each pixel unit includes a data writing module, a driving module and a light-emitting element. The data writing module is configured to apply a data voltage to the driving module under the control of a current-level gate scanning signal, and the driving module is configured to drive the light-emitting element to emit light in accordance with the data voltage. The data writing modules of N adjacent pixel units in an identical row are connected to an identical data line, and N is an integer greater than 1. The data voltage across the data line is applied to the data writing modules of the N adjacent pixel units in a time-division manner under the control of the current-level gate scanning signal.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: March 19, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Dongxu Han, Guangcai Yuan, Yongqian Li
  • Publication number: 20190066601
    Abstract: A brightness compensation method for a display apparatus, and a display apparatus are disclosed. The brightness compensation method includes: for each row of display units, turning on the row S times during a display time of one frame; inputting, to each display unit in the row a pixel data signal of the frame corresponding to the display unit, when the row is turned on for the i-th time; inputting, to a to-be-compensated display unit in the row, a compensation signal, and controlling other display unit than the to-be-compensated display unit in the row to present black, when the row is turned on for each time other than the i-th time; wherein both S and i are integers, S?2, 1?i?S; for every two adjacent rows of display units, a time interval of same turning-ons of the latter and the former is the same.
    Type: Application
    Filed: May 25, 2018
    Publication date: February 28, 2019
    Inventors: Zhidong YUAN, Can YUAN, Zhenfei CAI, Yongqian LI, Dongxu HAN
  • Patent number: 10210834
    Abstract: A gate integrated driving circuit for a display panel. The gate integrated driving circuit may comprise N reset circuits. For each of the N reset circuits, a first terminal thereof may be coupled to a reference signal terminal, a second terminal thereof may be coupled to signal output terminals of a set of input and output circuits respectively, a third terminal thereof may be coupled to control terminals of driving circuits of the set of input and output circuits respectively, and a fourth terminal thereof may be coupled to a clock signal terminal coupled to input terminals of the driving circuits of the set of input and output circuits respectively. N may be an integer of at least 3. The set of input and output circuits may contain two or more input and output circuits.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: February 19, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Min He, Haixia Xu, Dongxu Han, Meng Li
  • Publication number: 20190027081
    Abstract: Disclosed are a method for color complementation on a white organic light emitting diode (WOLED) display device, and a display device.
    Type: Application
    Filed: May 9, 2018
    Publication date: January 24, 2019
    Inventors: Dongxu Han, Fei Yang, Zhongyuan Wu, Yongqian Li, Tieshi Wang, Zhidong Yuan, Can Yuan, Chi Zhang, Yue Wu
  • Publication number: 20180293952
    Abstract: A gate integrated driving circuit for a display panel. The gate integrated driving circuit may comprise N reset circuits. For each of the N reset circuits, a first terminal thereof may be coupled to a reference signal terminal a second terminal thereof may be coupled to signal output terminals of a set of input and output circuits respectively, a third terminal thereof may be coupled to control terminals of driving circuits of the set of input and output circuits respectively, and a fourth terminal thereof may be coupled to a clock signal terminal coupled to input terminals of the driving circuits of the set of input and output circuits respectively. N may be an integer of at least 3. The set of input and output circuits may contain two or more input and output circuits.
    Type: Application
    Filed: May 15, 2017
    Publication date: October 11, 2018
    Applicants: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD .
    Inventors: Min He, Haixia Xu, Dongxu Han, Meng Li