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: 11450267
    Abstract: Brightness compensation method and apparatus for pixel point are provided. The compensation method includes measurement processes of N times, N?2.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: September 20, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Dongxu Han, Tieshi Wang, Zhongyuan Wu, Yongqian Li, Pan Xu, Jinxia Hu
  • Patent number: 11443677
    Abstract: The present disclosure relates to a display method of a display panel. The display method may include obtaining original luminance of three single color subpixels in each of the pixel units based on an image to be displayed; obtaining luminance compensation values of the three single color subpixels that need to be color compensated at a time of obtaining the luminance of the mixed color subpixel as the first substitute luminance; calculating luminance of the mixed color produced by the three single color subpixels in the pixel unit respectively based on each of the luminance of the three single color subpixels after color compensation; and setting input luminance of the single color subpixel having the smallest luminance of the mixed color as 0, and obtaining actual luminance of the other single color subpixels and the mixed color subpixel.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: September 13, 2022
    Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Dongxu Han, Chi Zhang, Tieshi Wang, Zhongyuan Wu, Yongqian Li, Jinxia Hu
  • Publication number: 20220285476
    Abstract: Provided in the present disclosure are a display substrate and a preparation method therefor, and a display apparatus. The display substrate comprises a plurality of display units, each display unit comprising a display area and a transparent area, and the display area comprising a plurality of sub-pixels; each sub-pixel comprises a second metal layer and a third metal layer, the second metal layer comprising a first scanning line and a second scanning line defining a display row, the third metal layer comprising a first power source line, a second power source line, a compensation line, and a data line defining the plurality of sub-pixels; the first power source line, the second power source line, the compensation line, and the data line all comprise a vertical linear section and a horizontal polyline section.
    Type: Application
    Filed: April 12, 2021
    Publication date: September 8, 2022
    Inventors: Yongqian LI, Zhenhua QIU, Ying WANG, Meng LI, Dongxu HAN, Dacheng ZHANG, Shi SUN
  • Patent number: 11335264
    Abstract: A pixel circuit and a driving method thereof, and a display device, the pixel circuit being configured to drive a light-emitting element and including: a node control sub-circuit, which is configured to provide a first node with a signal of a data signal end and provide a second node with a signal of a control signal end under the control of a first scanning end; a driving sub-circuit, which is configured to provide the second node with a driving current under the control of the first node and the second node; a storage sub-circuit, which is configured to store electric charge between the first node and the second node; a reading sub-circuit, and the light-emitting element, which is electrically connected to the second node and a second power supply end, respectively.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: May 17, 2022
    Assignees: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Zhidong Yuan, Xuehuan Feng, Yongqian Li, Can Yuan, Meng Li, Dongxu Han
  • Publication number: 20220005413
    Abstract: A pixel circuit and a driving method thereof, and a display device, the pixel circuit being configured to drive a light-emitting element and including: a node control sub-circuit, which is configured to provide a first node with a signal of a data signal end and provide a second node with a signal of a control signal end under the control of a first scanning end; a driving sub-circuit, which is configured to provide the second node with a driving current under the control of the first node and the second node; a storage sub-circuit, which is configured to store electric charge between the first node and the second node; a reading sub-circuit, and the light-emitting element, which is electrically connected to the second node and a second power supply end, respectively.
    Type: Application
    Filed: August 7, 2020
    Publication date: January 6, 2022
    Inventors: Zhidong YUAN, Xuehuan FENG, Yongqian LI, Can YUAN, Meng LI, Dongxu HAN
  • Patent number: 11200827
    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: Grant
    Filed: June 3, 2019
    Date of Patent: December 14, 2021
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Wenchao Bao, Xiaolong Wei, Dongxu Han
  • Publication number: 20210327343
    Abstract: Brightness compensation method and apparatus for pixel point are provided. The compensation method includes measurement processes of N times, N?2.
    Type: Application
    Filed: March 27, 2019
    Publication date: October 21, 2021
    Inventors: Dongxu HAN, Tieshi WANG, Zhongyuan WU, Yongqian LI, Pan XU, Jinxia HU
  • Publication number: 20210225246
    Abstract: The present disclosure relates to a display method of a display panel, The display method may include obtaining original luminance of three single color subpixels in each of the pixel units based on an image to be displayed; obtaining luminance compensation values of the three single color subpixels that need to be color compensated at a time of obtaining the luminance of the mixed color subpixel as the first substitute luminance; calculating luminance of the mixed color produced by the three single color subpixels in the pixel unit respectively based on each of the luminance of the three single color subpixels after color compensation; and setting input luminance of the single color subpixel having the smallest luminance of the mixed color as 0, and obtaining actual luminance of the other single color subpixels and the mixed color subpixel.
    Type: Application
    Filed: February 19, 2020
    Publication date: July 22, 2021
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Dongxu Han, Chi Zhang, Tieshi Wang, Zhongyuan Wu, Yongqian Li, Jinxia Hu
  • Publication number: 20210166606
    Abstract: A method includes: setting target white color coordinates, a target white luminance and a gamma value; calculating a first luminance value of each primary color at each gray scale; measuring color coordinates of the primary color at each gray scale, and generating a list of a correspondence among the gray scale, the first luminance value and the color coordinates of the primary color; selecting a plurality of gray scales, and obtaining color coordinates corresponding to one of the plurality of gray scales; calculating a second luminance value of the primary color at each of the plurality of gray scales; and obtaining and storing a luminance correction relationship of the primary color according to the second luminance value of the primary color at each of the plurality of gray scales and the first luminance values corresponding to each of the plurality of gray scales.
    Type: Application
    Filed: May 27, 2020
    Publication date: June 3, 2021
    Inventors: Dongxu HAN, Tieshi WANG, Zhongyuan WU, Wei CHEN, Enming XIE, Chi ZHANG, Yongqian LI
  • 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: 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
  • 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
  • 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