Patents by Inventor Danna Song

Danna Song 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: 11776438
    Abstract: A detecting method of a pixel circuit, a driving method of a display panel and a display device are provided. The pixel circuit includes a driving transistor, and the detecting method comprises: in a first charging cycle, applying a first data voltage to a gate electrode of the driving transistor, and in a first time duration, obtaining a first sensing voltage at a first electrode of the driving transistor and determining whether the first sensing voltage is equal to a first reference sensing voltage; and in a second charging cycle, applying a second data voltage to the gate electrode of the driving transistor, and in a second time duration, obtaining a second sensing voltage at the first electrode of the driving transistor and determining whether the second sensing voltage is equal to a second reference sensing voltage.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: October 3, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Danna Song
  • Publication number: 20230206792
    Abstract: A detecting method of a pixel circuit, a driving method of a display panel and a display device are provided.
    Type: Application
    Filed: October 31, 2018
    Publication date: June 29, 2023
    Inventor: Danna SONG
  • Patent number: 11348552
    Abstract: A method for determining a data processing sequence, for determining a selected color in a plurality of colors display by subpixels included in each pixel of a display apparatus, and the method comprising: determining, according to grayscale values of subpixels of candidate colors in a plurality of pixels included in a plurality of frames of images displayed in a current detection cycle, a usage level representative value of each candidate color in the current detection cycle; and selecting one of the candidate colors as a selected color of a next detection cycle according to detection sequence determining parameters, the detection sequence determining parameters including the usage level representative value of each candidate color in the current detection cycle. By this method, the subpixels of colors with large usage level representative values may be detected and compensated in time.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: May 31, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Danna Song
  • Patent number: 11308875
    Abstract: A detection method of a pixel circuit, a display panel and a driving method thereof are provided. The detection method includes: during a reference charging period, applying a reference data voltage to a gate electrode of a driving transistor, and at a first time duration after applying the reference data voltage, obtaining a benchmark voltage from a sensing line; and during a data charging period, applying a detection data voltage different from the reference data voltage to the gate electrode of the driving transistor, and at the first time duration after applying the detection data voltage, obtaining an initial sensing voltage from the sensing line. A sensing voltage of the pixel circuit is obtained based on at least the benchmark voltage and the initial sensing voltage, and a threshold voltage of the driving transistor is obtained based on the sensing voltage.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: April 19, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Danna Song
  • Patent number: 11308889
    Abstract: A detection method of a pixel circuit, a driving method of a display panel, and a display device are disclosed. The pixel circuit includes a driving transistor; and the detection method of the pixel circuit includes: in the first charge cycle, applying a first data voltage to a gate electrode of the driving transistor, acquiring a first sensing voltage at a first electrode of the driving transistor within the first duration after the application of the first data voltage and before the driving transistor is switched off, and determining whether the first sensing voltage is equal to reference sensing voltage.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: April 19, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Danna Song, Yi Cheng Lin, Pan Xu, Zhongyuan Wu
  • Patent number: 11222592
    Abstract: A compensation method for an electroluminescent display panel, a driving device, a display device, and a storage medium are provided. The compensation method includes: receiving a first display data signal; performing an optical compensation operation on the first display data signal to obtain a second display data signal; performing an electrical compensation operation on the second display data signal to obtain a third display data signal; and outputting the third display data signal for display.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: January 11, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Ming I Chu, Zhongyuan Wu, Fei Yang, Song Meng, Danna Song
  • Publication number: 20210366388
    Abstract: A detection method of a pixel circuit, a display panel and a driving method thereof are provided. The detection method includes: during a reference charging period, applying a reference data voltage to a gate electrode of a driving transistor, and at a first time duration after applying the reference data voltage, obtaining a benchmark voltage from a sensing line; and during a data charging period, applying a detection data voltage different from the reference data voltage to the gate electrode of the driving transistor, and at the first time duration after applying the detection data voltage, obtaining an initial sensing voltage from the sensing line. A sensing voltage of the pixel circuit is obtained based on at least the benchmark voltage and the initial sensing voltage, and a threshold voltage of the driving transistor is obtained based on the sensing voltage.
    Type: Application
    Filed: January 15, 2019
    Publication date: November 25, 2021
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Danna SONG
  • Publication number: 20210335278
    Abstract: A detection method of a pixel circuit, a driving method of a display panel, and a display device are disclosed. The pixel circuit includes a driving transistor; and the detection method of the pixel circuit includes: in the first charge cycle, applying a first data voltage to a gate electrode of the driving transistor, acquiring a first sensing voltage at a first electrode of the driving transistor within the first duration after the application of the first data voltage and before the driving transistor is switched off, and determining whether the first sensing voltage is equal to reference sensing voltage.
    Type: Application
    Filed: August 24, 2018
    Publication date: October 28, 2021
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Danna SONG, Yi Cheng LIN, Pan XU, Zhongyuan WU
  • Patent number: 11069285
    Abstract: A luminance compensation method is configured to compensate luminance of a plurality of sub-pixels included in a display device. The luminance compensation method includes a curve generation and update process and a compensation process for each sub-pixel to be compensated. The curve generation and update process includes: detecting an actual luminance value of the sub-pixel to be compensated in real time; and generating an actual luminance curve showing how the actual luminance value of the sub-pixel to be compensated changes as a gray-scale value changes according to actual luminance values detected in real-time, and updating the actual luminance curve.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: July 20, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Danna Song
  • Patent number: 11011114
    Abstract: The present disclosure provides a compensation method, device, circuit for a display panel, a display panel and a display device. The display panel includes a plurality of pixel circuits, each of which comprises a driving transistor. The compensation method includes: obtaining a first compensation grayscale value GL1 and a second compensation grayscale value GL2 of a pixel circuit to be compensated; obtaining a first compensation luminance L1, a first gate-source voltage Vgs1 of the driving transistor, a second compensation luminance L2, and a second gate-source voltage Vgs2 of the driving transistor, wherein L1 and Vgs1 correspond to GL1, and L2 and Vgs2 correspond to GL2; obtaining a theoretical luminance L corresponding to an input grayscale value GL; calculating the compensation gate-source voltage V?gs by using L, L1, Vgs1, L2, and Vgs2; and obtaining an output compensation grayscale value GL? according to V?gs.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: May 18, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Song Meng, Zhongyuan Wu, Danna Song
  • Patent number: 10971052
    Abstract: A driving method and a driving device for a display panel, and a display device are provided. Each pixel of the display panel includes at least two primary-color sub-pixels of different colors and one mixed-color sub-pixel, and the driving method comprises: determining display power consumption according to the obtained brightness value of each of the primary-color sub-pixels; compensating for the brightness value of each of the primary-color sub-pixels according to the display power consumption; determining an output brightness value of each of the sub-pixels according to the compensated brightness value of each of the primary-color sub-pixels and a color coordinate of each of the sub-pixels; and outputting the output brightness value of each of the sub-pixels to a source driving circuit.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: April 6, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Danna Song
  • Patent number: 10937837
    Abstract: A display control method and apparatus, and a display apparatus. The method includes: acquiring an actual chromaticity coordinate of light of a mixed color sub pixel; calculating respective proportions of light of primary-color sub-pixels within the light of the mixed-color sub-pixel, according to the actual chromaticity coordinate of the light of the mixed-color sub-pixel and chromaticity coordinates of the light of the primary-color sub-pixels; and determining target luminance data of the mixed-color sub-pixel and target luminance data of the primary-color sub-pixels, according to initial luminance data of the primary-color sub-pixels and the respective proportions of the light of the primary-color sub-pixels within the light of the mixed-color sub-pixel.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: March 2, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Danna Song
  • Publication number: 20200410929
    Abstract: A luminance compensation method is configured to compensate luminance of a plurality of sub-pixels included in a display device. The luminance compensation method includes a curve generation and update process and a compensation process for each sub-pixel to be compensated. The curve generation and update process includes: detecting an actual luminance value of the sub-pixel to be compensated in real time; and generating an actual luminance curve showing how the actual luminance value of the sub-pixel to be compensated changes as a gray-scale value changes according to actual luminance values detected in real-time, and updating the actual luminance curve.
    Type: Application
    Filed: July 17, 2019
    Publication date: December 31, 2020
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Danna SONG
  • Publication number: 20200388219
    Abstract: The present disclosure provides a compensation method, device, circuit for a display panel, a display panel and a display device. The display panel includes a plurality of pixel circuits, each of which comprises a driving transistor. The compensation method includes: obtaining a first compensation grayscale value GL1 and a second compensation grayscale value GL2 of a pixel circuit to be compensated; obtaining a first compensation luminance L1, a first gate-source voltage Vgs1 of the driving transistor, a second compensation luminance L2, and a second gate-source voltage Vgs2 of the driving transistor, wherein L1 and Vgs1 correspond to GL1, and L2 and Vgs2 correspond to GL2; obtaining a theoretical luminance L corresponding to an input grayscale value GL; calculating the compensation gate-source voltage V?gs by using L, L1, Vgs1, L2, and Vgs2; and obtaining an output compensation grayscale value GL? according to V?gss.
    Type: Application
    Filed: August 31, 2018
    Publication date: December 10, 2020
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Song MENG, Zhongyuan WU, Danna SONG
  • Publication number: 20200357340
    Abstract: A compensation method for an electroluminescent display panel, a driving device, a display device, and a storage medium are provided. The compensation method includes: receiving a first display data signal; performing an optical compensation operation on the first display data signal to obtain a second display data signal; performing an electrical compensation operation on the second display data signal to obtain a third display data signal; and outputting the third display data signal for display.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 12, 2020
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Ming I CHU, Zhongyuan WU, Fei YANG, Song MENG, Danna SONG
  • Patent number: 10762845
    Abstract: A compensation method for an electroluminescent display panel, a driving device, a display device, and a storage medium are provided. The compensation method includes: receiving a first display data signal; performing an optical compensation operation on the first display data signal to obtain a second display data signal; performing an electrical compensation operation on the second display data signal to obtain a third display data signal; and outputting the third display data signal for display.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: September 1, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Ming I Chu, Zhongyuan Wu, Fei Yang, Song Meng, Danna Song
  • Publication number: 20200273913
    Abstract: A display control method and apparatus, and a display apparatus. The method includes: acquiring an actual chromaticity coordinate of light of a mixed color sub pixel; calculating respective proportions of light of primary-color sub-pixels within the light of the mixed-color sub-pixel, according to the actual chromaticity coordinate of the light of the mixed-color sub-pixel and chromaticity coordinates of the light of the primary-color sub-pixels; and determining target luminance data of the mixed-color sub-pixel and target luminance data of the primary-color sub-pixels, according to initial luminance data of the primary-color sub-pixels and the respective proportions of the light of the primary-color sub-pixels within the light of the mixed-color sub-pixel.
    Type: Application
    Filed: January 25, 2018
    Publication date: August 27, 2020
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Danna SONG
  • Patent number: 10741146
    Abstract: The present disclosure discloses an electroluminescent display screen and brightness uniformity compensation method and system thereof, wherein the method comprises: performing test modeling based on a correspondence between an aging rule of an electroluminescent diode in the display screen and an aging rule of a thin film transistor (TFT) in the display screen to acquire a brightness uniformity compensation model; acquiring a first compensation parameter and a second compensation parameter required for compensating the TFT, and acquiring a current brightness ratio of the electroluminescent diode through invoking the brightness uniformity compensation model based on the compensation parameters; performing brightness uniformity compensation on the display screen based on the acquired current brightness ratio of the electroluminescent diode.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: August 11, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Danna Song, Song Meng, Mingi Chu
  • Patent number: 10642523
    Abstract: A method and apparatus for updating data in a memory for electrical compensation, the method comprises: when a master chip receives a power-off signal, writing a serial number of a block being updated or a predetermined value into a nonvolatile memory. In the apparatus, only a nonvolatile memory is required to be provided external to a master chip to store the serial number of the block (the sequence of the block) being updated currently during power-off. Upon a next power-on, it is determined that which rows have their data lost during the previous power-off according to the serial number of the block, and then data of adjacent rows is used to replace the data of the rows which have their data lost during the previous power-off; therefore, the operation is simple and the efficiency is high, so that the time for updating the data is short, without affecting the memory's lifespan.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: May 5, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Song Meng, Fei Yang, Danna Song
  • Patent number: 10629126
    Abstract: The disclosure discloses a method for driving a pixel circuit, a drive device and a display device. The method includes: receiving grayscale data to be displayed; determining a voltage compensation value, which corresponds to theoretical drive voltage corresponding to the grayscale data to be displayed, according to a pre-acquired correspondence relationship between theoretical drive voltage corresponding to respective grayscale data, and corresponding voltage compensation values; wherein the voltage compensation value is a voltage drop caused by a detection transistor and a drive transistor in the pixel circuit; and compensating the theoretical drive voltage corresponding to the grayscale data to be displayed with the determined voltage compensation value, and then driving a light-emitting diode in the pixel circuit to emit light.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: April 21, 2020
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Lirong Wang, Quanhu Li, Fei Yang, Danna Song, Mingi Chu, Song Meng, Yu Wang, Yi Chen, Zhongyuan Wu