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).
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Patent number: 11776438Abstract: 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: GrantFiled: October 31, 2018Date of Patent: October 3, 2023Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Danna Song
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Publication number: 20230206792Abstract: A detecting method of a pixel circuit, a driving method of a display panel and a display device are provided.Type: ApplicationFiled: October 31, 2018Publication date: June 29, 2023Inventor: Danna SONG
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Patent number: 11348552Abstract: 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: GrantFiled: January 23, 2019Date of Patent: May 31, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Danna Song
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Patent number: 11308875Abstract: 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: GrantFiled: January 15, 2019Date of Patent: April 19, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Danna Song
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Patent number: 11308889Abstract: 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: GrantFiled: August 24, 2018Date of Patent: April 19, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Danna Song, Yi Cheng Lin, Pan Xu, Zhongyuan Wu
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Patent number: 11222592Abstract: 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: GrantFiled: July 24, 2020Date of Patent: January 11, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Ming I Chu, Zhongyuan Wu, Fei Yang, Song Meng, Danna Song
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Publication number: 20210366388Abstract: 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: ApplicationFiled: January 15, 2019Publication date: November 25, 2021Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Danna SONG
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Publication number: 20210335278Abstract: 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: ApplicationFiled: August 24, 2018Publication date: October 28, 2021Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Danna SONG, Yi Cheng LIN, Pan XU, Zhongyuan WU
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Patent number: 11069285Abstract: 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: GrantFiled: July 17, 2019Date of Patent: July 20, 2021Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Danna Song
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Patent number: 11011114Abstract: 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: GrantFiled: August 31, 2018Date of Patent: May 18, 2021Assignee: BOE Technology Group Co., Ltd.Inventors: Song Meng, Zhongyuan Wu, Danna Song
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Patent number: 10971052Abstract: 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: GrantFiled: September 27, 2018Date of Patent: April 6, 2021Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Danna Song
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Patent number: 10937837Abstract: 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: GrantFiled: January 25, 2018Date of Patent: March 2, 2021Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Danna Song
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Publication number: 20200410929Abstract: 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: ApplicationFiled: July 17, 2019Publication date: December 31, 2020Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Danna SONG
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Publication number: 20200388219Abstract: 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: ApplicationFiled: August 31, 2018Publication date: December 10, 2020Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Song MENG, Zhongyuan WU, Danna SONG
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Publication number: 20200357340Abstract: 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: ApplicationFiled: July 24, 2020Publication date: November 12, 2020Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Ming I CHU, Zhongyuan WU, Fei YANG, Song MENG, Danna SONG
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Patent number: 10762845Abstract: 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: GrantFiled: August 22, 2018Date of Patent: September 1, 2020Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Ming I Chu, Zhongyuan Wu, Fei Yang, Song Meng, Danna Song
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Publication number: 20200273913Abstract: 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: ApplicationFiled: January 25, 2018Publication date: August 27, 2020Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Danna SONG
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Patent number: 10741146Abstract: 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: GrantFiled: September 20, 2017Date of Patent: August 11, 2020Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Danna Song, Song Meng, Mingi Chu
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Patent number: 10642523Abstract: 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: GrantFiled: May 17, 2017Date of Patent: May 5, 2020Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Song Meng, Fei Yang, Danna Song
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Patent number: 10629126Abstract: 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: GrantFiled: July 24, 2018Date of Patent: April 21, 2020Assignee: BOE Technology Group Co., Ltd.Inventors: Lirong Wang, Quanhu Li, Fei Yang, Danna Song, Mingi Chu, Song Meng, Yu Wang, Yi Chen, Zhongyuan Wu