Patents by Inventor Yongqian Li

Yongqian Li 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).

  • Publication number: 20210193044
    Abstract: There is provided a driving method for a pixel circuit including a driving transistor, a data writing circuit, a sensing circuit, and a storage capacitor. The driving method includes: during a sensing write stage, writing a test voltage equal to a sum of a first reference voltage and a threshold voltage of the driving transistor, by the data writing circuit, to the control electrode of the driving transistor, and writing a second reference voltage, by the sensing circuit, to a second electrode of the driving transistor; during a sensing sampling stage, continuing to write the test voltage to the control electrode of the driving transistor by the data writing circuit, and stopping writing a voltage to the second electrode of the driving transistor by the sensing circuit. The driving method further includes a sensing reset stage and a sensing charging stage.
    Type: Application
    Filed: November 10, 2020
    Publication date: June 24, 2021
    Inventors: Song MENG, Yongqian LI
  • Patent number: 11037502
    Abstract: The present disclosure discloses a shift register and a driving method thereof, a gate driving circuit, an array substrate, and a display device. With a signal control circuit, a branch control circuit, a cascade signal output circuit and at least two scanning signal output circuits, each shift register can output at least two different scanning signals to correspond to different gate lines in an array substrate. This can reduce the number of shift registers in a gate drive circuit and the space occupied by the gate drive circuit and can achieve an ultra-narrow bezel design, as compared with an existing shift register that can only output one scan signal. Furthermore, as signals of different output control node do not influence each other, the stability of waveforms of the output scanning signals may also be improved, and a difference in the waveforms of the scanning signals is avoided.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: June 15, 2021
    Assignees: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Zhidong Yuan, Yongqian Li, Can Yuan, Enming Xie
  • 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
  • Publication number: 20210167162
    Abstract: The present disclosure relates to the field of display technologies, and provides an array substrate, a manufacturing method thereof, and a display panel.
    Type: Application
    Filed: November 29, 2019
    Publication date: June 3, 2021
    Inventors: Zhongyuan WU, Yongqian LI, Can YUAN, Meng LI, Zhidong YUAN, Xuehuan FENG, Lang LIU, Dacheng ZHANG
  • Publication number: 20210166597
    Abstract: The present disclosure provides a shift register unit and a method for driving the same, a gate driving circuit and a method for driving the same, and a display apparatus. The shift register unit includes a first input sub-circuit to an Nth input sub-circuit and a first output sub-circuit to an Nth output sub-circuit. N is an integer greater than or equal to 2. For n=1, 2, . . . , N, an nth input sub-circuit is electrically coupled to an nth input signal terminal, a first level signal terminal and a pull-up node, and an nth output sub-circuit is electrically coupled to an nth clock signal terminal, the pull-up node and an nth output signal terminal.
    Type: Application
    Filed: December 16, 2019
    Publication date: June 3, 2021
    Inventors: Xuehuan Feng, Yongqian Li, Xing Zhang
  • Publication number: 20210166621
    Abstract: A shift register unit, a gate driving circuit, a display device, and a driving method. The shift register unit includes a blanking input circuit, a display input circuit, an output circuit, and a compensation selection circuit. The blanking input circuit inputs a blanking input signal to a control node, and a blanking signal to a first node in a blanking period of a frame; the display input circuit inputs a display signal to the first node in a display period of the frame in response to a display input signal; the output circuit outputs, under the control of a level of the first node, a composite output signal to an output terminal; the compensation selection circuit is electrically coupled to the output terminal, and charges, in response to a compensation selection control signal, the control node using the composite output signal.
    Type: Application
    Filed: December 26, 2018
    Publication date: June 3, 2021
    Inventors: Xuehuan FENG, Yongqian LI
  • Publication number: 20210166603
    Abstract: A shift register includes an output sub-circuit, a cascade sub-circuit and at least one additional output sub-circuit. The output sub-circuit is configured to transmit a first clock signal received at the first clock signal terminal to the output signal terminal under control of a potential at the pull-up node, so as to scan a gate line coupled to the output signal terminal. The cascade sub-circuit is configured to transmit a second clock signal received at the second clock signal terminal to the cascade node under the control of the potential at the pull-up node. Each additional output sub-circuit is configured to transmit a clock signal received at a corresponding clock signal terminal to a corresponding additional output signal terminal under control of a potential at the cascade node, so as to scan a gate line coupled to the corresponding additional output signal terminal.
    Type: Application
    Filed: August 8, 2019
    Publication date: June 3, 2021
    Inventors: Xuehuan FENG, Yongqian LI
  • Publication number: 20210166633
    Abstract: The present disclosure provides a shift register unit, including a detection signal input sub-circuit, a display signal input sub-circuit, an output circuit, a pull-down control circuit and a signal output terminal, the output circuit includes a pull-up sub-circuit and a pull-down sub-circuit, the pull-down control circuit includes a selection sub-circuit and a plurality of pull-down control sub-circuits. The present disclosure further provides a gate driving circuit, a display panel and a driving method for driving the display panel. The shift register unit has a simple structure and a long service life.
    Type: Application
    Filed: November 5, 2019
    Publication date: June 3, 2021
    Inventors: Xuehuan FENG, Yongqian LI
  • Publication number: 20210167155
    Abstract: A thin-film transistor includes a substrate, and a light-shielding layer and an active layer sequentially over the substrate. The light-shielding layer has an accommodating space having a bottom wall and a side wall on an upper surface thereof. An orthographic projection of the active layer on the substrate is contained within an orthographic projection of the accommodating space of the light-shielding layer on the substrate. An upper side of the side wall of the accommodating space of the light-shielding layer has a larger distance to the substrate than a bottom surface, and optionally has an equal or larger distance to the substrate than a top surface, of the active layer. The light-shielding layer can comprise a gate electrode. As such, lights from an underneath and from a lateral side of the thin-film transistor that otherwise reach the active layer can be partially or completely blocked.
    Type: Application
    Filed: December 18, 2017
    Publication date: June 3, 2021
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Pan XU, Yongqian LI, Zhidong YUAN, Zhenfei CAI, Can YUAN, Meng LI
  • Patent number: 11024234
    Abstract: Embodiments of the present disclosure provide a signal combination circuit, a gate driving unit, a gate driving circuit, and a display device, the signal combination circuit includes a first active level output circuit configured to write an active-level voltage to a driving signal output terminal in a case where a signal provided by a first signal output terminal or a second signal output terminal is at an active level, and a first inactive level output circuit configured to write an inactive-level voltage to the driving signal output terminal in a case where the signals provided by the first signal output terminal and the second signal output terminal are at an inactive level. The signal combination circuit of the embodiments of the disclosure can realize the combination of the single pulse signals output by two shift registers, thereby outputting a double-pulse driving signal.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: June 1, 2021
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhidong Yuan, Yongqian Li, Can Yuan, Min He
  • Patent number: 11024235
    Abstract: A shift register unit, a method for driving a shift register unit, a gate driving circuit, and a display device are provided. The shift register unit includes a blanking input circuit, a display input circuit, and an output circuit. The blanking input circuit is configured to, according to a blanking input signal and a blanking control signal, input a blanking pull-up signal to a first control node in a blanking period, and compensate the blanking input circuit; the display input circuit is configured to input a display pull-up signal to the first control node in a display period in response to a display input signal; and the output circuit is configured to output a composite output signal to an output terminal.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: June 1, 2021
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xuehuan Feng, Yongqian Li
  • Publication number: 20210158742
    Abstract: A shift register unit, a gate driving circuit, a display device, and a driving method are disclosed. The shift register unit includes a blanking unit, a first transmission circuit, a second transmission circuit, a first input-output unit, and a second input-output unit. The blanking unit is configured to charge a pull-up control node in response to a compensation selecting control signal and input a blanking a pull-up signal to a blanking pull-up node. The first transmission circuit is electrically connected to the blanking pull-up node and the first pull-up node, and is configured to charge the first pull-up node, by using the blanking pull-up signal, in response to a first transmission signal.
    Type: Application
    Filed: July 16, 2019
    Publication date: May 27, 2021
    Applicants: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11017711
    Abstract: The present disclosure provides a gate driving circuit and a driving method, and a display device. The gate driving circuit includes: a plurality of first gate driving units, ith first gate driving unit being configured to output a first gate driving signal to ith row of gate line in a display phase; a plurality of first control modules, mth first control module being configured to control mth second gate driving unit to output a second gate driving signal to mth row of gate line in a vertical blanking phase; nth first control module being configured to control nth second gate driving unit not to output the second gate driving signal in the vertical blanking phase; a plurality of second control modules, kth second control module being configured to control kth second gate driving unit not to output the second gate driving signal in the vertical blanking phase.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: May 25, 2021
    Assignees: Hefei Xmsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Can Yuan, Yongqian Li, Zhidong Yuan, Meng Li
  • Patent number: 11017872
    Abstract: A gate driving circuit includes M levels of shift registers. Each level of shift register includes a first register unit and a second register unit. The first register units of the M levels of shift registers are connected to each other in a cascaded manner, the second register units of the M levels of shift registers are connected to each other in a cascaded manner, and an output end of the first register unit and an output end of the second register unit of each level of shift register are electrically connected to an output end of the level of shift register, where M is a positive integer greater than or equal to 1.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: May 25, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yongqian Li, Zhidong Yuan
  • Publication number: 20210150988
    Abstract: The present disclosure discloses a shift register, a driving method thereof, a gate drive circuit, an array substrate and a display device. With a signal control circuit, a branch control circuit, a cascade signal output circuit and at least two scan signal output circuits, each shift register can output at least two scan signals to correspond to different gate lines in a display panel. This can reduce the number of shift registers in a gate drive circuit and the space occupied by the gate drive circuit and can achieve an ultra-narrow frame design, as compared with an existing shift register that can only output one scan signal. Moreover, as signals of different output control node do not influence each other, the output stability can also be improved.
    Type: Application
    Filed: July 29, 2019
    Publication date: May 20, 2021
    Inventors: Zhidong YUAN, Yongqian LI, Meng LI, Can YUAN
  • Publication number: 20210150986
    Abstract: The application provides a pixel driving method, a pixel driving device and a display device. The method includes steps of: obtaining a brightness sum of a frame according to a brightness of each of pixels in the frame; inquiring a data voltage compensation value corresponding to the obtained brightness sum from a preset first correspondence relationship, the first correspondence relationship including a one-to-one correspondence relationship between the brightness sum and the data voltage compensation value for one frame; compensating a data voltage of the frame according to the data voltage compensation value to generate a compensated data voltage; and outputting the compensated data voltage to a display panel.
    Type: Application
    Filed: September 27, 2018
    Publication date: May 20, 2021
    Inventors: Yongqian LI, Zhongyuan WU
  • Publication number: 20210142713
    Abstract: A shift register unit, a driving method thereof, a gate driving circuit and a display device. The shift register unit includes a blanking input circuit, a display input circuit, an output circuit, a first control circuit and a second control circuit. The blanking input circuit inputs a blanking pull-up signal to a first node according to a blanking input signal; the display input circuit inputs a display pull-up signal to the first node in response to a display input signal; the output circuit outputs an composite output signal to an output terminal under the control of the first node; the first control circuit controls a level of a second node under the control of the first node; and the second control circuit controls the level of the second node in response to a blanking pull-down control signal.
    Type: Application
    Filed: December 14, 2018
    Publication date: May 13, 2021
    Inventors: Xuehuan FENG, Yongqian LI
  • Publication number: 20210134230
    Abstract: The present disclosure provides an organic light emitting diode (OLED) display device and control method thereof. The OLED display device includes: a plurality of subpixels that are arranged in an array having a plurality of rows and a plurality of columns, wherein at least one of the subpixels comprises a control transistor, a light emitting element, and a drive transistor for driving the light emitting element; a plurality of detection lines, wherein at least one of the detection lines is electrically connected with the control transistors of subpixels in a same column, for detecting an electrical property of the drive transistors of subpixels in the same column through respective control transistors; and a plurality of group detection control lines, wherein at least one of the group detection control lines is electrically connected with control transistors of a subpixel group, the subpixel group comprising subpixels in a first row and subpixels in a second row.
    Type: Application
    Filed: July 18, 2019
    Publication date: May 6, 2021
    Applicants: Hefei BOE Joint Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhidong YUAN, Can YUAN, Yongqian LI
  • Patent number: 10998067
    Abstract: The embodiments of the present disclosure provide a shift register, a driving method thereof, a gate driving circuit, and a display panel. The shift register includes a plurality of shift register units and a first pulling-down circuit. Each shift register unit includes a first outputting circuit and a second outputting circuit. The first outputting circuit is coupled to a first outputting terminal of the shift register unit, and the second outputting circuit is coupled to a second outputting terminal of the shift register unit. The first outputting terminal of the shift register unit is coupled to the first pulling-down circuit via a first unidirectional isolating circuit, and the second outputting terminal of each shift register unit is coupled to the first pulling-down circuit via a second unidirectional isolating circuit, so that the first outputting terminal and the second outputting terminal of each shift register unit are isolated from each other.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: May 4, 2021
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan Feng, 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