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: 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
  • Patent number: 11151945
    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: Grant
    Filed: July 18, 2019
    Date of Patent: October 19, 2021
    Assignees: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Zhidong Yuan, Can Yuan, Yongqian Li
  • Publication number: 20210319742
    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 selection control signal and input a blanking 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 the second transmission circuit is electrically connected to the blanking pull-up node and the second pull-up node.
    Type: Application
    Filed: June 23, 2021
    Publication date: October 14, 2021
    Applicants: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11139357
    Abstract: An OLED display substrate, a manufacturing method thereof, and a display device are provided. The manufacturing method includes forming a PIN photodiode on a base substrate, forming an insulative protection layer covering the PIN photodiode, and forming an oxide TFT. The PIN photodiode is formed prior to the formation of an active layer of the oxide TFT, and the insulative protection layer covering the PIN photodiode is formed prior to the formation of a source electrode and a drain electrode of the oxide TFT.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: October 5, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Pan Xu, Yicheng Lin, Cuili Gai, Ling Wang, Yongqian Li
  • Patent number: 11132947
    Abstract: Disclosed is a display substrate and a display apparatus, the display substrate includes a display area and a peripheral area, wherein the display substrate includes M groups of shift registers and N groups of clock signal lines in the peripheral area, M is greater than or equal to N, M and N are positive integers, each group of shift registers is connected with a group of gate lines positioned in the display area, and adjacent N groups of shift registers are connected with N groups of clock signal lines one by one correspondingly. The N groups of clock signal lines are disposed side by side along a first direction, and configured to make, through an adjustment of a wiring sequence, an impedance difference between two groups of clock signal lines connected to any two adjacent groups of shift registers be less than or equal to an impedance threshold value.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: September 28, 2021
    Assignees: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xuehuan Feng, Yongqian Li, Yubao Kong
  • Patent number: 11133079
    Abstract: A shift register unit includes an input module, a first output module, a first pull-down module, a reset module, and a leakage-proof module. The input module is coupled to a pull-up node, a control signal terminal, and an input signal terminal. The first output module is coupled to the pull-up node, a first output terminal, and a second clock signal terminal. The first pull-down module is coupled to the first output terminal, a first signal terminal, and a first clock signal terminal. The reset module is coupled to a reset signal terminal, the pull-up node, and the first output terminal. The leakage-proof module is coupled to a second signal terminal, the first node, and the pull-up node.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: September 28, 2021
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhidong Yuan, Yongqian Li, Can Yuan, Meng Li, Xuelian Cheng
  • Patent number: 11127355
    Abstract: Provided is shift register including signal input circuits, reset circuits and control and output circuit. Operation cycle of shift register is divided into phases non-overlapping in time, each phase includes at least first and second sub-phases. Signal input circuits are each configured to apply signal provided by respective signal input terminal to pull-up control terminal in first sub-phase of respective phase in response to signal of respective input control terminal. The reset circuits are each configured to apply first power supply signal provided by first power supply terminal to the pull-up control terminal in second sub-phase of respective phase in response to signal of respective reset control terminal. The input circuits and the reset circuits share the control and output circuit outputting a signal based on signal of the pull-up control terminal, the waveform of the signal being superposition of waveforms corresponding to signals provided by the signal input circuits.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: September 21, 2021
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11127359
    Abstract: The present disclosure provides a display panel, a method thereof and a display device. The display panel includes a gate line group, a gate driving circuit, and a sub-pixel unit group. The sub-pixel unit group includes N rows of sub-pixel units, the gate line group includes (N+1) gate lines. The sub-pixel unit includes a light emitting unit, a pixel driving circuit, and a sensing circuit. The gate driving circuit includes output terminals, and is configured to sequentially output gate scanning signals through the output terminals. Each gate line is coupled to one corresponding output terminal. In the sub-pixel unit group, the pixel driving circuit in a sub-pixel unit in an n-th row is coupled to an n-th gate line; and the sensing circuit in the sub-pixel unit in the n-th row is coupled to a (n+1)-th gate line, where 1?n?N, and n is an integer.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: September 21, 2021
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Can Yuan, Yongqian Li, Zhidong Yuan
  • Publication number: 20210287611
    Abstract: The present disclosure provides a shift resister unit, a gate driving circuit, a display device, and a method for controlling a shift register unit. The shift register unit incudes a first input sub-circuit, a first output sub-circuit, a first reset sub-circuit, a second input sub-circuit, and a third input sub-circuit. The first input sub-circuit is configured to change a potential of a first node in a first phase. The first output sub-circuit is configured to output a gate driving signal in the first phase and output a compensation driving signal in a second phase. The first reset sub-circuit is configured to reset the first node. The second input sub-circuit is configured to change a potential of a second node in the first phase and maintain the potential of the second node. The third input sub-circuit is configured to change the potential of the first node in the second phase.
    Type: Application
    Filed: June 12, 2020
    Publication date: September 16, 2021
    Applicants: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan FENG, Yongqian LI
  • Patent number: 11120746
    Abstract: A shift register unit, a gate driving circuit, a display device and a driving method are provided. The shift register unit includes a first input circuit, an output circuit, a first control circuit, a first reset circuit, a second input circuit, a transmission circuit, and a storage circuit. The first input circuit is configured to control a level of a first node, the output circuit is configured to provide an output signal at an output terminal, the first control circuit is configured to control a level of a second node under control of the level of the first node, the first reset circuit is configured to reset the first node and the output terminal under control of the level of the second node, and the storage circuit is electrically connected to the second node, and is configured to stabilize the level of the second node.
    Type: Grant
    Filed: January 19, 2020
    Date of Patent: September 14, 2021
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11114027
    Abstract: The present application discloses a pixel circuit, including a data-input sub-circuit configured to apply a data voltage from the data line to a first node; a reset sub-circuit configured to reset the second node; a driving-control sub-circuit coupled to a first power supply, the first node, and the second node; a power-storage sub-circuit configured to regulate a voltage difference between the first node and the second node; a light-emitting device coupled to the second node and a second power supply; and a sampling sub-circuit coupled to the data line and the second node and being configured to control the data line to connect with the second node for collecting a voltage signal containing information about electrical properties of the driving-control sub-circuit and being used to generating a compensation voltage for compensating any drifts of the electrical properties.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: September 7, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Can Yuan, Yongqian Li, Pan Xu, Zhidong Yuan, Zhenfei Cai
  • Patent number: 11114010
    Abstract: A circuit includes an input sub-circuit configured to transmit an input signal from an input signal terminal to a feedback node under control of a first clock signal from a first clock signal terminal; a pull-up node control sub-circuit configured to transmit a feedback signal of the feedback node to a pull-up node under control of a first clock signal from the first clock signal terminal; a feedback sub-circuit configured to transmit a first voltage signal from a first voltage signal terminal to the feedback node under control of the pull-up node; an output sub-circuit configured to transmit a second clock signal from a second clock signal terminal to an output signal terminal under control of the pull-up node; and a pull-down sub-circuit configured to transmit a second voltage signal from a second voltage signal terminal to the output signal terminal under control of a pull-down node.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: September 7, 2021
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhidong Yuan, Yongqian Li, Can Yuan
  • Patent number: 11107414
    Abstract: An electronic panel, a display device and a driving method are disclosed. In the electronic panel, each row of subpixel units is divided into a plurality of subpixel unit groups, and each subpixel unit group includes a first subpixel unit and a second subpixel unit. The first subpixel unit includes a first light emitter unit, a first pixel driving circuit for driving the first light emitter unit to emit light, and a first sensing circuit for sensing the first pixel driving circuit; the second subpixel unit includes a second light emitter unit, a second pixel driving circuit for driving the second light emitter unit to emit light, and a second sensing circuit for sensing the second pixel driving circuit.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: August 31, 2021
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan Feng, Can Yuan, Yongqian Li
  • Patent number: 11107545
    Abstract: This application discloses a shift register, a gate drive circuit and a display device. The signal of the input signal terminal is provided to the pull-up node by the input circuit under the control of the input signal terminal; and the signal of the second reference signal terminal is provided to the output signal terminal by the output circuit under the control of the clock signal terminal and the signal of the pull-up node. The signal of the first reference signal terminal is provided to the pull-up node by the reset circuit under the control of the input signal terminal and the clock signal terminal. The pull-down control circuit resets the output signal terminal according to the signal of the first reference signal terminal.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: August 31, 2021
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Can Yuan, Zhidong Yuan, Yongqian Li
  • Patent number: 11107410
    Abstract: The present disclosure discloses a pixel circuit and a method of controlling the same. The pixel circuit includes: a light-emitting control sub-circuit, configured to transmit a data voltage at a data signal terminal to a first node under control of a first control terminal; a driving sub-circuit, configured to transmit a first power supply voltage at a first power supply terminal VDD to a second node N2 under control of a voltage at the first node; a first sensing sub-circuit, configured to maintain a voltage at the second node to be at a fixed level under control of the first control terminal; a second sensing sub-circuit, configured to transmit the voltage at the second node to a first sensing signal terminal under control of a second control terminal, so that the first sensing signal terminal senses a voltage associated with a threshold voltage of the driving sub-circuit.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: August 31, 2021
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhidong Yuan, Yongqian Li, Can Yuan, Chao Jiao
  • Publication number: 20210257393
    Abstract: A thin film transistor structure and a manufacturing method thereof, a circuit structure, a display substrate and a display device are provided. The thin film transistor structure includes: a base plate, and a first thin film transistor and a second thin film transistor stacked on the base plate. The first thin film transistor and the second thin film transistor share a same active layer.
    Type: Application
    Filed: March 14, 2018
    Publication date: August 19, 2021
    Applicants: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Can YUAN, Zhenfei CAI, Yongqian LI, Pan XU, Zhidong YUAN, Meng LI, Xuehuan FENG
  • Publication number: 20210256889
    Abstract: An array substrate and a testing method thereof are provided. The array substrate includes a plurality of clock signal lines and a plurality of testing terminals. As at least two of the plurality of clock signal lines may be connected to a same testing terminal, as compared with the arrangement of the related art in which one clock signal line is connected to one testing terminal, the array substrates provided by the embodiments of the present disclosure only need to have less testing terminals, and correspondingly, the testing device that is connected to the testing terminals of the array substrate provided by the embodiments of the present disclosure may contain less pins. Therefore, the testing device can have a relatively low production cost and a relatively small volume.
    Type: Application
    Filed: June 2, 2020
    Publication date: August 19, 2021
    Inventors: Zhidong Yuan, Yongqian Li, Can Yuan
  • Publication number: 20210259086
    Abstract: A display panel and a display apparatus are disclosed. The display panel comprises: a plurality of signal lines extending in a first direction; at least one first reference voltage bus which extends in a second direction intersecting the first direction; and a plurality of electrostatic discharge units divided into a plurality of electrostatic discharge unit groups, wherein the plurality of electrostatic discharge unit groups are arranged in the second direction and each of the plurality of electrostatic discharge unit groups comprises at least two electrostatic discharge units arranged in the first direction, wherein at least one of the plurality of signal lines is electrically connected to the first reference voltage bus through at least one of the plurality of electrostatic discharge units.
    Type: Application
    Filed: December 23, 2020
    Publication date: August 19, 2021
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Pan Xu, Yongqian Li, Guoying Wang, Dacheng Zhang, Lang Liu
  • Patent number: 11094253
    Abstract: A pixel driving circuit, array substrate, display device and method for driving the pixel driving circuit are provided, the circuit includes: a control terminal and a first terminal of a driving switch circuit are respectively coupled to a first terminal of a data input switch circuit and an anode of a light-emitting device, and two terminals of a storage capacitor are respectively coupled to the control terminal of the driving switch circuit and the anode of the light-emitting device, two terminals of an intrinsic capacitor are respectively coupled to a cathode and the anode of the light-emitting device, a first terminal and a second terminal of a reset switch circuit are respectively coupled to the anode and the cathode of the light-emitting device, a capacitance of the intrinsic capacitor is greater than or equal to a preset multiple of a capacitance of the storage capacitor.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: August 17, 2021
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhidong Yuan, Taejin Kim, Yongqian Li, Lin Sun, Chao Jiao, Can Yuan, Zehua Ding, Xuehuan Feng, Meng Li
  • Patent number: 11087668
    Abstract: Embodiments of the present disclosure provide a shift register unit and a driving method thereof, and a gate driving circuit. The shift register unit includes an input circuit, a next-stage start circuit, a control circuit, a stabilization circuit, and at least one output circuit. The at least one output circuit each can control a voltage of a signal output terminal according to a voltage of a pull-up node, a voltage of a pull-down node, a first voltage signal, a control clock signal from a control clock signal terminal, and a control voltage signal from a control voltage signal terminal. A high level of a second clock signal begins when a high level of a first clock signal ends, and a high level of a third clock signal begins when a high level of the second clock signal ends.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: August 10, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Meng Li, Yongqian Li, Zhidong Yuan, Can Yuan, Zhenfei Cai, Xuehuan Feng