Patents by Inventor Zhidong Yuan

Zhidong Yuan 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: 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: 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
  • Publication number: 20210125568
    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: Application
    Filed: October 27, 2020
    Publication date: April 29, 2021
    Inventors: Can YUAN, Yongqian LI, Zhidong YUAN
  • Publication number: 20210125564
    Abstract: Provided are a shift register unit and a control method thereof, a gate driving circuit and a control method thereof, and a display apparatus. The shift register unit may include: a first shift register coupled to an input signal terminal, a first clock signal terminal and a second clock signal terminal. The first shift register is configured to generate a first output signal based on the signal at the first clock signal terminal and generate a second output signal based on the signal at the second clock signal terminal; and a second shift register coupled to the input signal terminal and a third clock signal terminal, the second shift register is configured to generate a third output signal based on the signal at the third clock signal terminal; and a pull-up node of the first shift register is coupled to a pull-up node of the second shift register.
    Type: Application
    Filed: January 3, 2020
    Publication date: April 29, 2021
    Inventors: Zhidong Yuan, Yongqian Li, Can Yuan
  • Patent number: 10984714
    Abstract: A method and an apparatus of compensating a display device, and the display device are provided. The display device includes pixel units in multiple rows and multiple columns, each of the pixel units includes sub-pixels having different colors, and each of the sub-pixels includes a pixel driving circuit and a light-emitting element connected to the pixel driving circuit, the pixel driving circuit includes a sensing line for sensing an electrical signal from the light-emitting element. The method includes: sensing electrical signals from light-emitting elements of sub-pixels having at least two different colors by using sensing lines corresponding to the sub-pixels having the at least two different colors within a display period of each image frame, wherein the subpixels having the at least two different colors are within different pixel units of the pixel units.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: April 20, 2021
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Haixia Xu, Zhidong Yuan, Min He, Wei Chen
  • Publication number: 20210097933
    Abstract: Provided are a pixel structure, a display panel and a control method thereof. The pixel structure includes four sub-pixel units, wherein the i-th sub-pixel unit includes: an i-th element to be driven and an i-th drive circuit, 1?i?4, and the i-th drive circuit is respectively connected with an M-th data line and an N-th scanning line, and is configured to drive the i-th element to be driven according to a data signal of the M-th data line under control of the N-th scanning line, M = { 1 , 1 ? i ? 2 2 , 3 ? i ? 4 , N = { 1 , 2 ? i ? 3 2 , i ? ? is ? ? 1 ? ? or ? ? 4 .
    Type: Application
    Filed: June 30, 2020
    Publication date: April 1, 2021
    Inventors: Zhidong YUAN, Yongqian LI, Song MENG, Can YUAN
  • Publication number: 20210090518
    Abstract: A shift register unit includes a pull-down sustaining sub-circuit and a pull-down sub-circuit. The pull-down sustaining sub-circuit includes: a first transistor having a control electrode configured to input a pull-down sustaining signal, a first electrode connected to a first power signal terminal, and a second electrode connected to a pull-down node; a first capacitor; and a second transistor having a control electrode connected to an input signal terminal. The pull-down sub-circuit includes: a third transistor having a control electrode connected to the first terminal of the first capacitor, a first electrode connected to a pull-up node, and a second electrode connected to the second power signal terminal; a fourth transistor having a control electrode connected to the first terminal of the first capacitor, a first electrode connected to an output sub-circuit, and a second electrode connected to the second power signal terminal.
    Type: Application
    Filed: August 21, 2020
    Publication date: March 25, 2021
    Inventors: Zhidong Yuan, Yongqian Li, Can Yuan
  • Publication number: 20210074210
    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: Application
    Filed: April 3, 2020
    Publication date: March 11, 2021
    Applicants: 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
  • Publication number: 20210049968
    Abstract: Embodiments of the present disclosure provide a pixel circuit, a display panel, and a display device. The pixel circuit includes: a first transistor; a light emitting unit, a cathode being grounded; a second transistor; a third transistor; a fourth transistor; and a capacitor, a first terminal being coupled to the control electrode of the third transistor, and a second terminal being coupled to the second electrode of the third transistor.
    Type: Application
    Filed: March 19, 2020
    Publication date: February 18, 2021
    Inventors: Zhidong Yuan, Yongqian Li, Can Yuan, Song Meng
  • Publication number: 20210049964
    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: Application
    Filed: April 23, 2020
    Publication date: February 18, 2021
    Inventors: Zhidong Yuan, Yongqian Li, Can Yuan, Chao Jiao
  • Patent number: 10923041
    Abstract: The present disclosure provides a detection method and a detection device for an array substrate driving circuit. In the detection method, in an all-on stage, a first supply voltage signal is input to a power terminal, a first data voltage signal is input to a data input terminal, a first sensing voltage signal is input to a sensing voltage terminal, a first gate-on signal is input to a first gate terminal, and a second gate-on signal is input to a second gate terminal. In a data voltage changing stage, the first data voltage signal is changed to a second data voltage signal. In a measurement stage, a voltage at a first electrode terminal of the light emitting device is measured, and the measured voltage is compared with a theoretical voltage to determine whether the array substrate driving circuit is normal.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: February 16, 2021
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Zhidong Yuan, Yongqian Li
  • Patent number: 10916170
    Abstract: The present disclosure provides a gate driving circuit and a driving method thereof as well as a display device. The gate driving circuit comprises a driving circuit connected to a gate line for outputting a gate scanning signal; and a detecting circuit connected to the gate line for collecting and recording the gate scanning signal.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: February 9, 2021
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Meng Li, Yongqian Li, Zhidong Yuan, Can Yuan
  • Publication number: 20210005692
    Abstract: An array substrate, a display panel and a display device are provided. The array substrate includes a plurality of pixel units arranged in an array, each pixel unit includes a first sub-pixel, a second sub-pixel and a third sub-pixel, and each of the first, second and third sub-pixels includes a pixel circuit including a switching transistor, a driving transistor, a sensing transistor, a storage capacitor and a light-emitting device. The first sub-pixels, the second sub-pixels and the third sub-pixels included in each row of the array are controlled by four scanning lines, and at least one of the four scanning lines is shared by the row of the array and another row of the array adjacent to the row of the array. Each column of pixel units of the array are coupled to a same data line.
    Type: Application
    Filed: May 26, 2020
    Publication date: January 7, 2021
    Inventors: Can YUAN, Yongqian LI, Zhidong YUAN
  • Publication number: 20210005127
    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: Application
    Filed: August 27, 2020
    Publication date: January 7, 2021
    Applicants: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhidong YUAN, Yongqian LI, Can YUAN
  • Patent number: 10872545
    Abstract: Provided are a detection method and apparatus for a display panel, a detection device and a storage medium. The method includes: providing a second data signal to a data input end, providing a second gate line scan signal to a gate electrode scan input end, and providing a power source signal to a power source end, wherein during an inputting process, the second data signal is at a first level, a level of the second gate line scan signal jumps from the first level to a second level, a level of the power source signal jumps from the first level to the second level, and the level of the second gate line scan signal jumps before the jumping of the level of the power source signal; acquiring a second voltage of each pixel electrode; and determining a faulty gate line according to the second voltage.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: December 22, 2020
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD, BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Tao Wang, Zhidong Yuan, Sheng Zhu, Zhengyuan Zhang, Peng Sui, Jun Zhang, Qiao Zhu
  • Patent number: 10872568
    Abstract: A pixel circuit, a driving method and a display device. The pixel circuit includes a light emitting unit; a drive transistor configured to drive the light emitting unit to emit light to display an image frame; and a control circuit configured to control the drive transistor according to signals on control lines. The method of controlling includes: resetting, in a reset stage of an image frame, a voltage of the first electrode of the drive transistor by applying a reset voltage, and sensing, in a sense stage, a threshold voltage of the drive transistor by applying a reference voltage. The control circuit is further configured to control, in an offset elimination stage at the beginning of the image frame and prior to the reset stage, the drive transistor to be switched off, which was in an ON state at the end of a previous image frame.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: December 22, 2020
    Assignees: HEFIE XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhidong Yuan, Yongqian Li, Meng Li, Can Yuan, Haixia Xu, Jun Wang, Xuehuan Feng
  • Publication number: 20200394965
    Abstract: The present disclosure provides a detection method and a detection device for an array substrate driving circuit. In the detection method, in an all-on stage, a first supply voltage signal is input to a power terminal, a first data voltage signal is input to a data input terminal, a first sensing voltage signal is input to a sensing voltage terminal, a first gate-on signal is input to a first gate terminal, and a second gate-on signal is input to a second gate terminal. In a data voltage changing stage, the first data voltage signal is changed to a second data voltage signal. In a measurement stage, a voltage at a first electrode terminal of the light emitting device is measured, and the measured voltage is compared with a theoretical voltage to determine whether the array substrate driving circuit is normal. This realizes the detection of a data line of the driving circuit.
    Type: Application
    Filed: October 31, 2018
    Publication date: December 17, 2020
    Inventors: Zhidong YUAN, Yongqian LI
  • Publication number: 20200394960
    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: Application
    Filed: July 29, 2019
    Publication date: December 17, 2020
    Inventors: Zhidong YUAN, Yongqian LI, Can YUAN, Enming XIE
  • Publication number: 20200372965
    Abstract: The embodiments of the present disclosure propose a shift register and a method for driving the same, a gate driving circuit, and a display apparatus. The shift register includes: a scanning circuit configured to generate a first signal for causing a gate driving signal output by the shift register to have a row shift portion during a scanning period; a sensing circuit configured to generate a second signal for causing the gate driving signal to have a frame shift portion during a blanking period; and a random shift circuit electrically coupled to the scanning circuit and the sensing circuit respectively, and configured to generate the gate driving signal having the row shift portion and randomly having the frame shift portion based on the first signal and the second signal.
    Type: Application
    Filed: October 25, 2019
    Publication date: November 26, 2020
    Inventors: Zhidong YUAN, Yongqian LI, Can YUAN
  • Patent number: 10825413
    Abstract: A shift register circuit, a gate driving circuit and a method for driving the same, and a display apparatus are disclosed.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: November 3, 2020
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Can Yuan, Yongqian Li, Zhidong Yuan