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: 20190165296
    Abstract: An OLED display panel, a method for producing the same and a display device are provided. The OLED display panel includes: a substrate; and a plurality of sub-pixel areas on the substrate, each of the plurality of sub-pixel areas including a light emitting region and a non-light emitting region, wherein a plurality of insulation layers are in the non-light emitting region and a light emitting assembly is in the light emitting region, and wherein at most two insulation layers of the plurality of insulation layers extend from the non-light emitting region into the light emitting region between the light emitting assembly and the substrate, and wherein total number of the plurality of insulation layers in the non-light emitting region is greater than number of the insulation layers extending from the non-light emitting region into the light emitting region between the light emitting assembly and the substrate.
    Type: Application
    Filed: May 14, 2018
    Publication date: May 30, 2019
    Inventors: Zhidong Yuan, Yongqian LI, Can Yuan, Meng Li, Zhenfei Cai, Xuehuan Feng
  • Publication number: 20190164481
    Abstract: The embodiments of the present application provide a pixel circuit, a method for driving the same, and a display apparatus. A driving sub-circuit in the pixel circuit includes a driving transistor and a first storage capacitor. The first storage capacitor has a first terminal electrically coupled to a gate of the driving transistor, and a second terminal coupled to a second electrode of the driving transistor. A writing sub-circuit is coupled to a scanning signal line, a data line, and the gate of the driving transistor, and is configured to write a data voltage into the driving transistor and maintain the driving transistor to be turned on. A reset sub-circuit is configured to supply an initial voltage to the light emitting sub-circuit so as to reset the light emitting sub-circuit. The driving transistor is further coupled to the light emitting sub-circuit to drive the light emitting sub-circuit to emit light.
    Type: Application
    Filed: May 9, 2018
    Publication date: May 30, 2019
    Inventors: Can Yuan, Yongqian LI, Zhidong Yuan, Zhenfei Cai, Meng Li, Xuehuan Feng
  • Publication number: 20190147797
    Abstract: A detection method of a pixel circuit, a driving method of a display panel, a display device and a pixel circuit are provided. The pixel circuit includes a driving transistor, and the detection method includes a writing phase and a reading phase. The writing phase includes: writing a reference data voltage to a gate electrode of the driving transistor, and writing a first detection writing voltage to a first electrode of the driving transistor to turn on the driving transistor; and the reading phase includes: upon the driving transistor being turned off after a first predetermined time after writing the first detection writing voltage, reading a voltage of the first electrode of the driving transistor to obtain a first detection reading voltage for obtaining a threshold voltage of the driving transistor.
    Type: Application
    Filed: July 16, 2018
    Publication date: May 16, 2019
    Applicants: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Can Yuan, Yongqian Li, Zhenfei Cai, Zhidong Yuan, Dongxu Han
  • Publication number: 20190103166
    Abstract: A shift register unit, a driving method thereof, a gate driving circuit and a display device are provided. The shift register unit includes: an input circuit configured to control a voltage applied to a first pull-up node; a timing controller circuit coupled to the first pull-up node and a second pull-up node, and configured to control a voltage applied to the second pull-up node based on the voltage applied to the first pull-up node; a first output circuit configured to control a voltage applied to a first output end; a second output circuit configured to control a voltage applied to a second output end; a pull-down control circuit configured to control a voltage applied to a pull-down node; a first pull-down circuit configured to control the voltage applied to the first pull-up node; and a second pull-down circuit configured to control the voltage applied to the second pull-up node.
    Type: Application
    Filed: May 4, 2018
    Publication date: April 4, 2019
    Applicants: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD .
    Inventors: Zhidong YUAN, Can YUAN, Zhenfei CAI
  • Publication number: 20190096326
    Abstract: The present disclosure relates to a pixel compensation circuit, a driving method for the pixel compensation circuit, a display panel and a display device. The pixel compensation circuit includes a reset circuit, a data writer, a compensation circuit, a driver, and a light emitting device. The threshold voltage of the light emitting device may be provided to the driver through the compensation circuit.
    Type: Application
    Filed: May 29, 2018
    Publication date: March 28, 2019
    Inventors: Zhidong YUAN, Yongqian LI, Can YUAN, Meng LI, Xuehuan FENG, Zhenfei CAI
  • Patent number: 10223951
    Abstract: A scanning direction control circuit includes a selection control circuit configured to output a first control signal to a start signal reception control circuit and output a second control signal to a direction control circuit; the start signal reception control circuit configured to, under the control of the first control signal, enable a scanning pulse signal input end to be electrically coupled to a forward scanning start signal input end during forward scanning, and enable the scanning pulse signal input end to be electrically coupled to a backward scanning start signal input end during backward scanning; and the direction control circuit configured to, under the control of the second control signal, output a forward scanning control signal to a scanning direction control end during forward scanning, and output a backward scanning control signal to the scanning direction control end during backward scanning.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: March 5, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventors: Hao Shang, Zhidong Yuan, Tao Zhang
  • Publication number: 20190066601
    Abstract: A brightness compensation method for a display apparatus, and a display apparatus are disclosed. The brightness compensation method includes: for each row of display units, turning on the row S times during a display time of one frame; inputting, to each display unit in the row a pixel data signal of the frame corresponding to the display unit, when the row is turned on for the i-th time; inputting, to a to-be-compensated display unit in the row, a compensation signal, and controlling other display unit than the to-be-compensated display unit in the row to present black, when the row is turned on for each time other than the i-th time; wherein both S and i are integers, S?2, 1?i?S; for every two adjacent rows of display units, a time interval of same turning-ons of the latter and the former is the same.
    Type: Application
    Filed: May 25, 2018
    Publication date: February 28, 2019
    Inventors: Zhidong YUAN, Can YUAN, Zhenfei CAI, Yongqian LI, Dongxu HAN
  • Publication number: 20190066561
    Abstract: Embodiments of the present disclosure provide an array substrate, a display device. The array substrate comprises first power lines and second power lines disposed on a substrate, wherein the first power line crosses the second power line to define a pixel region, wherein the first power lines crosses the second power lines at intersection points, and the intersection points include a first intersection point where the first power line is electrically connected to the second power line and a second intersection point where the first power line is insulated from the second power line are insulated; the first intersection points for each of the first power supply lines and/or the first intersection points for each of the second power supply lines are distributed at intervals.
    Type: Application
    Filed: April 18, 2018
    Publication date: February 28, 2019
    Inventors: Can Yuan, Zhidong Yuan, Yongqian Li, Zhenfei Cai, Meng Li, Xuehuan Feng
  • Patent number: 10204802
    Abstract: The present disclosure provides a method of forming a via hole, an array substrate and a method of forming the same and a display device. The method of forming a via hole includes: forming a pattern of a first via hole and a pattern of an upper-part etched structure of a second via hole simultaneously on a base substrate through a first patterning process by using a first mask; forming a pattern of the second hole in a region corresponding to the formed pattern of the upper-part etched structure of the second via hole through a second patterning process by using a second mask.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: February 12, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Zhidong Yuan
  • Publication number: 20190027081
    Abstract: Disclosed are a method for color complementation on a white organic light emitting diode (WOLED) display device, and a display device.
    Type: Application
    Filed: May 9, 2018
    Publication date: January 24, 2019
    Inventors: Dongxu Han, Fei Yang, Zhongyuan Wu, Yongqian Li, Tieshi Wang, Zhidong Yuan, Can Yuan, Chi Zhang, Yue Wu
  • Publication number: 20180374405
    Abstract: A method and an apparatus for detecting a driving circuit. The method includes: inputting a data signal, a gate line scanning signal, a voltage signal, and a first control signal with a first voltage level into a data input end, a gate scanning input end, a power source end and a voltage sensing end of the driving circuit, respectively; by inputting a second control signal with a second voltage level into a sensing-scanning input end, controlling a pixel storage capacitor to be charged, and measuring a first voltage of an OLED anode end; by inputting the second control signal with a third voltage level to the sensing-scanning input end, controlling the pixel storage capacitor to be discharged, and measuring a second voltage of the OLED anode end; and determining whether the driving circuit has abnormity or not according to the first voltage and the second voltage.
    Type: Application
    Filed: June 30, 2017
    Publication date: December 27, 2018
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Yongqian Li, Pan Xu, Zhidong Yuan
  • Publication number: 20180342864
    Abstract: The present disclosure relates to an electrostatic protection circuit, an array substrate and a display device, comprising: a first electrostatic discharge circuit and a second electrostatic discharge circuit; wherein the first electrostatic discharge circuit is configured to, in case that an electrostatic voltage formed on the first signal wire is greater than or equal to a first preset turn-on voltage, transmit the electrostatic voltage on the first signal wire to the second signal wire. In case that the electrostatic voltage formed on the first signal wire is greater than or equal to a second preset turn-on voltage, the first electrostatic discharge circuit couples the voltage on the first signal wire to a first node, so that the second electrostatic discharge circuit transmits the electrostatic voltage on the first signal wire to the second signal wire.
    Type: Application
    Filed: January 9, 2018
    Publication date: November 29, 2018
    Inventors: Zhidong YUAN, Can YUAN, Yongqian LI, Xuehuan FENG
  • Publication number: 20180330667
    Abstract: A gate driving unit, a gate driving circuit, a display driving circuit and a display device. The gate driving unit comprises: an input circuit; a first control circuit, configured to provide a first power voltage signal to a first control node in a case that a pull-up node is at an active voltage level; a second control circuit, configured to provide a third clock signal of a third clock terminal to a second control node in a case that the pull-up node is at the active voltage level, and pull down the second control node to a second power voltage signal of a second power voltage terminal in a case that the pull-up node is at a non-active voltage level; and an output circuit, configured to output the first power voltage signal of a first power voltage terminal to the output terminal.
    Type: Application
    Filed: December 6, 2017
    Publication date: November 15, 2018
    Inventors: Zhidong Yuan, Yongqian Li, Min He, Can Yuan, Pan Xu
  • Publication number: 20180308404
    Abstract: A scanning direction control circuit includes a selection control circuit configured to output a first control signal to a start signal reception control circuit and output a second control signal to a direction control circuit; the start signal reception control circuit configured to, under the control of the first control signal, enable a scanning pulse signal input end to be electrically coupled to a forward scanning start signal input end during forward scanning, and enable the scanning pulse signal input end to be electrically coupled to a backward scanning start signal input end during backward scanning; and the direction control circuit configured to, under the control of the second control signal, output a forward scanning control signal to a scanning direction control end during forward scanning, and output a backward scanning control signal to the scanning direction control end during backward scanning.
    Type: Application
    Filed: November 29, 2017
    Publication date: October 25, 2018
    Applicants: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Hao SHANG, Zhidong YUAN, Tao ZHANG
  • Publication number: 20180301100
    Abstract: A display device, a gate driving circuit and a gate driving unit are provided. The gate driving unit includes: a signal maintenance circuit configured to, in the case that a first clock signal at a high level is received, output a high level in accordance with an inputted trigger signal at a high level; a first-level output circuit configured to, in the case that a second clock signal at a high level is received, output a first-level driving signal at a high level in accordance with the high level from an output end of the signal maintenance circuit; and a second-level output circuit configured to, in the case that a third clock signal at a high level is received, output a second-level driving signal at a high level in accordance with the high level from an output end of the first-level output circuit.
    Type: Application
    Filed: November 22, 2017
    Publication date: October 18, 2018
    Inventors: Meng Li, Yongqian Li, Pan Xu, Zhenfei Cai, Zhidong Yuan, Can Yuan, Xuehuan Feng, Wenchao Bao
  • Publication number: 20180233379
    Abstract: The present disclosure provides a method of forming a via hole, an array substrate and a method of forming the same and a display device. The method of forming a via hole includes: forming a pattern of a first via hole and a pattern of an upper-part etched structure of a second via hole simultaneously on a base substrate through a first patterning process by using a first mask; forming a pattern of the second hole in a region corresponding to the formed pattern of the upper-part etched structure of the second via hole through a second patterning process by using a second mask.
    Type: Application
    Filed: March 22, 2017
    Publication date: August 16, 2018
    Inventor: Zhidong Yuan