Patents by Inventor Young Yik Ko

Young Yik Ko 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: 20210174746
    Abstract: A pixel circuit, a display panel, a display device, and a driving method. The pixel circuit includes a light emitting element, a driving transistor, a light emitting control circuit, a reset circuit, a threshold compensation circuit, a first data write circuit, and an initializing circuit. The reset circuit includes a first transistor, the first data write circuit includes a third transistor, and a channel length-width ratio of the first transistor is greater than a channel length-width ratio of the third transistor.
    Type: Application
    Filed: February 18, 2021
    Publication date: June 10, 2021
    Inventors: Yi ZHANG, Kai Zhang, Minghua Xuan, Young Yik Ko, Lujiang Huangfu
  • Publication number: 20210166614
    Abstract: There is provided a pixel driving circuit and a driving method thereof, and a display apparatus. The pixel driving circuit includes a driving transistor, a storage capacitor, and a light emitting element, a first control sub-circuit and a second control sub-circuit; first and second control terminals of the first control sub-circuit are connected to first and second pulse signal terminals, a first input terminal thereof is connected to a power supply signal terminal and a source of a driving transistor, a second input terminal thereof is connected to an initial signal terminal, third and fourth input terminals thereof are connected to a data line and a drain of the driving transistor, a first output terminal thereof is connected to a first electrode plate of a storage capacitor, and a second output terminal thereof is connected to a second plate and a gate of the driving transistor.
    Type: Application
    Filed: November 8, 2017
    Publication date: June 3, 2021
    Inventors: Yuan YAO, Young Yik KO, Yue LONG, Wanli DONG
  • Publication number: 20210151707
    Abstract: A display substrate and a preparation method thereof, and a display device are provided. The display substrate includes a display region and an opening region, the display region surrounds the opening region, a first barrier wall is between the display region and the opening region, and the first barrier wall surrounds the opening region; the first barrier wall includes a first metal layer structure, and at least one side surface, surrounding the opening region, of the first metal layer structure includes a recess.
    Type: Application
    Filed: March 26, 2019
    Publication date: May 20, 2021
    Inventors: Weiyun HUANG, Young Yik KO, Sanghun KANG, Wenbo HU
  • Patent number: 11011551
    Abstract: An array substrate and display apparatus, the array substrate comprising a base substrate (10) and signal lines (VDD, VSS) provided on the base substrate (10), wherein at least one electrically conductive element (12) corresponding to the signal lines (VDD, VSS) is further provided on the base substrate (10), the signal lines (VDD, VSS) are connected in parallel with corresponding electrically conductive elements (12), and the electrically conductive elements (12) corresponding to different signal lines (VDD, VSS) are insulated from one another. Thus, resistance of the signal lines (VDD, VSS) can be reduced and the display effect can be improved.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: May 18, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Xiangdan Dong, Young Yik Ko, Jinsan Park
  • Patent number: 10997952
    Abstract: A display panel and a driving method thereof, and a display device are disclosed. The display panel includes: a pixel region, including a first pixel region and a second pixel region located around the first pixel region, the first pixel region and the second pixel region each including a plurality of pixels; a photosensitive layer, located at least in the second pixel region; a cover plate, on a side of the pixel region for displaying, and the cover plate including a light transmission region and a light shielding layer surrounding the light transmission region. The light shielding layer coincides with at least a portion of the second pixel region in a direction perpendicular to the cover plate, and the photosensitive layer is configured to determine a position of the light transmission region.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: May 4, 2021
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Young Yik Ko, Tingliang Liu, Xiangdan Dong, Jinsan Park
  • Patent number: 10950179
    Abstract: A pixel circuit, a display panel, a display device, and a driving method. The pixel circuit includes a light emitting element, a driving transistor, a light emitting control circuit, a reset circuit, a threshold compensation circuit, a first data write circuit, and an initializing circuit. The reset circuit includes a first transistor, the first data write circuit includes a third transistor, and a channel length-width ratio of the first transistor is greater than a channel length-width ratio of the third transistor.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: March 16, 2021
    Assignees: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yi Zhang, Kai Zhang, Minghua Xuan, Young Yik Ko, Lujiang Huangfu
  • Patent number: 10872938
    Abstract: The disclosure discloses an electroluminescent display panel, a method for fabricating the same, and a display device. Where the electroluminescent display panel includes: a base substrate; a pixel definition layer located on the base substrate and including a plurality of opening regions for defining sub-pixel light-emitting areas; and light-emitting function layers, which cover the plurality of opening regions in a one-to-one correspondence manner, of sub-pixels; where the plurality of opening regions include normally-shaped opening regions and abnormally-shaped opening regions at an edge of an abnormally-shaped display area; and an area of each of the abnormally-shaped opening regions is smaller than an area of a normally-shaped opening region for defining a sub-pixel having a same light-emitting color.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: December 22, 2020
    Assignees: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Co., Ltd.
    Inventors: Tianyi Cheng, Young Yik Ko, Weiyun Huang, Yue Long, Zhenxiao Tong, Jingzhe Fang, Yujing Piao, Shunnv Qian
  • Publication number: 20200286432
    Abstract: A pixel circuit, a display panel, a display device, and a driving method. The pixel circuit includes a light emitting element, a driving transistor, a light emitting control circuit, a reset circuit, a threshold compensation circuit, a first data write circuit, and an initializing circuit. The reset circuit includes a first transistor, the first data write circuit includes a third transistor, and a channel length-width ratio of the first transistor is greater than a channel length-width ratio of the third transistor.
    Type: Application
    Filed: May 26, 2020
    Publication date: September 10, 2020
    Inventors: Yi ZHANG, Kai ZHANG, Minghua XUAN, Young Yik KO, Lujiang HUANGFU
  • Publication number: 20200266215
    Abstract: An array substrate and display apparatus, the array substrate comprising a base substrate (10) and signal lines (VDD, VSS) provided on the base substrate (10), wherein at least one electrically conductive element (12) corresponding to the signal lines (VDD, VSS) is further provided on the base substrate (10), the signal lines (VDD, VSS) are connected in parallel with corresponding electrically conductive elements (12), and the electrically conductive elements (12) corresponding to different signal lines (VDD, VSS) are insulated from one another. Thus, resistance of the signal lines (VDD, VSS) can be reduced and the display effect can be improved.
    Type: Application
    Filed: August 9, 2017
    Publication date: August 20, 2020
    Inventors: Xiangdan DONG, Young Yik KO, Jinsan PARK
  • Patent number: 10692434
    Abstract: A pixel circuit, a display panel, a display device and a driving method. The pixel circuit includes a storage capacitor, an organic light emitting diode, a driving transistor, an emission control circuit, a reset circuit, a threshold compensation circuit, a first data write circuit, a reference voltage write circuit, and an initializing circuit.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: June 23, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventors: Yi Zhang, Kai Zhang, Minghua Xuan, Young Yik Ko, Lujiang Huangfu
  • Patent number: 10672332
    Abstract: A pixel compensation circuit and a driving method thereof, and a display device. The pixel compensation circuit includes: a driving sub-circuit; a light-emitting device; an initialization sub-circuit, configured to initialize a control electrode of the driving sub-circuit; a data writing sub-circuit, configured to provide a data signal to the control electrode of the driving sub-circuit; a voltage input sub-circuit, configured to provide a signal of the first power supply terminal to the first electrode of the driving sub-circuit; a storage and voltage division sub-circuit, configured to store a voltage of the first electrode of the driving sub-circuit, and when the control electrode of the driving sub-circuit is floating, maintain stability of a voltage difference between the control electrode and the first electrode of the driving sub-circuit; and a threshold compensation sub-circuit, configured to write a threshold voltage of the driving sub-circuit into the first electrode of the driving sub-circuit.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: June 2, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Sangwon Lee, Min Ho Ko, Sang Hun Kang, Young Yik Ko, Wanli Dong
  • Publication number: 20200126478
    Abstract: A pixel circuit and a driving method thereof and a display device are disclosed. The pixel circuit includes a switch circuit, a driver circuit, a compensation circuit, a reset circuit and a light emitting element. The driver circuit includes a control terminal, a first terminal and a second terminal and is configured to control a driving current, which runs through the first terminal and the second terminal; the switch circuit is configured to write a data signal to the control terminal in response to a scan signal: the compensation circuit is configured to store the data signal that is written in and electrically connect the control terminal and the second terminal in response to the scan signal; the reset circuit is configured to apply a reset voltage to the compensation circuit in response to a reset signal and electrically connect the control terminal and the first terminal.
    Type: Application
    Filed: September 6, 2018
    Publication date: April 23, 2020
    Inventors: Sangwon LEE, Minho KO, Sanghun KANG, Wen TAN, Young Yik KO, Wanli DONG
  • Patent number: 10622431
    Abstract: The disclosure discloses a display panel, a display device, and a method for manufacturing the display panel, where a chip on film is adhered on a frame edge of a side of a display substrate away from a display face of the display substrate through an insulation adhesive, and then signal lines on a frame edge of the display face of the display substrate are connected with connection terminals arranged on a side of the chip on film away from the display substrate through an electrically conductive material in a plurality of connection holes running through the display substrate, the insulation adhesive and the chip on film, so a pad bending process can be dispensed with, and there will be no pad bending area on the frame edge of the display panel, thus further narrowing a bezel of the display panel.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: April 14, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Young Yik Ko, Xiangdan Dong, Jinsan Park, Wenbao Gao, Guobo Yang, Haijun Qiu, Wanli Dong, Benlian Wang
  • Publication number: 20200098341
    Abstract: A display panel and a driving method thereof, and a display device are disclosed. The display panel includes: a pixel region, including a first pixel region and a second pixel region located around the first pixel region, the first pixel region and the second pixel region each including a plurality of pixels; a photosensitive layer, located at least in the second pixel region; a cover plate, on a side of the pixel region for displaying, and the cover plate including a light transmission region and a light shielding layer surrounding the light transmission region. The light shielding layer coincides with at least a portion of the second pixel region in a direction perpendicular to the cover plate, and the photosensitive layer is configured to determine a position of the light transmission region.
    Type: Application
    Filed: November 12, 2018
    Publication date: March 26, 2020
    Inventors: Young Yik KO, Tingliang LIU, Xiangdan DONG, Jinsan PARK
  • Publication number: 20200013840
    Abstract: The disclosure discloses a display panel, a display device, and a method for manufacturing the display panel, where a chip on film is adhered on a frame edge of a side of a display substrate away from a display face of the display substrate through an insulation adhesive, and then signal lines on a frame edge of the display face of the display substrate are connected with connection terminals arranged on a side of the chip on film away from the display substrate through an electrically conductive material in a plurality of connection holes running through the display substrate, the insulation adhesive and the chip on film, so a pad bending process can be dispensed with, and there will be no pad bending area on the frame edge of the display panel, thus further narrowing a bezel of the display panel.
    Type: Application
    Filed: September 14, 2017
    Publication date: January 9, 2020
    Inventors: Young Yik Ko, Xiangdan Dong, Jinsan Park, Wenbao Gao, Guobo Yang, Haijun Qiu, Wanli Dong, Benlian Wang
  • Patent number: 10453389
    Abstract: The present disclosure discloses a pixel circuit, an organic electroluminescent display panel and a display apparatus. By adding one switch module in the pixel circuit, the abnormal drive current output by the driving module may be prevented from flowing to the light emitting device during a first frame of display picture as startup, and thus the problem of screen flicker can be overcome in the screen of the first frame when the display panel is started up.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: October 22, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Lei Dai, Young Yik Ko
  • Publication number: 20190305057
    Abstract: The disclosure discloses an electroluminescent display panel, a method for fabricating the same, and a display device. Where the electroluminescent display panel includes: a base substrate; a pixel definition layer located on the base substrate and including a plurality of opening regions for defining sub-pixel light-emitting areas; and light-emitting function layers, which cover the plurality of opening regions in a one-to-one correspondence manner, of sub-pixels; where the plurality of opening regions include normally-shaped opening regions and abnormally-shaped opening regions at an edge of an abnormally-shaped display area; and an area of each of the abnormally-shaped opening regions is smaller than an area of a normally-shaped opening region for defining a sub-pixel having a same light-emitting color.
    Type: Application
    Filed: August 29, 2018
    Publication date: October 3, 2019
    Inventors: Tianyi Cheng, Young Yik Ko, Weiyun Huang, Yue Long, Zhenxiao Tong, Jingzhe Fang, Yujing Piao, Shunnv Qian
  • Patent number: 10424248
    Abstract: A display panel and display device, the display panel includes: a first power terminal disposed on a first side of the display panel; a second power terminal disposed on a second side of the display panel; and a power line configured to transmit mains voltage, wherein the first side and the second side are arranged opposite to each other; and the first power terminal and the second power terminal is in one-to-one correspondence and configured to provide equal mains voltage for the power line. The display panel and display device can compensate the IR drop on a power line in the display panel and hence reduce or eliminate the problem of uneven display brightness of the display panel due to IR drop.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: September 24, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Young Yik Ko, Wanli Dong
  • Publication number: 20190114960
    Abstract: A pixel compensation circuit and a driving method thereof, and a display device. The pixel compensation circuit includes: a driving sub-circuit; a light-emitting device; an initialization sub-circuit, configured to initialize a control electrode of the driving sub-circuit; a data writing sub-circuit, configured to provide a data signal to the control electrode of the driving sub-circuit; a voltage input sub-circuit, configured to provide a signal of the first power supply terminal to the first electrode of the driving sub-circuit; a storage and voltage division sub-circuit, configured to store a voltage of the first electrode of the driving sub-circuit, and when the control electrode of the driving sub-circuit is floating, maintain stability of a voltage difference between the control electrode and the first electrode of the driving sub-circuit; and a threshold compensation sub-circuit, configured to write a threshold voltage of the driving sub-circuit into the first electrode of the driving sub-circuit.
    Type: Application
    Filed: May 16, 2018
    Publication date: April 18, 2019
    Inventors: Sangwon LEE, Min Ho KO, Sang Hun KANG, Young Yik KO, Wanli DONG
  • Publication number: 20180330664
    Abstract: A display panel and display device, the display panel includes: a first power terminal disposed on a first side of the display panel; a second power terminal disposed on a second side of the display panel; and a power line configured to transmit mains voltage, wherein the first side and the second side are arranged opposite to each other; and the first power terminal and the second power terminal is in one-to-one correspondence and configured to provide equal mains voltage for the power line. The display panel and display device can compensate the IR drop on a power line in the display panel and hence reduce or eliminate the problem of uneven display brightness of the display panel due to IR drop.
    Type: Application
    Filed: May 5, 2017
    Publication date: November 15, 2018
    Applicants: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Young Yik KO, Wanli DONG