Patents by Inventor Chaohuan WANG

Chaohuan WANG 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).

  • Patent number: 12033549
    Abstract: An organic light-emitting diode (OLED) display panel and an OLED display device have a display region and a non-display region surrounding the display region. The non-display region includes a bonding region, a first fan-out line region, a bending region, and a second fan-out line region. A bonding test region is arranged between the bonding region and the first fan-out line region, a bonding test circuit is arranged in the bonding test region, and the bonding test circuit is used to detect whether a fan-out data line passing through the bonding region is abnormal.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: July 9, 2024
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Chaohuan Wang
  • Publication number: 20230215305
    Abstract: An organic light-emitting diode (OLED) display panel and an OLED display device have a display region and a non-display region surrounding the display region. The non-display region includes a bonding region, a first fan-out line region, a bending region, and a second fan-out line region. A bonding test region is arranged between the bonding region and the first fan-out line region, a bonding test circuit is arranged in the bonding test region, and the bonding test circuit is used to detect whether a fan-out data line passing through the bonding region is abnormal.
    Type: Application
    Filed: September 25, 2020
    Publication date: July 6, 2023
    Applicant: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Chaohuan Wang
  • Patent number: 11688313
    Abstract: The present disclosure provides a display device and a method of detecting a driving circuit. The display device of the present disclosure is provided with test switches on both first connection wires and second connection wires, so that wiring on both sides of the driving circuit can be tested, thereby preventing the driving circuit of the display device from missed detections and improving durability of the display device.
    Type: Grant
    Filed: June 28, 2020
    Date of Patent: June 27, 2023
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Chaohuan Wang
  • Publication number: 20230123476
    Abstract: The present disclosure provides a display device and a method of detecting a driving circuit. The display device of the present disclosure is provided with test switches on both first connection wires and second connection wires, so that wiring on both sides of the driving circuit can be tested, thereby preventing the driving circuit of the display device from missed detections and improving durability of the display device.
    Type: Application
    Filed: June 28, 2020
    Publication date: April 20, 2023
    Inventor: Chaohuan WANG
  • Patent number: 11374085
    Abstract: An organic light-emitting diode display panel, a method of manufacturing the same, and a display device are provided. The organic light-emitting diode display panel includes a flexible substrate defined with a test circuit region thereon. The test circuit region is provided with a test circuit and defined with a circuit trace region. The circuit trace region includes a plurality of traces, a plurality of transistors, a control line, and at least one pin. Each one of the traces is connected to one of the transistors. The control line is electrically connected to a control end of each of the transistors to turn on or turn off the transistors to avoid the circuit from short-circuiting.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: June 28, 2022
    Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Chaohuan Wang
  • Publication number: 20220130936
    Abstract: An organic light-emitting diode display panel, a method of manufacturing the same, and a display device are provided. The organic light-emitting diode display panel includes a flexible substrate defined with a test circuit region thereon. The test circuit region is provided with a test circuit and defined with a circuit trace region. The circuit trace region includes a plurality of traces, a plurality of transistors, a control line, and at least one pin. Each one of the traces is connected to one of the transistors. The control line is electrically connected to a control end of each of the transistors to turn on or turn off the transistors to avoid the circuit from short-circuiting.
    Type: Application
    Filed: March 31, 2020
    Publication date: April 28, 2022
    Applicant: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Chaohuan WANG
  • Patent number: 11222561
    Abstract: A display panel test circuit that includes a plurality of metal-oxide-semiconductor field-effect transistors (MOSFETs); a first signal line electrically connected to gates of the MOSFETs; a second signal line electrically connected to sources of a part of the MOSFETs; and a third signal line electrically connected to sources of other part of the MOSFETs; wherein sources of any two adjacent MOSFETs of the plurality of MOSFETs are electrically connected to the second signal line and the third signal line, respectively. The display panel test circuit can detect a short circuit problem of a green data signal during a phase of lighting test, and thereby monitor and increase yields of AMOLED display panels.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: January 11, 2022
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Chaohuan Wang
  • Publication number: 20210020082
    Abstract: A display panel test circuit that includes a plurality of metal-oxide-semiconductor field-effect transistors (MOSFETs); a first signal line electrically connected to gates of the MOSFETs; a second signal line electrically connected to sources of a part of the MOSFETs; and a third signal line electrically connected to sources of other part of the MOSFETs; wherein sources of any two adjacent MOSFETs of the plurality of MOSFETs are electrically connected to the second signal line and the third signal line, respectively. The display panel test circuit can detect a short circuit problem of a green data signal during a phase of lighting test, and thereby monitor and increase yields of AMOLED display panels.
    Type: Application
    Filed: September 6, 2019
    Publication date: January 21, 2021
    Applicant: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Chaohuan WANG