Patents by Inventor Chaogan CAO

Chaogan CAO 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: 12232389
    Abstract: Provided are a pixel structure, a display panel and a display device. The pixel structure includes multiple first sub-pixel groups, each of the multiple first sub-pixel groups includes a first sub-pixel and at least one second sub-pixel, the first sub-pixel is disposed around the at least one second sub-pixel and an emission color of the first sub-pixel is different from an emission color of any one of the at least one second sub-pixel.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: February 18, 2025
    Assignee: JITRI INSTITUTE OF ORGANIC OPTOELECTRONICS CO., LTD.
    Inventors: Xuliang Wang, Kai Zhu, Hao Wang, Jian Liang, Xiaozhao Zhu, Chaogan Cao
  • Publication number: 20220238609
    Abstract: Provided are a pixel structure, a display panel and a display device. The pixel structure includes multiple first sub-pixel groups, each of the multiple first sub-pixel groups includes a first sub-pixel and at least one second sub-pixel, the first sub-pixel is disposed around the at least one second sub-pixel and an emission color of the first sub-pixel is different from an emission color of any one of the at least one second sub-pixel.
    Type: Application
    Filed: April 17, 2020
    Publication date: July 28, 2022
    Inventors: Xuliang WANG, Kai ZHU, Hao WANG, Jian LIANG, Xiaozhao ZHU, Chaogan CAO
  • Patent number: 11049450
    Abstract: A pixel circuit and a pixel circuit driving method. The pixel circuit includes four transistors, two scan signal lines, a data signal line, a control signal line, a capacitor, and a LED. The first transistor has a source electrode connected to a first plate of the capacitor, and a drain electrode connected to a source electrode of the second transistor. A second plate of the capacitor is connected to a drain electrode of the third transistor. The second transistor has a drain electrode connected to a gate electrode of the fourth transistor, and the source electrode connected to the data signal line. The third transistor has a source electrode connected to the power source, and the drain electrode connected to a source electrode of the fourth transistor. A drain electrode of the fourth transistor is connected to the LED. A cathode of the LED is connected to ground.
    Type: Grant
    Filed: April 28, 2018
    Date of Patent: June 29, 2021
    Assignee: JITRI INSTITUTE OF ORGANIC OPTOELECTRONICS CO., LTD.
    Inventors: Yuanyuan Han, Chaogan Cao, Xiaozhao Zhu, Long Wang, Man-keung Fung, Liangsheng Liao
  • Publication number: 20200111414
    Abstract: A pixel circuit and a pixel circuit driving method. The pixel circuit includes four transistors, two scan signal lines, a data signal line, a control signal line, a capacitor, and a LED. The first transistor has a source electrode connected to a first plate of the capacitor, and a drain electrode connected to a source electrode of the second transistor. A second plate of the capacitor is connected to a drain electrode of the third transistor. The second transistor has a drain electrode connected to a gate electrode of the fourth transistor, and the source electrode connected to the data signal line. The third transistor has a source electrode connected to the power source, and the drain electrode connected to a source electrode of the fourth transistor. A drain electrode of the fourth transistor is connected to the LED. A cathode of the LED is connected to ground.
    Type: Application
    Filed: April 28, 2018
    Publication date: April 9, 2020
    Applicant: JITRI INSTITUTE OF ORGANIC OPTOELECTRONICS CO., LTD.
    Inventors: Yuanyuan HAN, Chaogan CAO, Xiaozhao ZHU, Long WANG, Man-keung FUNG, Liangsheng LIAO