Patents by Inventor Cheng-Hao Cheng

Cheng-Hao Cheng 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).

  • Paracyclophane-based iridium complexes for organic electroluminescence device
    Patent number: 10686146
    Abstract: Provided a paracyclophane-based iridium complexes and the phosphorescent organic EL device employing the paracyclophane-based iridium complexes as light emitting dopant of emitting layer can display good performance like as lower driving voltage, power consumption, increasing efficiency and life time. Additional, the present invention provide the suitable emitting host (H1 to H8) to collocate with the energy level of paracyclophane-based iridium complexes for the present invention.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: June 16, 2020
    Inventors: Feng-Wen Yen, Cheng-Hao Cheng
  • PARACYCLOPHANE-BASED IRIDIUM COMPLEXES FOR ORGANIC ELECTROLUMINESCENCE DEVICE
    Publication number: 20180233677
    Abstract: Provided a paracyclophane-based iridium complexes and the phosphorescent organic EL device employing the paracyclophane-based iridium complexes as light emitting dopant of emitting layer can display good performance like as lower driving voltage, power consumption, increasing efficiency and life time. Additional, the present invention provide the suitable emitting host (H1 to H8) to collocate with the energy level of paracyclophane-based iridium complexes for the present invention.
    Type: Application
    Filed: February 13, 2017
    Publication date: August 16, 2018
    Applicant: LUMINESCENCE TECHNOLOGY CORPORATION
    Inventors: FENG-WEN YEN, Cheng-Hao Cheng