Patents by Inventor Caijun ZHENG

Caijun ZHENG 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).

  • Bipolar compound as a host material for organic light emitting diodes
    Patent number: 9269908
    Abstract: The present invention provides a bipolar compound represented by formula (I) and the derivatives thereof as a host material having excellent bipolar transporting properties for organic light-emitting diodes (OLEDs). The present invention also relates to a device including at least a layer of the bipolar compound and/or the derivatives thereof as a host material and a method of making the same.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: February 23, 2016
    Assignee: NANO AND ADVANCED MATERIALS INSTITUTE LIMITED
    Inventors: Chun Sing Lee, Xiao Hong Zhang, Shuit Tong Lee, Caijun Zheng, Man Keung Fung
  • BIPOLAR COMPOUND AS A HOST MATERIAL FOR ORGANIC LIGHT EMITTING DIODES
    Publication number: 20130099207
    Abstract: The present invention provides a bipolar compound represented by formula (I) and the derivatives thereof as a host material having excellent bipolar transporting properties for organic light-emitting diodes (OLEDs). The present invention also relates to a device including at least a layer of the bipolar compound and/or the derivatives thereof as a host material and a method of making the same.
    Type: Application
    Filed: April 19, 2012
    Publication date: April 25, 2013
    Applicant: NANO AND ADVANCED MATERIALS INSTITUTE LIMITED
    Inventors: Chun Sing LEE, Xiao Hong ZHANG, Shuit Tong LEE, Caijun ZHENG, Man Keung FUNG