Patents Examined by D. L. Garrett
  • White and colored organic electroluminescent devices using single emitting material by novel color change technique
    Patent number: 6521360
    Abstract: An organic electroluminescent device such as a light-emitting diode is disclosed, in which the emission layer comprises a single emitting material at different aggregate state to obtain constant chromaticity white emission. Correspondingly, a novel configuration has been developed to get white emission and color change in the organic EL devices.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: February 18, 2003
    Assignee: City University of Hong Kong
    Inventors: Shuit-Tong Lee, Chun-Sing Lee, Zhi-Qiang Gao