Patents by Inventor Liang S. Hung

Liang S. Hung 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).

  • Electron-injecting layer providing a modified interface between an organic light-emitting structure and a cathode buffer layer
    Patent number: 6172459
    Abstract: An organic light-emitting device including a substrate; an anode disposed over the substrate; an organic light-emitting structure disposed over the anode; a cathode buffer layer disposed over the organic light-emitting structure and of a material selected to permit high energy deposition of a cathode; a cathode disposed over the cathode buffer layer; and an interfacial layer provided with an electron-injecting material between the organic light-emitting structure and the cathode buffer layer.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: January 9, 2001
    Assignee: Eastman Kodak Company
    Inventors: Liang S. Hung, Ching W. Tang, Pranab K. Raychaudhuri
  • Interfacial electron-injecting layer formed from a doped cathode for organic light-emitting structure
    Patent number: 6140763
    Abstract: An organic light-emitting device including a substrate, an anode disposed over the substrate, an organic light-emitting structure disposed over the anode, a cathode buffer layer disposed over the organic light-emitting structure and formed of a material selected to permit high energy deposition of a cathode, and a cathode disposed over the cathode buffer layer and being provided with an electron-injecting dopant which diffuses across the buffer layer to provide an interfacial electron-injecting layer at the interface between the organic light-emitting structure and the cathode buffer layer.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: October 31, 2000
    Assignee: Eastman Kodak Company
    Inventors: Liang S. Hung, Joseph K. Madathil, Ching W. Tang
  • Electron-injecting layer formed from a dopant layer for organic light-emitting structure
    Patent number: 6137223
    Abstract: An organic light-emitting device including a substrate; an anode disposed over the substrate; an organic light-emitting structure disposed over the anode; a cathode buffer layer disposed over the organic light-emitting structure and formed of a material selected to permit high energy deposition of a cathode; a cathode disposed over the cathode buffer layer; and a dopant layer disposed between the cathode buffer layer and the cathode and being provided with an electron-injecting dopant which diffuses across the buffer layer to provide an interfacial electron-injecting layer at the interface between the light-emitting structure and the cathode buffer layer.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: October 24, 2000
    Assignee: Eastman Kodak Company
    Inventors: Liang S. Hung, Joseph K. Madathil