Patents by Inventor Liang-Sheng L. Liao

Liang-Sheng L. Liao 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).

  • Providing an organic electroluminescent device having stacked electroluminescent units
    Patent number: 6872472
    Abstract: A stacked organic electroluminescent device and a method of making such device is disclosed. The device comprises an anode, a cathode, at least two organic electroluminescent units disposed between the anode and the cathode, and a doped organic connector disposed between each adjacent organic electroluminescent unit wherein the organic electroluminescent unit comprises at least one organic hole-transporting layer and one organic electron-transporting layer. The doped organic connector comprises at least one n-type doped organic layer or one p-type doped organic layer, or combinations of layers thereof.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: March 29, 2005
    Assignee: Eastman Kodak Company
    Inventors: Liang-Sheng L. Liao, Ching W. Tang
  • Organic electroluminescent device having an adhesion-promoting layer for use with a magnesium cathode
    Patent number: 6794061
    Abstract: An organic electroluminescent device is provided that includes an anode and a substantially pure Mg cathode, an electroluminescent medium disposed between the anode and the cathode, and an adhesion-promoting layer in contact with cathode and the electroluminescent medium. The adhesion-promoting layer comprises at least one metal or metal compound selected from group 1 through group 15 of the Periodic Table of Elements such that the metal has an atomic number of at least 19.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: September 21, 2004
    Assignee: Eastman Kodak Company
    Inventors: Liang-Sheng L. Liao, Joseph K. Madathil, Pranab K. Raychaudhuri, Ching W. Tang
  • Providing an organic electroluminescent device having stacked electroluminescent units
    Publication number: 20030170491
    Abstract: A stacked organic electroluminescent device and a method of making such device is disclosed. The device comprises an anode, a cathode, at least two organic electroluminescent units disposed between the anode and the cathode, and a doped organic connector disposed between each adjacent organic electroluminescent unit wherein the organic electroluminescent unit comprises at least one organic hole-transporting layer and one organic electron-transporting layer. The doped organic connector comprises at least one n-type doped organic layer or one p-type doped organic layer, or combinations of layers thereof.
    Type: Application
    Filed: February 15, 2002
    Publication date: September 11, 2003
    Applicant: Eastman Kodak Company
    Inventors: Liang-Sheng L. Liao, Ching W. Tang
  • Organic electroluminescent device having an adhesion-promoting layer for use with a magnesium cathode
    Publication number: 20030152801
    Abstract: An organic electroluminescent device is provided that includes an anode and a substantially pure Mg cathode, an electroluminescent medium disposed between the anode and the cathode, and an adhesion-promoting layer in contact with cathode and the electroluminescent medium. The adhesion-promoting layer comprises at least one metal or metal compound selected from group 1 through group 15 of the Periodic Table of Elements such that the metal has an atomic number of at least 19.
    Type: Application
    Filed: January 31, 2002
    Publication date: August 14, 2003
    Applicant: Eastman Kodak Company
    Inventors: Liang-Sheng L. Liao, Joseph K. Madathil, Pranab K. Raychaudhuri, Ching W. Tang