Patents by Inventor Brian Wendell D'Andrade

Brian Wendell D'Andrade 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).

  • Organic light emitting devices having carrier blocking layers comprising metal complexes
    Patent number: 7261954
    Abstract: Light emitting devices having blocking layers comprising one or more metal complexes are provided. The blocking layers may serve to block electrons, holes, and/or excitons. Preferably, the devices further comprise a separate emissive layer in which charge and/or excitons are confined. Metal complexes suitable for blocking layers can be selected by comparison of HOMO and LUMO energy levels of materials comprising adjacent layers in devices of the present invention.
    Type: Grant
    Filed: February 13, 2006
    Date of Patent: August 28, 2007
    Assignees: The Trustees of Princeton University, The University of Southern California
    Inventors: Mark E. Thompson, Xiaofan Ren, Vadim Adamovich, Steven R Cordero, Brian Wendell D'Andrade, Bert Alleyne, Stephen R. Forrest
  • Doping of organic opto-electronic devices to extend reliability
    Patent number: 7179543
    Abstract: The present invention is directed to multi-layer organic devices having improved stability, wherein at least one layer of the device comprises a host material that is morphologically unstable and a dopant material that provides improved morphological properties to the layer. The layer may be incorporated into, for example, OLEDs, organic phototransistors, organic photovoltaic cells, and organic photodetectors.
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: February 20, 2007
    Assignees: The Trustees of Princeton University, Universal Display Corporation
    Inventors: Stephen R. Forrest, Brian Wendell D'Andrade, Anna Chwang
  • Organic light emitting devices having carrier blocking layers comprising metal complexes
    Patent number: 7022421
    Abstract: Light emitting devices having blocking layers comprising one or more metal complexes are provided. The blocking layers may serve to block electrons, holes, and/or excitons. Preferably, the devices further comprise a separate emissive layer in which charge and/or excitons are confined. Metal complexes suitable for blocking layers can be selected by comparison of HOMO and LUMO energy levels of materials comprising adjacent layers in devices of the present invention.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: April 4, 2006
    Assignees: The University of Southern California, The Trustees of Princeton University
    Inventors: Mark E. Thompson, Xiaofan Ren, Vadim Adamovich, Steven Cordero, Brian Wendell D'Andrade, Bert Alleyne, Stephen R. Forrest
  • Organic light emitting devices having carrier blocking layers comprising metal complexes
    Publication number: 20030068528
    Abstract: Light emitting devices having blocking layers comprising one or more metal complexes are provided. The blocking layers may serve to block electrons, holes, and/or excitons. Preferably, the devices further comprise a separate emissive layer in which charge and/or excitons are confined. Metal complexes suitable for blocking layers can be selected by comparison of HOMO and LUMO energy levels of materials comprising adjacent layers in devices of the present invention.
    Type: Application
    Filed: August 23, 2002
    Publication date: April 10, 2003
    Inventors: Mark E. Thompson, Xiaofan Ren, Vadim Adamovich, Steven R. Cordero, Brian Wendell D'Andrade, Bert Alleyne, Stephen R. Forrest