Patents by Inventor Peter Djurovich

Peter Djurovich 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).

  • Patent number: 7601436
    Abstract: An organic light emitting device having an anode, a cathode and an organic layer disposed between the anode and the cathode is provided. The organic layer may comprise a compound having at least one zwitterionic carbon donor ligand.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: October 13, 2009
    Assignees: The University of Southern California, Universal Display Corporation
    Inventors: Peter Djurovich, Jui-Yi Tsai, Chun Lin, Jason Brooks, Bert Alleyne, Mark E. Thompson, Peter B. MacKenzie, Bin Ma
  • Patent number: 7598381
    Abstract: Certain iridium compounds which may comprise an iridium(III)-ligand complex having the general formula: (C^N)2—Ir—(N^N). (C^N) and (N^N) may each represent a ligand coordinated to an iridium atom. The iridium compounds may have a primary phosphorescent photoluminescence peak wavelength in the near-infrared (IR) range. Also, organic devices that use certain iridium compounds. The organic device may comprise an organic layer and the organic layer may comprise any of the iridium compounds disclosed herein. Also, organic devices that use certain metalloporphyrin compounds. The metalloporphyrin compounds may comprise a core porphyrin structure with four pyrrole rings. The metalloporphyrin compounds may have a primary phosphorescent photoluminescence peak wavelength in the near-IR range.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: October 6, 2009
    Assignees: The Trustees of Princeton University, The University of Southern California, The Regents of the University of Michigan
    Inventors: Mark E. Thompson, Carsten Borek, Kenneth Hanson, Peter Djurovich, Yiru Sun, Stephen Forrest, Arnold Tamayo
  • Publication number: 20090243468
    Abstract: Materials comprising emissive arylimino-isoindoline complexes comprising 1,3-bis(2-pyridylimino)isoindoline (BPI) transition metal and lanthanide complexes as described. Organic light emitting devices comprising these complexes are also described.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Inventors: Mark E. Thompson, Kenneth Hanson, Peter Djurovich, Laurent Griffe
  • Publication number: 20090209760
    Abstract: Organic light emitting devices are described wherein the emissive layer comprises a host material containing an emissive molecule, which molecule is adapted to luminesce when a voltage is applied across the heterostructure, and the emissive molecule is selected from the group of phosphorescent organometallic complexes, including cyclometallated platinum, iridium and osmium complexes. The organic light emitting devices optionally contain an exciton blocking layer. Furthermore, improved electroluminescent efficiency in organic light emitting devices is obtained with an emitter layer comprising organometallic complexes of transition metals of formula L2MX, wherein L and X are distinct bidentate ligands. Compounds of this formula can be synthesized more facilely than in previous approaches and synthetic options allow insertion of fluorescent molecules into a phosphorescent complex, ligands to fine tune the color of emission, and ligands to trap carriers.
    Type: Application
    Filed: May 1, 2009
    Publication date: August 20, 2009
    Inventors: Mark E. Thompson, Peter Djurovich, Sergey Lamansky, Drew Murphy, Raymond Kwong, Feras Abdel-Razzaq, Stephen R. Forrest, Mare A. Baldo, Paul E. Burrows
  • Publication number: 20090140640
    Abstract: An organic light emitting device is provided. The device has an anode, a cathode and an organic layer disposed between the anode and the cathode. The organic layer comprises a compound further comprising one or more carbene ligands coordinated to a metal center.
    Type: Application
    Filed: June 2, 2008
    Publication date: June 4, 2009
    Inventors: Mark E. Thompson, Arnold Tamayo, Peter Djurovich, Tissa Sajoto
  • Patent number: 7534505
    Abstract: An organic light emitting device having an anode, a cathode and an organic layer between the anode and the cathode is provided.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: May 19, 2009
    Assignees: The University of Southern California, Universal Display Corporation
    Inventors: Chun Lin, Jui-Yi Tsai, Jason Brooks, Bert Alleyne, Mark E. Thompson, Peter Djurovich, Arnold Tamayo, Tissa Sajoto, Robert Walters
  • Publication number: 20090111989
    Abstract: Emissive phosphorescent organometallic compounds that produce electroluminescence and organic light emitting devices employing such emissive phosphorescent organometallic compounds are provided. More specifically the present invention is directed to novel primarily non-emitting ligands which produce a blue shift in emitted light when associated with a cyclometallated ligand.
    Type: Application
    Filed: December 23, 2008
    Publication date: April 30, 2009
    Inventors: Mark E. THOMPSON, Peter Djurovich, Jian Li
  • Patent number: 7491823
    Abstract: An organic light emitting device is provided. The device has an anode, a cathode and an organic layer disposed between the anode and the cathode. The organic layer comprises a compound further comprising one or more carbene ligands coordinated to a metal center.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: February 17, 2009
    Assignee: The University of Southern California
    Inventors: Mark E. Thompson, Arnold Tamayo, Peter Djurovich, Tissa Sajoto
  • Patent number: 7482451
    Abstract: Emissive phosphorescent organometallic compounds that produce electroluminescence and organic light emitting devices employing such emissive phosphorescent organometallic compounds are provided. More specifically the present invention is directed to novel primarily non-emitting ligands which produce a blue shift in emitted light when associated with a cyclometallated ligand.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: January 27, 2009
    Assignee: The University of Southern California
    Inventors: Mark E. Thompson, Peter Djurovich, Jian Li
  • Publication number: 20080176102
    Abstract: The invention provides emissive materials and organic light emitting devices using the emissive materials in an emissive layer disposed between and electrically connected to an anode and a cathode. The emissive materials include compounds with the following structure: wherein at least one of R8 to R14 is phenyl or substituted phenyl, and/or at least two of R8 to R14 that are adjacent are part of a fluorenyl group. The emissive materials have enhanced electroluminescent efficiency and improved lifetime when incorporated into light emitting devices.
    Type: Application
    Filed: February 11, 2008
    Publication date: July 24, 2008
    Inventors: Mark E. Thompson, Arnold Tamayo, Peter Djurovich
  • Patent number: 7393599
    Abstract: An organic light emitting device is provided. The device has an anode, a cathode and an organic layer disposed between the anode and the cathode. The organic layer comprises a compound further comprising one or more carbene ligands coordinated to a metal center.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: July 1, 2008
    Assignee: The University of Southern California
    Inventors: Mark E. Thompson, Arnold Tamayo, Peter Djurovich, Tissa Sajoto
  • Publication number: 20080061681
    Abstract: Certain iridium compounds which may comprise an iridium(III)-ligand complex having the general formula: (C?N)2—Ir—(N?N). (C?N) and (N?N) may each represent a ligand coordinated to an iridium atom. The iridium compounds may have a primary phosphorescent photoluminescence peak wavelength in the near-infrared (IR) range. Also, organic devices that use certain iridium compounds. The organic device may comprise an organic layer and the organic layer may comprise any of the iridium compounds disclosed herein. Also, organic devices that use certain metalloporphyrin compounds. The metalloporphyrin compounds may comprise a core porphyrin structure with four pyrrole rings. The metalloporphyrin compounds may have a primary phosphorescent photoluminescence peak wavelength in the near-IR range.
    Type: Application
    Filed: September 11, 2006
    Publication date: March 13, 2008
    Applicants: The Trustees of Princeton University, The Regents of the University of Michigan, The University of Southern California
    Inventors: Mark E. Thompson, Carsten Borek, Kenneth Hanson, Peter Djurovich, Yiru Sun, Stephen Forrest
  • Patent number: 7338722
    Abstract: An organic light emitting device is provided, having an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer may include the following compound: wherein M is a metal having an atomic weight greater than 40; (C—N) is a substituted or unsubstituted cyclometallated ligand, and (C—N) is different from at least one other ligand attached to the metal; each R is independently selected from hydrogen, alkyl, alkenyl, alkynyl, alkylaryl, CN, CF3, CO2R, C(O)R, NR2, NO2, OR, halo, aryl, heteroaryl, substituted aryl, substituted heteroaryl, or a heterocyclic group. The emissive layer may also include a compound having a metal bonded to at least two ligands, in which one ligand has a triplet energy corresponding to a wavelength that is at least 80 nm greater than the wavelength corresponding to the triplet energy of other ligands. Each ligand may be organometallic.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: March 4, 2008
    Assignee: The University of Southern California
    Inventors: Mark E. Thompson, Arnold Tamayo, Peter Djurovich
  • Publication number: 20070296332
    Abstract: Organic light emitting devices are described wherein the emissive layer comprises a host material containing an emissive molecule, which molecule is adapted to luminesce when a voltage is applied across the heterostructure, and the emissive molecule is selected from the group of phosphorescent organometallic complexes, including cyclometallated platinum, iridium and osmium complexes. The organic light emitting devices optionally contain an exciton blocking layer. Furthermore, improved electroluminescent efficiency in organic light emitting devices is obtained with an emitter layer comprising organometallic complexes of transition metals of formula L2MX, wherein L and X are distinct bidentate ligands. Compounds of this formula can be synthesized more facilely than in previous approaches and synthetic options allow insertion of fluorescent molecules into a phosphorescent complex, ligands to fine tune the color of emission, and ligands to trap carriers.
    Type: Application
    Filed: July 16, 2007
    Publication date: December 27, 2007
    Inventors: Mark Thompson, Peter Djurovich, Sergey Lamansky, Drew Murphy, Raymond Kwong, Feras Abdel-Razzaq, Stephen Forrest, Marc Baldo, Paul Burrows
  • Patent number: 7288331
    Abstract: Light emitting devices having charge transporting layers comprising one or more metal complexes are provided. More particularly, devices include hole transporting layers comprising at least one organometallic complex are disclosed. The present devices can further comprise an electron blocking layer for improved efficiency.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: October 30, 2007
    Assignees: The University of Southern California, The Trustees of Princeton University
    Inventors: Mark E. Thompson, Xiaofan Ren, Peter Djurovich, Haiping Hong, Stephen R. Forrest, Chihaya Adachi
  • Patent number: 7154114
    Abstract: An organic light emitting device is provided. The device has an anode, a cathode and an organic layer disposed between the anode and the cathode.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: December 26, 2006
    Assignees: Universal Display Corporation, The University of Southern California
    Inventors: Jason Brooks, Xiao-Chang Li, Bert Alleyne, Mark E. Thompson, Peter Djurovich, Arnold Tamayo
  • Publication number: 20060269785
    Abstract: Devices are provided having an anode, a cathode, and an emissive layer disposed between and electrically connected to the anode and the cathode. The emissive layer includes an emissive material having more than one metal center. In one embodiment, first and second metal centers are independently selected from the group consisting of d7, d8, and d9 metals. A bridging ligand is coordinated to the first metal center and to the second metal center. In one embodiment, the first and second metal centers each have coordination numbers of at least 3, and more preferably each have coordination numbers of 4. In one embodiment, photoactive ligands are coordinated to the first and second metal centers. In one embodiment, there are no photoactive ligands. In one embodiment, a charge neutral bi-nuclear emissive material is provided. In one embodiment the first and metal centers have a co-facial configuration, and preferably a square planar co-facial configuration.
    Type: Application
    Filed: May 15, 2006
    Publication date: November 30, 2006
    Inventors: Mark Thompson, Bert Alleyne, Peter Djurovich
  • Publication number: 20060257685
    Abstract: Light emitting devices having charge transporting layers comprising one or more metal complexes are provided. More particularly, devices include hole transporting layers comprising at least one organometallic complex are disclosed. The present devices can further comprise an electron blocking layer for improved efficiency.
    Type: Application
    Filed: April 20, 2006
    Publication date: November 16, 2006
    Inventors: Mark Thompson, Xiaofan Ren, Peter Djurovich, Haiping Hong, Stephen Forrest, Chihaya Adachi
  • Patent number: 7090928
    Abstract: Devices are provided having an anode, a cathode, and an emissive layer disposed between and electrically connected to the anode and the cathode. The emissive layer includes an emissive material having more than one metal center. In one embodiment, first and second metal centers are independently selected from the group consisting of d7, d8 and d9 metals. A bridging ligand is coordinated to the first metal center and to the second metal center. In one embodiment, the first and second metal centers each have coordination numbers of at least 3, and more preferably each have coordination numbers of 4. In one embodiment, photoactive ligands are coordinated to the first and second metal centers. In one embodiment, there are no photoactive ligands. In one embodiment, a charge neutral bi-nuclear emissive material is provided. In one embodiment the first and metal centers have a co-facial configuration, and preferably a square planar co-facial configuration.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: August 15, 2006
    Assignee: The University of Southern California
    Inventors: Mark E. Thompson, Bert Alleyne, Peter Djurovich
  • Patent number: 7078113
    Abstract: Light emitting devices having charge transporting layers comprising one or more metal complexes are provided. More particularly, devices include hole transporting layers comprising at least one metal complex are disclosed. The present devices can further comprise an electron blocking layer for improved efficiency.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: July 18, 2006
    Assignees: The University of Southern California, The Trustees of Princeton University
    Inventors: Mark E. Thompson, Xiaofan Ren, Peter Djurovich, Haiping Hong, Stephen R. Forrest, Chihaya Adachi