Patents by Inventor Dinesh Rayabarapu

Dinesh Rayabarapu 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 ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20230053347
    Abstract: A compound of: is disclosed. In Formula III, ring B and ring C are each independently a 5 or 6-membered carbocyclic or heterocyclic ring; A-B represents a bonded pair of carbocyclic or heterocyclic rings coordinated to a metal M via a nitrogen atom in ring A and an sp2 hybridized atom in ring B; A-C represents a bonded pair of carbocyclic or heterocyclic rings; M is a metal having an atomic number greater than 40; L? is a monoanionic bidentate ligand; m is the oxidation state of the metal M; and n is at least 1.
    Type: Application
    Filed: September 16, 2022
    Publication date: February 23, 2023
    Applicant: Universal Display Corporation
    Inventors: Chuanjun XIA, Bert ALLEYNE, Raymond C. KWONG, James FIORDELISO, Michael S. WEAVER, Nasrin ANSARI, Alan DEANGELIS, Dinesh RAYABARAPU, Vadim ADAMOVICH
  • Organic electroluminescent materials and devices
    Patent number: 11482685
    Abstract: A compound of: is disclosed. In Formula IV, ring B and ring C are each independently a 5 or 6-membered carbocyclic or heterocyclic ring; A-B represents a bonded pair of carbocyclic or heterocyclic rings coordinated to a metal M via a nitrogen atom in ring A and an sp2 hybridized atom in ring B; A-C represents a bonded pair of carbocyclic or heterocyclic rings; M is a metal having an atomic number greater than 40; L? is a monoanionic bidentate ligand; m is the oxidation state of the metal M; and n is at least 1.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: October 25, 2022
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Chuanjun Xia, Bert Alleyne, Raymond C. Kwong, James Fiordeliso, Michael S. Weaver, Nasrin Ansari, Alan DeAngelis, Dinesh Rayabarapu, Vadim Adamovich
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20210074931
    Abstract: A compound of: is disclosed. In Formula IV, ring B and ring C are each independently a 5 or 6-membered carbocyclic or heterocyclic ring; A-B represents a bonded pair of carbocyclic or heterocyclic rings coordinated to a metal M via a nitrogen atom in ring A and an sp2 hybridized atom in ring B; A-C represents a bonded pair of carbocyclic or heterocyclic rings; M is a metal having an atomic number greater than 40; L? is a monoanionic bidentate ligand; m is the oxidation state of the metal M; and n is at least 1.
    Type: Application
    Filed: November 19, 2020
    Publication date: March 11, 2021
    Applicant: Universal Display Corporation
    Inventors: Chuanjun XIA, Bert ALLEYNE, Raymond C. KWONG, James FIORDELISO, Michael S. WEAVER, Nasrin ANSARI, Alan DEANGELIS, Dinesh RAYABARAPU, Vadim ADAMOVICH
  • Organic electroluminescent materials and devices
    Patent number: 10892426
    Abstract: An OLED containing an emissive dopant that is a heteroleptic complex having the formula Ir(LA-B)2(LC-D) is disclosed.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: January 12, 2021
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Chuanjun Xia, Bert Alleyne, Raymond C. Kwong, James Fiordeliso, Michael S. Weaver, Nasrin Ansari, Alan Deangelis, Dinesh Rayabarapu, Vadim Adamovich
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20200152890
    Abstract: An OLED containing an emissive dopant that is a heteroleptic complex having the formula Ir(LA-B)2(LC-D) is disclosed.
    Type: Application
    Filed: January 14, 2020
    Publication date: May 14, 2020
    Applicant: Universal Display Corporation
    Inventors: Chuanjun XIA, Bert ALLEYNE, Raymond C. KWONG, James FIORDELISO, Michael S. WEAVER, Nasrin ANSARI, Alan DEANGELIS, Dinesh RAYABARAPU, Vadim ADAMOVICH
  • Organic electroluminescent materials and devices
    Patent number: 10593896
    Abstract: Methods of making novel organic compounds containing a twisted aryl group are provided. In particular, the compounds provided contain a 2-phenylpyridine ligand having a twisted aryl group on the pyridine portion of the ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants. Devices comprising the compounds containing twisted aryl may demonstrate improved color, efficiency, stability and manufacturing.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: March 17, 2020
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Chuanjun Xia, Bert Alleyne, Raymond C. Kwong, James Fiordeliso, Michael S. Weaver, Nasrin Ansari, Alan Deangelis, Dinesh Rayabarapu, Vadim Adamovich
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20190148651
    Abstract: Methods of making novel organic compounds containing a twisted aryl group are provided. In particular, the compounds provided contain a 2-phenylpyridine ligand having a twisted aryl group on the pyridine portion of the ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants. Devices comprising the compounds containing twisted aryl may demonstrate improved color, efficiency, stability and manufacturing.
    Type: Application
    Filed: November 27, 2018
    Publication date: May 16, 2019
    Applicant: Universal Display Corporation
    Inventors: CHUANJUN XIA, Bert ALLEYNE, Raymond C. KWONG, James FIORDELISO, Michael S. WEAVER, Nasrin ANSARI, Alan DEANGELIS, Dinesh RAYABARAPU, Vadim ADAMOVICH
  • Organic electroluminescent materials and devices
    Patent number: 10186672
    Abstract: Methods of making novel organic compounds containing a twisted aryl group are provided. In particular, the compounds provided contain a 2-phenylpyridine ligand having a twisted aryl group on the pyridine portion of the ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants. Devices comprising the compounds containing twisted aryl may demonstrate improved color, efficiency, stability and manufacturing.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: January 22, 2019
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Chuanjun Xia, Bert Alleyne, Raymond C. Kwong, James Fiordeliso, Michael S. Weaver, Nasrin Ansari, Alan Deangelis, Dinesh Rayabarapu, Vadim Adamovich
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20170194577
    Abstract: Methods of making novel organic compounds containing a twisted aryl group are provided. In particular, the compounds provided contain a 2-phenylpyridine ligand having a twisted aryl group on the pyridine portion of the ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants. Devices comprising the compounds containing twisted aryl may demonstrate improved color, efficiency, stability and manufacturing.
    Type: Application
    Filed: March 23, 2017
    Publication date: July 6, 2017
    Applicant: Universal Display Corporation
    Inventors: CHUANJUN XIA, Bert Alleyne, Raymond C. Kwong, James Fiordeliso, Michael S. Weaver, Nasrin Ansari, Alan Deangelis, Dinesh Rayabarapu, Vadim Adamovich
  • Organic electroluminescent material and devices
    Patent number: 9630983
    Abstract: Novel organic compounds containing a twisted aryl group are provided. In particular, the compounds provided contain a 2-phenylpyridine ligand having a twisted aryl group on the pyridine portion of the ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants. Devices comprising the compounds containing twisted aryl may demonstrate improved color, efficiency, stability and manufacturing. Additionally, methods are provided for making homoleptic Ir (III) compounds which may contain a twisted aryl.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: April 25, 2017
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Chuanjun Xia, Bert Alleyne, Raymond C. Kwong, James Fiordeliso, Michael S. Weaver, Nasrin Ansari, Alan Deangelis, Dinesh Rayabarapu, Vadim Adamovich
  • Organic electroluminescent materials and devices
    Patent number: 9359549
    Abstract: Compounds comprising a metal complex having novel ligands are provided. In particular, the compound is an iridium complex comprising novel aza DBX ligands. The compounds may be used in organic light emitting devices, particularly as emitting dopants, providing improved efficiency, low operating voltage, and long lifetime.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: June 7, 2016
    Assignee: Universal Display Corporation
    Inventors: Dinesh Rayabarapu, Chuanjun Xia, Raymond C. Kwong, Bin Ma, Walter Yeager, Bert Alleyne
  • PHOSPHORESCENT MATERIALS
    Publication number: 20150307535
    Abstract: Novel organic compounds containing a twisted aryl group are provided. In particular, the compounds provided contain a 2-phenylpyridine ligand having a twisted aryl group on the pyridine portion of the ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants. Devices comprising the compounds containing twisted aryl may demonstrate improved color, efficiency, stability and manufacturing. Additionally, methods are provided for making homoleptic Ir (III) compounds which may contain a twisted aryl.
    Type: Application
    Filed: July 6, 2015
    Publication date: October 29, 2015
    Applicant: UNIVERSAL DISPLAY CORPORATION
    Inventors: Chuanjun XIA, Bert ALLEYNE, Raymond C. KWONG, James FIORDELISO, Michael S. WEAVER, Nasrin ANSARI, Alan DEANGELIS, Dinesh RAYABARAPU, Vadim ADAMOVICH
  • Phosphorescent emitters
    Patent number: 9156870
    Abstract: Compounds including a ligand with a dibenzo-fused 5-membered ring substituent are provided. In particular, the compounds may be iridium complexes including imidazole coordinated to the dibenzo-substituted ligand. The dibenzo-fused 5-membered ring moiety of the ligand may be twisted or minimally twisted out of plane with respect to the rest of the ligand structure. The compound may be used in organic light emitting devices, particularly as emitting dopants in blue devices. Devices comprising the compounds may demonstrate improved stability while maintaining excellent color.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: October 13, 2015
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Chuanjun Xia, Dinesh Rayabarapu, Yonggang Wu, Suman Layek, James Fiordeliso
  • Phosphorescent materials
    Patent number: 9076973
    Abstract: Novel organic compounds containing a twisted aryl group are provided. In particular, the compounds provided contain a 2-phenylpyridine ligand having a twisted aryl group on the pyridine portion of the ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants. Devices comprising the compounds containing twisted aryl may demonstrate improved color, efficiency, stability and manufacturing. Additionally, methods are provided for making homoleptic Ir (III) compounds which may contain a twisted aryl.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: July 7, 2015
    Assignee: Universal Display Corporation
    Inventors: Chuanjun Xia, Bert Alleyne, Raymond C. Kwong, James Fiordeliso, Michael S. Weaver, Nasrin Ansari, Alan DeAngelis, Dinesh Rayabarapu, Vadim Adamovich
  • PHOSPHORESCENT MATERIALS
    Publication number: 20140021449
    Abstract: Novel organic compounds containing a twisted aryl group are provided. In particular, the compounds provided contain a 2-phenylpyridine ligand having a twisted aryl group on the pyridine portion of the ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants. Devices comprising the compounds containing twisted aryl may demonstrate improved color, efficiency, stability and manufacturing. Additionally, methods are provided for making homoleptic Ir (III) compounds which may contain a twisted aryl.
    Type: Application
    Filed: August 16, 2013
    Publication date: January 23, 2014
    Applicant: Universal Display Corporation
    Inventors: Chuanjun Xia, Bert Alleyne, Raymond C. Kwong, James Fiordeliso, Michael S. Weaver, Nasrin Ansari, Alan DeAngelis, Dinesh Rayabarapu, Vadim Adamovich
  • Phosphorescent materials
    Patent number: 8519384
    Abstract: Novel organic compounds containing a twisted aryl group are provided. In particular, the compounds provided contain a 2-phenylpyridine ligand having a twisted aryl group on the pyridine portion of the ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants. Devices comprising the compounds containing twisted aryl may demonstrate improved color, efficiency, stability and manufacturing. Additionally, methods are provided for making homoleptic Ir (III) compounds which may contain a twisted aryl.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: August 27, 2013
    Assignee: Universal Display Corporation
    Inventors: Chuanjun Xia, Bert Alleyne, Raymond C. Kwong, James Fiordeliso, Jason Brooks, Vadim Adamovich, Michael S. Weaver, Nasrin Ansari, Alan Deangelis, Dinesh Rayabarapu
  • Heteroleptic phosphorescent emitters
    Patent number: 8367223
    Abstract: Heteroleptic compounds containing phenylpyridine and phenylbenzimidazole are provided. The compounds may be used in organic light emitting devices, particularly as emissive dopants in the emissive layer of such devices.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: February 5, 2013
    Assignee: Universal Display Corporation
    Inventors: Chuanjun Xia, Raymond Kwong, Dinesh Rayabarapu, Bin Ma
  • METAL COMPLEX COMPRISING NOVEL LIGAND STRUCTURES
    Publication number: 20120061654
    Abstract: Compounds comprising a metal complex having novel ligands are provided. In particular, the compound is an iridium complex comprising novel aza DBX ligands. The compounds may be used in organic light emitting devices, particularly as emitting dopants, providing improved efficiency, low operating voltage, and long lifetime.
    Type: Application
    Filed: April 6, 2010
    Publication date: March 15, 2012
    Applicant: UNIVERSAL DISPLAY CORPORATION
    Inventors: Dinesh Rayabarapu, Chuanjun Xia, Raymond Kwong, Bin Ma, Walter Yeager, Bert Alleyne
  • PHOSPHORESCENT EMITTERS
    Publication number: 20110204333
    Abstract: Compounds including a ligand with a dibenzo-fused 5-membered ring substituent are provided. In particular, the compounds may be iridium complexes including imidazole coordinated to the dibenzo-substituted ligand. The dibenzo-fused 5-membered ring moiety of the ligand may be twisted or minimally twisted out of plane with respect to the rest of the ligand structure. The compound may be used in organic light emitting devices, particularly as emitting dopants in blue devices. Devices comprising the compounds may demonstrate improved stability while maintaining excellent color.
    Type: Application
    Filed: February 25, 2010
    Publication date: August 25, 2011
    Applicant: UNIVERSAL DISPLAY CORPORATION
    Inventors: Chuanjun XIA, Dinesh RAYABARAPU
  • PHOSPHORESCENT EMITTERS
    Publication number: 20100141127
    Abstract: Heteroleptic compounds containing phenylpyridine and phenylbenzimidazole are provided. The compounds may be used in organic light emitting devices, particularly as emissive dopants in the emissive layer of such devices.
    Type: Application
    Filed: November 10, 2009
    Publication date: June 10, 2010
    Applicant: Universal Display Corporation
    Inventors: Chuanjun XIA, Raymond Kwong, Dinesh Rayabarapu, Bin Ma