Patents by Inventor Lichang Zeng

Lichang Zeng 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: 20210036242
    Abstract: New organometallic complexes having bis- or tris-heteroleptic ligands and large aspect ratio in one direction and their use in OLEDs to enhance the efficiency is disclosed.
    Type: Application
    Filed: October 21, 2020
    Publication date: February 4, 2021
    Applicant: Universal Display Corporation
    Inventors: Zhiqiang JI, Lichang ZENG, Jui-Yi TSAI, Chun LIN, Chuanjun XIA, Alexey Borisovich DYATKIN, Walter YEAGER
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20210024558
    Abstract: A compound including a first ligand LA having the structure of Formula I, is disclosed. In Formula I, rings A and B are each a 6-membered rings; Z1 and Z2 are each carbon or nitrogen; each RA and RB is independently hydrogen or a variety of substituents; any two substituents are optionally joined or fused into a ring; at least one RA or RB comprises an aromatic group substituted by a bridge structure, and this RA or RB joins with an adjacent substituent and fuses to ring A or B; the bridge structure comprises a backbone structure that forms a fused first ring; the backbone structure is saturated, comprises at least one heteroatom, and is optionally further substituted; and the ligand LA is coordinated to a metal M that can be coordinated to other ligands.
    Type: Application
    Filed: October 9, 2020
    Publication date: January 28, 2021
    Applicant: Universal Display Corporation
    Inventors: Zhiqiang JI, Lichang ZENG
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20210024557
    Abstract: A compound having the formula [LA]3-nIr[LB]n is disclosed.
    Type: Application
    Filed: October 9, 2020
    Publication date: January 28, 2021
    Applicant: UNIVERSAL DISPLAY CORPORATION
    Inventors: Zhiqiang JI, Jui-Yi TSAI, Lichang ZENG, Alexey Borisovich DYATKIN, Walter YEAGER, Eric MARGULIES, Pierre-Luc T. BOUDREAULT
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20210009615
    Abstract: A compound having the formula Ir(LA)n(LB)3?n, having the structure Formula I, is disclosed. In Formula I, each of Z1, Z2, Z3, and Z4 is CR2; X is O, S, or Se; n is an integer from 1 to 3; R1, R2, R3, R4, and R5 each independently represent mono- to a maximum possible number of substitutions, or no substitution; R1, R2, R3, R4, and R5 are each independently selected from a variety of substituents; any two substitutions in R1, R2, R3, R4, and R5 are optionally joined to form a ring; at least one pair of substitutions in R1, R2, R3, R4, and R5 are joined together to form a bridge structure comprising a backbone structure that forms a fused first ring, which can be further substituted; and the backbone structure is saturated. Organic light emitting devices and consumer products containing the compounds are also disclosed.
    Type: Application
    Filed: September 24, 2020
    Publication date: January 14, 2021
    Applicant: Universal Display Corporation
    Inventors: Lichang ZENG, Zhiqiang JI, Eric A. MARGULIES, Paul M. LAHTI, Michael S. WEAVER
  • Organic electroluminescent materials and devices
    Patent number: 10862054
    Abstract: New organometallic complexes having bis- or tris-heteroleptic ligands and large aspect ratio in one direction and their use in OLEDs to enhance the efficiency is disclosed.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: December 8, 2020
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Zhiqiang Ji, Lichang Zeng, Jui-Yi Tsai, Chun Lin, Chuanjun Xia, Alexey Borisovich Dyatkin, Walter Yeager
  • Organic electroluminescent materials and devices
    Patent number: 10862046
    Abstract: The present invention relates to mechanically linked emitter-emitter, host-host, and emitter-host materials. These materials may be useful in organic electroluminescence devices.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: December 8, 2020
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Zhiqiang Ji, Chun Lin, Lichang Zeng, Chuanjun Xia
  • Organic electroluminescent materials and devices
    Patent number: 10844085
    Abstract: A compound having the formula [LA]3-nIr[LB]n is disclosed. In the formula, LA is and LB is Formula I.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: November 24, 2020
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Zhiqiang Ji, Jui-Yi Tsai, Lichang Zeng, Alexey Borisovich Dyatkin, Walter Yeager, Eric Margulies, Pierre-Luc T. Boudreault
  • Organic electroluminescent materials and devices
    Patent number: 10844084
    Abstract: A compound including a first ligand LA having the formula: is disclosed.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: November 24, 2020
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Zhiqiang Ji, Lichang Zeng
  • Organic electroluminescent materials and devices
    Patent number: 10840458
    Abstract: Novel organic materials containing indolocarbazoles as donor connected with electron acceptors such as quinoxaline or dibenzoquinoxaline for PHOLED devices are disclosed.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: November 17, 2020
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Bin Ma, Alan Deangelis, Lichang Zeng, Chuanjun Xia, Jerald Feldman
  • Organic electroluminescent materials and devices
    Patent number: 10833276
    Abstract: This invention relates to carbazole- or indolocarbazole-containing donor acceptor type compounds with an ortho substitution on the aromatic group that is connected to carbazole. This unique substitution pattern will provide materials with superior performance for host applications. These compounds can also be used as delayed fluorescent emitters.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: November 10, 2020
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Lichang Zeng, Bin Ma, Chuanjun Xia
  • Organic electroluminescent materials and devices
    Patent number: 10822361
    Abstract: A compound having the formula Ir(LA)n(LB)3?n, having the structure, Formula I, is disclosed. In Formula I, Z1, Z2, Z3, and Z4 each independently are N or CR2; X is O, S, or Se; n is an integer from 1 to 3; R1, R2, R3, R4, and R5 each independently represent mono- to a maximum possible number of substitutions, or no substitution; R1, R2, R3, R4, and R5 are each independently selected from a variety of substituents; any two substitutions in R1, R2, R3, R4, and R5 are optionally joined to form a ring; at least one pair of substitutions in R1, R2, R3, R4, and R5 are joined together to form a bridge structure comprising a backbone structure that forms a fused first ring, which can be further substituted; and the backbone structure is saturated. Organic light emitting devices and consumer products containing the compounds are also disclosed.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: November 3, 2020
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Lichang Zeng, Zhiqiang Ji, Eric A. Margulies, Paul M. Lahti, Michael S. Weaver
  • Organic electroluminescent materials and devices
    Patent number: 10811618
    Abstract: Metal complexes containing heteroaryl and its analogues as ligands are disclosed in this application. These compounds may be useful as charge transport materials in OLEDs.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: October 20, 2020
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Lichang Zeng, Chuanjun Xia, Chun Lin
  • Organic electroluminescent materials and devices
    Patent number: 10804475
    Abstract: A compound having a ligand LA of Formula I, is described. In the structure of Formula I, A is five-membered or six-membered carbocyclic or heterocyclic ring; B is a five-membered carbocyclic or heterocyclic ring; each of Z0 to Z6 is selected from nitrogen and carbon; each R1 to R4 is independently selected from a variety of substituents; any two adjacent substituents are optionally joined or fused into a ring; ligand LA is coordinated to Pt; and the ligand LA is optionally linked with one or more other ligands. Formulations and devices, such as OLEDs, that include the first compound are also provided.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: October 13, 2020
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Lichang Zeng, Chuanjun Xia, Chun Lin
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20200303652
    Abstract: A method for fabricating an OLED using a mixture that is an evaporation source for a vacuum deposition process includes providing a container that contains the mixture, providing a substrate having a first electrode disposed thereon, depositing an organic layer over the first electrode by evaporating the mixture in the container in a high vacuum deposition tool, and depositing a second electrode over the organic layer.
    Type: Application
    Filed: June 10, 2020
    Publication date: September 24, 2020
    Applicant: Universal Display Corporation
    Inventors: Vadim ADAMOVICH, Lichang ZENG, Ting-Chih WANG, Chuanjun XIA, Michael S. WEAVER
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20200303657
    Abstract: The present invention includes a new series of benzofused heterocyclic ligands for metal complexes. These complexes show promising photophysical performance when incorporated into OLEDs.
    Type: Application
    Filed: March 17, 2020
    Publication date: September 24, 2020
    Applicant: Universal Display Corporation
    Inventors: MINGJUAN SU, WALTER YEAGER, ALAN DEANGELIS, BIN MA, JUI-YI TSAI, LICHANG ZENG, CHUANJUN XIA
  • Organic electroluminescent materials and devices
    Patent number: 10777749
    Abstract: Novel organic compounds containing aza-dibenzofuran, aza-dibenzothiophene and aza-dibenzoselenophene are disclosed in this application. These compounds improve OLED performance.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: September 15, 2020
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Walter Yeager, Lichang Zeng, Chuanjun Xia
  • Organic Electroluminescent Materials and Devices
    Publication number: 20200266363
    Abstract: Indolocarbazole materials with substitution attached at specific positions and methods to synthesize the same are disclosed. The materials are used as hosts for improving performance of organic electroluminescence devices.
    Type: Application
    Filed: May 6, 2020
    Publication date: August 20, 2020
    Inventors: Zhiqiang Ji, Lichang Zeng, Alexey Borisovich Dyatkin, Chuanjun Xia
  • Organic electroluminescent materials and devices
    Patent number: 10749113
    Abstract: A mixture containing three different compounds that is useful as a stable co-evaporation source material for a vacuum deposition tool is disclosed. The mixture comprises a first compound; a second compound; and a third compound that are all organic compounds and have different chemical structures from each other and each has an evaporation temperature T1, T2, and T3, respectively, in the range of 150 to 350° C. T1, T2, and T3 differ from each other by less than 20° C. The first compound has a concentration C1 in the first mixture and a concentration C2 in a film deposited by evaporating the first mixture in a high vacuum deposition tool under a predefined deposition condition where |(C1?C2)/C1| is less than 5%.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: August 18, 2020
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Vadim Adamovich, Lichang Zeng, Ting-Chih Wang, Chuanjun Xia, Michael S. Weaver
  • Organic electroluminescent materials and devices
    Patent number: 10745431
    Abstract: Metal complexes useful as emitters in OLEDs are disclosed.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: August 18, 2020
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Lichang Zeng, Michael S. Weaver, Eric A. Margulies, Zhiqiang Ji
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20200251668
    Abstract: A compound is disclosed that has a metal coordination complex structure having at least two ligands coordinated to the metal; wherein the compound has a first substituent R1 at one of the ligands' periphery; wherein a first distance is defined as the distance between the metal and one of the atoms in R1 where that atom is the farthest away from the metal among the atoms in R1; wherein the first distance is also longer than any other atom-to-metal distance between the metal and any other atoms in the compound; and wherein when a sphere having a radius r is defined whose center is at the metal and the radius r is the smallest radius that will allow the sphere to enclose all atoms in the compound that are not part of R1, the first distance is longer than the radius r by at least 2.9 ?.
    Type: Application
    Filed: April 21, 2020
    Publication date: August 6, 2020
    Applicant: Universal Display Corporation
    Inventors: Eric A. MARGULIES, Zhiqiang JI, Jui-Yi TSAI, Chun LIN, Alexey Borisovich DYATKIN, Mingjuan SU, Bin MA, Michael S. WEAVER, Julia J. BROWN, Lichang ZENG, Walter YEAGER, Alan DEANGELIS, Chuanjun XIA