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    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    221.
    发明申请
    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES 审中-公开

    公开(公告)号：US20200185623A1

    公开(公告)日：2020-06-11

    申请号：US16789708

    申请日：2020-02-13

    Applicant: Universal Display Corporation

    Inventor： Chun LIN ,  Zhiqiang JI

    IPC: H01L51/00 ,  C09K11/02 ,  C09K11/06 ,  C07D519/00 ,  C07D487/04

    Abstract: An OLED incorporating a first emitting compound in its emissive layer is disclosed. The first emitting compound has the formula G1-Z, Formula I, where G1 is an electron acceptor group; and Z is an electron donor group, where Z has the formula: wherein each of R1 and R2 independently represents no substitution to the maximum allowable substitution; wherein R1 and R2 are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and wherein two or more of R1 and R2 substitutions are optionally joined or fused into a ring.

    ORGANIC ELECTROLUMINESCENT DEVICES
    223.
    发明申请
    ORGANIC ELECTROLUMINESCENT DEVICES 审中-公开

    公开(公告)号：US20190140194A1

    公开(公告)日：2019-05-09

    申请号：US16158406

    申请日：2018-10-12

    Applicant: UNIVERSAL DISPLAY CORPORATION

    Inventor： Eric A. MARGULIES ,  Zhiqiang JI ,  Nicholas J. THOMPSON ,  Geza SZIGETHY ,  Michael S. WEAVER ,  Jerald FELDMAN

    IPC: H01L51/00 ,  H01L51/50 ,  H01L51/52

    Abstract: An OLED structure including a first organic layer disposed between the anode and the cathode is disclosed. The first organic layer includes a primary phosphorescent emitter and a first host, and where one of the following conditions is true: (1) the first organic layer further includes a secondary emitter; or (2) the OLED further includes a second organic layer disposed between the anode and the cathode, wherein the second organic layer includes a secondary emitter. The phosphorescent emitter has a peak emission wavelength λmax that is ≥600 nm and ≤750 nm, the secondary emitter has a peak emission wavelength λmax that is ≥750 nm, and the first host has a lowest excited state triplet energy T1 that is at least 0.1 eV higher than that of the primary phosphorescent emitter.

    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    226.
    发明申请
    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES 审中-公开

    公开(公告)号：US20180287075A1

    公开(公告)日：2018-10-04

    申请号：US15706118

    申请日：2017-09-15

    Applicant: Universal Display Corporation

    Inventor： Jui-Yi TSAI ,  Alexey Borisovich DYATKIN ,  Zhiqiang JI ,  Walter YEAGER ,  Edward BARRON

    IPC: H01L51/00 ,  H01L51/50 ,  C09K11/06 ,  C07F15/00

    Abstract: A compound having a first ligand LA having the Formula: Formula I is disclosed, wherein rings A is a 5- or 6-membered carbocyclic or heterocyclic ring; wherein RA and RB each independently represent mono to the possible maximum number of substitution, or no substitution; wherein Z1 is carbon or nitrogen; wherein each RA and RB is independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; wherein any two substituents are optionally joined or fused into a ring; wherein X1 to X4 each independently represent a carbon or nitrogen; wherein at least one of X1 to X4 is nitrogen; wherein the ligand LA is coordinated to a metal M; wherein the metal M can be coordinated to other ligands; and wherein the ligand LA is optionally linked with other ligands to comprise a tridentate, tetradentate, pentadentate or hexadentate ligand.

    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    227.
    发明申请
    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES 审中-公开

    公开(公告)号：US20180130962A1

    公开(公告)日：2018-05-10

    申请号：US15692684

    申请日：2017-08-31

    Applicant: UNIVERSAL DISPLAY CORPORATION

    Inventor： Zhiqiang JI ,  Lichang ZENG ,  Mingjuan SU

    IPC: H01L51/00 ,  C09K11/06 ,  C07F15/00

    Abstract: A composition that includes a first compound where the first compound is capable of functioning as an emitter in an organic light emitting device at room temperature is disclosed. A phosphorescent emitter compound useful in organic light emitting devices is disclosed where the compound has at least one aromatic ring and at least one substituent R, wherein each of the at least one R is directly bonded to one of the aromatic rings, wherein each of the at least one R has the formula of

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