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    ORGANIC ELECTROLUMINESCENT DEVICES
    26.
    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.

    OLED DEVICE HAVING ENHANCEMENT LAYER(S)
    27.
    发明申请
    OLED DEVICE HAVING ENHANCEMENT LAYER(S) 审中-公开

    公开(公告)号：US20180219182A1

    公开(公告)日：2018-08-02

    申请号：US15935233

    申请日：2018-03-26

    Applicant: Universal Display Corporation

    Inventor： Nicholas J. THOMPSON ,  Marc A. BALDO ,  Michael S. WEAVER ,  Vinod M. MENON

    IPC: H01L51/52 ,  H01L51/50

    CPC classification number: H01L51/5262 ,  H01L51/5044 ,  H01L51/5203 ,  H01L51/5225 ,  H01L51/5234 ,  H01L2251/558

    Abstract: An OLED is disclosed that includes an enhancement layer having optically active metamaterials, or hyperbolic metamaterials, which transfer radiative energy from the organic emissive material to a non-radiative mode, wherein the enhancement layer is disposed over the organic emissive layer opposite from the first electrode, and is positioned no more than a threshold distance away from the organic emissive layer, wherein the organic emissive material has a total non-radiative decay rate constant and a total radiative decay rate constant due to the presence of the enhancement layer, and the threshold distance is where the total non-radiative decay rate constant is equal to the total radiative decay rate constant; and an outcoupling layer disposed over the enhancement layer, wherein the outcoupling layer scatters radiative energy from the enhancement layer to free space.

    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    29.
    发明申请
    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES 有权

    公开(公告)号：US20250127047A1

    公开(公告)日：2025-04-17

    申请号：US18754484

    申请日：2024-06-26

    Applicant: Universal Display Corporation

    Inventor： Eric A. MARGULIES ,  Michael S. WEAVER ,  Vadim ADAMOVICH

    IPC: H10K85/60 ,  C07B59/00 ,  C09K11/06 ,  H10K50/155 ,  H10K50/165 ,  H10K85/20 ,  H10K85/30 ,  H10K85/40 ,  H10K101/00 ,  H10K101/30

    Abstract: An organic electroluminescent device (OLED) comprising an anode; a cathode; and an emissive layer, disposed between the anode and the cathode is provided. The emissive layer comprises a phosphorescent dopant, a first host, and a second host, where the first host is a hole transporting host, the second host is an electron transporting host, the first host has a HOMO energy≤−5.45 eV and/or the first host comprises a structure of Formula V: and the phosphorescent dopant has a formula Ir(LA)x(LB)y(LC)z. In formula Ir(LA)x(LB)y(LC)z, ligand LA has a structure of Formula I, where: moiety A is a ring; moiety B is a fused ring structure comprising at least three rings; K is a direct bond or a linker; Z1 and Z2 are C or N; each RA and RB is hydrogen or a General Substituent defined herein. Consumer products containing the OLED are also provided.

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