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    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    4.
    发明申请
    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES 有权

    公开(公告)号：US20230122208A1

    公开(公告)日：2023-04-20

    申请号：US18061754

    申请日：2022-12-05

    申请人： UNIVERSAL DISPLAY CORPORATION

    发明人： Zhiqiang Ji ,  Lichang ZENG ,  Chun LIN

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

    摘要： According to an aspect of the present disclosure, a compound having a metal planar tetradentate coordination configuration is disclosed. In the compounds, the metal M is Pt or Pd; the four coordinating atoms are Z1, Z2, Z3, and Z4 and are each selected from N, C, and O. The compound includes a substituent R, and atoms M, Z1, Z2, Z3, and Z4 are used to define a first plane that passes through the metal M and is positioned to have a minimum sum of shortest distances with Z1, Z2, Z3, and Z4. At least one non-hydrogen atom in R falls within a distal circle of a cylinder extending perpendicular to the first plane, where the distal circle of the cylinder is a height h from the base circle and the height h ranges from 3.3 Å to 4.8 Å.

    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    7.
    发明申请
    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES 有权

    公开(公告)号：US20220271240A1

    公开(公告)日：2022-08-25

    申请号：US17669821

    申请日：2022-02-11

    申请人： UNIVERSAL DISPLAY CORPORATION

    发明人： Zhiqiang JI ,  Chun LIN ,  Pierre-Luc T. BOUDREAULT

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

    摘要： A compound comprising a ligand LA of Formula I, is disclosed. In Formula I, ring A is a 5- or 6-membered ring; R is formula II, and is fused to ring B to form ring C; each of X1, X2, X3, and X4 is carbon or nitrogen; X is selected from a variety of bivalent moieties; each R1 to R4, R′, and R″ is hydrogen or a substituent; at least one 6-membered ring carbon that is part of Ring A, Ring B, or a fused ring system comprising Ring A or Ring B is substituted with deuterium; and K1 is selected from a direct bond, O, and S. Formulations, OLEDs, and consumer products including the compound are also disclosed.

    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    8.
    发明申请
    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES 有权

    公开(公告)号：US20220246851A1

    公开(公告)日：2022-08-04

    申请号：US17572735

    申请日：2022-01-11

    申请人： UNIVERSAL DISPLAY CORPORATION

    发明人： Tyler FLEETHAM ,  Chun LIN

    IPC分类号： H01L51/00 ,  C09K11/02 ,  C09K11/06

    摘要： Provided is an OLED having an emissive region having a first compound and a second compound where the first compound is capable of energy transfer to the second compound, and capable of functioning as a phosphorescent emitter in an OLED at room temperature. The second compound meets at least one of the following two conditions: (1) the second compound is capable of functioning as a TADF emitter in an OLED at room temperature, and (2) the second compound is capable of functioning as a fluorescent emitter in an OLED at room temperature. The second compound also includes at least one deuterium atom. Also provided is a formulation including the first compound and the second compound. Also disclosed is a premixed co-evaporation source that is a mixture of the first compound and the second compound.

    OLED DEVICE WITH CONTROLLABLE BRIGHTNESS
    10.
    发明申请
    OLED DEVICE WITH CONTROLLABLE BRIGHTNESS 有权

    公开(公告)号：US20220108654A1

    公开(公告)日：2022-04-07

    申请号：US17554266

    申请日：2021-12-17

    申请人： Universal Display Corporation

    发明人： Michael HACK ,  Chun LIN

    IPC分类号： G09G3/3208 ,  G09G3/20

    摘要： Devices and techniques are provided in which an OLED panel is operated in two modes. The first mode operates in a standard way to display an image or video or otherwise illuminate sub-pixels of the panel. In the second mode, some pixels are operated at a lower brightness than in the first mode. The use of multiple modes allows for improved sub-pixel lifetime and reduced sub-pixel and image degradation.