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    Color stable organic light emitting diode stack
    1.
    发明授权
    Color stable organic light emitting diode stack 有权

    公开(公告)号：US11145837B2

    公开(公告)日：2021-10-12

    申请号：US16688767

    申请日：2019-11-19

    Applicant: Universal Display Corporation

    Inventor： Hitoshi Yamamoto ,  Xin Xu ,  Michael S. Weaver ,  Vadim Adamovich

    IPC: H01L51/50

    Abstract: The present invention relates to OLED devices and stacks for OLED devices that include a symmetric emissive-layer architecture. In one embodiment, the present invention relates to an emissive stack having three layers, wherein the top and bottom layers emit light in the same or similar color region while the middle layer emits light in a different color region than the other two layers. In such an embodiment, the three layers are in contact with each other with no other layers in between. The symmetric emissive-layer architecture of the present invention can be used to improve the color stability of OLED devices.

    Color-stable organic light emitting diode stack
    3.
    发明授权
    Color-stable organic light emitting diode stack 有权

    公开(公告)号：US10510973B2

    公开(公告)日：2019-12-17

    申请号：US14612361

    申请日：2015-02-03

    Applicant: Universal Display Corporation

    Inventor： Hitoshi Yamamoto ,  Xin Xu ,  Michael S. Weaver

    IPC: H01L51/50 ,  H01L51/00 ,  H01L51/52 ,  H01L27/32

    Abstract: The present invention relates to OLED devices and stacks for OLED devices that include a symmetric emissive-layer architecture. In one embodiment, the present invention relates to an emissive stack having three layers, wherein the top and bottom layers emit light in the same or similar color region while the middle layer emits light in a different color region than the other two layers. In such an embodiment, the three layers are in contact with each other with no other layers in between. The symmetric emissive-layer architecture of the present invention can be used to improve the color stability of OLED devices.

    Organic electroluminescent materials and devices
    4.
    发明授权
    Organic electroluminescent materials and devices 有权

    公开(公告)号：US10457699B2

    公开(公告)日：2019-10-29

    申请号：US14268873

    申请日：2014-05-02

    Applicant: Universal Display Corporation

    Inventor： Pierre-Luc T. Boudreault ,  Vadim Adamovich ,  Hitoshi Yamamoto ,  Harvey Wendt ,  Chuanjun Xia

    IPC: H01L51/50 ,  C07F15/00 ,  H01L51/00 ,  C09K11/06 ,  C07D491/048 ,  H01L51/52

    Abstract: A compound that has the structure according to Formula M(LA)x(LB)y(LC)z: wherein ligand LA is ligand LB is and ligand LC is and devices and formulations containing these compounds are disclosed. In Formula M(LA)x(LB)y(LC)z: M is a metal having an atomic number greater than 40; x is 1 or 2; x+y+z is the oxidation state of the metal M; X1-X4 and A1-A8 are C or N; at least one of A1-A8 is N; X is O, S, or Se; two adjacent RB form a six-member aromatic ring E fused to ring B; wherein ring E can be substituted by RE; each RA-RE and R1-R4 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.

    PHOSPHORESCENT ORGANIC LIGHT EMITTING DEVICES HAVING A HOLE TRANSPORTING COHOST MATERIAL IN THE EMISSIVE REGION
    7.
    发明申请
    PHOSPHORESCENT ORGANIC LIGHT EMITTING DEVICES HAVING A HOLE TRANSPORTING COHOST MATERIAL IN THE EMISSIVE REGION 有权
    具有渗透区域的孔传输共聚物的磷光体有机发光器件

    公开(公告)号：US20140374728A1

    公开(公告)日：2014-12-25

    申请号：US14372594

    申请日：2013-01-23

    Applicant: Universal Display Corporation ,  Hodogaya Chemical Co., Ltd.

    Inventor： Vadim Adamovich ,  Hitoshi Yamamoto ,  Michael S. Weaver ,  Norimasa Yokoyama ,  Makoto Nagaoka ,  Naoaki Kabasawa

    IPC: H01L51/50 ,  H01L51/00

    CPC classification number: H01L51/5028 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1029 ,  C09K2211/1092 ,  H01L51/0052 ,  H01L51/0068 ,  H01L51/0072 ,  H01L51/5016 ,  H01L51/5024 ,  H01L51/5056 ,  H01L51/5096 ,  H01L2251/5384 ,  H05B33/10

    Abstract: An improved OLED includes an emissive layer disposed between a cathode and an anode where the emissive layer includes a multi-component host material and a phosphorescent emitter material. The host material includes at least a first host compound and a second host compound, where the first host compound is hole-transporting host compound having the general formula wherein R1, R2, R3, R4, R5, and R6 may be the same or different fluorine atom, chlorine atom, a deuterium atom, a cyano group, a trifluoromethyl group, a nitro group, linear or branched alkyl group (C1-C6), cyclo-alkyl group (C5-C10), linear or branched alkoxy group (C1-C6), cyclo-alkoxy group (C5˜C10), substituted or unsubstituted aromatic hydrocarbon group, substituted or unsubstituted aromatic heterocyclic group, substituted or unsubstituted condensed polycyclic aromatic group, r1, r4, r5=0, 1, 2, 3, or 4 r2, r3, r6;=0, 1, 2 or 3 n=0 or 1, and Ar1, Ar2, and Ar3 may be the same or different, substituted or unsubstituted aromatic hydrocarbon group, substituted or unsubstituted aromatic heterocyclic group, substituted or unsubstituted condensed polycyclic aromatic group, deuterium substituted aromatic hydrocarbon group, deuterium substituted aromatic heterocyclic group, or deuterium substituted condensed polycyclic aromatic group.

    Abstract translation: 改进的OLED包括设置在阴极和阳极之间的发射层，其中发射层包括多组分主体材料和磷光发射体材料。 主体材料至少包括第一主体化合物和第二主体化合物，其中第一主体化合物是具有以下通式的空穴传输性主体化合物：其中R 1，R 2，R 3，R 4，R 5和R 6可以相同或不同 氟原子，氯原子，氘原子，氰基，三氟甲基，硝基，直链或支链烷基（C1-C6），环烷基（C5-C10），直链或支链烷氧基（C1 -C 6），环烷氧基（C 5〜C 10），取代或未取代的芳香族烃基，取代或未取代的芳香族杂环基，取代或未取代的稠合多环芳基，r1，r4，r5 = 0,1,2,3， 或4r2，r3，r6; = 0,1,2或3n = 0或1，Ar1，Ar2和Ar3可以相同或不同，取代或未取代的芳香族烃基，取代或未取代的芳香族杂环基， 取代或未取代的稠合多环芳族基团，氘取代的芳族烃基 芴基，氘取代芳族杂环基或氘取代缩合多环芳基。

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