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    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE SAME
    2.
    发明申请
    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE SAME 有权

    公开(公告)号：US20230113852A1

    公开(公告)日：2023-04-13

    申请号：US17722378

    申请日：2022-04-17

    申请人： Samsung Display Co., Ltd.

    发明人： Jongwon LEE ,  Seungcheol Kim ,  Heungsu Park ,  Changmin Lee ,  Hyunshik Lee

    IPC分类号： H01L51/50 ,  H01L51/00

    摘要： A light-emitting device including: m emitting units located between a first electrode and a second electrode; and m−1 charge generation units, each located between two neighboring emitting units among the m emitting units and including an n-type charge generation layer and a p-type charge generation layer. The m emitting units may each include an emission layer, at least one of the m emission layers comprises a first emission layer and a second emission layer that are in contact with each other, the first emission layer includes a first host, a second host, and a first dopant, the second emission layer includes a third host, a fourth host, and a second dopant, the first host and the second host form a first exciplex, the third host and the fourth host form a second exciplex, and the first dopant is a delayed fluorescence dopant, and the second dopant is a phosphorescent dopant.

    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS COMPRISING LIGHT-EMITTING DEVICE
    4.
    发明申请
    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS COMPRISING LIGHT-EMITTING DEVICE 有权

    公开(公告)号：US20230113809A1

    公开(公告)日：2023-04-13

    申请号：US17723353

    申请日：2022-04-18

    申请人： Samsung Display Co., Ltd.

    发明人： Heungsu Park ,  Namsu Kang ,  Songeun Lee ,  Jongwon Lee ,  Hyunshik Lee ,  Wonsuk Han

    IPC分类号： H01L51/00

    摘要： A light emitting device in which: a) an absolute value of a lowest unoccupied molecular orbital (LUMO) energy level of a first electron transporting compound (ET-1) is smaller than an absolute value of a LUMO energy level of a host compound (H-1), b) an absolute value of a LUMO energy level of a second electron transporting compound (ET-2) is smaller than an absolute value of a LUMO energy level of a third electron transporting compound (ET-3), c) and an absolute value of a LUMO energy level of the second electron transporting compound (ET-2) is smaller than an absolute value of a LUMO energy level of the first electron transporting compound (ET-1).

    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE SAME
    7.
    发明申请
    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE SAME 有权

    公开(公告)号：US20220149288A1

    公开(公告)日：2022-05-12

    申请号：US17517523

    申请日：2021-11-02

    申请人： Samsung Display Co., Ltd.

    发明人： Jongwon Lee ,  Namsu Kang ,  Minho Park ,  Heungsu Park ,  Minkyung Kim ,  Hyunshik Lee

    IPC分类号： H01L51/00

    摘要： A light-emitting device includes: a first electrode; a second electrode facing the first electrode; m light-emitting units stacked between the first electrode and the second electrode and including an emission layer; and m−1 charge generation layers respectively between two neighboring light-emitting units among the m light-emitting units, wherein m is an integer of 2 or more, at least one of the m light-emitting units includes an n-doped electron transport layer between the emission layer and the second electrode, a charge generation layer on the n-doped electron transport layer includes a p-type charge generation layer in direct contact with the n-doped electron transport layer, the n-doped electron transport layer includes a first electron transport material, a second electron transport material, and a metal, the first electron transport material and the second electron transport material are different from each other.

    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE SAME
    9.
    发明公开
    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE SAME 审中-公开

    公开(公告)号：US20240237391A1

    公开(公告)日：2024-07-11

    申请号：US18360048

    申请日：2023-07-27

    申请人： Samsung Display Co., Ltd.

    发明人： Jongwon Lee ,  Seungcheol Kim ,  Heungsu Park ,  Changmin Lee ,  Hyunshik Lee

    IPC分类号： H10K50/19 ,  H10K50/13

    CPC分类号： H10K50/19 ,  H10K50/131 ,  H10K2102/351

    摘要： A tandem light-emitting device including a first electrode, a second electrode facing the first electrode, m light-emitting units stacked between the first electrode and the second electrode, the m light-emitting units each including an emission layer, and m−1 charge generation layers between two adjacent light-emitting units of the m light-emitting units. M is an integer of 5 or more. The m light-emitting units include first to fifth light-emitting units, in order of proximity to the first electrode. The m−1 charge generation layers include first to fourth charge generation layers, in order of proximity to the first electrode. At least one of the first to fifth light-emitting units emits blue light. At least one of the first to fifth light-emitting units emits green light. The formula 3≤D/(2*λb)≤ 4 is satisfied.