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    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING SAME
    1.
    发明申请
    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING SAME 有权

    公开(公告)号：US20210408387A1

    公开(公告)日：2021-12-30

    申请号：US17351073

    申请日：2021-06-17

    Applicant: Samsung Display Co., Ltd.

    Inventor： Namsu KANG ,  Minho PARK ,  Dongkyu LEE ,  Jongwon LEE ,  Hyunshik LEE

    IPC: H01L51/00

    Abstract: A light-emitting device includes: a first electrode; a second electrode; m emission units between the first electrode and the second electrode; and m−1 charge generation layer(s), each located between two adjacent emission units, and including m−1 n-type charge generation layer(s) and m−1 p-type charge generation layer(s). The m emission units each include a hole transport region, an emission layer, and an electron transport region. A first hole transport region in a first emission unit closest to the first electrode may include a hole transfer layer and a hole injection layer and/or a hole transport layer. The hole transfer layer may be a single layer consisting of an electron-transporting compound including a phosphine oxide group (P═O), a phosphine sulfide group (P═S), a π electron-deficient nitrogen-containing C1-C60 cyclic group, or any combination thereof. A highest occupied molecular orbital (HOMO) energy level of the hole transfer layer may be about −6.0 eV to about −5.3 eV.

    ORGANIC LIGHT EMITTING DIODE
    2.
    发明申请
    ORGANIC LIGHT EMITTING DIODE 有权

    公开(公告)号：US20170133616A1

    公开(公告)日：2017-05-11

    申请号：US15191947

    申请日：2016-06-24

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Myunghwan KIM ,  Minho PARK ,  Wonjun SONG ,  Taewoo LEE

    IPC: H01L51/50 ,  H01L51/52

    CPC classification number: H01L51/504 ,  H01L27/3209 ,  H01L51/5206 ,  H01L51/5218 ,  H01L51/5221 ,  H01L51/5234 ,  H01L2251/301 ,  H01L2251/303

    Abstract: An organic light emitting diode, including a first electrode; a first light emitting unit on the first electrode; a charge generating layer on the first light emitting unit, the charge generating layer including a plurality of organic layers; a second light emitting unit on the charge generating layer; and a second electrode on the second light emitting unit, the plurality of organic layers of the charge generating layer including a first organic layer and a second organic layer that are respectively adjacent to the first light emitting unit and the second light emitting unit; and a third organic layer between the first organic layer and the second organic layer, the first organic layer and the second organic layer being one of a p-type layer or a hole transport layer, and the third organic layer being the other of the p-type layer or the hole transport layer.

    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE SAME
    4.
    发明申请
    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE SAME 有权

    公开(公告)号：US20220059793A1

    公开(公告)日：2022-02-24

    申请号：US17393870

    申请日：2021-08-04

    Applicant: Samsung Display Co., Ltd.

    Inventor： Namsu KANG ,  Dongkyu LEE ,  Minkyung KIM ,  Minho PARK ,  Huiju PARK ,  Jongwon LEE ,  Hyunshik LEE

    IPC: H01L51/50 ,  C09K11/02 ,  C09K11/06

    Abstract: A light-emitting device includes a first electrode, a second electrode, m emitting units, and m−1 charge generation layers. The m emitting units each include a hole transport region, an emission layer, and an electron transport region. At least one emission layer of the m emitting units includes a first emission layer and a second emission layer, and at least one hole transport region adjacent to a p-type charge generation layer includes a multi-layered hole transport layer consisting of a first non-doped layer, a doped layer, and a second non-doped layer. The first non-doped layer and the second non-doped layer each independently consist of a hole transport material, the doped layer includes a hole transport material and a p-dopant, and the hole transport region adjacent to the first electrode does not include the multi-layered hole transport layer. An electronic apparatus including the light-emitting device is also provided.

    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：US20220115619A1

    公开(公告)日：2022-04-14

    申请号：US17343549

    申请日：2021-06-09

    Applicant: Samsung Display Co., Ltd.

    Inventor： Jongwon LEE ,  Namsu KANG ,  Minkyung KIM ,  Minho PARK ,  Huiju PARK ,  Dongkyu LEE ,  Hyunshik LEE

    IPC: H01L51/50 ,  H01L51/00

    Abstract: A light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an interlayer between the first electrode and the second electrode and including an emission layer stack, wherein the emission layer stack includes: a first emission layer including a first host and a first dopant; and a second emission layer including a second host, a second dopant, and an electron transport compound, wherein the first host and the second host are different compounds from each other, the first emission layer is in contact with the second emission layer, and the second emission layer is closer to the second electrode than the first emission layer.

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