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    ORGANIC ELECTROLUMINESCENT ELEMENT AND ELECTRONIC DEVICE
    1.
    发明申请
    ORGANIC ELECTROLUMINESCENT ELEMENT AND ELECTRONIC DEVICE 有权

    公开(公告)号：US20210242419A1

    公开(公告)日：2021-08-05

    申请号：US15734761

    申请日：2019-06-04

    Applicant: IDEMITSU KOSAN CO.,LTD.

    Inventor： Masato NAKAMURA ,  Emiko KAMBE ,  Hiroaki TOYOSHIMA ,  Kazuki NISHIMURA ,  Hitoshi KUMA

    IPC: H01L51/50 ,  H01L51/52

    Abstract: An organic electroluminescence device includes a first emitting unit, a first charge generating layer, a second emitting unit, a second charge generating layer, and a third emitting unit provided between an anode and a cathode in this order from the anode, in which the second charge generating layer includes an N layer close to the anode and a P layer close to the cathode, the third emitting layer contains a blue fluorescent compound, at least one of the first or second emitting layer contains a blue fluorescent compound, the third emitting unit includes a hole transporting zone between the second charge generating layer and the third emitting layer, the hole transporting zone is in contact with the second charge generating layer, and a thickness of the hole transporting zone is in a range from 5 nm to 40 nm and smaller than a thickness of the N layer.

    ORGANIC ELECTROLUMINESCENCE DEVICE
    10.
    发明申请
    ORGANIC ELECTROLUMINESCENCE DEVICE 有权
    有机电致发光器件

    公开(公告)号：US20130240858A1

    公开(公告)日：2013-09-19

    申请号：US13875844

    申请日：2013-05-02

    Applicant: IDEMITSU KOSAN CO., LTD.

    Inventor： Kazuki NISHIMURA ,  Yuichiro KAWAMURA ,  Toshinari OGIWARA ,  Hitoshi KUMA ,  Kenichi FUKUOKA ,  Chishio HOSOKAWA

    IPC: H01L51/50

    CPC classification number: H01L51/5016 ,  C09B1/00 ,  C09B57/00 ,  C09B57/10 ,  H01L27/3211 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0081 ,  H01L51/0085 ,  H01L51/5012 ,  H01L51/5048 ,  H01L2251/552

    Abstract: An organic electroluminescence device including opposite anode and cathode, and a hole-transporting region, an emitting layer and an electron-transporting region in sequential order from the anode between the anode and the cathode, wherein the emitting layer includes a red emitting portion, a green emitting portion, and a blue emitting portion; the blue emitting portion includes a host BH and a fluorescent dopant FBD; the triplet energy ETfbd of the fluorescent dopant FBD is larger than the triplet energy ETbh of the host BH; the green emitting portion includes a host GH and a phosphorescent dopant PGD; the electron-transporting region includes a common electron-transporting layer adjacent to the red emitting portion, the green emitting portion and the blue emitting portion; the common electron-transporting layer includes a material having a triplet energy ETel larger than ETbh; and the difference between the affinity of the host GH and the affinity of the material constituting the common electron-transporting layer is 0.4 eV or less.

    Abstract translation: 一种从阳极和阴极之间的阳极依次依次包括相对的阳极和阴极以及空穴传输区，发光层和电子传输区的有机电致发光器件，其中发光层包括红色发射部分， 绿色发光部分和蓝色发光部分; 蓝色发光部分包括主体BH和荧光掺杂剂FBD; 荧光掺杂剂FBD的三重态能量ETfbd大于主体BH的三线态能量ETbh; 绿色发光部分包括主体GH和磷光掺杂剂PGD; 电子传输区域包括与红色发射部分，绿色发射部分和蓝色发射部分相邻的公共电子传输层; 共同的电子传输层包括具有大于ETbh的三线态能量ETel的材料; 并且主体GH的亲和性与构成公共电子传输层的材料的亲和性之间的差为0.4eV以下。

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