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    ORGANIC ELECTROLUMINESCENCE ELEMENT AND ELECTRONIC DEVICE
    12.
    发明公开
    ORGANIC ELECTROLUMINESCENCE ELEMENT AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：EP4108661A1

    公开(公告)日：2022-12-28

    申请号：EP21756750.2

    申请日：2021-01-22

    申请人： Idemitsu Kosan Co.,Ltd.

    发明人： SHIOMI Takushi ,  OGIWARA Toshinari ,  NAKANO Hiromi

    IPC分类号： C07D407/10 ,  C07D407/14 ,  C07D491/048 ,  C07D495/04 ,  C09K11/06 ,  C07D209/86 ,  C07D307/91 ,  H01L51/50

    摘要： An organic electroluminescence device includes an anode, an emitting layer, and a cathode in this order. The emitting layer contains a delayed fluorescent compound M2 and a compound M3 having at least one deuterium atom, and the compound M3 is not a compound having a partial structure represented by a formula (1C) or (2C). S 1 (M2) of the compound M2 and S 1 (M3) of the compound M3 satisfy a relationship of a numerical formula (Numerical Formula 1). In the formulae (1C) and (2C), Y 41 to Y 48 are each independently a N atom, CR, or a C atom bonded to another atom or the like in the compound M3, where each R is independently a H atom or a substituent, at least one of Y 41 to Y 48 is a N atom, and at least one of Y 41 to Y 48 is a C atom bonded to another atom or the like in the compound M3. S 1 M 3 > S 1 M 2

    ORGANIC ELECTROLUMINESCENT ELEMENT
    13.
    发明公开
    ORGANIC ELECTROLUMINESCENT ELEMENT 审中-公开

    公开(公告)号：EP4083033A1

    公开(公告)日：2022-11-02

    申请号：EP20907187.7

    申请日：2020-12-10

    申请人： NIPPON STEEL Chemical & Material Co., Ltd.

    发明人： TADA Masashi ,  INOUE Munetomo ,  UKIGAI Satoshi ,  TERADA Ayaka

    IPC分类号： C07D403/14 ,  C07D405/14 ,  C09K11/06 ,  C07D209/86 ,  H01L51/50

    摘要： Provided is a blue light emitting organic EL device having high emission efficiency and a long lifetime.
    An organic electroluminescent device comprising one or more light emitting layers between an anode and a cathode opposite to each other, wherein at least one of the light emitting layers contains an organic emission material having a difference between excited singlet energy (S1) and excited triplet energy (T1) (ΔEST) of 0.20 eV or less as a light emitting dopant, a first host selected from the compounds represented by the following general formula (1), and a second host selected from the compounds represented by the following general formula (2) .

    ORGANIC LIGHT-EMITTING MATERIAL AND ORGANIC LIGHT-EMITTING ELEMENT
    14.
    发明公开
    ORGANIC LIGHT-EMITTING MATERIAL AND ORGANIC LIGHT-EMITTING ELEMENT 审中-公开

    公开(公告)号：EP4039774A1

    公开(公告)日：2022-08-10

    申请号：EP22162160.0

    申请日：2010-12-02

    申请人： NIPPON STEEL Chemical & Material Co., Ltd. ,  Kyushu University, National University Corporation

    发明人： ENDO, Ayataka ,  ADACHI, Chihaya ,  YOSHIMURA, Kazuaki ,  KAWADA, Atsushi ,  MIYAZAKI, Hiroshi ,  KAI, Takahiro

    IPC分类号： C09K11/06 ,  C07D519/00 ,  H01L51/50 ,  C09B57/00 ,  H01L51/00 ,  H05B33/10 ,  C07D487/04 ,  C07D209/86

    摘要： Provided are a fluorescence-emitting material which improves luminous efficiency of an organic light-emitting element such as an organic EL element or an organic PL element and an organic light-emitting element using the fluorescence-emitting material. The fluorescence-emitting material includes a compound having an indolocarbazole skeleton represented by the following general formula (1). The organic light-emitting element includes an organic EL element including: a substrate; an anode; a cathode; and a light-emitting layer, the anode and the cathode being laminated on the substrate and the light-emitting layer being sandwiched between the anode and the cathode, in which the light-emitting layer includes: the organic light-emitting material; and as a host material, an organic compound having excited triplet energy higher than that of the organic light-emitting material. In the general formula (1): a ring A represents an aromatic ring represented by the formula (1a) to be fused with an adjacent ring; a ring B represents a heterocycle represented by the formula (lb) to be fused with an adjacent ring; Ar represents an aromatic hydrocarbon group or an aromatic heterocyclic group; R's each represent hydrogen or a monovalent substituent; and n represents an integer of 1 to 4.

    ORGANIC ELECTROLUMINESCENT ELEMENT
    16.
    发明公开
    ORGANIC ELECTROLUMINESCENT ELEMENT 审中-公开

    公开(公告)号：EP3960835A1

    公开(公告)日：2022-03-02

    申请号：EP20795178.1

    申请日：2020-04-17

    申请人： NIPPON STEEL Chemical & Material Co., Ltd.

    发明人： OGAWA, Junya ,  IKENAGA, Yuji ,  YOSHIDA, Kazunari ,  KITAHARA, Ikumi

    IPC分类号： C09K11/06 ,  C07D209/86 ,  C07D487/04 ,  H05B33/10 ,  H01L51/50

    摘要： Provided is an organic EL device having a low drive voltage, high efficiency, and high drive stability, and a material for an organic electroluminescent device suitable for the organic EL device. This material for an organic EL device includes: an indolocarbazole compound represented by General Formula (1).
    In addition, provided is an organic electroluminescent device in which this material for an organic electroluminescent device is used as a first host and carbazole compounds are used as second hosts.

    Here, a ring A is a heterocyclic ring represented by Formula (1a), L 1 to L 3 are a direct bond, an aromatic hydrocarbon group or an aromatic heterocyclic group, B 1 to B 3 represent a direct bond or a biphenyldiyl group represented by Formula (1b), and at least one of B 1 to B 3 is a biphenyldiyl group.