利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

7 条记录 (耗时 0.01 秒)

    ORGANIC ELECTROLUMINESCENT ELEMENT
    2.
    发明公开
    ORGANIC ELECTROLUMINESCENT ELEMENT 审中-公开

    公开(公告)号：EP4261909A1

    公开(公告)日：2023-10-18

    申请号：EP21903465.9

    申请日：2021-12-09

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

    发明人： KITAHARA, Ikumi ,  HAYASHI, Kentaro ,  OGAWA, Junya ,  UEDA, Tokiko

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

    摘要： To provide an organic electroluminescent device (organic EL device) that is driven at a low voltage and that has high efficiency and lifetime characteristics. The organic EL device includes a light-emitting layer between an anode and a cathode opposed to each other, in which the light-emitting layer contains a first host selected from an indolocarbazole compound having a triphenylene ring-containing group with which an N-position of an indolocarbazole ring is directly or indirectly substituted, a second host selected from a biscarbazole compound having a structure in which two carbazole rings are linked at a carbon position, and a light-emitting dopant material.

    ORGANIC ELECTROLUMINESCENCE ELEMENT
    4.
    发明公开
    ORGANIC ELECTROLUMINESCENCE ELEMENT 审中-公开

    公开(公告)号：EP3770985A1

    公开(公告)日：2021-01-27

    申请号：EP19771132.8

    申请日：2019-03-05

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

    发明人： UEDA, Tokiko ,  SAWADA, Yuichi

    IPC分类号： H01L51/50

    摘要： Provided is an organic EL device, which shows high luminous efficiency, low voltage, and high driving stability. The organic EL device is an organic electroluminescent device having laminated, on a substrate, an anode, organic layers, and a cathode, wherein at least one layer of the organic layers uses materials including a carborane compound having a carborane ring and a biscarbazole ring, and an indolocarbazole compound having one or two indolocarbazole rings. The carborane compound is represented by the following general formula (1) where H A represents a carborane ring-containing group.

    ORGANIC ELECTROLUMINESCENT DEVICE
    5.
    发明公开
    ORGANIC ELECTROLUMINESCENT DEVICE 审中-公开

    公开(公告)号：EP4261908A1

    公开(公告)日：2023-10-18

    申请号：EP21903464.2

    申请日：2021-12-09

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

    发明人： KITAHARA, Ikumi ,  HAYASHI, Kentaro ,  OGAWA, Junya ,  UEDA, Tokiko

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

    摘要： To provide a practically useful organic EL device having a low voltage, high efficiency and lifetime characteristics. An organic EL device including a light-emitting layer between an anode and a cathode opposite to each other, in which the light-emitting layer contains a first host selected from a compound represented by the following general formula (1), a second host selected from a compound represented by the following general formula (2), and a light-emitting dopant material.

    In the general formula (1), a ring A is an aromatic ring represented by formula (1a), a ring B is a heterocycle represented by formula (1b), Tp represents a triphenylene group, L represents an aromatic hydrocarbon group having 6 to 18 carbon atoms, and X represents N or C-H. In the general formula (2), a ring C represents an aromatic ring represented by formula (2a) and a ring D represents a heterocycle represented by formula (2b).