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    Light-emitting element, light-emitting device, electronic device, lighting device, and organic compound
    4.
    发明授权
    Light-emitting element, light-emitting device, electronic device, lighting device, and organic compound 有权

    公开(公告)号：US11552256B2

    公开(公告)日：2023-01-10

    申请号：US16570062

    申请日：2019-09-13

    申请人： Semiconductor Energy Laboratory Co., Ltd.

    发明人： Satoshi Seo ,  Takao Hamada ,  Tatsuyoshi Takahashi ,  Yasushi Kitano ,  Hiroki Suzuki ,  Hideko Inoue

    IPC分类号： H01L51/50 ,  H01L51/00 ,  C07D403/14

    摘要： To provide a light-emitting element with an improved reliability, a light-emitting element with a high current efficiency (or a high quantum efficiency), and a novel dibenzo[f,h]quinoxaline derivative that is favorably used in a light-emitting element which is one embodiment of the present invention. A light-emitting element includes an EL layer between an anode and a cathode. The EL layer includes a light-emitting layer; the light-emitting layer contains a first organic compound having an electron-transport property and a hole-transport property, a second organic compound having a hole-transport property, and a light-emitting substance; the combination of the first organic compound and the second organic compound forms an exciplex; the HOMO level of the first organic compound is lower than the HOMO level of the second organic compound; and a difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is less than or equal to 0.4 eV.

    Light-emitting element, light-emitting device, electronic device, lighting device, and organic compound
    6.
    发明授权
    Light-emitting element, light-emitting device, electronic device, lighting device, and organic compound 有权

    公开(公告)号：US10418565B2

    公开(公告)日：2019-09-17

    申请号：US15988152

    申请日：2018-05-24

    申请人： Semiconductor Energy Laboratory Co., Ltd.

    发明人： Satoshi Seo ,  Takao Hamada ,  Tatsuyoshi Takahashi ,  Yasushi Kitano ,  Hiroki Suzuki ,  Hideko Inoue

    IPC分类号： H01L51/50 ,  H01L51/00 ,  C07D403/14

    摘要： To provide a light-emitting element with an improved reliability, a light-emitting element with a high current efficiency (or a high quantum efficiency), and a novel dibenzo[f,h]quinoxaline derivative that is favorably used in a light-emitting element which is one embodiment of the present invention. A light-emitting element includes an EL layer between an anode and a cathode. The EL layer includes a light-emitting layer; the light-emitting layer contains a first organic compound having an electron-transport property and a hole-transport property, a second organic compound having a hole-transport property, and a light-emitting substance; the combination of the first organic compound and the second organic compound forms an exciplex; the HOMO level of the first organic compound is lower than the HOMO level of the second organic compound; and a difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is less than or equal to 0.4 eV.

    Organic Compound, Light-Emitting Element, Light-Emitting Device, Electronic Device, and Lighting Device
    10.
    发明申请
    Organic Compound, Light-Emitting Element, Light-Emitting Device, Electronic Device, and Lighting Device 审中-公开

    公开(公告)号：US20180108847A1

    公开(公告)日：2018-04-19

    申请号：US15730065

    申请日：2017-10-11

    申请人： Semiconductor Energy Laboratory Co., Ltd.

    发明人： Hiroki Suzuki ,  Satoshi SEO ,  Tatsuyoshi TAKAHASHI ,  Hiromitsu KIDO

    IPC分类号： H01L51/00 ,  H01L51/52 ,  H01L51/50 ,  C07D405/10 ,  C07D409/10

    摘要： A novel organic compound is provided. That is, a novel organic compound that is effective in improving the element characteristics and reliability is provided. An organic compound has a benzonaphthofuran skeleton and a triazine skeleton and is represented by General Formula (G1) below. (In the formula, Ar1, Ar2, and Ar3 separately represent a substituted or unsubstituted phenylene group, and each of m and n is independently 0 or 1. R1 and R2 separately represent hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted methylfluorenyl group, a substituted or unsubstituted dimethylfluorenyl group, a substituted or unsubstituted spirofluorenyl group, a substituted or unsubstituted naphthyl group, or a substituted or unsubstituted phenanthrenyl group. B1 to B3 separately represent nitrogen or carbon, and at least one of B1 to B3 represents nitrogen. In addition, A is represented by General Formula (G1-1). Any one of R3 to R12 is bonded to Ar1, and the others separately represent hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted methylfluorenyl group, a substituted or unsubstituted dimethylfluorenyl group, a substituted or unsubstituted spirofluorenyl group, a substituted or unsubstituted naphthyl group, or a substituted or unsubstituted phenanthrenyl group. Furthermore, Q represents S or O.)