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    Organic Compound, Light-Emitting Element, Light-Emitting Device, Electronic Device, Display Device, and Lighting Device
    43.
    发明申请
    Organic Compound, Light-Emitting Element, Light-Emitting Device, Electronic Device, Display Device, and Lighting Device 有权

    公开(公告)号：US20220194954A1

    公开(公告)日：2022-06-23

    申请号：US17574752

    申请日：2022-01-13

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Kyoko Takeda ,  Harue Osaka ,  Satoshi Seo ,  Tsunenori Suzuki ,  Naoaki Hashimoto ,  Yusuke Takita

    IPC: C07D491/048 ,  C07D495/00 ,  H01L51/00

    Abstract: A novel organic compound is provided. Alternatively, an organic compound that exhibits light emission with favorable chromaticity is provided. Alternatively, an organic compound that exhibits blue light emission with favorable chromaticity is provided. Alternatively, an organic compound with favorable emission efficiency is provided. Alternatively, an organic compound having a high carrier-transport property is provided. Alternatively, an organic compound with favorable reliability is provided. An organic compound including at least one amino group in which any one of a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted carbazolyl group is boneded to any one of a substituted or unsubstituted naphthobisbenzofuran skeleton, a substituted or unsubstituted naphthobisbenzothiophene skeleton, and a substituted or unsubstituted naphthobenzofuranobenzothiophene skeleton is provided.

    Light-emitting element, light-emitting device, electronic device, and lighting device
    44.
    发明授权
    Light-emitting element, light-emitting device, electronic device, and lighting device 有权

    公开(公告)号：US11088335B2

    公开(公告)日：2021-08-10

    申请号：US16381612

    申请日：2019-04-11

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Satoshi Seo ,  Tsunenori Suzuki ,  Naoaki Hashimoto

    IPC: H01L51/00 ,  H01L51/50 ,  H01L51/52

    Abstract: Provided is a novel light-emitting element, a light-emitting element with a long lifetime, or a light-emitting element with high emission efficiency. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes at least a light-emitting layer containing a fluorescent substance and a host material, a first electron-transport layer containing a first electron-transport material, and a second electron-transport layer containing a second electron-transport material, which are in contact with each other and in this order. The LUMO level of each of the host material and the second electron-transport material is higher than the LUMO level of the first electron-transport material.

    Light-Emitting Device, Electronic Device, and Lighting Device
    45.
    发明申请
    Light-Emitting Device, Electronic Device, and Lighting Device 有权

    公开(公告)号：US20210104580A1

    公开(公告)日：2021-04-08

    申请号：US17104398

    申请日：2020-11-25

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Satoshi Seo ,  Toshiki Sasaki ,  Tsunenori Suzuki ,  Sachiko Kawakami ,  Naoaki Hashimoto

    IPC: H01L27/32 ,  C07D307/77 ,  C09K11/06 ,  H01L51/00 ,  H01L51/50 ,  H01L51/52

    Abstract: A light-emitting device, an electronic device, or a lighting device with low power consumption and high reliability is provided. The light-emitting device includes a first light-emitting element, a second light-emitting element, a third light-emitting element, and a fourth light-emitting element. The first to fourth light-emitting elements include the same EL layer between an anode and a cathode. The EL layer includes a first light-emitting layer and a second light-emitting layer. The first light-emitting layer contains a fluorescent substance. The peak wavelength of an emission spectrum of the fluorescent substance in a toluene solution of the fluorescent substance is 440 nm to 460 nm, preferably 440 nm to 455 nm. The second light-emitting layer contains a phosphorescent substance. The first light-emitting element exhibits blue emission. The second light-emitting element exhibits green emission. The third light-emitting element exhibits red emission. The fourth light-emitting element exhibits yellow emission.

    Light-emitting element, light-emitting device, electronic device, and lighting device
    47.
    发明授权
    Light-emitting element, light-emitting device, electronic device, and lighting device 有权

    公开(公告)号：US10388900B2

    公开(公告)日：2019-08-20

    申请号：US15658622

    申请日：2017-07-25

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Satoshi Seo ,  Tsunenori Suzuki ,  Yusuke Takita ,  Naoaki Hashimoto

    IPC: H01L51/00 ,  H01L51/50 ,  H01L51/56

    Abstract: A novel light-emitting element is provided. A light-emitting element with a long lifetime is provided. A light-emitting element with high emission efficiency is provided. In the light-emitting element, an EL layer includes a hole-injection layer, a first hole-transport layer, a second hole-transport layer, a third hole-transport layer, a light-emitting layer, a first electron-transport layer, and a second electron-transport layer in this order; the hole-injection layer includes an organic acceptor; the LUMO level of the host material is higher than that of the first electron-transport layer; the LUMO level of the second electron-transport layer is higher than that of the first electron-transport layer; the host material is a substance including a condensed aromatic ring skeleton; and the first and second electron-transport layers each include a substance having a heteroaromatic ring skeleton.

    Light-emitting element, light-emitting device, electronic device, and lighting device
    48.
    发明授权
    Light-emitting element, light-emitting device, electronic device, and lighting device 有权

    公开(公告)号：US10263194B2

    公开(公告)日：2019-04-16

    申请号：US15154121

    申请日：2016-05-13

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Satoshi Seo ,  Tsunenori Suzuki ,  Naoaki Hashimoto

    IPC: H01L51/00 ,  H01L51/50 ,  H01L51/52

    Abstract: Provided is a novel light-emitting element, a light-emitting element with a long lifetime, or a light-emitting element with high emission efficiency. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes at least a light-emitting layer containing a fluorescent substance and a host material, a first electron-transport layer containing a first electron-transport material, and a second electron-transport layer containing a second electron-transport material, which are in contact with each other and in this order. The LUMO level of each of the host material and the second electron-transport material is higher than the LUMO level of the first electron-transport material.

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