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    Light-Emitting Device, Light-Emitting Apparatus, Electronic Device, and Lighting Device
    31.
    发明申请
    Light-Emitting Device, Light-Emitting Apparatus, Electronic Device, and Lighting Device 有权

    公开(公告)号：US20220115615A1

    公开(公告)日：2022-04-14

    申请号：US17423665

    申请日：2020-01-16

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Yusuke TAKITA ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Takumu OKUYAMA ,  Satoshi SEO

    IPC: H01L51/50 ,  H01L51/00

    Abstract: A novel light-emitting device is provided. Alternatively, a light-emitting device having a long driving lifetime at high temperature is provided. The light-emitting device includes an anode, a cathode, and an EL layer positioned between the anode and the cathode. The EL layer includes a first layer, a second layer, a third layer, and a light-emitting layer in this order from the anode side. The first layer includes a first organic compound and a second organic compound. The second layer includes a third organic compound. The third layer includes a fourth organic compound. The light-emitting layer includes a fifth organic compound and an emission center substance. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. A difference between HOMO levels of the fourth organic compound and the fifth organic compound is less than or equal to 0.24 eV.

    LIGHT-EMITTING DEVICE, LIGHT-EMITTING APPARATUS, ELECTRONIC DEVICE, AND LIGHTING DEVICE
    32.
    发明申请
    LIGHT-EMITTING DEVICE, LIGHT-EMITTING APPARATUS, ELECTRONIC DEVICE, AND LIGHTING DEVICE 有权

    公开(公告)号：US20210367177A1

    公开(公告)日：2021-11-25

    申请号：US16977663

    申请日：2019-09-20

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Satoshi SEO ,  Tsunenori SUZUKI ,  Takumu OKUYAMA ,  Yusuke TAKITA ,  Naoaki HASHIMOTO ,  Hiromi SEO

    IPC: H01L51/50 ,  H01L51/00

    Abstract: A light-emitting device including an EL layer including a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side is provided. The first layer contains a first organic compound and a second organic compound. The light-emitting layer contains a sixth organic compound. The fourth layer contains a seventh organic compound. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. A HOMO level of the second organic compound is higher than or equal to −5.7 eV and lower than or equal to −5.2 eV. A HOMO level of the third organic compound is equal to or deeper than the HOMO level of the second organic compound. A difference between the HOMO levels of the second organic compound and the third organic compound is less than or equal to 0.2 eV. A LUMO level of the sixth organic compound is shallower than a LUMO level of the seventh organic compound.

    ORGANIC COMPOUND, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE
    33.
    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：US20200028095A1

    公开(公告)日：2020-01-23

    申请号：US16483304

    申请日：2018-01-26

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Hiroshi KADOMA ,  Hiroki SUZUKI ,  Yusuke TAKITA ,  Tsunenori SUZUKI ,  Satoshi SEO

    IPC: H01L51/00 ,  C07D209/86 ,  C09K11/06

    Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving element characteristics and reliability is provided.The organic compound includes an anthracene skeleton and a carbazole skeleton, and is represented by the following general formula (G1). (In the formula, Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms, and when the arylene group has substituents, the substituents may be bonded to each other to form a ring. Furthermore, Cz represents a substituted or unsubstituted carbazole skeleton. Furthermore, each of R1 to R9 and R11 to R17 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms. Furthermore, at least one of the following pairs may form a fused ring: R12 and R13; R14 and R15; R15 and R16; or R16 and R17.

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