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    Light-Emitting Apparatus, Lighting Device, Display Device, Module, and Electronic Device
    51.
    发明申请
    Light-Emitting Apparatus, Lighting Device, Display Device, Module, and Electronic Device 有权

    公开(公告)号：US20220069025A1

    公开(公告)日：2022-03-03

    申请号：US17414502

    申请日：2019-12-19

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Shunpei YAMAZAKI ,  Daisuke KUBOTA ,  Nobuharu OHSAWA ,  Takeyoshi WATABE ,  Taisuke KAMADA

    IPC: H01L27/32 ,  H01L51/52

    Abstract: A display device that has a function of emitting visible light and infrared light and a function of detecting light. The display device is a display device including a first light-emitting device, a second light-emitting device, and a light-receiving device, in a display portion. The first light-emitting device includes a first pixel electrode, a first optical adjustment layer, a first light-emitting layer, a second light-emitting layer, and a common electrode. The second light-emitting device includes a second pixel electrode, a second optical adjustment layer, the first light-emitting layer, the second light-emitting layer, and the common electrode. The light-receiving device includes a third pixel electrode, an active layer, and the common electrode. The active layer includes an organic compound. The first light-emitting device emits infrared light emitted by the first light-emitting layer. The second light-emitting device emits visible light emitted by the second light-emitting layer. The light-receiving device has a function of absorbing at least part of visible light and infrared light.

    Light-Emitting Element, Display Device, Electronic Device, and Lighting Device
    53.
    发明申请
    Light-Emitting Element, Display Device, Electronic Device, and Lighting Device 有权

    公开(公告)号：US20210159440A1

    公开(公告)日：2021-05-27

    申请号：US17161982

    申请日：2021-01-29

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Satomi MITSUMORI ,  Takeyoshi WATABE ,  Satoshi SEO ,  Yuko KUBOTA

    IPC: H01L51/50 ,  H01L27/32 ,  H01L51/00

    Abstract: A light-emitting element having low driving voltage and high emission efficiency is provided. In the light-emitting element, a combination of a guest material and a host material forms an exciplex. The guest material is capable of converting triplet excitation energy into light emission. Light emission from the light-emitting layer includes light emission from the guest material and light emission from the exciplex. The percentage of the light emission from the exciplex to the light emission from the light-emitting layer is greater than 0 percent and less than or equal to 60 percent. The energy after subtracting the energy of light emission from the exciplex from the energy of light emission from the guest material is greater than 0 eV and less than or equal to 0.23 eV.

    Light-Emitting Element, Light-Emitting Device, Display Device, and Electronic Device
    59.
    发明申请
    Light-Emitting Element, Light-Emitting Device, Display Device, and Electronic Device 有权
    发光元件，发光装置，显示装置和电子装置

    公开(公告)号：US20160190500A1

    公开(公告)日：2016-06-30

    申请号：US14978034

    申请日：2015-12-22

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Takeyoshi WATABE ,  Toshiki SASAKI ,  Satoshi SEO

    IPC: H01L51/50 ,  H01L27/32 ,  H01L51/52

    CPC classification number: H01L51/5265 ,  C07F15/0033 ,  C09K11/06 ,  H01L27/323 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5016 ,  H01L2251/5384

    Abstract: A light-emitting element that emits light with high color purity, a light-emitting element that emits light at high emission efficiency, or a light-emitting element with reduced power consumption. The light-emitting element includes a first electrode, a second electrode, and an EL layer. The first electrode is configured to reflect light. The second electrode is configured to reflect light and transmit light. The EL layer is between the first electrode and the second electrode. The EL layer includes a guest material. The guest material is configured to convert triplet excitation energy into light emission. The emission spectrum of the guest material in a dichloromethane solution has a peak in a wavelength region ranging from 440 nm to 470 nm and has a full width at half maximum of greater than or equal to 20 nm and less than or equal to 80 nm.

    Abstract translation: 以高纯度发出光的发光元件，以高发光效率发光的发光元件或功耗降低的发光元件。 发光元件包括第一电极，第二电极和EL层。 第一电极被配置为反射光。 第二电极被配置为反射光并透射光。 EL层位于第一电极和第二电极之间。 EL层包括客体材料。 客体材料被配置为将三重态激发能转换成发光。 客体材料在二氯甲烷溶液中的发射光谱在440nm至470nm的波长范围内具有峰值，并具有大于或等于20nm且小于或等于80nm的半峰全宽。

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