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    LIGHT-EMITTING ELEMENT
    44.
    发明申请
    LIGHT-EMITTING ELEMENT 有权

    公开(公告)号：US20210050545A1

    公开(公告)日：2021-02-18

    申请号：US16944257

    申请日：2020-07-31

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Satoshi SEO ,  Hiromi SEO ,  Tatsuyoshi TAKAHASHI

    IPC: H01L51/50 ,  H01L51/00 ,  C09K11/02 ,  C09K11/06

    Abstract: To provide a light-emitting element which uses a fluorescent material as a light-emitting substance and has higher luminous efficiency. To provide a light-emitting element which includes a mixture of a thermally activated delayed fluorescent substance and a fluorescent material. By making the emission spectrum of the thermally activated delayed fluorescent substance overlap with an absorption band on the longest wavelength side in absorption by the fluorescent material in an S1 level of the fluorescent material, energy at an S1 level of the thermally activated delayed fluorescent substance can be transferred to the S1 of the fluorescent material. Alternatively, it is also possible that the S1 of the thermally activated delayed fluorescent substance is generated from part of the energy of a T1 level of the thermally activated delayed fluorescent substance, and is transferred to the S1 of the fluorescent material.

    Physical Property Prediction Method and Physical Property Prediction System
    46.
    发明申请
    Physical Property Prediction Method and Physical Property Prediction System 审中-公开

    公开(公告)号：US20200349451A1

    公开(公告)日：2020-11-05

    申请号：US16643094

    申请日：2018-08-24

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Kunihiko Suzuki ,  Satoshi SEO ,  Harue OSAKA ,  Yoshitaka DOZEN

    IPC: G06N3/12 ,  G06N20/00 ,  G16C20/70 ,  G16C20/30

    Abstract: A physical property prediction method that allows anyone to predict a physical property of an organic compound easily and accurately is provided. A physical property prediction system that allows anyone to predict a physical property of an organic compound easily and accurately is provided. Provided are a physical property prediction method including the step of learning a correlation between a molecular structure and a physical property of an organic compound and the step of predicting the target physical property value from the molecular structure of an object substance, and a physical property prediction system. A plurality of kinds of fingerprinting methods are used at the same time as notation methods of the molecular structure of the organic compound.

    DISPLAY DEVICE, DISPLAY MODULE, AND ELECTRONIC DEVICE
    47.
    发明申请
    DISPLAY DEVICE, DISPLAY MODULE, AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20200075686A1

    公开(公告)日：2020-03-05

    申请号：US16676567

    申请日：2019-11-07

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Ryohei YAMAOKA ,  Satoshi SEO ,  Daiki NAKAMURA

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

    Abstract: A display device with a wide viewing angle is provided. A display device capable of displaying an image with a wide color gamut is provided. A display device includes a first light-emitting element, a second light-emitting element, and a third light-emitting element. The light-emitting elements each include a pair of electrodes and a light-emitting layer. One of the pair of electrodes includes a reflective electrode, and the other of the pair of electrodes includes a transflective electrode. The light-emitting layers of the light-emitting elements are different from each other. A first peak wavelength of the emission spectrum of the first light-emitting element is greater than or equal to 400 nm and less than or equal to 480 nm. A second peak wavelength of the emission spectrum of the second light-emitting element is greater than or equal to 580 nm and less than or equal to 700 nm. A third peak wavelength of the emission spectrum of the third light-emitting element is between the first peak wavelength and the second peak wavelength. The distance between the pair of electrodes of the first light-emitting element is longest and that of the second light-emitting element is second longest.

    LIGHT-EMITTING DEVICE, DISPLAY DEVICE, AND ELECTRONIC DEVICE WITH COLOR CONVERSION LAYERS.
    49.
    发明申请
    LIGHT-EMITTING DEVICE, DISPLAY DEVICE, AND ELECTRONIC DEVICE WITH COLOR CONVERSION LAYERS. 审中-公开

    公开(公告)号：US20200006688A1

    公开(公告)日：2020-01-02

    申请号：US16558387

    申请日：2019-09-03

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Satoshi SEO ,  Nobuharu OHSAWA

    IPC: H01L51/50

    Abstract: A light-emitting device, an electronic device, and a display device each consume less power are provided. The light-emitting device includes a first light-emitting element, a second light-emitting element, and a third light-emitting element that share an EL layer. The EL layer includes a layer containing a light-emitting material that emits blue fluorescence and a layer containing a light-emitting material that emits yellow or green phosphorescence. Light emitted from the second light-emitting element enters a color filter layer or a second color conversion layer, and light emitted from the third light-emitting element enters a first color conversion layer.

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