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    Light-emitting device with reflective electrode and light-emitting layer
    1.
    发明授权
    Light-emitting device with reflective electrode and light-emitting layer 有权

    公开(公告)号：US11917840B2

    公开(公告)日：2024-02-27

    申请号：US17055933

    申请日：2019-05-10

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Satoshi Seo ,  Toshiki Sasaki ,  Ryohei Yamaoka ,  Shiho Nomura

    IPC: H10K50/11 ,  H10K50/818 ,  H10K50/828

    CPC classification number: H10K50/11 ,  H10K50/818 ,  H10K50/828

    Abstract: A novel light-emitting device with high emission efficiency is provided. A light-emitting device with a high blue index (BI) is provided. A light-emitting device with low power consumption is provided. A light-emitting device including a first electrode and a second electrode which are a reflective electrode and a semi-transmissive and semi-reflective electrode, and an EL layer sandwiched between the first electrode and the second electrode, where the EL layer contains an emission center substance, where when the emission center substance in the EL layer includes only one kind of substance, photon energy of a peak wavelength of light emitted from the light-emitting device is designed from an average value of photon energy of light emitted by the emission center substance in a solution state and emission edge energy on a short wavelength side of an emission spectrum of the emission center substance in the solution state.

    Light-emitting device and electronic device
    5.
    发明授权
    Light-emitting device and electronic device 有权

    公开(公告)号：US11387280B2

    公开(公告)日：2022-07-12

    申请号：US16797167

    申请日：2020-02-21

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Satoshi Seo ,  Toshiki Sasaki ,  Ryohei Yamaoka

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

    Abstract: Provided is a light-emitting device that can display an image with a wide color gamut or a novel light-emitting element. The light-emitting device includes a plurality of light-emitting elements each of which includes an EL layer between a pair of electrodes. Light obtained from a first light-emitting element through a first color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than 0.680 and less than or equal to 0.720 and a chromaticity y of greater than or equal to 0.260 and less than or equal to 0.320. Light obtained from a second light-emitting element through a second color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than or equal to 0.130 and less than or equal to 0.250 and a chromaticity y of greater than 0.710 and less than or equal to 0.810. Light obtained from a third light-emitting element through a third color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than or equal to 0.120 and less than or equal to 0.170 and a chromaticity y of greater than or equal to 0.020 and less than 0.060.

    Light-Emitting Device and Electronic Device
    6.
    发明申请
    Light-Emitting Device and Electronic Device 审中-公开

    公开(公告)号：US20200258948A1

    公开(公告)日：2020-08-13

    申请号：US16797167

    申请日：2020-02-21

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Satoshi Seo ,  Toshiki Sasaki ,  Ryohei Yamaoka

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

    Abstract: Provided is a light-emitting device that can display an image with a wide color gamut or a novel light-emitting element. The light-emitting device includes a plurality of light-emitting elements each of which includes an EL layer between a pair of electrodes. Light obtained from a first light-emitting element through a first color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than 0.680 and less than or equal to 0.720 and a chromaticity y of greater than or equal to 0.260 and less than or equal to 0.320. Light obtained from a second light-emitting element through a second color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than or equal to 0.130 and less than or equal to 0.250 and a chromaticity y of greater than 0.710 and less than or equal to 0.810. Light obtained from a third light-emitting element through a third color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than or equal to 0.120 and less than or equal to 0.170 and a chromaticity y of greater than or equal to 0.020 and less than 0.060.

    Display device, display module, and electronic device
    7.
    发明授权
    Display device, display module, and electronic device 有权

    公开(公告)号：US10529780B2

    公开(公告)日：2020-01-07

    申请号：US15899620

    申请日：2018-02-20

    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 and electronic device
    8.
    发明授权
    Light-emitting device and electronic device 有权

    公开(公告)号：US10199436B2

    公开(公告)日：2019-02-05

    申请号：US15900021

    申请日：2018-02-20

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Satoshi Seo ,  Toshiki Sasaki ,  Ryohei Yamaoka

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

    Abstract: Provided is a light-emitting device that can display an image with a wide color gamut or a novel light-emitting element. The light-emitting device includes a plurality of light-emitting elements each of which includes an EL layer between a pair of electrodes. Light obtained from a first light-emitting element through a first color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than 0.680 and less than or equal to 0.720 and a chromaticity y of greater than or equal to 0.260 and less than or equal to 0.320. Light obtained from a second light-emitting element through a second color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than or equal to 0.130 and less than or equal to 0.250 and a chromaticity y of greater than 0.710 and less than or equal to 0.810. Light obtained from a third light-emitting element through a third color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than or equal to 0.120 and less than or equal to 0.170 and a chromaticity y of greater than or equal to 0.020 and less than 0.060.

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