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    LIGHT EMITTING ELEMENT, DISPLAY DEVICE, AND METHOD FOR PRODUCING LIGHT-EMITTING ELEMENT
    42.
    发明公开
    LIGHT EMITTING ELEMENT, DISPLAY DEVICE, AND METHOD FOR PRODUCING LIGHT-EMITTING ELEMENT 审中-公开

    公开(公告)号：US20240090250A1

    公开(公告)日：2024-03-14

    申请号：US17767652

    申请日：2020-08-26

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： YOSHIHIRO UETA

    IPC: H10K50/115

    CPC classification number: H10K50/115

    Abstract: Provided is a technique for improving a luminous efficiency of a light-emitting element including quantum dots in a light-emitting layer by improving a balance between electrons and positive holes in the quantum dot layer. A light-emitting element according to the disclosure includes an anode, a cathode, and a quantum dot layer provided between the anode and the cathode and including a plurality of quantum dots and a vacancy, the vacancy being a region between the plurality of quantum dots. The quantum dot layer includes both the plurality of quantum dots and the vacancy in the quantum dot layer in an entire region of the quantum dot layer in each of all cross sections having a normal line in a direction from the cathode toward the anode.

    DISPLAY DEVICE
    43.
    发明公开
    DISPLAY DEVICE 审中-公开

    公开(公告)号：US20240069399A1

    公开(公告)日：2024-02-29

    申请号：US18272490

    申请日：2021-01-22

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： TAZUKO KITAZAWA ,  YOSHIHIRO UETA ,  EIJI SATOH ,  Zenken KIN

    IPC: G02F1/1368 ,  G02F1/1335 ,  G02F1/167

    CPC classification number: G02F1/1368 ,  G02F1/133528 ,  G02F1/167

    Abstract: A display device includes: a TFT substrate including a thin film transistor; a light-emitting element including a first electrode and a second electrode overlapping each other in a plan view, and a light-emitting layer placed between the first electrode and the second electrode; a third electrode capable of forming an electrical field between the second electrode and the third electrode; an optical adjustment element overlapping the light-emitting layer in a plan view and having an optical characteristic that changes in accordance with a potential difference between the second electrode and the third electrode; and light scattering bodies included in at least one of the TFT substrate, the light-emitting element, and the optical adjustment element.

    LIGHT-EMITTING ELEMENT
    44.
    发明公开
    LIGHT-EMITTING ELEMENT 审中-公开

    公开(公告)号：US20240008299A1

    公开(公告)日：2024-01-04

    申请号：US18037749

    申请日：2020-12-25

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： YOSHIHIRO UETA

    IPC: H10K50/115

    CPC classification number: H10K50/115 ,  H10K59/1201

    Abstract: A light-emitting element includes: a first electrode; a second electrode; and a quantum dot layer disposed between the first electrode and the second electrode. The quantum dot layer includes: a first quantum dot that is either an intrinsic quantum dot or an impurity quantum dot; and a second quantum dot disposed between the second electrode and the first quantum dot. The second quantum dot is either the intrinsic quantum dot or the impurity quantum dot other than the first quantum dot.

    DISPLAY DEVICE
    47.
    发明申请
    DISPLAY DEVICE 有权

    公开(公告)号：US20230006000A1

    公开(公告)日：2023-01-05

    申请号：US17781335

    申请日：2019-12-12

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： HIROYUKI FURUKAWA ,  MASAFUMI UENO ,  Chie TORIDONO ,  YOSHIHIRO UETA

    IPC: H01L27/32 ,  H01L51/50 ,  G09G3/3291 ,  G09G3/36

    Abstract: A display device includes: a first subpixel including a quantum dot light-emitting layer configured to emit light of a first color: a second subpixel including a quantum dot light-emitting layer configured to emit light of a second color different from the light of the first color: a third subpixel including a quantum dot light-emitting layer configured to emit light of a third color different from the light of the first color and the light of the second color: and a data processing circuit configured to receive a first input data corresponding to the first subpixel, a second input data corresponding to the second subpixel, and a third input data corresponding to the third subpixel. The data processing circuit generates first output data corresponding to a first data voltage supplied to the first subpixel by using the first input data, the second input data, and the third input data.

    ELECTROLUMINESCENT ELEMENT AND ELECTROLUMINESCENT DEVICE
    48.
    发明申请
    ELECTROLUMINESCENT ELEMENT AND ELECTROLUMINESCENT DEVICE 有权

    公开(公告)号：US20220393130A1

    公开(公告)日：2022-12-08

    申请号：US17642794

    申请日：2019-09-26

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： NOBORU IWATA ,  HISAYUKI UTSUMI ,  YOSHIHIRO UETA

    IPC: H01L51/50

    Abstract: An electroluminescent element including an anode, a cathode, and a light-emitting layer provided between the anode and the cathode, in which the electroluminescent element further includes an electron transport layer including n-type semiconductor particles and a first insulating polymer, and a hole transport layer including p-type semiconductor particles, the electron transport layer is provided between the cathode and the light-emitting layer, the hole transport layer is provided between the anode and the light-emitting layer, and a volume proportion of the n-type semiconductor particles in the electron transport layer is smaller than a volume proportion of the p-type semiconductor particles in the hole transport layer.

    LIGHT-EMITTING DEVICE
    49.
    发明申请
    LIGHT-EMITTING DEVICE 有权

    公开(公告)号：US20220367825A1

    公开(公告)日：2022-11-17

    申请号：US17761494

    申请日：2019-09-27

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： YUSUKE SAKAKIBARA ,  Masaki YAMAMOTO ,  YOSHIHIRO UETA

    IPC: H01L51/50

    Abstract: A light-emitting device includes a first sub-pixel provided with a first light emitter, and a second sub-pixel provided with a second light emitter and constituting, together with the first sub-pixel, one of a plurality of pixels. The first light emitter has a first cathode, a first anode, and a first light-emitting layer containing a first quantum dot and disposed between the first cathode and the first anode. The second light emitter has a second cathode, a second anode, and a second light-emitting layer containing a second quantum dot and disposed between the second cathode and the second anode. The second quantum dot emits light having a longer light-emission wavelength than the first quantum dot. The first light-emitting layer is thicker than the second light-emitting layer.

    LIGHT EMITTING DEVICE AND METHOD FOR MANUFACTURING LIGHT EMITTING DEVICE
    50.
    发明申请
    LIGHT EMITTING DEVICE AND METHOD FOR MANUFACTURING LIGHT EMITTING DEVICE 有权

    公开(公告)号：US20220328779A1

    公开(公告)日：2022-10-13

    申请号：US17641677

    申请日：2019-09-19

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： EIJI SATOH ,  YOSHIHIRO UETA

    IPC: H01L51/50 ,  H01L51/56

    Abstract: A light-emitting device includes a light-emitting layer containing: quantum dots serving as light emitters; and dummy flakes not involved in emitting light. The quantum dots are localized. Thanks to such features, light generated from the quantum dots is diffracted in the light-emitting layer, directed in a normal direction that is a thickness direction of an array substrate, and emitted out of the light-emitting device.

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