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    Quantum dot device and quantum dots
    34.
    发明授权
    Quantum dot device and quantum dots 有权

    公开(公告)号：US12041802B2

    公开(公告)日：2024-07-16

    申请号：US18101603

    申请日：2023-01-26

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Jin A Kim ,  Yuho Won ,  Sung Woo Kim ,  Tae Hyung Kim ,  Jeong Hee Lee ,  Eun Joo Jang

    IPC: H10K50/115

    CPC classification number: H10K50/115

    Abstract: Quantum dots and electroluminescent devices including the same, wherein the quantum dots include a core including a first semiconductor nanocrystal including a zinc chalcogenide; and a shell disposed on the core, the shell including zinc, sulfur, and selenium, wherein the quantum dots have an average particle size of greater than 10 nm, wherein the quantum dots do not include cadmium, and wherein a photoluminescent peak of the quantum dots is present in a wavelength range of greater than or equal to about 430 nm and less than or equal to about 470 nm.

    Quantum dots, and an electronic device including the same
    36.
    发明授权
    Quantum dots, and an electronic device including the same 有权

    公开(公告)号：US11981850B2

    公开(公告)日：2024-05-14

    申请号：US17991903

    申请日：2022-11-22

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Tae Hyung Kim ,  Yuho Won ,  Eun Joo Jang ,  Heejae Chung ,  Oul Cho

    IPC: C09K11/88 ,  C09K11/08 ,  H10K50/115 ,  B82Y20/00 ,  B82Y40/00

    CPC classification number: C09K11/883 ,  C09K11/0883 ,  H10K50/115 ,  B82Y20/00 ,  B82Y40/00

    Abstract: A quantum dot including a core including a first semiconductor nanocrystal including a Group III-V compound, and a shell disposed on the core and including a semiconductor nanocrystal including a Group II-VI compound, wherein the quantum dots do not include cadmium, the shell includes a first layer disposed directly on the core and including a second semiconductor nanocrystal including zinc and selenium, a second layer, the second layer being an outermost layer of the shell and including a third semiconductor nanocrystal including zinc and sulfur, and a third layer disposed between the first layer and the second layer and including a fourth semiconductor nanocrystal including zinc, selenium, and optionally sulfur, and a difference between a peak emission wavelength of a colloidal solution of the quantum dot and a peak emission wavelength of a film prepared from the colloidal solution is less than or equal to about 5 nanometers (nm).

    ELECTROLUMINESCENT DISPLAY DEVICE
    38.
    发明申请
    ELECTROLUMINESCENT DISPLAY DEVICE 有权

    公开(公告)号：US20220302402A1

    公开(公告)日：2022-09-22

    申请号：US17696956

    申请日：2022-03-17

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Sanghyun Sohn ,  Eun Joo Jang ,  Tae Hyung Kim ,  Hyo Sook Jang

    IPC: H01L51/50

    Abstract: An electroluminescent display device includes first and second electrode facing each other; and a quantum dot emission layer disposed between the first and second electrodes, wherein the quantum dot emission layer includes a red emission layer disposed in a red pixel, a green emission layer disposed in a green pixel, and a blue emission layer disposed in a blue pixel, wherein the red emission layer includes red light emitting quantum dots, the green emission layer includes green light emitting quantum dots, the blue emission layer includes blue light emitting quantum dots, and wherein the blue emission layer is configured to exhibit first emission spectrum including a blue luminescent peak and a first luminescent peak different from the blue luminescent peak, wherein the green emission layer is configured to exhibit a second emission spectrum including a green luminescent peak and a second luminescent peak different from the green luminescent peak.

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