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    QUANTUM DOTS, AND AN ELECTRONIC DEVICE INCLUDING THE SAME
    23.
    发明申请
    QUANTUM DOTS, AND AN ELECTRONIC DEVICE INCLUDING THE SAME 有权

    公开(公告)号：US20230094022A1

    公开(公告)日：2023-03-30

    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 ,  H01L51/50

    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).

    LUMINESCENT FILM AND DEVICE INCLUDING THE SAME
    25.
    发明申请
    LUMINESCENT FILM AND DEVICE INCLUDING THE SAME 有权

    公开(公告)号：US20220209152A1

    公开(公告)日：2022-06-30

    申请号：US17563143

    申请日：2021-12-28

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Yong Seok HAN ,  Eun Joo JANG ,  Hyo Sook JANG ,  Oul CHO ,  Jihyun MIN ,  Yuho WON

    IPC: H01L51/50 ,  C09K11/88 ,  C09K11/70

    Abstract: A light-emitting device including a first electrically conducting layer, a second electrically conducting layer, and a light-emitting layer disposed between the first electrically conducting layer and the second electrically conducting layer, the light emitting layer including light emitting nanostructures, wherein the light emitting layer is configured to emit green light, the light-emitting layer do not include cadmium, lead, or a combination thereof, the light emitting nanostructures include a first semiconductor nanocrystal including a Group III-V compound and a second semiconductor nanocrystal including a zinc chalcogenide, the Group III-V compound includes indium, phosphorus, and optionally zinc, the zinc chalcogenide includes zinc, selenium, and sulfur, the light emitting nanostructures exhibit a zinc blende structure, and in a two dimensional image of the light emitting nanostructures obtained by an electron microscopy analysis, an average value of squareness of the light emitting nanostructures is greater than or equal to about 0.8.

    LIGHT-EMITTING DEVICE AND PRODUCTION METHOD THEREOF
    27.
    发明申请
    LIGHT-EMITTING DEVICE AND PRODUCTION METHOD THEREOF 有权

    公开(公告)号：US20210184147A1

    公开(公告)日：2021-06-17

    申请号：US17123292

    申请日：2020-12-16

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Jaejun CHANG ,  Kwanghee KIM ,  Won Sik YOON ,  Eun Joo JANG ,  Oul CHO

    IPC: H01L51/50

    Abstract: A light-emitting device including a first electrode, a second electrode, and a light-emitting film disposed between the first electrode and the second electrode, and a method of producing the device. The light-emitting film includes a fluorine-containing organic salt, and quantum dots that do not include cadmium, lead, or a combination thereof, and the fluorine-containing organic salt includes a substituted or unsubstituted C1 to C30 hydrocarbon group, a non-metallic element, fluorine, and at least one of boron or phosphorus, and the non-metallic element includes carbon, nitrogen, oxygen, phosphorus, sulfur, or selenium.

    QUANTUM DOTS, AND AN ELECTRONIC DEVICE INCLUDING THE SAME
    28.
    发明申请
    QUANTUM DOTS, AND AN ELECTRONIC DEVICE INCLUDING THE SAME 有权

    公开(公告)号：US20210102119A1

    公开(公告)日：2021-04-08

    申请号：US17036122

    申请日：2020-09-29

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Tae Hyung KIM ,  Yuho WON ,  Eun Joo JANG ,  Heejae CHUNG ,  Oul CHO

    IPC: C09K11/88 ,  C09K11/08 ,  H01L51/50

    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 DEVICE, AND DISPLAY DEVICE COMPRISING THEREOF
    29.
    发明申请
    ELECTROLUMINESCENT DEVICE, AND DISPLAY DEVICE COMPRISING THEREOF 审中-公开

    公开(公告)号：US20190326539A1

    公开(公告)日：2019-10-24

    申请号：US16356148

    申请日：2019-03-18

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Dae Young CHUNG ,  Moon Gyu HAN ,  Oul CHO ,  Tae Hyung KIM ,  Sujin PARK ,  Hongkyu SEO ,  Eun Joo JANG

    IPC: H01L51/50 ,  H01L27/32 ,  H01L51/00 ,  H01L51/56

    Abstract: An electroluminescent device including a first electrode, a hole transport layer disposed on the first electrode, a first emission layer disposed on the hole transport layer, the first emission layer including a first light emitting particle on which a first ligand having a hole transporting property is attached, a second emission layer disposed on the first emission layer, the second emission layer including a second light emitting particle on which a second ligand having an electron transporting property is attached, an electron transport layer disposed on the second emission layer, and a second electrode disposed on the electron transport layer, wherein a solubility of the first ligand in a solvent is different than a solubility of the second ligand in the solvent and a display device including the same.

    ELECTROLUMINESCENT DISPLAY DEVICE
    30.
    发明申请
    ELECTROLUMINESCENT DISPLAY DEVICE 审中-公开

    公开(公告)号：US20190280231A1

    公开(公告)日：2019-09-12

    申请号：US16297833

    申请日：2019-03-11

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Tae Hyung KIM ,  Eun Joo JANG ,  Dae Young CHUNG ,  Yong Wook KIM ,  Yuho WON ,  Oul CHO

    IPC: H01L51/50 ,  C09K11/88 ,  H01L51/00

    Abstract: An electroluminescence display device, including a first electrode and a second electrode facing each other; a quantum dot emission layer disposed between the first electrode and the second electrode, the quantum dot emission layer including a plurality of quantum dots and not including cadmium, 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 device has color reproducibility according to a DCI standard of greater than or equal to about 89%.

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