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    ELECTROLUMINESCENT DEVICE AND SEMICONDUCTOR NANOPARTICLE
    2.
    发明申请
    ELECTROLUMINESCENT DEVICE AND SEMICONDUCTOR NANOPARTICLE 有权

    公开(公告)号：US20230096181A1

    公开(公告)日：2023-03-30

    申请号：US17953533

    申请日：2022-09-27

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Yuho WON ,  Jeong Hee LEE ,  Eun Joo JANG ,  Hyo Sook JANG ,  Seonmyeong CHOI

    IPC: C09K11/88 ,  H01L51/50 ,  B82Y30/00 ,  C09K11/55

    Abstract: An electroluminescent device includes a first electrode and a second electrode spaced apart from each other, and a light emitting layer including semiconductor nanoparticles. The semiconductor nanoparticles do not contain cadmium, the semiconductor nanoparticles include zinc, selenium, tellurium, and sulfur, the semiconductor nanoparticles have a core-shell structure including a core including a first semiconductor nanocrystal and a shell disposed on the core, the first semiconductor nanocrystals include a first zinc chalcogenide containing sulfur, in the semiconductor nanoparticles, a mole ratio of sulfur to tellurium is greater than or equal to about 0.5:1 and less than or equal to about 110:1, and the semiconductor nanoparticles are configured to emit light having a maximum emission peak wavelength of greater than or equal to about 440 nanometers (nm) and less than or equal to about 580 nm, and the semiconductor nanoparticles have a quantum yield of greater than or equal to about 40%.

    INKJET PRINTHEAD
    4.
    发明申请
    INKJET PRINTHEAD 有权

    公开(公告)号：US20220288930A1

    公开(公告)日：2022-09-15

    申请号：US17394698

    申请日：2021-08-05

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Tae Ho KIM ,  Eun Joo JANG ,  Tae Hyung KIM ,  Hyo Sook JANG ,  You Jung CHUNG

    IPC: B41J2/14 ,  H01L21/56 ,  B41J2/11 ,  B41J2/045

    Abstract: An inkjet printhead includes a head body in which a first fine channel that is connected to an ink inlet and thus guides an inflow of ink, a second fine channel that is disposed below the first fine channel, communicated with the first fine channel through a connection via hole, and guides an outflow of the ink by being connected to an ink outlet, and a nozzle that is opened downward from the second fine channel are defined, and a micro heater that is disposed closer to the connection via hole in an upper portion of the first fine channel than to an end of the first fine channel where the first fine channel is connected to the ink inlet or an end of the second fine channel where the second fine channel is connected to the ink outlet.

    LUMINESCENT FILM AND DEVICE INCLUDING THE SAME
    5.
    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.

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