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    QUANTUM DOT DEVICE AND ELECTRONIC DEVICE
    41.
    发明申请
    QUANTUM DOT DEVICE AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20190319208A1

    公开(公告)日：2019-10-17

    申请号：US16104967

    申请日：2018-08-20

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Moon Gyu HAN ,  Dae Young CHUNG ,  Hongkyu SEO ,  Kwanghee KIM ,  Kun Su PARK ,  Sujin PARK ,  Eun Joo JANG

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

    Abstract: A quantum dot device includes a first electrode and a second electrode facing each other, a quantum dot layer disposed between the first electrode and the second electrode and comprising a plurality of quantum dots, a first charge auxiliary layer disposed between the first electrode and the quantum dot layer and contacting the quantum dot layer, and a second charge auxiliary layer disposed between the second electrode and the quantum dot layer and contacting the quantum dot layer, wherein the plurality of quantum dots includes a quantum dot including an organic ligand on a surface thereof, the organic ligand including a hydrophilic functional group at a terminal end.

    ELECTROLUMINESCENT DISPLAY DEVICE
    42.
    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%.

    QUANTUM DOT DEVICE AND ELECTRONIC DEVICE
    43.
    发明申请
    QUANTUM DOT DEVICE AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20190280230A1

    公开(公告)日：2019-09-12

    申请号：US16296505

    申请日：2019-03-08

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Hongkyu SEO ,  Eun Joo JANG ,  Moon Gyu HAN ,  Tae Ho KIM ,  Dae Young CHUNG

    IPC: H01L51/50 ,  H01L51/56 ,  C09K11/88

    Abstract: A quantum dot device including an anode; a cathode disposed substantially opposite to the anode; a hole injection layer disposed on the anode between the anode and the cathode; a hole transport layer disposed on the hole injection layer between the hole injection layer and the cathode; and a quantum dot layer disposed on the hole transport layer between the hole transport layer and the cathode, wherein the quantum dot layer includes a plurality of quantum dots, wherein the hole transport layer includes a hole transport material and an electron transport material, and wherein a lowest unoccupied molecular orbital (LUMO) energy level of the electron transport material and a lowest unoccupied molecular orbital (LUMO) energy level of the quantum dot layer is about 0.5 electron volts or less.

    LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
    45.
    发明公开
    LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME 审中-公开

    公开(公告)号：US20230276643A1

    公开(公告)日：2023-08-31

    申请号：US18300665

    申请日：2023-04-14

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Heejae LEE ,  Sung Woo KIM ,  Eun Joo JANG ,  Dae Young CHUNG ,  Moon Gyu HAN

    IPC: H10K50/115 ,  H10K50/15 ,  H10K50/17

    CPC classification number: H10K50/115 ,  H10K50/15 ,  H10K50/171

    Abstract: A light emitting device includes: a first electrode and a second electrode with a surface facing the first electrode; an emission layer disposed between the first electrode and the second electrode and including a quantum dot (e.g., a plurality of quantum dots); and an electron auxiliary layer disposed between the emission layer and the second electrode. The electron auxiliary layer includes a first layer including a first metal oxide, and a second layer disposed on the first layer and including a second metal oxide. A roughness of an interface between the second layer and the second electrode is less than about 10 nm as determined by an electron microscopy analysis. An absolute value of a difference between a conduction band edge energy level of the second layer and a work function of the second electrode may be less than or equal to about 0.5 eV, and a conduction band edge energy level of the first layer may be less than the conduction band edge energy level of the second layer.

    ELECTROLUMINESCENT DEVICE, AND DISPLAY DEVICE COMPRISING THEREOF
    46.
    发明申请
    ELECTROLUMINESCENT DEVICE, AND DISPLAY DEVICE COMPRISING THEREOF 有权

    公开(公告)号：US20230121473A1

    公开(公告)日：2023-04-20

    申请号：US18083782

    申请日：2022-12-19

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Dae Young CHUNG ,  Hwea Yoon KIM ,  Yeonkyung LEE ,  Eun Joo JANG

    IPC: H10K50/115 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17

    Abstract: An electroluminescent device and a display device including the same. The electroluminescent device includes a first electrode and a second electrode facing each other; a light emitting layer disposed between the first electrode and the second electrode, the light emitting layer including a quantum dot; a hole transport layer disposed between the light emitting layer and the first electrode; and an electron transport layer disposed between the light emitting layer and the second electrode, wherein the hole transport layer, the light emitting layer, or a combination thereof includes thermally activated delayed fluorescence material, and the thermally activated delayed fluorescence material is present in an amount of greater than or equal to about 0.01 wt % and less than about 10 weight percent (wt %), based on 100 wt % of the hole transport layer, the light emitting layer, or the combination thereof including the thermally activated delayed fluorescence material.

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