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    Electronic device including quantum dots
    231.
    发明授权
    Electronic device including quantum dots 有权

    公开(公告)号：US11060026B2

    公开(公告)日：2021-07-13

    申请号：US17083470

    申请日：2020-10-29

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Yuho Won ,  Ha Il Kwon ,  Eun Joo Jang ,  Jaejun Chang ,  Dae Young Chung

    IPC: H01L51/50 ,  C09K11/88 ,  C09K11/08 ,  B82Y20/00 ,  H01L51/00 ,  B82Y40/00

    Abstract: An electroluminescent device includes a first electrode and a second electrode facing each other, and an emissive layer disposed between the first electrode and the second electrode and including the quantum dots. The quantum dots include a semiconductor nanocrystal core including indium (In) and phosphorous (P), a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell including zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell, the second semiconductor nanocrystal shell including zinc and sulfur, wherein the quantum dots do not include cadmium. The electroluminescent device has an external quantum efficiency of greater than or equal to about 9% and a maximum brightness of greater than or equal to about 10,000 candelas per square meter (cd/m2).

    Quantum dot device and electronic device
    234.
    发明授权
    Quantum dot device and electronic device 有权

    公开(公告)号：US10991899B2

    公开(公告)日：2021-04-27

    申请号：US16561474

    申请日：2019-09-05

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Sung Woo Kim ,  Kun Su Park ,  Dae Young Chung ,  Eun Joo Jang

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

    Abstract: A quantum dot device including an anode and a cathode facing each other; a quantum dot layer between the anode and the cathode; a hole transport layer between the anode and the quantum dot layer, the hole transport layer being configured to increase a hole transporting property from the anode to the quantum dot layer; an inorganic electron transport layer between the cathode and the quantum dot layer, the inorganic electron transport layer being configured to increase an electron transporting property from the cathode to the quantum dot layer; and an inorganic electron controlling layer between the cathode and the quantum dot layer, the inorganic electron controlling layer being configured to decrease an electron transporting property from the cathode to the quantum dot layer, and an electronic device including the same.

    Device with quantum dot emissive layer and display device comprising the same
    237.
    发明授权
    Device with quantum dot emissive layer and display device comprising the same 有权

    公开(公告)号：US10978660B2

    公开(公告)日：2021-04-13

    申请号：US16797380

    申请日：2020-02-21

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Dae Young Chung ,  Eun Joo Jang ,  Oul Cho ,  Hyun A Kang ,  Tae Hyung Kim ,  Yun Sung Woo ,  Jeong Hee Lee

    IPC: H01L51/50 ,  H01L51/52

    Abstract: An electronic device includes a first electrode and a second electrode facing each other, an emission layer comprising a plurality of quantum dots, wherein the emission layer is disposed between the first electrode and the second electrode; a first charge auxiliary layer disposed between the first electrode and the emission layer; and an optical functional layer disposed on the second electrode on a side opposite the emission layer, wherein the first electrode includes a reflecting electrode, wherein the second electrode is a light-transmitting electrode, wherein a region between the optical functional layer and the first electrode comprises a microcavity structure, and a refractive index of the optical functional layer is greater than or equal to a refractive index of the second electrode.

    Semiconductor nanocrystal particles and devices including the same
    238.
    发明授权
    Semiconductor nanocrystal particles and devices including the same 有权

    公开(公告)号：US10975299B2

    公开(公告)日：2021-04-13

    申请号：US16103182

    申请日：2018-08-14

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Tae Hyung Kim ,  Hyun A Kang ,  Eun Joo Jang ,  Dae Young Chung

    IPC: H01L51/50 ,  C09K11/70 ,  B82Y20/00 ,  B82Y40/00

    Abstract: Disclosed are a semiconductor nanocrystal particle including indium (In), zinc (Zn), and phosphorus (P), wherein a mole ratio of the zinc relative to the indium is greater than or equal to about 25:1, and the semiconductor nanocrystal particle includes a core including a first semiconductor material including indium, zinc, and phosphorus and a shell disposed on the core and including a second semiconductor material including zinc and sulfur, a method of producing the same, and an electronic device including the same. The semiconductor nanocrystal particle emits blue light having a maximum peak emission at a wavelength of less than or equal to about 470 nanometers.

    LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
    239.
    发明申请
    LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME 有权

    公开(公告)号：US20210066634A1

    公开(公告)日：2021-03-04

    申请号：US17007021

    申请日：2020-08-31

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Kun Su Park ,  Chan Su Kim ,  Kwanghee Kim ,  Eun Joo Jang

    IPC: H01L51/50

    Abstract: A light emitting device includes an emission layer including a plurality of quantum dots, and an electron auxiliary layer disposed on the emission layer, the electron auxiliary layer to transport electrons to the emission layer, wherein the electron auxiliary layer includes a plurality of metal oxide nanoparticles, wherein the metal oxide nanoparticles include zinc and a dopant metal, wherein the dopant metal includes Mg, Mn, Ni, Sn, Al, Y, Ga, Zr, Ni, Li, Co, or a combination thereof, wherein the dopant metal in at least one of the metal oxide nanoparticles is included in the meal oxide nanoparticle to have a concentration gradient of the dopant metal.

    Electroluminescent device, and display device comprising thereof
    240.
    发明授权
    Electroluminescent device, and display device comprising thereof 有权

    公开(公告)号：US10818859B2

    公开(公告)日：2020-10-27

    申请号：US16233567

    申请日：2018-12-27

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Kun Su Park ,  Kwanghee Kim ,  Tae Ho Kim ,  Eun Joo Jang ,  Won Sik Yoon

    IPC: H01L51/50 ,  H01L51/00

    Abstract: An electroluminescent device, a method of manufacturing the same, and a display device including the same.The electroluminescent device includes a first electrode, a hole transport layer disposed on the first electrode, an emission layer disposed on the hole transport layer and including light emitting particles, an electron transport layer disposed on the emission layer and including nanoparticles having electron transport capability, and a second electrode disposed on the electron transport layer, wherein at least a portion of the nanoparticles having electron transport capability include an inorganic oxide core represented by Chemical Formula 1, an organic ligand attached to a surface of the inorganic oxide core, and a metal-organic compound chemically bound to the surface of the inorganic oxide core. MxOy  Chemical Formula 1

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