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    LIGHT EMITTING ELEMENT AND DISPLAY PANEL INCLUDING THE SAME
    1.
    发明申请
    LIGHT EMITTING ELEMENT AND DISPLAY PANEL INCLUDING THE SAME 有权

    公开(公告)号：US20250072203A1

    公开(公告)日：2025-02-27

    申请号：US18616884

    申请日：2024-03-26

    Applicant: Samsung Display Co., Ltd.

    Inventor： JONGWON LEE ,  PILGU KANG ,  SEUNG CHEOL KIM ,  CHANG-MIN LEE ,  HAKCHOONG LEE ,  WONSUK HAN ,  JAEHOON HWANG

    IPC: H10K50/13 ,  H10K59/38

    Abstract: A light emitting element includes a first electrode, a first light emitting stack disposed on the first electrode, a second light emitting stack disposed on the first light emitting stack, a third light emitting stack disposed on the second light emitting stack, a fourth light emitting stack disposed on the third light emitting stack, a fifth light emitting stack disposed on the fourth light emitting stack, a second electrode disposed on the fifth light emitting stack, and charge generation layers disposed between adjacent ones of the first light emitting stack to the fifth light emitting stack. Each of the first light emitting stack to the fifth light emitting stack includes at least one emission layer, and the first light emitting stack to the fifth light emitting stack include at least two blue emission layers, at least one green emission layer, and at least one red emission layer.

    LIGHT EMITTING ELEMENT, AND DISPLAY APPARATUS INCLUDING THE SAME
    2.
    发明申请
    LIGHT EMITTING ELEMENT, AND DISPLAY APPARATUS INCLUDING THE SAME 有权

    公开(公告)号：US20250072202A1

    公开(公告)日：2025-02-27

    申请号：US18630147

    申请日：2024-04-09

    Applicant: Samsung Display Co., Ltd.

    Inventor： JONGWON LEE ,  SEUNG CHEOL KIM ,  CHANG-MIN LEE ,  HAKCHOONG LEE ,  JAEHOON HWANG

    IPC: H10K50/13 ,  H10K50/115 ,  H10K50/12 ,  H10K50/15 ,  H10K50/16 ,  H10K59/35

    Abstract: A light emitting element includes a first electrode, a second electrode facing the first electrode, and a plurality of light emitting structures stacked between the first electrode and the second electrode, each of the plurality of light emitting structures including a hole transport region, a light emitting layer, and an electron transport region. At least one of the light emitting structures is a green light emitting structure which emits green light, and the light emitting layer of the green light emitting structure includes a first sub-light emitting layer including a low refractive material having a refractive index value less than or equal to about 1.7 at 460 nm, and a second sub-light emitting layer not including the low refractive material, and disposed on the first sub-light emitting layer, so that the light emitting element may exhibit high light emission efficiency.

    LIGHT EMITTING ELEMENT AND DISPLAY DEVICE INCLUDING THE SAME
    3.
    发明申请
    LIGHT EMITTING ELEMENT AND DISPLAY DEVICE INCLUDING THE SAME 有权

    公开(公告)号：US20230137462A1

    公开(公告)日：2023-05-04

    申请号：US17860395

    申请日：2022-07-08

    Applicant: Samsung Display Co., Ltd.

    Inventor： YOONSEOK KA ,  DONG CHAN KIM ,  JIYOUNG MOON ,  HAKCHOONG LEE ,  HAJIN SONG ,  JIHWAN YOON ,  JAEHOON HWANG

    IPC: H01L51/00 ,  H01L51/50

    Abstract: A light emitting element includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region which is disposed on the emission layer and includes an electron transport layer and an electron injection layer disposed on the electron transport layer, and a second electrode disposed on the electron transport region, wherein the electron injection layer includes a host represented by Formula A or Formula B, and a metal dopant, and the metal dopant includes Ag, Bi, Mg, Li, Yb, Cu, La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, or Lu, thereby improving electron injection characteristics and having excellent or suitable luminous efficiency.

    LIGHT EMITTING DEVICE AND DISPLAY APPARATUS INCLUDING THE SAME
    4.
    发明申请
    LIGHT EMITTING DEVICE AND DISPLAY APPARATUS INCLUDING THE SAME 有权

    公开(公告)号：US20220336766A1

    公开(公告)日：2022-10-20

    申请号：US17575583

    申请日：2022-01-13

    Applicant: Samsung Display Co., Ltd.

    Inventor： JIMYOUNG YE ,  SEULONG KIM ,  HYEKYUN LEE ,  HAJIN SONG ,  JIHWAN YOON ,  DONGSEOB JEONG ,  JAEHOON HWANG

    IPC: H01L51/50

    Abstract: A light emitting devices includes a first electrode, a hole transport region on the first electrode, a first emission layer on the hole transport region, the first emission layer to emit light of a first wavelength, a second emission layer on the hole transport region and to emit light of a second wavelength, an electron transport region on the first and second emission layers, and a second electrode on the electron transport region. The first emission layer includes a first sub-emission layer including a first hole transport host and a first sub-dopant to emit the light of the first wavelength, and a second sub-emission layer including a first electron transport and a second sub-dopant to emit the light of the first wavelength. The second emission layer includes a second hole transport host, a second electron transport host, and a second dopant to emit the light of the second wavelength.

    DISPLAY PANEL, ELECTRONIC DEVICE INCLUDING THE SAME, AND METHOD FOR MANUFACTURING DISPLAY PANEL
    5.
    发明申请
    DISPLAY PANEL, ELECTRONIC DEVICE INCLUDING THE SAME, AND METHOD FOR MANUFACTURING DISPLAY PANEL 有权

    公开(公告)号：US20230130009A1

    公开(公告)日：2023-04-27

    申请号：US17903572

    申请日：2022-09-06

    Applicant: Samsung Display Co., Ltd.

    Inventor： SEHO LEE ,  TAEHYUNG KIM ,  JIHWAN YOON ,  YONGDAE LEE ,  SANGWOO PYO ,  JAEHOON HWANG

    IPC: H01L27/32 ,  H01L51/56 ,  H01L51/52

    Abstract: A display panel includes a circuit layer on a base substrate, a first electrode and an auxiliary electrode disposed on the circuit layer, and spaced apart from each other, a charge generation layer on the first electrode and the auxiliary electrode, a first opening region being defined in the charge generation layer, a second electrode on the charge generation layer, a first organic layer disposed between the first electrode and the charge generation layer, a second opening region being defined in the first organic layer, and a second organic layer disposed between the charge generation layer and the second electrode, a third opening region being defined in the second organic layer. The second electrode is electrically connected to the auxiliary electrode through the first to third opening regions, and the second organic layer includes a protrusion adjacent to the third opening region.

    LIGHT EMITTING DEVICE AND DISPLAY APPARATUS INCLUDING THE SAME
    9.
    发明申请
    LIGHT EMITTING DEVICE AND DISPLAY APPARATUS INCLUDING THE SAME 有权

    公开(公告)号：US20220320467A1

    公开(公告)日：2022-10-06

    申请号：US17591091

    申请日：2022-02-02

    Applicant: Samsung Display Co., Ltd.

    Inventor： JIMYOUNG YE ,  SEULONG KIM ,  HAJIN SONG ,  JIHWAN YOON ,  HYEKYUN LEE ,  DONGSEOB JEONG ,  JAEHOON HWANG

    IPC: H01L51/52 ,  H01L27/32 ,  H01L51/50

    Abstract: A light emitting device includes: a first electrode; a hole transport region disposed on the first electrode; a first emission layer disposed on the hole transport region, and which emits light of a first wavelength; a second emission layer disposed on the hole transport region, and which emits light of a second wavelength different from the first wavelength; an electron transport region disposed on the first emission layer and the second emission layer; a second electrode disposed on the electron transport region; and a capping layer disposed on the second electrode. In exit light emitted to an upper surface of the capping layer, the exit light has a maximum intensity at an azimuth angle of about 25° to about 35°.

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