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

    公开(公告)号：US20250056966A1

    公开(公告)日：2025-02-13

    申请号：US18675348

    申请日：2024-05-28

    Applicant: Samsung Display Co., Ltd.

    Inventor： YIRANG IM ,  SEULONG KIM ,  YONGMIN KIM ,  YUNJEONG KIM ,  JIHEE PARK ,  GEUNHYUK JEONG

    IPC: H10K50/858 ,  H10K50/125 ,  H10K50/15 ,  H10K50/16 ,  H10K50/19 ,  H10K85/30 ,  H10K85/60

    Abstract: Embodiments provide a light emitting element that includes a first electrode, a first light emitting unit disposed on the first electrode, a charge generation unit disposed on the first light emitting unit, a second light emitting unit disposed on the charge generation unit, and a second electrode disposed on the second light emitting unit. The first light emitting unit includes a first hole transport region disposed on the first electrode, a first emission layer disposed on the first hole transport region, and a first electron transport region disposed on the first emission layer. The charge generation unit includes an n-type charge generation layer disposed on the first light emitting unit, and a p-type charge generation layer disposed on the n-type charge generation layer. At least one of the p-type charge generation layer and the first hole transport region each independently includes a tertiary amine compound including a cycloalkyl moiety.

    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：US20250133901A1

    公开(公告)日：2025-04-24

    申请号：US19006016

    申请日：2024-12-30

    Applicant: SAMSUNG DISPLAY CO., LTD.

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

    IPC: H10K50/13 ,  H10K50/11 ,  H10K50/19 ,  H10K59/122 ,  H10K59/38 ,  H10K101/00 ,  H10K101/10

    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.

    LIGHT EMITTING DEVICE AND DISPLAY APPARATUS INCLUDING THE SAME
    8.
    发明申请
    LIGHT EMITTING DEVICE AND DISPLAY APPARATUS INCLUDING THE SAME 有权

    公开(公告)号：US20230084087A1

    公开(公告)日：2023-03-16

    申请号：US17745604

    申请日：2022-05-16

    Applicant: Samsung Display Co., Ltd.

    Inventor： JUNGHO CHOI ,  PILGU KANG ,  SEULONG KIM ,  HAJIN SONG ,  DONGSEOB JEONG ,  YANG-JIN CHO

    IPC: H01L51/50 ,  H01L27/32

    Abstract: Provided is a light emitting device including a first electrode, a hole transport region on the first electrode, a first light emitting layer on the hole transport region and emitting light of a first wavelength, a second light emitting layer on the hole transport region and emitting light of a second wavelength different from the first wavelength, an electron transport region on the first light emitting layer and the second light emitting layer, and a second electrode on the electron transport region. The second light emitting layer includes a first sub-light emitting layer including a first host having a first hole transporting host and a first electron transporting host and a dopant emitting light of the second wavelength, and a second sub-light emitting layer including a second host and a second hole transporting host, but not including the dopant. The light emitting device provides improved light emitting efficiency.

    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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