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    DISPLAY PANEL, MANUFACTURING METHOD THEREOF, AND DISPLAY APPARATUS
    21.
    发明申请
    DISPLAY PANEL, MANUFACTURING METHOD THEREOF, AND DISPLAY APPARATUS 有权

    公开(公告)号：US20250089518A1

    公开(公告)日：2025-03-13

    申请号：US18288444

    申请日：2023-02-09

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Haidong WU ,  Yansong LI ,  Mingli LIU ,  Xiaobo DU ,  Hongli WANG

    IPC: H10K59/80 ,  H10K50/115 ,  H10K59/12 ,  H10K59/122 ,  H10K102/00

    Abstract: A display panel, including: a substrate; a pixel defining layer; a plurality of light-emitting devices each including a light-emitting functional layer and first and second electrodes; a supplementary electrode on a side of the second electrode away from the substrate, where an orthographic projection of the supplementary electrode on the substrate covers orthographic projections of light-emitting functional layers and/or second electrodes and/or first electrodes of the light-emitting devices of certain colors on the substrate; a supplementary electrode mutual repulsion layer on a side of the second electrode away from the substrate, where an orthographic projection of the supplementary electrode mutual repulsion layer on the substrate is complementary in pattern with the orthographic projection of the supplementary electrode on the substrate; and an encapsulation layer on a side of the supplementary electrode and the supplementary electrode mutual repulsion layer away from the substrate, and configured to encapsulate the light-emitting devices.

    Organic Light Emitting Device and Display Apparatus
    23.
    发明公开
    Organic Light Emitting Device and Display Apparatus 审中-公开

    公开(公告)号：US20230255045A1

    公开(公告)日：2023-08-10

    申请号：US17608749

    申请日：2021-01-22

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Guanyin WEN ,  Yansong LI ,  Xiaobo DU

    IPC: H10K50/12 ,  H10K50/18 ,  H10K50/13

    CPC classification number: H10K50/121 ,  H10K50/181 ,  H10K50/13 ,  H10K2101/40

    Abstract: Provided is an organic light emitting device, including a first electrode, second electrode, and first and second emitting layers that are disposed between first and second electrodes. The first emitting layer is located on a side of the second emitting layer close to the first electrode. The first emitting layer includes a first host material and first dopant material. The second emitting layer includes a second host material different from the first host material, and second dopant material. An electron block layer disposed between first emitting layer and first electrode, first emitting layer and second emitting layer satisfy:


    |HOMOEBL

    DISPLAY SUBSTRATE AND MANUFACTURING METHOD THEREFOR, AND DISPLAY APPARATUS
    26.
    发明申请
    DISPLAY SUBSTRATE AND MANUFACTURING METHOD THEREFOR, AND DISPLAY APPARATUS 有权

    公开(公告)号：US20230006004A1

    公开(公告)日：2023-01-05

    申请号：US17778891

    申请日：2021-03-05

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Yansong LI ,  Ying BAO ,  Haidong WU ,  Xing FAN ,  Xiaobo DU

    IPC: H01L27/32 ,  H01L51/56

    Abstract: A display substrate has a display region. The display region includes at least a first region, and the first region includes a plurality of first sub-pixel regions. The display substrate includes: a substrate; a plurality of first sub-pixels disposed on a side of the substrate; and a pattern layer disposed on a side of the plurality of first sub-pixels away from the substrate. The pattern layer includes a first pattern and a plurality of second patterns. Boundaries of orthographic projections of part of the second patterns located in the first region on the substrate respectively coincide with boundaries of the first sub-pixel regions; or boundaries of the first sub-pixel regions are respectively located within boundaries of orthographic projections of part of the second patterns located in the first region on the substrate. A portion of the first pattern located in the first region is electrically connected to the first cathode.

    ELECTROLUMINESCENT DEVICE AND METHOD FOR PREPARING THE SAME, DISPLAY PANEL AND DISPLAY DEVICE
    27.
    发明申请
    ELECTROLUMINESCENT DEVICE AND METHOD FOR PREPARING THE SAME, DISPLAY PANEL AND DISPLAY DEVICE 有权

    公开(公告)号：US20220115614A1

    公开(公告)日：2022-04-14

    申请号：US17334466

    申请日：2021-05-28

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Songquan WU ,  Xiaobo DU ,  Guanyin WEN ,  Cheng HAN

    IPC: H01L51/50 ,  H01L51/56

    Abstract: The present disclosure provides an electroluminescent device and a method for preparing the same, a display panel and a display device. The electroluminescent device includes a light emitting layer, a cathode layer, and an electron transport layer arranged between the light emitting layer and the cathode layer. The electron transport layer includes at least a first electron transport material and a second electron transport material that have different LUMO energy levels, and a ratio EM1/EM2 of the weight content of the first electron transport material to that of the second electron transport material decreases in a direction from a surface thereof proximate to the cathode layer to a surface thereof proximate to the light emitting layer. The electroluminescent device of the present disclosure can improve its efficiency and lifetime.

    LIGHT EMITTING DEVICE AND MANUFACTURING METHOD THEREOF AND DISPLAY PANEL
    28.
    发明申请
    LIGHT EMITTING DEVICE AND MANUFACTURING METHOD THEREOF AND DISPLAY PANEL 有权

    公开(公告)号：US20220069247A1

    公开(公告)日：2022-03-03

    申请号：US17412460

    申请日：2021-08-26

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Shu JING ,  Xiaobo DU

    IPC: H01L51/50 ,  H01L51/56 ,  H01L51/52

    Abstract: The present disclosure provides a light emitting device including: a first electrode; a first light emitting layer on a side of the first electrode; an N-type charge generation layer on a side of the first light emitting layer distal to the first electrode; a P-type charge generation layer on a side of the N-type charge generation layer distal to the first light emitting layer; a second light emitting layer on a side of the P-type charge generation layer distal to the N-type charge generation layer; and a second electrode on a side of the second light emitting layer distal to the P-type charge generation layer. The N-type charge generation layer includes a host material which has a lowest unoccupied molecular orbital energy level less than or equal to −2.9 and a glass transition temperature greater than 130° C.

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