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    LIGHT-EMITTING DEVICE, DISPLAY PANEL, AND DISPLAY DEVICE
    2.
    发明申请
    LIGHT-EMITTING DEVICE, DISPLAY PANEL, AND DISPLAY DEVICE 有权

    公开(公告)号：US20230100815A1

    公开(公告)日：2023-03-30

    申请号：US17788219

    申请日：2021-05-26

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Rongrong GAO ,  Kun MA

    IPC: H01L51/50 ,  H01L51/52 ,  H01L51/00

    Abstract: A light-emitting device includes a first electrode, a second electrode and a light-emitting layer arranged between the first electrode and the second electrode. The light-emitting layer includes a thermally activated delayed fluorescence (TADF) material, and the TADF material includes a donor, an acceptor, and a linking group connected between the donor and the acceptor. The donor includes a donor base unit, and a substituent connected to the donor base unit, and atoms in the donor base unit are located in a first plane. The acceptor includes an acceptor base unit, and a substituent connected to the acceptor base unit, and atoms in the acceptor base unit are located in a second plane. The linking group includes a linking base unit, and a substituent connected to the linking base unit, and atoms in the linking base unit are located in a third plane.

    DISPLAY SUBSTRATE AND MANUFACTURING METHOD THEREFOR, AND DISPLAY DEVICE
    3.
    发明申请
    DISPLAY SUBSTRATE AND MANUFACTURING METHOD THEREFOR, AND DISPLAY DEVICE 有权

    公开(公告)号：US20230006008A1

    公开(公告)日：2023-01-05

    申请号：US17772449

    申请日：2021-06-16

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Kun MA ,  Xiaojin ZHANG ,  Dan WANG ,  Meng ZHAO ,  Rongrong GAO

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

    Abstract: A display substrate includes a backplane, a pixel defining layer, a gas absorption layer, and light-emitting layers. The pixel defining layer is disposed on a side of the backplane, and has a plurality of openings. The gas absorption layer is disposed on a side of the pixel defining layer away from the backplane, and is configured to absorb a gas generated by the pixel definition layer due to an action of ultraviolet rays. The gas absorption layer exposes at least part of regions of the plurality of openings. The light-emitting layers are each at least partially located in an opening in the plurality of openings.

    Organic Light Emitting Device and Display Device
    5.
    发明申请
    Organic Light Emitting Device and Display Device 有权

    公开(公告)号：US20230125001A1

    公开(公告)日：2023-04-20

    申请号：US17610690

    申请日：2021-01-26

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Kun MA ,  Lei CHEN ,  Rongrong GAO

    IPC: H10K50/15 ,  H10K50/16 ,  H10K50/11 ,  H10K85/60

    Abstract: The present disclosure provides an organic light emitting device, including a first electrode, a second electrode and an emitting layer disposed between the first electrode and the second electrode. A hole transporting layer is disposed between the first electrode and the emitting layer. An electron transporting layer is disposed between the second electrode and the emitting layer. The ratio of the hole mobility of the hole transporting layer to the electron mobility of the electron transporting layer is about 10 to 500.

    DISPLAY SUBSTRATE AND DISPLAY DEVICE
    6.
    发明申请
    DISPLAY SUBSTRATE AND DISPLAY DEVICE 有权

    公开(公告)号：US20220320468A1

    公开(公告)日：2022-10-06

    申请号：US17526867

    申请日：2021-11-15

    Applicant: Chengdu BOE Optoelectronics Technology Co., Ltd. ,  BOE Technology Group Co., Ltd.

    Inventor： Junming ZHU ,  Lei CHEN ,  Kun MA ,  Rongrong GAO ,  Juncong LI

    IPC: H01L51/52

    Abstract: A display substrate and a display device are provided. The display substrate includes: a base substrate; and a light-emitting element arranged on the base substrate, and including a first electrode, an organic functional layer and a second electrode arranged sequentially in that order in a direction away from the base substrate. The light-emitting element includes a first surface proximate to the base substrate, a second surface distal to the base substrate, and a side surface arranged between the first surface and the second surface. The display substrate further includes a reflection layer covering at least a part of the side surface and configured to reflect light from the organic functional layer.

    Organic Light Emitting Device and Display Device
    7.
    发明公开
    Organic Light Emitting Device and Display Device 审中-公开

    公开(公告)号：US20230371365A1

    公开(公告)日：2023-11-16

    申请号：US17426652

    申请日：2021-01-26

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Kun MA ,  Lei CHEN ,  Dan WANG

    IPC: H10K85/60 ,  C09K11/06

    CPC classification number: H10K85/633 ,  C09K11/06 ,  H10K85/636 ,  H10K50/181

    Abstract: Provided is an organic light emitting device, including a first electrode, a second electrode, and an emitting layer disposed between the first electrode and the second electrode. An electron blocking layer and a hole transport layer are disposed between the emitting layer and the first electrode. The electron blocking layer is located between the hole transport layer and the emitting layer. The material of the electron blocking layer includes a compound having the following structural formula:

    Organic Light Emitting Device and Display Apparatus
    10.
    发明申请
    Organic Light Emitting Device and Display Apparatus 有权

    公开(公告)号：US20220376198A1

    公开(公告)日：2022-11-24

    申请号：US17439406

    申请日：2020-12-11

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Lei CHEN ,  Lixia QIU ,  Kun MA

    IPC: H01L51/50 ,  H01L51/00

    Abstract: Provided are an organic light emitting device and a display apparatus. An organic light emitting device includes an anode, a cathode, and an emitting layer disposed between the anode and the cathode; wherein the emitting layer includes a host material and a dopant material doped in the host material; the host material includes a first host material and a second host material, and the first host material, the second host material, the electron block layer, and the hole block layer satisfy: |HOMO1-host-HOMOEBL|≤0.2 eV,|LUMOHBL-LUMO2-host|≤0.2 eV, wherein, HOMO1-host is a HOMO energy level of the first host material; HOMOEBL is a HOMO energy level of the electron block layer; LUMO2-host is a LUMO energy level of the second host material, and LUMOHBL is a LUMO energy level of the hole block layer.

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