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    LIGHT-EMITTING DIODE, DISPLAY PANEL, AND DISPLAY DEVICE
    11.
    发明公开
    LIGHT-EMITTING DIODE, DISPLAY PANEL, AND DISPLAY DEVICE 审中-公开

    公开(公告)号：US20230380278A1

    公开(公告)日：2023-11-23

    申请号：US18027500

    申请日：2021-01-06

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Xinghua LIU ,  Xiaojin ZHANG ,  Haiyan SUN ,  Yong WU

    IPC: H10K85/60 ,  H10K50/15

    CPC classification number: H10K85/6572 ,  H10K85/631 ,  H10K85/654 ,  H10K50/15 ,  H10K50/181

    Abstract: Provided is a light-emitting diode. The light-emitting diode includes: an anode; a hole transport layer, disposed on a side of the anode and containing a hole transport material, wherein the hole transport material includes an organic small molecule material with a molecular weight less than 4000, and a hole mobility of the hole transport material is not less than 1×E−5 cm2/(VS); a light-emitting layer, disposed on a side, distal from the anode, of the hole transport layer, and containing a quantum dot material; an electron buffer layer, disposed on a side, distal from the hole transport layer, of the light-emitting layer, and containing a thermally activated delayed fluorescent material; and a cathode, disposed on a side, distal from the light-emitting layer, of the electron buffer layer.

    ORGANIC ELECTROLUMINESCENT DEVICE, DISPLAY PANEL, AND DISPLAY DEVICE
    13.
    发明申请
    ORGANIC ELECTROLUMINESCENT DEVICE, DISPLAY PANEL, AND DISPLAY DEVICE 有权

    公开(公告)号：US20230056639A1

    公开(公告)日：2023-02-23

    申请号：US17789693

    申请日：2021-08-04

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Yong WU ,  Xiaojin ZHANG

    IPC: H01L51/50

    Abstract: The present invention provides an organic electroluminescent device, a display panel, and a display device. An organic electroluminescent device, including: an anode and a cathode, arranged in opposite; a light-emitting layer, between the anode and the cathode; a first auxiliary function layer, between the light-emitting layer and the anode; and a second auxiliary function layer, between the light-emitting layer and the cathode; where the light-emitting layer comprises a first compound, a second compound and a third compound; a Stokes shift between an absorption spectrum of the second compound and an emission spectrum of the second compound is smaller than 70 nm; and a doping mass ratio of the second compound in the light-emitting layer is smaller than 50 wt %.

    DISPLAY SUBSTRATE AND MANUFACTURING METHOD THEREFOR, AND DISPLAY DEVICE
    14.
    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, DISPLAY DEVICE, PREPARATION METHOD AND STORAGE MEDIUM
    15.
    发明申请
    ORGANIC LIGHT EMITTING DEVICE, DISPLAY DEVICE, PREPARATION METHOD AND STORAGE MEDIUM 有权

    公开(公告)号：US20220271252A1

    公开(公告)日：2022-08-25

    申请号：US17532502

    申请日：2021-11-22

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Xinghua LIU ,  Xiaojin ZHANG ,  Haiyan SUN

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

    Abstract: The present disclosure relates to an organic light emitting device, a display device, a preparation method, a storage medium and a computer equipment. The organic light emitting device includes an anode, an organic layer and a cathode, in which the organic layer includes a hole injection layer, a hole transport layer, an electron blocking layer, an organic light emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer, which are sequentially arranged in a stack on the anode, in which the hole injection layer includes a first host material and a first doping material doped in the first host material, a doping concentration of the first doping material gradually decreases in a direction away from the anode, and a doping ratio of the first doping material in the hole injection layer is less than or equal to 6%.

    ORGANIC LIGHT-EMITTING DEVICES, DISPLAY PANELS AND DISPLAY APPARATUSES
    16.
    发明申请
    ORGANIC LIGHT-EMITTING DEVICES, DISPLAY PANELS AND DISPLAY APPARATUSES 有权

    公开(公告)号：US20220102648A1

    公开(公告)日：2022-03-31

    申请号：US17462859

    申请日：2021-08-31

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Siqi WANG ,  Haiyan SUN ,  Xiaojin ZHANG

    IPC: H01L51/00

    Abstract: Organic light-emitting devices, display panels and display apparatuses are provided. An organic light-emitting device includes: a first electrode layer; a first light-emitting layer provided on the first electrode layer and including a first host material and a first guest material; a second light-emitting layer provided on the first light-emitting layer and including a second host material and a second guest material; and a second electrode layer provided on the second light-emitting layer. The first guest material has a general structural formula as indicated in Formula I. X is selected from carbon, nitrogen, oxygen, sulfur, or boron; Y is selected from nitrogen or boron, and Y is different from X; and R1 and R2 are selected from hydrogen, methyl, isopropyl, tert-butyl, substituted or unsubstituted aryl, substituted or unsubstituted alkyl aryl, or substituted or unsubstituted nitrogen-containing aryl, respectively.

    DISPLAY PANEL AND METHOD OF MANUFACTURING THE SAME, DISPLAY DEVICE
    17.
    发明申请
    DISPLAY PANEL AND METHOD OF MANUFACTURING THE SAME, DISPLAY DEVICE 审中-公开

    公开(公告)号：US20200209916A1

    公开(公告)日：2020-07-02

    申请号：US16624076

    申请日：2019-04-15

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Xiaojin ZHANG ,  Dan WANG ,  Lei CHEN

    IPC: G06F1/16 ,  G02B1/14 ,  G09F9/30 ,  H01L51/00 ,  H01L51/56 ,  H01L51/52

    Abstract: A display panel includes: a flexible substrate, and the flexible substrate includes an intermediate region and a preset bending region located at at least one side of a periphery of the intermediate region; a display layer located at a side of the flexible substrate; and a transparent cover film layer located at a side of the display layer away from the flexible substrate, and the transparent cover film layer includes a first portion located at a side of the display layer away from the intermediate region, and a second portion located at a side of the display layer away from the preset bending region. The first portion is connected to the second portion, and the thickness of at least partial region of the second portion progressively decreases in a direction away from the first portion.

    LIGHT-EMITTING DEVICE, DISPLAY PANEL AND DISPLAY APPARATUS
    20.
    发明申请
    LIGHT-EMITTING DEVICE, DISPLAY PANEL AND DISPLAY APPARATUS 有权

    公开(公告)号：US20250098400A1

    公开(公告)日：2025-03-20

    申请号：US18576367

    申请日：2023-05-17

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Haiyan SUN ,  Xiaojin ZHANG ,  Dan WANG

    IPC: H10K50/125 ,  H10K50/12 ,  H10K85/30 ,  H10K101/00 ,  H10K101/10 ,  H10K101/40

    Abstract: A light-emitting device is provided, and the light-emitting device includes a first electrode, a second electrode and at least two light-emitting units. The first electrode and the second electrode are arranged in a first direction in sequence. The at least two light-emitting units are disposed between the first electrode and the second electrode, and are arranged in a second direction, and the second direction intersects the first direction. Photons emitted by each light-emitting unit of the at least two light-emitting units include first luminescent photons and second luminescent photons. Emission time of the first luminescent photons is less than emission time of the second luminescent photons. The number of second luminescent photons emitted by at least one light-emitting unit is less than or equal to the number of first luminescent photons emitted by the at least one light-emitting unit.

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