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    DISPLAY PANEL, PREPARATION METHOD THEREOF AND DISPLAY APPARATUS
    1.
    发明申请
    DISPLAY PANEL, PREPARATION METHOD THEREOF AND DISPLAY APPARATUS 有权

    公开(公告)号：US20250098403A1

    公开(公告)日：2025-03-20

    申请号：US18577163

    申请日：2023-03-29

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Pengfei ZUO ,  Guanyin WEN ,  Yanjun HAO ,  Hui ZHOU ,  Qixiao WU ,  Huameng LIU

    IPC: H10K50/19 ,  H10K50/13 ,  H10K59/12 ,  H10K59/122 ,  H10K102/00

    Abstract: A display panel, including a substrate, and a first electrode, at least two emission functional layers and a second electrode sequentially stacked on a side of the substrate, where for any two adjacent emission functional layers, one close to the substrate includes a first hole transport layer, a first emission layer, a first electron transport layer, and an N-type charge generation layer sequentially stacked away from the substrate, and the other away from the substrate includes a P-type charge generation layer, a second hole transport layer, a second emission layer, and a second electron transport layer sequentially stacked away from the N-type charge generation layer; the first electron transport layer has a thickness ranging from 3 nm to 10 nm; the first electron transport layer includes first, second and third subportions; and the first subportion has a thickness smaller than those of the second and third subportions.

    DISPLAY PANEL AND MANUFACTURING METHOD THEREFOR, AND DISPLAY APPARATUS
    2.
    发明公开
    DISPLAY PANEL AND MANUFACTURING METHOD THEREFOR, AND DISPLAY APPARATUS 审中-公开

    公开(公告)号：US20240057368A1

    公开(公告)日：2024-02-15

    申请号：US18260876

    申请日：2021-10-22

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Yanjun HAO ,  Caiyu QU ,  Xiaobo DU

    IPC: H10K50/15 ,  H10K59/35 ,  H10K71/60

    CPC classification number: H10K50/156 ,  H10K59/35 ,  H10K71/60 ,  H10K2101/40

    Abstract: A display panel and a manufacturing method therefor, and a display apparatus. The display panel includes: a hole transport layer; a buffer layer, including at least one of first and second buffer layers respectively in first and second sub-pixels; a light-emitting layer, HOMO energy level difference between the first light-emitting layer and the first hole transport layer being a first difference, and absolute value of HOMO energy level difference between the second light-emitting layer and the second hole transport layer being greater than 0 and less than the first difference; and a cathode. HOMO energy levels of first buffer sub-layers gradually increase in the direction from the first hole transport layer to the first light-emitting layer. HOMO energy level difference between the second light-emitting layer and the second buffer layer or the second buffer layer and the second hole transport layer is greater than or equal to 0.3 eV.

    DISPLAY PANEL, PREPARATION METHOD THEREFOR AND DISPLAY APPARATUS
    4.
    发明申请
    DISPLAY PANEL, PREPARATION METHOD THEREFOR AND DISPLAY APPARATUS 有权

    公开(公告)号：US20230054532A1

    公开(公告)日：2023-02-23

    申请号：US17797318

    申请日：2021-10-25

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Caiyu QU ,  Yanjun HAO ,  Hao LIU ,  Hejin WANG ,  Huijuan ZHANG ,  Zheng LIU

    IPC: G06V40/13 ,  H01L51/52 ,  H01L27/32 ,  G06V40/12

    Abstract: The present application relates to the technical field of display, and discloses a display panel, a preparation method therefor, and a display apparatus. The material of a filter film layer in the display panel comprises a conductive material, so the filter film layer may be used as a detection plate of a fingerprint identification circuit. Moreover, since the filter film layer is located on the side of a display function film layer away from a base substrate, the filter film layer is far away from a signal line in the display function film layer, and is not easily affected by the signal line. When the filter film layer is used as the detection plate, the signal-to-noise ratio of a fingerprint signal detected by the fingerprint identification circuit may be larger, and the fingerprint identification effect may be better. Moreover, when the filter film layer is used as the detection plate, the distance between the filter film layer and an obstacle relative to the display function film layer is relatively short. Therefore, the signal detected by the fingerprint identification circuit may be made larger, thereby ensuring the fingerprint identification effect.

    DISPLAY SUBSTRATE AND METHOD FOR MANUFACTURING THE SAME, AND DISPLAY APPARATUS
    5.
    发明申请
    DISPLAY SUBSTRATE AND METHOD FOR MANUFACTURING THE SAME, AND DISPLAY APPARATUS 有权

    公开(公告)号：US20250089508A1

    公开(公告)日：2025-03-13

    申请号：US18247321

    申请日：2022-05-30

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Caiyu QU ,  Yanjun HAO

    IPC: H10K59/35 ,  H10K59/80

    Abstract: A display substrate includes a base, a light-emitting device layer and a light extraction layer disposed in sequence. The base includes first sub-pixel regions, second sub-pixel regions and third sub-pixel regions. The light-emitting device layer includes first light-emitting devices, second light-emitting devices and third light-emitting devices that emit light of different colors. The light extraction layer includes first light extraction portions, second light extraction portions and third light extraction portions. The first light extraction portion and first light-emitting device are located in the first sub-pixel region, the second light extraction portion and second light-emitting device are located in the second sub-pixel region, and the third light extraction portion and third light-emitting device are located in the third sub-pixel region. At least two of the first light extraction portion, the second light extraction portion and the third light extraction portion have different dimensions in a thickness direction of the base.

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