公开(公告)号：US11690272B2

公开(公告)日：2023-06-27

申请号：US17539095

申请日：2021-11-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Hao Gao ,  Zhihui Zhang ,  Xu Li ,  Xing Fan ,  Penghao Gu

IPC: H10K59/50 ,  G02F1/01 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/137

CPC classification number: H10K59/50 ,  G02F1/0136 ,  G02F1/137 ,  G02F1/133528 ,  G02F1/133553 ,  G02F1/134309 ,  G02F2201/44 ,  G02F2203/09

Abstract: Embodiments of the disclosure provide a display panel and a display device. The display panel includes a substrate, a plurality of light emitting elements and at least one transmissive-reflective module, where the light emitting elements are arranged on the substrate; each of the light emitting elements includes a first electrode, a light emitting functional layer and a second electrode arranged along a direction vertical to the substrate and away from the substrate; the at least one transmissive-reflective module is arranged on a side, close to the substrate, of the first electrode of at least one of the light emitting elements, and/or on a side, away from the substrate, of the second electrode of at least one of the light emitting elements; the transmissive-reflective module is configured to switch between a transmissive state and a reflective state.

公开(公告)号：US12058883B2

公开(公告)日：2024-08-06

申请号：US17509760

申请日：2021-10-25

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Zhihui Zhang ,  Yan Fan ,  Hao Gao ,  Xing Fan

IPC: H01L51/52 ,  H01L51/56 ,  H10K50/15 ,  H10K50/852 ,  H10K71/00 ,  H10K102/00

CPC classification number: H10K50/852 ,  H10K50/156 ,  H10K71/00 ,  H10K2102/351

Abstract: Provided are a light-emitting device and a manufacturing method thereof, a display panel and a display device. The light-emitting device includes a plurality of light-emitting units including a first, a second, and a third light-emitting unit. Each light-emitting unit includes a micro-cavity structure including an anode, a hole transport layer, a functional layer, and a cathode. The functional layer of the first light-emitting unit includes a first light-emitting layer, a first buffer layer between the first light-emitting layer and the hole transport layer of the first light-emitting unit, and a second buffer layer between the first buffer layer and the first light-emitting layer. The material of the second buffer layer is different from that of the first buffer layer, the second buffer layer has a physical thickness less than or equal to 30 nanometers and an optical thickness less than or equal to 60 nanometers.

公开(公告)号：US12232343B2

公开(公告)日：2025-02-18

申请号：US17638195

申请日：2021-04-26

Applicant: BOE Technology Group Co., Ltd.

Inventor： Zhihui Zhang ,  Yan Fan ,  Xing Fan ,  Shu Jing ,  Huameng Liu ,  Kuo Shen

IPC: H01L51/50 ,  H10K50/11 ,  H10K50/16 ,  H10K50/858 ,  H10K71/12 ,  H10K101/00 ,  H10K102/00

Abstract: An organic light emitting device, a preparation method therefor, and a display apparatus are provided. The organic light emitting device includes an anode, a cathode, and a light emitting layer and an electron transport layer arranged between the anode and the cathode. The electron transport layer is arranged between the light emitting layer and the cathode. The electron transport layer includes a first host material and a second host material. A mixing ratio of the first host material to the second host material of one side of the electron transport layer close to the light emitting layer is different from a mixing ratio of the first host material to the second host material of one side of the electron transport layer away from the light emitting layer.

公开(公告)号：US20250008805A1

公开(公告)日：2025-01-02

申请号：US18264066

申请日：2022-11-24

Applicant: BOE Technology Group Co., Ltd.

Inventor： Cheng Han ,  Qixiao Wu ,  Zhihui Zhang ,  Yanqiang Wang ,  Songquan Wu ,  Yanming Wang ,  Xu Li ,  Le Wang ,  Lihui Luo ,  Yansong Li

IPC: H10K59/38 ,  H10K59/40 ,  H10K59/80 ,  H10K102/00

Abstract: A display substrate includes a light emitting element on a base substrate; and a light modulating structure on a side of the light emitting element away from the base substrate. The light modulating structure includes a color filter layer and a substantially transparent layer on a side of the color filter layer away from the base substrate. The color filter layer includes a plurality of color filter units, a respective color filter unit of the plurality of color filter units being in an individual subpixel. Adjacent color filter units are spaced apart by a portion of the substantially transparent layer that extends into a region between the adjacent color filter units. An orthographic projection of the respective color filter unit on the base substrate at least partially overlaps with an orthographic projection of a light emitting layer of the light emitting element on the base substrate.