公开(公告)号：US11910630B2

公开(公告)日：2024-02-20

申请号：US17359603

申请日：2021-06-27

Applicant: BOE Technology Group Co., Ltd.

Inventor： Qingyu Huang ,  Fudong Chen ,  Huajie Yan ,  Wenqi Liu ,  Zhiqiang Jiao

IPC: H10K50/125 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K71/00

CPC classification number: H10K50/125 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K71/00

Abstract: The present application provides a WOLED device and a preparation method thereof, a WOLED display panel. The WOLED device includes: an anode; a cathode, disposed opposite to the anode; a red-fluorescence emitting layer, disposed on a side of the anode close to the cathode; a green-fluorescence emitting layer, disposed on a side of the red-fluorescence emitting layer close to the cathode; an interlayer, disposed on a side of the green-fluorescence emitting layer; and a blue-fluorescence emitting layer, disposed on a side of the interlayer close to the cathode.

公开(公告)号：US11348976B2

公开(公告)日：2022-05-31

申请号：US16769563

申请日：2019-08-07

Applicant: BOE Technology Group Co., Ltd.

Inventor： Qingyu Huang ,  Huajie Yan ,  Liangliang Kang ,  Fudong Chen ,  Zhiqiang Jiao

IPC: H01L27/32 ,  H01L51/50 ,  H01L51/56

Abstract: A display panel having a plurality of subpixels is provided. The display panel includes a base substrate; a plurality of light emitting elements on the base substrate; and a quantum dot layer on a side of the plurality of light emitting elements away from the base substrate. A respective one of the plurality of light emitting elements includes a first light emitting layer and a second light emitting layer sequentially stacked. The first light emitting layer is configured to emit a first light of a first wavelength range. The second light emitting layer is configured to emit a second light of a second wavelength range. The plurality of light emitting elements are configured to respectively emit a composite light. The quantum dot blocks of different colors are configured to respectively convert the composite light into light of different colors respectively in different subpixels.

公开(公告)号：US20220005884A1

公开(公告)日：2022-01-06

申请号：US16769563

申请日：2019-08-07

Applicant: BOE Technology Group Co., Ltd.

Inventor： Qingyu Huang ,  Huajie Yan ,  Liangliang Kang ,  Fudong Chen ,  Zhiqiang Jiao

IPC: H01L27/32 ,  H01L51/50 ,  H01L51/56

Abstract: A display panel having a plurality of subpixels is provided. The display panel includes a base substrate; a plurality of light emitting elements on the base substrate; and a quantum dot layer on a side of the plurality of light emitting elements away from the base substrate. A respective one of the plurality of light emitting elements includes a first light emitting layer and a second light emitting layer sequentially stacked. The first light emitting layer is configured to emit a first light of a first wavelength range. The second light emitting layer is configured to emit a second light of a second wavelength range. The plurality of light emitting elements are configured to respectively emit a composite light. The quantum dot blocks of different colors are configured to respectively convert the composite light into light of different colors respectively in different subpixels.

公开(公告)号：US12238951B2

公开(公告)日：2025-02-25

申请号：US17629389

申请日：2021-04-09

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Qingyu Huang ,  Fudong Chen ,  Zhiqiang Jiao ,  Guangcai Yuan

IPC: H01L51/50 ,  H01L27/32 ,  H10K50/12 ,  H10K50/13 ,  H10K50/155 ,  H10K50/165 ,  H10K59/32

Abstract: An organic electroluminescent device comprises an anode, a first organic light emitting layer, an exciton control layer, a second organic light emitting layer, and a cathode that are successively stacked, wherein the first organic light emitting layer comprises a hole transport type host material and a first doped material; the exciton control layer is provided on the surface of the first organic light emitting layer away from the anode; the exciton control layer comprises a first hole transport material and a first electron transport material; the second organic light emitting layer comprises an electron transport type host material and a second doped material; the cathode is provided on the side of the second organic light emitting layer away from the anode; and one of the first doped material and the second doped material is a fluorescence-doped material, and the other is a phosphorescence-doped material.

公开(公告)号：US20220246691A1

公开(公告)日：2022-08-04

申请号：US17721218

申请日：2022-04-14

Applicant: BOE Technology Group Co., Ltd.

Inventor： Qingyu Huang ,  Huajie Yan ,  Liangliang Kang ,  Fudong Chen ,  Zhiqiang Jiao

IPC: H01L27/32 ,  H01L51/50 ,  H01L51/56

Abstract: A light emitting element, includes a first light emitting layer and a second light emitting layer sequentially stacked; and an intermediate layer between the first light emitting layer and the second light emitting layer, and being in direct contact with the first light emitting layer on one side and in direct contact with the second light emitting layer on another side. Each of the intermediate layer, the first light emitting layer, and the second light emitting layer includes a same host material. The intermediate layer is a non-light emitting layer, and is an undoped layer absent of a dopant for emitting light. The light emitting element is configured to emit a composite light including the first light of the first wavelength range and the second light of the second wavelength range. The first wavelength range includes wavelength longer than the second wavelength range.

公开(公告)号：US11956991B2

公开(公告)日：2024-04-09

申请号：US17460734

申请日：2021-08-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jin Zhao ,  Fudong Chen ,  Kang Guo ,  Xueyuan Zhou ,  Mengya Song ,  Yanhui Lu ,  Duohui Li ,  Ning Dang

IPC: H10K50/85 ,  H10K71/00 ,  H10K59/12 ,  H10K59/122 ,  H10K102/00

CPC classification number: H10K50/85 ,  H10K71/00 ,  H10K59/1201 ,  H10K59/122 ,  H10K2102/3023 ,  H10K2102/3026

Abstract: A display panel includes a substrate and a grating disposed on a light-emitting side of the display panel. The grating includes a plurality of protruding portions and a plurality of interval portions, each interval portion is located between two adjacent protruding portions. The plurality of protruding portions are arranged on the substrate along a first direction, and each protruding portion extends along a second direction perpendicular to the first direction. Each protruding portion includes an outer surface and a bottom surface; the outer surface is a smooth curved surface, and the bottom surface is a flat surface. A cross-sectional figure of each protruding portion along a thickness direction of the display panel is a first figure; the first figure includes a curve and a bottom edge, and the first figure is a closed figure formed by the curve and the bottom edge. The curve is a cross-sectional figure of the outer surface along the thickness direction of the display panel, and the bottom edge is a cross-sectional figure of the bottom surface along the thickness direction of the display panel.

公开(公告)号：US11737332B2

公开(公告)日：2023-08-22

申请号：US17721218

申请日：2022-04-14

Applicant: BOE Technology Group Co., Ltd.

Inventor： Qingyu Huang ,  Huajie Yan ,  Liangliang Kang ,  Fudong Chen ,  Zhiqiang Jiao

IPC: H01L23/00 ,  H10K59/35 ,  H10K50/11 ,  H10K50/115 ,  H10K50/17 ,  H10K59/38 ,  H10K71/00 ,  H10K101/10 ,  H10K101/40

CPC classification number: H10K59/353 ,  H10K50/11 ,  H10K50/115 ,  H10K50/171 ,  H10K59/38 ,  H10K71/00 ,  H10K2101/10 ,  H10K2101/40

Abstract: A light emitting element, includes a first light emitting layer and a second light emitting layer sequentially stacked; and an intermediate layer between the first light emitting layer and the second light emitting layer, and being in direct contact with the first light emitting layer on one side and in direct contact with the second light emitting layer on another side. Each of the intermediate layer, the first light emitting layer, and the second light emitting layer includes a same host material. The intermediate layer is a non-light emitting layer, and is an undoped layer absent of a dopant for emitting light. The light emitting element is configured to emit a composite light including the first light of the first wavelength range and the second light of the second wavelength range. The first wavelength range includes wavelength longer than the second wavelength range.