公开(公告)号：US20240284742A1

公开(公告)日：2024-08-22

申请号：US18042667

申请日：2022-01-20

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xu YUAN

IPC: H10K59/35 ,  H10K50/115 ,  H10K59/12 ,  H10K101/30 ,  H10K102/00

CPC classification number: H10K59/353 ,  H10K50/115 ,  H10K59/1201 ,  H10K2101/30 ,  H10K2102/351

Abstract: A light-emitting substrate includes a plurality of light-emitting devices including at least one first light-emitting device. Each light-emitting device includes a light-emitting pattern The first light-emitting device further includes a first material layer including a first material A material of a light-emitting pattern included in first light-emitting device includes a first light-emitting material. The first material is capable of generating a second material under light irradiation of a first wavelength band, and a solubility of the first material and a solubility of the first light-emitting material are each different from a solubility of the second material in a same solvent; or the first material is generated by a third material under light irradiation of a second wavelength band, and a solubility of the first material and a solubility of the first light-emitting material are each different from a solubility of the second material er the third material in a same solvent.

公开(公告)号：US20250017033A1

公开(公告)日：2025-01-09

申请号：US18278674

申请日：2022-05-23

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Di ZHANG ,  Yang GAO ,  Xu YUAN ,  Zhuo LI ,  Zhuo CHEN

IPC: H10K50/115 ,  B82Y20/00 ,  B82Y40/00 ,  C09K11/02 ,  H10K50/16 ,  H10K71/15 ,  H10K71/40 ,  H10K85/30 ,  H10K102/00

Abstract: A quantum dots light-emitting device and a manufacturing method thereof are provided, which includes: an electron transport layer, an auxiliary layer, and a quantum dot light-emitting layer sequentially stacked, the quantum dot light-emitting layer includes quantum dots, surfaces of the quantum dots are provided with a first ligand, the first ligand includes a first functional group connected to the quantum dots and a second functional group away from the quantum dots; surfaces of the quantum dots in contact with the first ligand have a compound formed by a metal element and a nonmetallic element, a material of the auxiliary layer includes at least one selected from a group consisting of a compound containing the second functional group, a compound containing the metal element, and a compound containing the nonmetallic element. The auxiliary layer firstly occupies a site where unnecessary quantum dots may remain.

公开(公告)号：US20250013147A1

公开(公告)日：2025-01-09

申请号：US18277589

申请日：2022-03-18

Applicant: Beijing BOE Technology Development Co., Ltd. ,  BOE Technology Group Co., Ltd.

Inventor： Zhuo CHEN ,  Zhuo LI ,  Di ZHANG ,  Xu YUAN

IPC: G03F7/004 ,  B82Y20/00 ,  B82Y40/00 ,  C09K11/02 ,  G03F7/00 ,  G03F7/30 ,  H10K50/115 ,  H10K71/20

Abstract: The disclosure provides a quantum dot mixture, a quantum dot light emitting layer and a preparation method thereof, relates to the field of display technology. The preparation method of quantum dot light emitting layer includes: providing a substrate; forming a quantum dot film layer on one side of the substrate, which comprises a first quantum dot body-first ligand and a second quantum dot body-second ligand; exposing a predetermined region of the substrate to form a cross-linkage or a salt insoluble in the developer via a reaction between the first ligand and the second ligand in the predetermined region of the quantum dot film layer; and developing to remove the quantum dot film layer in the non-predetermined region of the substrate, and obtain the quantum dot light emitting layer. The disclosure provides a basis for the formation of the quantum dot light emitting layer using photolithography technology.

公开(公告)号：US20240381751A1

公开(公告)日：2024-11-14

申请号：US18249556

申请日：2022-04-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xu YUAN ,  Xiaoyuan ZHANG ,  Zhuo CHEN ,  Zhuo LI ,  Di ZHANG

IPC: H10K59/95 ,  H10K50/115 ,  H10K71/12 ,  H10K71/20 ,  H10K71/60

Abstract: A light-emitting substrate includes a substrate and a first light-emitting device. The first light-emitting device includes a first electrode, a first functional layer, a first light-emitting pattern and a second electrode that are sequentially disposed in a direction away from the substrate. The first functional layer is in contact with the first light-emitting pattern. The first light-emitting pattern includes a first light-emitting material. The first light-emitting material includes first light-emitting particles and first ligands combined with the first light-emitting particles. The first functional layer includes a first functional material. The first functional material includes first functional particles and second ligands combined with the first functional particles. A development characteristic of the first ligands is same as a development characteristic of the second ligands.

公开(公告)号：US20240224559A1

公开(公告)日：2024-07-04

申请号：US17921087

申请日：2021-12-15

Applicant: Beijing BOE Technology Development Co., Ltd. ,  BOE Technology Group Co., Ltd.

Inventor： Tieshi WANG ,  Zhuo CHEN ,  Zhuo LI ,  Xu YUAN ,  Di ZHANG

IPC: H10K50/115 ,  C09K11/06 ,  H10K59/35 ,  H10K71/15 ,  H10K85/10

CPC classification number: H10K50/115 ,  C09K11/06 ,  H10K59/35 ,  H10K71/15 ,  H10K85/141 ,  H10K85/151

Abstract: A light emitting device and a fabricating method thereof, and a light emitting apparatus. The light emitting device includes: a substrate, and an assisting layer and a quantum-dot layer that are provided in stack on one side of the substrate, and the assisting layer is close to the substrate; a material of the assisting layer includes a non-polar polymer; and the quantum-dot layer includes quantum dots and a first ligand material coordinated to the quantum dots, and a property of the first ligand material changes by an effect of illumination, so that a solubility of the quantum-dot layer in an organic solvent changes.