公开(公告)号：US20250011646A1

公开(公告)日：2025-01-09

申请号：US18580198

申请日：2023-01-28

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Wenzhu Jing ,  Dongxu Zhang ,  Xueqin Chen ,  Bingyan Liang ,  Lei Chen

IPC: C09K11/06 ,  C09K11/02 ,  H10K50/12 ,  H10K50/858 ,  H10K85/60

Abstract: A light-emitting device includes at least two capping layers which include a first capping layer closest to a second electrode. A refractive index of a capping layer closer to the second electrode is greater than that of a capping layer farther away from the second electrode. A first capping layer material satisfies at least one of: the intermolecular minimum center-of-mass distance of the first capping layer material is in a range of 2 Å to 6 Å, and the dimension of the molecular structure of the first capping layer material in the third direction is in a range of 3 Å to 15 Å; and further satisfies at least one of: the molecular volume of the first capping layer material is in a range of 4000 Bohr3 to 8000 Bohr3, and the molecular density of the first capping layer material is in a range of 1.2 g/cm3 to 2.6 g/cm3.

公开(公告)号：US20240300970A1

公开(公告)日：2024-09-12

申请号：US18020721

申请日：2022-03-31

Applicant: BOE Technology Group Co., Ltd.

Inventor： Lei Chen ,  Xueqin Chen ,  Bingyan Liang ,  Dongxu Zhang

IPC: C07D493/04 ,  C07D403/14 ,  C07D491/048 ,  C07D495/04 ,  C07D519/00 ,  H10K50/84

CPC classification number: C07D493/04 ,  C07D403/14 ,  C07D491/048 ,  C07D495/04 ,  C07D519/00 ,  H10K50/84

Abstract: The present application provides a light-emitting device and a display device, which relates to the field of display technology, including: a substrate; a first electrode and a second electrode located on the substrate: a light-emitting layer located between the first electrode and the second electrode; and a capping layer located on a side of the second electrode away from the light-emitting layer, wherein the capping layer includes a compound of aromatic amines, and a structure of the compound of aromatic amines includes one of following two structures 1:




and the capping layer made of the compound of aromatic amines has a high refractive index and high stability, such that when the light-emitting device is used, the light-outlet efficiency of the device may be improved, and the service life of the device may be prolonged.