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.