公开(公告)号：US12239017B2

公开(公告)日：2025-02-25

申请号：US17462859

申请日：2021-08-31

Applicant: BOE Technology Group Co., Ltd.

Inventor： Siqi Wang ,  Haiyan Sun ,  Xiaojin Zhang

IPC: H01L51/00 ,  C09K11/06 ,  H10K85/60 ,  H10K50/11 ,  H10K101/00 ,  H10K101/20 ,  H10K101/40

Abstract: Organic light-emitting devices, display panels and display apparatuses are provided. An organic light-emitting device includes: a first electrode layer; a first light-emitting layer provided on the first electrode layer and including a first host material and a first guest material; a second light-emitting layer provided on the first light-emitting layer and including a second host material and a second guest material; and a second electrode layer provided on the second light-emitting layer. The first guest material has a general structural formula as indicated in Formula I. X is selected from carbon, nitrogen, oxygen, sulfur, or boron; Y is selected from nitrogen or boron, and Y is different from X; and R1 and R2 are selected from hydrogen, methyl, isopropyl, tert-butyl, substituted or unsubstituted aryl, substituted or unsubstituted alkyl aryl, or substituted or unsubstituted nitrogen-containing aryl, respectively.

公开(公告)号：US20240306495A1

公开(公告)日：2024-09-12

申请号：US18025982

申请日：2022-05-30

Applicant: BOE Technology Group Co., Ltd.

Inventor： Siqi Wang ,  Haiyan Sun ,  Lixia Qiu ,  Xiaojin Zhang ,  Dan Wang

IPC: H10K85/60 ,  H10K50/18 ,  H10K101/40

CPC classification number: H10K85/6572 ,  H10K85/615 ,  H10K85/636 ,  H10K85/654 ,  H10K85/657 ,  H10K85/6574 ,  H10K50/181 ,  H10K2101/40

Abstract: The present application provides a light emitting device and a displaying device, which relates to the technical field of displaying. The light emitting device includes a first electrode and a second electrode; a luminescent layer, located between the first electrode and the second electrode, including a host material and a thermally activated delayed-fluorescence material; and an electron blocking layer, located between the luminescent layer and the first electrode; and 0.1 eV

公开(公告)号：US12058932B2

公开(公告)日：2024-08-06

申请号：US17355351

申请日：2021-06-23

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Siqi Wang

IPC: H01L51/50 ,  C07D209/86 ,  C07D239/26 ,  C07D251/24 ,  C07F7/08 ,  C09K11/06 ,  H10K85/40 ,  H10K85/60 ,  H10K50/11 ,  H10K101/00 ,  H10K101/30 ,  H10K102/00

CPC classification number: H10K85/6572 ,  C07D209/86 ,  C07D239/26 ,  C07D251/24 ,  C07F7/0812 ,  C09K11/06 ,  H10K85/40 ,  H10K85/654 ,  C09K2211/1018 ,  H10K50/11 ,  H10K2101/30 ,  H10K2101/90 ,  H10K2102/351

Abstract: The present disclosure provides a co-host material, a composition for forming a light emitting layer, and a light emitting device. The co-host material can at least partially solve the difficulty in the limited selection of thermally activated delayed fluorescent materials in the existing light emitting devices, and the difficulty in providing a light emitting layer of a blue light emitting device. The co-host material comprises a first compound and a second compound each having a specific general formula.