公开(公告)号：US20250089441A1

公开(公告)日：2025-03-13

申请号：US18576025

申请日：2022-12-21

Applicant: BOE Technology Group Co., Ltd.

Inventor： Lei Chen ,  Dan Wang ,  Xueqin Chen ,  Lixia Qiu

IPC: H10K50/12 ,  H10K50/15 ,  H10K50/18 ,  H10K50/86 ,  H10K85/60 ,  H10K101/40 ,  H10K102/00

Abstract: A light emitting diode is provided. The light emitting diode includes a hole injection layer; and at least one of a hole transport layer or an electron barrier layer. The hole injection layer includes a host material doped with a guest material. The host material includes an aromatic material having one or more large steric hindrance groups.

公开(公告)号：US20240306496A1

公开(公告)日：2024-09-12

申请号：US18026932

申请日：2022-04-22

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yang Liu ,  Lixia Qiu ,  Yuqian Sun

IPC: H10K85/60 ,  H10K50/11 ,  H10K101/00 ,  H10K101/30

CPC classification number: H10K85/6572 ,  H10K85/615 ,  H10K85/654 ,  H10K85/657 ,  H10K85/6574 ,  H10K50/11 ,  H10K2101/30 ,  H10K2101/90

Abstract: The present disclosure provides a luminescent layer, a light emitting device and a display apparatus. The luminescent layer includes: a host material including a hole-type host material and an electron-type host material, wherein by the effect of an external energy, the host material is configured to be capable of forming an exciplex; and a guest material being doped in the host material; wherein an absolute value of a difference between an energy value of a highest occupied molecular orbital HOMO of the hole-type host material and an energy value of a lowest unoccupied molecular orbital LUMO of the electron-type host material satisfies: 2.4 eV≤|HOMO-LUMO|≤3.2 eV. The luminescent layer according to the present disclosure, by using the energy-level configuration between the hole-type host material and the electron-type host material, can reduce the density of the triplet-state excitons, weaken TTA effect, and increase brightening voltage, thereby effectively ameliorating the interference between the pixels.

公开(公告)号：US12193248B2

公开(公告)日：2025-01-07

申请号：US17439406

申请日：2020-12-11

Applicant: BOE Technology Group Co., Ltd.

Inventor： Lei Chen ,  Lixia Qiu ,  Kun Ma

IPC: H01L51/50 ,  H10K50/11 ,  H10K50/12 ,  H10K50/18 ,  H10K85/60 ,  H10K101/40

Abstract: Provided are an organic light emitting device and a display apparatus. An organic light emitting device includes an anode, a cathode, and an emitting layer disposed between the anode and the cathode; wherein the emitting layer includes a host material and a dopant material doped in the host material; the host material includes a first host material and a second host material, and the first host material, the second host material, the electron block layer, and the hole block layer satisfy: |HOMO1-host-HOMOEBL|≤0.2 eV,|LUMOHBL-LUMO2-host|≤0.2 eV, wherein, HOMO1-host is a HOMO energy level of the first host material; HOMOEBL is a HOMO energy level of the electron block layer; LUMO2-host is a LUMO energy level of the second host material, and LUMOHBL is a LUMO energy level of the hole block layer.

公开(公告)号：US12178063B2

公开(公告)日：2024-12-24

申请号：US17429359

申请日：2020-12-24

Applicant: BOE Technology Group Co., Ltd.

Inventor： Lixia Qiu ,  Lei Chen ,  Yang Liu

IPC: H10K50/18 ,  C07C15/28 ,  C07D213/16 ,  C07D239/26 ,  C07D251/24 ,  C07D307/91 ,  C07D405/04 ,  C07D405/12 ,  C07D487/04 ,  C07F5/02 ,  H10K50/11 ,  H10K50/12 ,  H10K85/30 ,  H10K85/60 ,  H10K101/40

Abstract: Provided are an organic light emitting device and a display apparatus. The organic light emitting device includes an anode, a cathode, and an emitting layer disposed between the anode and the cathode, wherein the emitting layer includes a host material and a dopant material doped in the host material; the host material and the dopant material satisfy: |HOMODopant|

公开(公告)号：US12167616B2

公开(公告)日：2024-12-10

申请号：US17364625

申请日：2021-06-30

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yang Liu ,  Lixia Qiu ,  Chuang Chen

IPC: H10K30/80 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K101/40

Abstract: A blue electroluminescent device includes: an anode, a light-emitting layer and a cathode stacked in sequence; wherein the light-emitting layer comprises a first type host material, a second type host material, and a guest doped material, one of the first type host material and the second type host material is a P-type material, and the other of the first type host material and the second type host material is an N-type material. A display panel and a display device are further provided.

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