公开(公告)号：US20240276751A1

公开(公告)日：2024-08-15

申请号：US18537084

申请日：2023-12-12

Applicant: LG Display Co., Ltd.

Inventor： Jeong-Eun WON ,  Chun-Ki KIM ,  Yo-Sub LEE ,  Seung-Ryong JOUNG

IPC: H10K50/12 ,  H10K50/155 ,  H10K50/165 ,  H10K85/30 ,  H10K85/60

CPC classification number: H10K50/12 ,  H10K50/155 ,  H10K50/165 ,  H10K85/342 ,  H10K85/636 ,  H10K85/6572 ,  H10K85/6574

Abstract: An organic light emitting device is disclosed, which comprises: a substrate; a cathode over the substrate; an anode disposed over the cathode; and an organic light emitting layer comprising a first emitting part, a second emitting part between the first emitting part and the anode and a third emitting part between the first and second emitting parts and positioned between the cathode and the anode, wherein the first emitting part comprises a first emitting material layer, and the second emitting part comprises a second emitting material layer, wherein the third emitting part comprises a third emitting material layer, and the third emitting material layer comprises a red emitting material layer and a green emitting material layer, wherein the green emitting material layer comprises a first p-type host, a first n-type host and a green dopant.

公开(公告)号：US20240237524A1

公开(公告)日：2024-07-11

申请号：US18381049

申请日：2023-10-17

Applicant: LG Display Co., Ltd.

Inventor： Yo-Sub LEE ,  Jeong-Eun WON ,  Chun-Ki KIM

IPC: H10K85/60 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16

CPC classification number: H10K85/6572 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K85/633 ,  H10K85/6574

Abstract: An organic light emitting diode (OLED) and an organic light emitting device comprising the OLED (e.g., a display device or a lighting device) are described. An emissive layer disposed between two electrodes comprises an exciton control layer between a red emitting material layer and a green emitting material layer. Exciton recombination zone is distributed uniformly within the entire area of an emitting material layer and holes and electrons can be injected into the emitting material layer in balance. The degradations of the luminous materials and/or charge transporting materials caused by quenched excitons as non-emission can be minimized. The luminous lifespan of the OLED can be improved, while maintaining luminous efficiency.

公开(公告)号：US20240276754A1

公开(公告)日：2024-08-15

申请号：US18527783

申请日：2023-12-04

Applicant: LG Display Co., Ltd.

Inventor： Chun-Ki Kim ,  Jeong-Eun WON ,  Seung-Ryong JOUNG ,  Yo-Sub LEE

IPC: H10K50/15 ,  H10K85/60

CPC classification number: H10K50/157 ,  H10K50/156 ,  H10K85/60 ,  H10K85/624 ,  H10K85/633 ,  H10K85/654 ,  H10K85/6572 ,  H10K50/155 ,  H10K50/166 ,  H10K85/626

Abstract: An organic light emitting device (e.g., a display device or a lighting device) is described, which includes a substrate; and an OLED over the substrate, the organic light emitting diode comprising: a cathode; an anode over the cathode; and an organic light emitting layer including a first emitting part, a second emitting part between the first emitting part and the anode and a third emitting part between the first and second emitting parts. The first emitting part includes a first EML, a p-doping layer between the cathode and the first EML, an n-doping layer between the first EML and the p-doping layer and a first ETL between the first EML and the n-doping layer. The second emitting part includes a second EML, and the third emitting part includes a third EML. The p-doping layer includes an HTL and first and second p-doping layers at both sides of the HTL, respectively.