公开(公告)号：US20240237385A1

公开(公告)日：2024-07-11

申请号：US18368304

申请日：2023-09-14

Applicant: LG Display Co., Ltd.

Inventor： Sun-Hee LEE ,  Hui-Kun YUN ,  Woo-Young LEE ,  Sung-Min JO

IPC: H10K50/13 ,  H10K50/81 ,  H10K50/82 ,  H10K85/60

CPC classification number: H10K50/13 ,  H10K50/81 ,  H10K50/82 ,  H10K85/6572

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 includes a blue emitting material layer and a red emitting material layer disposed adjacently to the blue emitting material layer, where a first host in the blue emitting material layer and a second host in the red emitting material layer have controlled energy levels. As red and blue luminous efficiencies are controlled in balance, stable blue luminous efficiency and beneficial red luminous lifespan can be implemented.

公开(公告)号：US20240224570A1

公开(公告)日：2024-07-04

申请号：US18471872

申请日：2023-09-21

Applicant: LG Display Co., Ltd.

Inventor： Woo-Young LEE ,  Hui-Kun YUN ,  Sun-Hee LEE ,  Sung-Min JO

IPC: H10K50/13 ,  H10K85/60

CPC classification number: H10K50/131 ,  H10K85/626 ,  H10K85/654 ,  H10K85/6572

Abstract: An organic light emitting diode (OLED) and an organic light emitting device including the OLED (e.g., a display device or a lighting device) are disclosed herein. An emissive layer disposed between two electrodes includes a charge control layer with controlled hole mobility and/or a HOMO energy level between a red emitting material layer and a blue emitting material layer. The blue luminous efficiency can be improved and exciton recombination zone is formed within an emitting material layer by injecting holes and electrons into the emitting material layer in balance. As the luminous efficiency of red and blue lights is controlled in balance, beneficial blue luminous efficiency and excellent red luminous efficiency can be realized.