公开(公告)号：US20240260298A1

公开(公告)日：2024-08-01

申请号：US18235577

申请日：2023-08-18

Applicant: LG Display Co., Ltd.

Inventor： Sun-Hee LEE ,  Hong-Seok CHOI ,  Sung-Min JO

IPC: H10K50/13 ,  H10K50/805 ,  H10K85/60

CPC classification number: H10K50/13 ,  H10K50/805 ,  H10K85/6574

Abstract: The present disclosure relates to an organic light emitting diode (OLED) where an emissive layer comprises four emitting parts each of which is sequentially disposed between a first electrode and a second electrode; and charge generation layers each of which is disposed between emitting parts, where one emitting part comprises a red emitting material layer and a blue emitting material layer comprising a blue emitter and a host having a high HOMO and/or a LUMO energy levels. The OLED may implement efficient white emission by improving the blue emission intensity and/or blue temperature.

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.

公开(公告)号：US20240215288A1

公开(公告)日：2024-06-27

申请号：US18229358

申请日：2023-08-02

Applicant: LG Display Co., Ltd.

Inventor： Sung-Min JO ,  Hong-Seok CHOI ,  Sun-Hee LEE

IPC: H10K50/125 ,  H10K50/814 ,  H10K50/82 ,  H10K77/10 ,  H10K85/60

CPC classification number: H10K50/125 ,  H10K50/814 ,  H10K50/82 ,  H10K77/10 ,  H10K85/622 ,  H10K85/653 ,  H10K2102/101

Abstract: An organic light emitting diode (OLED) is described, where a red emitting material layer, a first blue emitting material layer and a second blue emitting material layer are disposed sequentially between two electrodes. A first blue host in the first blue emitting material layer has a hole mobility faster than a hole mobility of a second blue host in the second blue emitting material layer. Holes and electrons are injected into an emitting material layer in balance so that an exciton recombination zone is formed within the emitting material layer. Red and blue emission efficiencies are controlled in balance so that an OLED with beneficial blue emission efficiency and high red emission lifetime can be realized. An organic light emitting device includes the organic light emitting diode, and can be a display device or a lighting device.