公开(公告)号：US20240081146A1

公开(公告)日：2024-03-07

申请号：US18218597

申请日：2023-07-06

Applicant: LG Display Co., Ltd.

Inventor： Yu-Jeong LEE ,  Jung-Keun KIM ,  Mi-Young HAN ,  Min-Hyeong HWANG

IPC: H10K85/60 ,  C07D235/08 ,  C07D471/10 ,  C09K11/06

CPC classification number: H10K85/6572 ,  C07D235/08 ,  C07D471/10 ,  C09K11/06 ,  H10K85/615 ,  H10K85/626 ,  H10K50/166

Abstract: An organic light emitting diode (OLED) includes an emissive layer with at least one emitting part includes at least one emitting material layer, a first electron transport layer and a second electron transport layer disposed sequentially between two facing electrodes, wherein the first electron transport layer includes a first electron transporting material of a benzimidazole-based compound substituted with at least one spiro-structured fluorenyl group and the second electron transport layer includes a second electron transporting material of a benzimidazole-based compound substituted with at least one anthracenyl group. The first electron transport including the first electron transport material with excellent thermal stability is disposed adjacently to the emitting material layer so that the OLED can maintain good luminescent intensity in an environment of high temperature and implement beneficial luminous properties.

公开(公告)号：US20240268141A1

公开(公告)日：2024-08-08

申请号：US18243462

申请日：2023-09-07

Applicant: LG Display Co., Ltd.

Inventor： Eun-Jung PARK ,  Byung-Soo KIM ,  Byung-Geol KIM ,  Seung-Hyun KIM ,  Ju-Hyuk KWON ,  Jang-Dae YOUN ,  Yu-Jeong LEE ,  Min-Hyeong HWANG ,  Do-Kyun KWON ,  Hyun-Jin CHO

IPC: H10K50/13 ,  H10K85/40 ,  H10K85/60

CPC classification number: H10K50/13 ,  H10K85/40 ,  H10K85/622 ,  H10K85/633 ,  H10K85/6572 ,  H10K2101/30

Abstract: An organic light emitting diode (OLED) and an organic light emitting device (e.g., a display device or a lighting device) comprising the OLED are described. An emissive layer includes a red emitting material layer, a yellow-green emitting material layer and a green emitting material layer disposed sequentially between two electrodes, where each of the emitting material layers has controlled thickness and includes at least one host with controlled energy level. The OLED and the organic light emitting device have improved pure color luminous efficiency and color gamut, as well as luminous efficiency and luminous lifespan.