公开(公告)号：US20240206330A1

公开(公告)日：2024-06-20

申请号：US18233202

申请日：2023-08-11

Applicant: LG Display Co., Ltd.

Inventor： Do-Kyun Kwon ,  Min-Hyeong Hwang ,  Eun-Jung Park ,  Yu-Jeong Lee ,  Hyun-Jin Cho ,  Jun-Su Ha

IPC: H10K85/60 ,  C09K11/06 ,  H10K85/30

CPC classification number: H10K85/6572 ,  C09K11/06 ,  H10K85/342 ,  H10K85/631 ,  H10K50/11

Abstract: The present disclosure relates to an organic light emitting diode (OLED) where adjacent emitting material layers includes hosts with different LUMO energy level and/or electron mobility. A first emitting material layer including a first host with relatively slow electron mobility and/or relatively high LUMO energy level is disposed adjacently to a hole transport layer and a second emitting material layer including a second host with relatively fast electron mobility and/or relatively low LUMO energy level is disposed adjacent to an electron transport layer. No exciplex between hole transporting material and the first host is not formed while exciplex between the hole transporting material and the second host is formed so that exciton loss can be minimized. An OLED and an organic light emitting device with low driving voltage and low power consumption and beneficial luminous property and luminous lifetime can be realized.