公开(公告)号：US20250056966A1

公开(公告)日：2025-02-13

申请号：US18675348

申请日：2024-05-28

Applicant: Samsung Display Co., Ltd.

Inventor： YIRANG IM ,  SEULONG KIM ,  YONGMIN KIM ,  YUNJEONG KIM ,  JIHEE PARK ,  GEUNHYUK JEONG

IPC: H10K50/858 ,  H10K50/125 ,  H10K50/15 ,  H10K50/16 ,  H10K50/19 ,  H10K85/30 ,  H10K85/60

Abstract: Embodiments provide a light emitting element that includes a first electrode, a first light emitting unit disposed on the first electrode, a charge generation unit disposed on the first light emitting unit, a second light emitting unit disposed on the charge generation unit, and a second electrode disposed on the second light emitting unit. The first light emitting unit includes a first hole transport region disposed on the first electrode, a first emission layer disposed on the first hole transport region, and a first electron transport region disposed on the first emission layer. The charge generation unit includes an n-type charge generation layer disposed on the first light emitting unit, and a p-type charge generation layer disposed on the n-type charge generation layer. At least one of the p-type charge generation layer and the first hole transport region each independently includes a tertiary amine compound including a cycloalkyl moiety.