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.

公开(公告)号：US20230129321A1

公开(公告)日：2023-04-27

申请号：US17748389

申请日：2022-05-19

Applicant: Samsung Display Co., Ltd.

Inventor： HYUNAH UM ,  MINJE KIM ,  YOUNGJIN PARK ,  HEECHOON AHN ,  Juhui YUN ,  YESEUL LEE ,  YIRANG IM

IPC: H01L51/00

Abstract: A light emitting element according to an embodiment includes a first electrode, a second electrode disposed on the first electrode, an emission layer disposed between the first electrode and the second electrode, and a double buffer layer including a first layer disposed on the emission layer and a second layer disposed on the first layer. The first layer includes a first compound, the second layer includes a second compound which is different from the first compound, and the first compound and the second compound are each independently represented by Formula 1 or Formula 2, thereby contributing to increased efficiency and increased life of a light emitting element.

公开(公告)号：US20220140255A1

公开(公告)日：2022-05-05

申请号：US17444342

申请日：2021-08-03

Applicant: Samsung Display Co., Ltd.

Inventor： HYUNAH UM ,  HYEONGMIN KIM ,  HEECHOON AHN ,  YESEUL LEE ,  HYOYOUNG LEE ,  YIRANG IM ,  SEOWON CHO

IPC: H01L51/00

Abstract: An electroluminescence device of the present disclosure includes a first electrode, a second electrode facing the first electrode, and a plurality of organic layers between the first electrode and the second electrode, wherein at least one organic layer selected from among the plurality of organic layers includes a polycyclic compound represented by Formula 1, thereby showing improved emission efficiency: