公开(公告)号：US20230127039A1

公开(公告)日：2023-04-27

申请号：US17889217

申请日：2022-08-16

Applicant: Samsung Display Co., Ltd.

Inventor： TSUYOSHI NAIJO ,  HYOSUP SHIN ,  JIYOUNG LEE

IPC: H01L51/00 ,  H01L51/50

Abstract: A light emitting element includes a first electrode, a second electrode disposed on the first electrode, and an emission layer disposed between the first electrode and the second electrode. The emission layer may include a hole transporting host, an electron transporting host, a phosphorescent sensitizer, and a delayed fluorescent dopant. The delayed fluorescent dopant may have a greater absolute value of the HOMO energy level than the hole transporting host. Accordingly, the light emitting element including the delayed fluorescent dopant in an embodiment may exhibit long lifespan.

公开(公告)号：US20220328766A1

公开(公告)日：2022-10-13

申请号：US17683546

申请日：2022-03-01

Applicant: Samsung Display Co., Ltd.

Inventor： HYOSUP SHIN ,  JIYOUNG LEE ,  HYUNYOUNG KIM ,  TSUYOSHI NAIJO

IPC: H01L51/00

Abstract: Provided is a light emitting diode including a first electrode, a second electrode disposed on the first electrode, and an emission layer disposed between the first electrode and the second electrode and including a polycyclic compound represented by Formula 1, thereby exhibiting high luminous efficiency and improved lifespan characteristics.

公开(公告)号：US20210098714A1

公开(公告)日：2021-04-01

申请号：US16906991

申请日：2020-06-19

Applicant: Samsung Display Co., Ltd.

Inventor： MINSOO CHOI ,  MINJE KIM ,  EUNG DO KIM ,  HYUNYOUNG KIM ,  HYOJEONG KIM ,  HYOSUP SHIN ,  SEOKGYU YOON ,  YOUNGKI LEE ,  JUNGSUB LEE ,  JIYOUNG LEE ,  HYEJIN JUNG ,  KUNWOOK CHO ,  HYEON GU CHO ,  YOUNGEUN CHOI ,  JAEJIN LYU

IPC: H01L51/00

Abstract: An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and an emission layer disposed between the first electrode and the second electrode, wherein the emission layer includes a host having a first luminescent onset wavelength, a first dopant having a second luminescent onset wavelength, and a second dopant different from the first dopant and having a third luminescent onset wavelength. The third luminescent onset wavelength is greater than each of the first luminescent onset wavelength and the second luminescent onset wavelength, and the device has improved emission efficiency and/or long-lifespan characteristics.