公开(公告)号：US20210265435A1

公开(公告)日：2021-08-26

申请号：US17317229

申请日：2021-05-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： HYUNYOUNG KIM ,  DOHOON KIM

IPC: H01L27/32

Abstract: An organic light-emitting display apparatus includes a thin-film transistor on a substrate, a planarization layer on the thin-film transistor, and a pixel-defining spacer on the planarization layer. The pixel-defining spacer defines a pixel area between two pixels that are adjacent in a first direction.

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.