公开(公告)号：US20220181585A1

公开(公告)日：2022-06-09

申请号：US17468110

申请日：2021-09-07

Applicant: Samsung Display Co., Ltd.

Inventor： Hyun SHIN ,  Illhun CHO

IPC: H01L51/52 ,  H01L51/00

Abstract: A light-emitting device includes a first electrode, a second electrode facing the first electrode, and an interlayer disposed between the first electrode and the second electrode. The interlayer includes an emission layer, and a distributed Bragg reflector (DBR) layer in which a first layer and a second layer are alternately stacked. A refractive index of the first layer is different from a refractive index of the second layer.

公开(公告)号：US20210066617A1

公开(公告)日：2021-03-04

申请号：US17003743

申请日：2020-08-26

Applicant: Samsung Display Co., Ltd.

Inventor： Hyun SHIN ,  Jinwon SUN

IPC: H01L51/00 ,  C07D209/86 ,  C09K11/06 ,  C07D209/88 ,  C07F7/08 ,  C07D409/14 ,  C07F15/00

Abstract: A light-emitting device includes a first electrode, a second electrode, and an interlayer between the first electrode and the second electrode and including an emission layer, wherein the emission layer includes a first host, a second host, and a dopant, the first host and the second host are to form an exciplex, and the exciplex, the first host, and the second host satisfy Condition 1: 0.5 eV≤[{T1(H1)−S1(Ex)}+{T1(H2)−S1(Ex)}]≤0.9 eV  Condition 1 wherein, in Condition 1, T1(H1) indicates a lowest excitation triplet energy level of the first host, T1(H2) indicates a lowest excitation triplet energy level of the second host, and S1(Ex) indicates a lowest excitation singlet energy level of the exciplex.

公开(公告)号：US20200350507A1

公开(公告)日：2020-11-05

申请号：US16859763

申请日：2020-04-27

Applicant: Samsung Display Co., Ltd.

Inventor： Jinwon SUN ,  Jaejin LYU ,  Jungsub LEE ,  Hyun SHIN ,  Yoonkyoo LEE

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/00

Abstract: An organic light-emitting device includes: a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer includes an emission layer having a first layer, and the first layer includes a first compound, a second compound, and a third compound. The first compound is a hole transporting host compound, the second compound is an electron transporting host compound, and the third compound is a hole transporting host compound or an electron transporting host compound. The first compound and the second compound form a first exciplex, and the first compound and the third compound, or the second compound and the third compound form a second exciplex, where the first exciplex and the second exciplex are different from each other.