公开(公告)号：US20230139475A1

公开(公告)日：2023-05-04

申请号：US17975472

申请日：2022-10-27

Applicant: Samsung Display Co., Ltd.

Inventor： Namsu Kang ,  Songeun Lee ,  Minkyung Kim ,  Seulong Kim ,  Hyunshik Lee

IPC: H01L51/50 ,  H01L51/00

Abstract: A light-emitting device and an electronic apparatus including the same. The light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an interlayer between the first electrode and the second electrode, wherein the interlayer includes a first emission layer and a second emission layer, the first emission layer includes a first hole transport host, a second electron transport host, and a first phosphorescent dopant, the second emission layer includes a second hole transport host, a second electron transport host, and a second phosphorescent dopant, and wherein (i) hole mobility of the first emission layer is faster than electron mobility of the first emission layer, or (ii) hole mobility of the first hole transport host in the first emission layer is faster than electron mobility of the first electron transport host in the first emission layer.

公开(公告)号：US20230113809A1

公开(公告)日：2023-04-13

申请号：US17723353

申请日：2022-04-18

Applicant: Samsung Display Co., Ltd.

Inventor： Heungsu Park ,  Namsu Kang ,  Songeun Lee ,  Jongwon Lee ,  Hyunshik Lee ,  Wonsuk Han

IPC: H01L51/00

Abstract: A light emitting device in which: a) an absolute value of a lowest unoccupied molecular orbital (LUMO) energy level of a first electron transporting compound (ET-1) is smaller than an absolute value of a LUMO energy level of a host compound (H-1), b) an absolute value of a LUMO energy level of a second electron transporting compound (ET-2) is smaller than an absolute value of a LUMO energy level of a third electron transporting compound (ET-3), c) and an absolute value of a LUMO energy level of the second electron transporting compound (ET-2) is smaller than an absolute value of a LUMO energy level of the first electron transporting compound (ET-1).

公开(公告)号：US09806296B2

公开(公告)日：2017-10-31

申请号：US14789652

申请日：2015-07-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Namsu Kang ,  Jihye Shim ,  Jihwan Yoon

IPC: H01L29/08 ,  H01L29/04 ,  H01L27/15 ,  H01L33/00 ,  H01L51/52 ,  H01L51/50

CPC classification number: H01L51/5275 ,  H01L51/5012 ,  H01L51/524 ,  H01L2251/558

Abstract: An organic light emitting diode device includes: a first substrate; a first electrode on the first substrate; an organic light emitting layer on the first electrode; a second electrode on the organic light emitting layer; and a capping layer on the second electrode. The capping layer may include at least one high refractive-index layer and at least two low refractive-index layers having thicknesses different from each other.