公开(公告)号：US20230180493A1

公开(公告)日：2023-06-08

申请号：US18075282

申请日：2022-12-05

Applicant: Samsung Display Co., Ltd.

Inventor： Eunhye Song ,  Jinwon Sun ,  Dongchan Lee ,  Jonghyeon Lee ,  Pyungeun Jeon

IPC: H10K50/11 ,  H10K50/155 ,  H10K50/18

CPC classification number: H01L51/5004 ,  H01L51/506 ,  H01L51/5096 ,  H01L2251/5384

Abstract: A light-emitting device includes an interlayer that includes a first hole transport layer, a second hole transport layer, and a third hole transport layer, wherein the first hole transport layer includes a first hole transport compound and a first p-dopant compound, the second hole transport layer includes a second hole transport compound and a second p-dopant compound, the third hole transport layer includes a third hole transport compound and does not include a p-dopant, and an absolute value of lowest unoccupied molecular orbital (LUMO) energy of the second p-dopant compound is greater than an absolute value of LUMO energy of the first p-dopant compound.

公开(公告)号：US20230217817A1

公开(公告)日：2023-07-06

申请号：US18150053

申请日：2023-01-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dongchan Lee ,  Jinwon Sun ,  Eunhye Song ,  Jonghyeon Lee ,  Pyungeun Jeon ,  Changwoong Chu

IPC: H10K85/60 ,  H10K85/30 ,  C09K11/06

CPC classification number: H10K85/654 ,  C09K11/06 ,  H10K85/346 ,  H10K85/6572 ,  H10K50/166

Abstract: A light-emitting device includes an electron transport region including a first electron transport layer and a second electron transport layer. The first electron transport layer includes a first compound, the second electron transport layer includes a second compound, the first compound includes a pyrimidine group, the second compound includes a triazine group, and an absolute value of a lowest unoccupied molecular orbital (LUMO) energy of the first compound (ELUMO_E1) is less than an absolute value of a LUMO energy of the second compound (ELUMO_E2). An electronic apparatus including the light-emitting device.

公开(公告)号：US11647669B2

公开(公告)日：2023-05-09

申请号：US16883251

申请日：2020-05-26

Applicant: Samsung Display Co., Ltd.

Inventor： Heejoo Ko ,  Eunhye Song ,  Jonghyeon Lee ,  Hangeul Lee

IPC: H01L51/50 ,  H01L51/00 ,  C07F7/08 ,  H01L51/56

CPC classification number: H01L51/0094 ,  C07F7/0812 ,  H01L51/001 ,  H01L51/5004 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5072 ,  H01L51/5096 ,  H01L51/56 ,  H01L2251/552 ,  H01L2251/558

Abstract: A heterocyclic compound represented by Formula 1 and an organic light-emitting device including the same are provided, wherein the substituents in Formula 1 are the same as defined in the detailed descriptions.

公开(公告)号：US20210184135A1

公开(公告)日：2021-06-17

申请号：US16987332

申请日：2020-08-06

Applicant: Samsung Display Co., Ltd.

Inventor： Minkyung Kim ,  Heejoo Ko ,  Jonghyeon Lee ,  Hangeul Lee

IPC: H01L51/00 ,  H01L27/32 ,  C07D409/14 ,  C09K11/06 ,  C07D495/04 ,  C07F15/00

Abstract: An organic light-emitting device includes: a first electrode; a second electrode; and an organic layer disposed between the first electrode and the second electrode, the organic layer having a first emission layer, a second emission layer disposed between the first emission layer and the second electrode, and at least one auxiliary layer, having a first host or a second host, the first emission layer may include a first host, a second host, and a first dopant; and the second emission layer may include a first host, a second host, and a second dopant; wherein the first host is a hole transport host, and the second host may include at least one of an electron transport host and a bipolar host; the first dopant and the second dopant, each may include, independently from one another, at least one of a phosphorescent organometallic compound and a thermally activated delayed fluorescence (“TADF”) compound satisfying Equation 1 as defined herein.