公开(公告)号：US20240172471A1

公开(公告)日：2024-05-23

申请号：US18493930

申请日：2023-10-25

Applicant: Samsung Display Co., Ltd.

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

IPC: H10K50/17 ,  H10K50/16 ,  H10K50/858

CPC classification number: H10K50/171 ,  H10K50/16 ,  H10K50/858

Abstract: Embodiments provide a light-emitting device, an electronic apparatus including the light-emitting device, and an electronic device including the light-emitting device. The light-emitting device includes a first electrode, a second electrode, and an interlayer between the first electrode and the second electrode. The interlayer includes m emission units, and m−1 charge generation unit(s) between adjacent ones of the m emission units, wherein m is an integer of 2 or more. One of the m emission units includes an emission layer, an electron injection layer between the emission layer and the second electrode, and an electron transport layer between the electron injection layer and the emission layer. The electron injection layer includes a mixture of a first metal-containing material and a first metal-free material, and the electron transport layer does not include a lithium-containing material.

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：US20230102974A1

公开(公告)日：2023-03-30

申请号：US17645942

申请日：2021-12-23

Applicant: Samsung Display Co., Ltd.

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

IPC: H01L51/00 ,  C07D471/06 ,  C09K11/06 ,  C07D409/12 ,  C07D403/10 ,  C07D403/14

Abstract: A light-emitting device includes a first emission layer and a second emission layer, wherein the first emission layer includes a first hole-transporting host (HTH1), a first electron-transporting host (ETH1), and a first phosphorescent dopant (G1), and the second emission layer includes a second hole-transporting host (HTH2), a second electron-transporting host (ETH2), and a second phosphorescent dopant (G2). The electron mobility of the ETH1 is faster than the electron mobility of the ETH2, the hole mobility of the HTH2 is faster than the hole mobility of the HTH1, and the HTH1 and/or HTH2 includes deuterium.