公开(公告)号：US20230320120A1

公开(公告)日：2023-10-05

申请号：US18102169

申请日：2023-01-27

Applicant: Samsung Display Co., Ltd.

Inventor： Jongwon Lee ,  Seungcheol Kim ,  Changmin Lee ,  Hyunshik Lee

IPC: H10K50/13

CPC classification number: H10K50/131 ,  H10K59/12

Abstract: Embodiments provide 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, m light-emitting units stacked between the first electrode and the second electrode, and m-1 charge generation layers between adjacent ones of the light-emitting. Each light-emitting unit includes an emission layer; the m light-emitting units include a first light-emitting unit, a second light-emitting unit, a third light-emitting unit, a fourth light-emitting unit, and a fifth light-emitting unit; the m−1 charge generation layers include a first charge generation layer, a second charge generation layer, a third charge generation layer, and a fourth charge generation layer; the first light-emitting unit and the second light-emitting unit each emit green light; and the third light-emitting unit, the fourth light-emitting unit, and the fifth light-emitting unit each emit blue light.

公开(公告)号：US20230225204A1

公开(公告)日：2023-07-13

申请号：US18095367

申请日：2023-01-10

Applicant: Samsung Display Co., Ltd.

Inventor： Jongwon Lee ,  Seungcheol Kim ,  Changmin Lee ,  Hyunshik Lee

IPC: H10K85/60

CPC classification number: H10K85/6572 ,  H10K50/181

Abstract: A light-emitting device includes: a first electrode; a second electrode facing the first electrode; an interlayer arranged between the first electrode and the second electrode and including an emission layer; and a hole transport region arranged between the first electrode and the emission layer, wherein the hole transport region includes an electron blocking layer, and the electron blocking layer includes a heterocyclic compound represented by Formula 1.

公开(公告)号：US20240237391A1

公开(公告)日：2024-07-11

申请号：US18360048

申请日：2023-07-27

Applicant: Samsung Display Co., Ltd.

Inventor： Jongwon Lee ,  Seungcheol Kim ,  Heungsu Park ,  Changmin Lee ,  Hyunshik Lee

IPC: H10K50/19 ,  H10K50/13

CPC classification number: H10K50/19 ,  H10K50/131 ,  H10K2102/351

Abstract: A tandem light-emitting device including a first electrode, a second electrode facing the first electrode, m light-emitting units stacked between the first electrode and the second electrode, the m light-emitting units each including an emission layer, and m−1 charge generation layers between two adjacent light-emitting units of the m light-emitting units. M is an integer of 5 or more. The m light-emitting units include first to fifth light-emitting units, in order of proximity to the first electrode. The m−1 charge generation layers include first to fourth charge generation layers, in order of proximity to the first electrode. At least one of the first to fifth light-emitting units emits blue light. At least one of the first to fifth light-emitting units emits green light. The formula 3≤D/(2*λb)≤ 4 is satisfied.

公开(公告)号：US20230113852A1

公开(公告)日：2023-04-13

申请号：US17722378

申请日：2022-04-17

Applicant: Samsung Display Co., Ltd.

Inventor： Jongwon LEE ,  Seungcheol Kim ,  Heungsu Park ,  Changmin Lee ,  Hyunshik Lee

IPC: H01L51/50 ,  H01L51/00

Abstract: A light-emitting device including: m emitting units located between a first electrode and a second electrode; and m−1 charge generation units, each located between two neighboring emitting units among the m emitting units and including an n-type charge generation layer and a p-type charge generation layer. The m emitting units may each include an emission layer, at least one of the m emission layers comprises a first emission layer and a second emission layer that are in contact with each other, the first emission layer includes a first host, a second host, and a first dopant, the second emission layer includes a third host, a fourth host, and a second dopant, the first host and the second host form a first exciplex, the third host and the fourth host form a second exciplex, and the first dopant is a delayed fluorescence dopant, and the second dopant is a phosphorescent dopant.