公开(公告)号：US20240147752A1

公开(公告)日：2024-05-02

申请号：US18476056

申请日：2023-09-27

Applicant: Samsung Display Co., Ltd.

Inventor： Hyangki Sung ,  Dalho Kim ,  Jongseok Han ,  Eunji Park ,  Heeseong Jeong

IPC: H10K50/17

CPC classification number: H10K50/171 ,  H10K2102/351

Abstract: Provided is a light-emitting device including a first electrode, a second electrode facing the first electrode, an emission layer between the first electrode and the second electrode, and an electron transport region between the emission layer and the second electrode, wherein the electron transport region includes an electron injection layer including a first material and a second material, the first material and the second material each independently include an alkali metal, an alkaline earth metal, a transition metal, a post-transition metal, a lanthanide metal, or a combination thereof, the second material does not include Mg, the first material and the second material are different from each other, and a surface energy of the second material is greater than a surface energy of the first material.

公开(公告)号：US20230380205A1

公开(公告)日：2023-11-23

申请号：US18316832

申请日：2023-05-12

Applicant: Samsung Display Co., Ltd.

Inventor： Jongseok Han ,  Dalho Kim ,  Illsoo Park ,  Heeseong Jeong ,  Jaehong Kim ,  Hyomin Kim ,  Eunji Park ,  Sijin Sung

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

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

Abstract: A light-emitting device includes: a first electrode; a second electrode facing the first electrode; an emission layer located between the first electrode and the second electrode; and an electron transport region located between the second electrode and the emission layer, wherein the electron transport region includes an electron injection layer including a first material and a second material, the first material and the second material each independently include an alkali metal, an alkaline earth metal, a rare earth metal, or any combination thereof, each of the first material and the second material does not include any halide of the alkali metal, and the first material and the second material are different from each other.