公开(公告)号：US11127912B2

公开(公告)日：2021-09-21

申请号：US16512954

申请日：2019-07-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hongkyu Seo ,  Moon Gyu Han ,  Eun Joo Jang ,  Sujin Park ,  Dae Young Chung

IPC: H01L51/50 ,  H01L33/50 ,  H01L51/44

Abstract: A light emitting device including a first electrode and a second electrode facing each other, an emission layer disposed between the first electrode and the second electrode, the emission layer including quantum dots, and an electron auxiliary layer disposed between the emission layer and the second electrode, the electron auxiliary layer including nanoparticles and a small molecule organic compound and a display device including the same. The nanoparticles include a metal oxide including zinc, and an electron mobility of the small molecule organic compound is less than an electron mobility of the nanoparticles.

公开(公告)号：US11005060B2

公开(公告)日：2021-05-11

申请号：US16356148

申请日：2019-03-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dae Young Chung ,  Moon Gyu Han ,  Oul Cho ,  Tae Hyung Kim ,  Sujin Park ,  Hongkyu Seo ,  Eun Joo Jang

IPC: H01L51/50 ,  H01L51/00 ,  H01L51/56 ,  H01L33/06 ,  H01L33/08 ,  H01L27/32

Abstract: An electroluminescent device including a first electrode, a hole transport layer disposed on the first electrode, a first emission layer disposed on the hole transport layer, the first emission layer including a first light emitting particle on which a first ligand having a hole transporting property is attached, a second emission layer disposed on the first emission layer, the second emission layer including a second light emitting particle on which a second ligand having an electron transporting property is attached, an electron transport layer disposed on the second emission layer, and a second electrode disposed on the electron transport layer, wherein a solubility of the first ligand in a solvent is different than a solubility of the second ligand in the solvent and a display device including the same.