公开(公告)号：US11744096B2

公开(公告)日：2023-08-29

申请号：US17671970

申请日：2022-02-15

Applicant: SAMSUNG ELECTRONICS CO., LTD

Inventor： Dae Young Chung ,  Kwanghee Kim ,  Eun Joo Jang ,  Tae Hyung Kim ,  Hongkyu Seo ,  Heejae Lee ,  Jaejun Chang

IPC: H01L51/50 ,  H10K50/115 ,  H10K50/13 ,  H10K71/00 ,  H10K71/15 ,  H10K71/40 ,  H10K101/30 ,  H10K102/00

CPC classification number: H10K50/115 ,  H10K50/13 ,  H10K71/00 ,  H10K71/15 ,  H10K71/441 ,  H10K2101/30 ,  H10K2102/351

Abstract: A light emitting device including a first electrode and a second electrode, and an emission layer disposed between the first electrode and the second electrode and including quantum dots, a first charge auxiliary layer disposed between the emission layer and the first electrode, and a second charge auxiliary layer disposed between the emission layer and the second electrode, wherein the emission layer comprises a first emission layer contacting the first charge auxiliary layer, a second emission layer disposed on the first emission layer, and a third emission layer disposed on the second emission layer. The hole mobility of the first emission layer decreases sequentially from the first emission layer to the third emission layer.

公开(公告)号：US11495764B2

公开(公告)日：2022-11-08

申请号：US17026622

申请日：2020-09-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tae Ho Kim ,  Moon Gyu Han ,  Hongkyu Seo ,  Heejae Lee ,  Eun Joo Jang

IPC: H01L51/50 ,  C09K11/06 ,  H01L51/00

Abstract: An electroluminescent device and a display device including the same are disclosed, wherein the electroluminescent device includes a first electrode; a hole transport layer disposed on the first electrode; a light emitting layer including a first light emitting layer disposed on the hole transport layer, the first emitting layer including a first quantum dot, and a second light emitting layer including a second quantum dot and an n-type organic semiconductor, the second light emitting layer disposed on the first light emitting layer; an electron transport layer disposed on the second light emitting layer; and a second electrode disposed on the electron transport layer.