公开(公告)号：US11710448B2

公开(公告)日：2023-07-25

申请号：US17578173

申请日：2022-01-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Oul Cho ,  Tae Hyung Kim ,  Ilyoung Lee ,  Eun Joo Jang ,  Won Sik Yoon

IPC: G09G3/32 ,  H10K50/115

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/043 ,  H10K50/115

Abstract: A light emitting element includes a first electrode, a second electrode, and a light emission layer interposed between the first electrode and the second electrode, where an emission efficiency of the light emission layer varies based on a voltage applied to at least one selected from the first electrode and the second electrode.

公开(公告)号：US12225746B2

公开(公告)日：2025-02-11

申请号：US17515652

申请日：2021-11-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hyo Sook Jang ,  Eun Joo Jang ,  Ilyoung Lee ,  Tae Ho Kim ,  Kun Su Park ,  Jun-Mo Yoo

IPC: H10K50/115 ,  B82Y20/00 ,  B82Y40/00 ,  C09K11/88 ,  H10K85/30

Abstract: A light emitting device and a production method thereof. The light emitting device includes a light emitting layer including a plurality of quantum dots, and an electron auxiliary layer disposed on the light emitting layer, the electron auxiliary layer configured to transport electrons, inject electrons into the light emitting layer, or a combination thereof, wherein the electron auxiliary layer includes a plurality of metal oxide nanoparticles and a nitrogen-containing metal complex. The metal oxide nanoparticles include zinc and optionally a dopant metal, the dopant metal includes Mg, Co, Ga, Ca, Zr, W, Li, Ti, Y, Al, Co, or a combination thereof and a mole ratio of nitrogen to zinc in the electron auxiliary layer is greater than or equal to about 0.001:1.