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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11737301 B1

PDFFull Text
Date of Patent:
Aug. 22, 2023

Filed:

Apr. 09, 2021

Electroluminescent device, and display device comprising thereof

Applicant:

Samsung Electronics Co., Ltd., Suwon-si, KR;

Inventors:

Dae Young Chung, Suwon-si, KR;

Moon Gyu Han, Suwon-si, KR;

Oul Cho, Suwon-si, KR;

Tae Hyung Kim, Seoul, KR;

Sujin Park, Seoul, KR;

Hongkyu Seo, Anyang-si, KR;

Eun Joo Jang, Suwon-si, KR;

Assignee:

SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-do, KR;

Attorney:

Cantor Colburn LLP

Primary Examiner:

Gregory D Clark

Int. Cl.
CPC ...
H10K 50/19 (2023.01); C09K 11/06 (2006.01); C09K 11/02 (2006.01); H10K 50/115 (2023.01); H10K 71/00 (2023.01); H10K 71/15 (2023.01); H10K 85/10 (2023.01); H10K 85/60 (2023.01);
U.S. Cl.
CPC ...
H10K 50/19 (2023.02); C09K 11/025 (2013.01); C09K 11/06 (2013.01); H10K 50/115 (2023.02); H10K 71/00 (2023.02); H10K 71/15 (2023.02); C09K 2211/10 (2013.01); H10K 85/111 (2023.02); H10K 85/115 (2023.02); H10K 85/1135 (2023.02); H10K 85/626 (2023.02);
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 and a second ligand having a hole transporting property are attached, a second emission layer disposed on the first emission layer, the second emission layer including a second light emitting particle on which a first ligand and a third ligand having an electron transporting property are 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 second ligand in a solvent is different than a solubility of the third ligand in the solvent and a display device including the same.

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