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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 12167619 B1

PDFFull Text
Date of Patent:
Dec. 10, 2024

Filed:

Jul. 20, 2021

Organic electro luminescence device and display device including the same

Applicant:

Samsung Display Co., Ltd., Yongin-si, KR;

Inventors:

Hyomin Ko, Suwon-si, KR;

Ilsoo Oh, Seoul, KR;

Assignee:

SAMSUNG DISPLAY CO., LTD., Yongin-si, KR;

Attorney:

KILE PARK REED & HOUTTEMAN PLLC

Primary Examiner:

Robert S Loewe

Int. Cl.
CPC ...
H10K 50/15 (2023.01); H10K 50/11 (2023.01); H10K 50/852 (2023.01); H10K 59/12 (2023.01); H10K 59/35 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); H10K 101/40 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 50/156 (2023.02); H10K 50/11 (2023.02); H10K 50/852 (2023.02); H10K 59/12 (2023.02); H10K 59/35 (2023.02); H10K 85/342 (2023.02); H10K 85/615 (2023.02); H10K 85/624 (2023.02); H10K 85/631 (2023.02); H10K 85/636 (2023.02); H10K 85/656 (2023.02); H10K 85/6565 (2023.02); H10K 85/6572 (2023.02); H10K 2101/40 (2023.02); H10K 2102/351 (2023.02);
Abstract

Provided is an organic electroluminescence device including a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region. The hole transport region includes a first hole transport layer disposed adjacent to the first electrode, the first hole transport layer including a first organic compound having a first dielectric constant and a second hole transport layer disposed between the first hole transport layer and the emission layer, the second hole transport layer including a second organic having a second dielectric constant which is greater than the first dielectric constant.

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