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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 12289987 B1

PDFFull Text
Date of Patent:
Apr. 29, 2025

Filed:

Jul. 21, 2020

Organic light-emitting device and apparatus including the same

Applicant:

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

Inventors:

Jaeweon Hur, Yongin-si, KR;

Kyungsik Kim, Yongin-si, KR;

Sungwook Kim, Yongin-si, KR;

Seulong Kim, Yongin-si, KR;

Seungjin Chu, Yongin-si, KR;

Hyein Jeong, Yongin-si, KR;

Assignee:

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

Attorney:

Lewis Roca Rothgerber Christie LLP

Primary Examiner:

Seokmin Jeon

Int. Cl.
CPC ...
H10K 85/60 (2022.12); C07D 209/88 (2005.12); C07F 7/08 (2005.12); H10K 50/15 (2022.12); H10K 50/17 (2022.12); H10K 50/18 (2022.12); H10K 85/40 (2022.12); H10K 101/30 (2022.12); H10K 101/40 (2022.12);
U.S. Cl.
CPC ...
H10K 85/633 (2023.01); C07D 209/88 (2012.12); C07F 7/0812 (2012.12); H10K 85/40 (2023.01); H10K 85/636 (2023.01); H10K 50/15 (2023.01); H10K 50/17 (2023.01); H10K 50/18 (2023.01); H10K 85/624 (2023.01); H10K 85/626 (2023.01); H10K 85/6572 (2023.01); H10K 2101/30 (2023.01); H10K 2101/40 (2023.01);
Abstract

An organic light-emitting device in which a hole transport region includes a first hole transport stack, a second hole transport stack between the first hole transport stack and an emission layer, and an electron blocking layer between the second hole transport stack and the emission layer, wherein a HOMO energy level of the hole transport region satisfies a certain equations. The organic light-emitting devices according to embodiments of the present disclosure may have high efficiency and a long lifespan.

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