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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 12144252 B1

PDFFull Text
Date of Patent:
Nov. 12, 2024

Filed:

Jul. 01, 2021

Organic electroluminescence device

Applicant:

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

Inventors:

Jiyoung Lee, Hwaseong-si, KR;

Hyosup Shin, Hwaseong-si, KR;

Minje Kim, Suwon-si, KR;

Hyojeong Kim, Hwaseong-si, KR;

Assignee:

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

Attorney:

Lewis Roca Rothgerber Christie LLP

Primary Examiner:

Gregory D Clark

Int. Cl.
CPC ...
H01L 51/50 (2006.01); C09K 11/06 (2006.01); H10K 85/40 (2023.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 50/12 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01);
U.S. Cl.
CPC ...
H10K 85/6572 (2023.02); C09K 11/06 (2013.01); H10K 85/40 (2023.02); H10K 85/631 (2023.02); H10K 85/6574 (2023.02); C09K 2211/1007 (2013.01); C09K 2211/1018 (2013.01); H10K 50/11 (2023.02); H10K 50/121 (2023.02); H10K 2101/10 (2023.02); H10K 2101/90 (2023.02);
Abstract

An organic electroluminescence device includes a first electrode, a second electrode facing the first electrode, and an emission layer between the first electrode and the second electrode, wherein the emission layer includes a first host, a first dopant, and a second dopant different from the first dopant, the first dopant and the second dopant are compounds each independently exhibiting thermally activated delayed fluorescence, the first dopant has a delayed fluorescence lifetime (τ) value of about 2.6 μs to about 5.0 μs, and the first host, the first dopant, and the second dopant satisfy Equation 1 defined in the detailed description, thereby exhibiting increased efficiency and lifetime characteristics.

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