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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 12641997 B1

PDFFull Text
Date of Patent:
May. 26, 2026

Filed:

Apr. 15, 2021

Light-emitting device and electronic apparatus including same

Applicant:

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

Inventors:

Dongseob Jeong, Yongin-si, KR;

Eungyoung Park, Yongin-si, KR;

Jiyoung Song, Yongin-si, KR;

Jimyoung Ye, Yongin-si, KR;

Assignee:

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

Attorney:

Womble Bond Dickinson (US) LLP

Primary Examiner:

Ermias T Woldegeorgis

Int. Cl.
CPC ...
H01L 51/00 (2006.01); H10K 85/40 (2023.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 101/10 (2023.01); H10K 101/20 (2023.01);
U.S. Cl.
CPC ...
H10K 85/622 (2023.02); H10K 85/40 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 85/658 (2023.02); H10K 50/11 (2023.02); H10K 2101/10 (2023.02); H10K 2101/20 (2023.02);
Abstract

A light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an interlayer located between the first electrode and the second electrode and including an emission layer stack, wherein the emission layer stack includes a first emission layer including a first thermally activated delayed fluorescence (TADF) dopant and a second emission layer including a second TADF dopant, the first TADF dopant and the second TADF dopant are different compounds, and the first emission layer contacts the second emission layer.

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