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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 12398315 B1

PDFFull Text
Date of Patent:
Aug. 26, 2025

Filed:

Aug. 09, 2019

Organic electroluminescence device

Applicant:

Lg Display Co., Ltd., Seoul, KR;

Inventors:

Sangbeom Kim, Paju-si, KR;

Shinhan Kim, Seoul, KR;

Jeongdae Seo, Incheon, KR;

Inbum Song, Seoul, KR;

Seunghee Yoon, Seoul, KR;

Assignee:

LG Display Co., Ltd., Seoul, KR;

Attorney:

Fish & Richardson P.C.

Primary Examiner:

Dylan C Kershner

Int. Cl.
CPC ...
C09K 11/06 (2006.01); H10K 50/11 (2023.01); H10K 50/19 (2023.01); H10K 59/12 (2023.01); H10K 85/60 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01); H10K 101/20 (2023.01);
U.S. Cl.
CPC ...
C09K 11/06 (2013.01); H10K 85/615 (2023.02); H10K 85/626 (2023.02); H10K 85/657 (2023.02); H10K 85/6572 (2023.02); H10K 85/658 (2023.02); C09K 2211/1037 (2013.01); H10K 50/11 (2023.02); H10K 50/19 (2023.02); H10K 59/12 (2023.02); H10K 2101/10 (2023.02); H10K 2101/20 (2023.02); H10K 2101/90 (2023.02);
Abstract

Disclosed is an organic electroluminescence device. The device includes an anode; a cathode; and a first light-emission layer disposed between the anode and the cathode and configured for emitting blue light. The first light-emission layer comprises a host composition and a blue dopant. The blue dopant includes at least one compound represented by Chemical Formula D. The host composition contains a first host compound and a second host compound. The first host compound has a triplet energy level higher than a triplet energy level of the blue dopant, while the second host compound has a triplet energy level lower than the triplet energy level of the blue dopant. In Chemical Formula D, each of R, R, R, Rand Rindependently is the same as defined in the present specification.

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