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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 11730052 B1

PDFFull Text
Date of Patent:
Aug. 15, 2023

Filed:

Mar. 18, 2014

Light-emitting device

Applicant:

Idemitsu Kosan Co., Ltd., Tokyo, JP;

Inventors:

Toshinari Ogiwara, Sodegaura, JP;

Yoshikazu Tanaka, Sodegaura, JP;

Keiji Okinaka, Sodegaura, JP;

Assignee:

Idemitsu Kosan Co., Ltd., Tokyo, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Jay Yang

Int. Cl.
CPC ...
H01L 51/00 (2006.01); H01L 51/50 (2006.01); H01L 27/32 (2006.01); H10K 85/30 (2023.01); C07D 413/10 (2006.01); C07D 487/04 (2006.01); C09K 11/06 (2006.01); C07D 403/14 (2006.01); C07D 209/86 (2006.01); H10K 50/11 (2023.01); H10K 50/13 (2023.01); H10K 59/38 (2023.01); H10K 85/60 (2023.01); H10K 101/10 (2023.01); H10K 101/40 (2023.01); H10K 101/30 (2023.01);
U.S. Cl.
CPC ...
H10K 85/342 (2023.02); C07D 209/86 (2013.01); C07D 403/14 (2013.01); C07D 413/10 (2013.01); C07D 487/04 (2013.01); C09K 11/06 (2013.01); H10K 50/11 (2023.02); H10K 50/13 (2023.02); H10K 59/38 (2023.02); H10K 85/649 (2023.02); C09K 2211/185 (2013.01); H10K 85/631 (2023.02); H10K 85/633 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 2101/10 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02);
Abstract

A light-emitting apparatus includes an organic electroluminescence device, a first color conversion portion that transmits a first color light, and a second color conversion portion that transmits a second color light. The organic electroluminescence device includes an anode, a cathode, and one or more organic layers interposed between the anode and the cathode. At least one of the organic layer(s) is an emitting layer including a host material and a dopant material that emits light including the first color light and the second color light. A difference ΔST(D) between singlet energy EgS(D) of the dopant material and an energy gap Eg(D) at 77K of the dopant material satisfies Numerical Formula 1 below,Δ()=()−77()<0.3 (eV)  (Numerical Formula 1).

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