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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 12200961 B1

PDFFull Text
Date of Patent:
Jan. 14, 2025

Filed:

May. 28, 2019

Organic electroluminescence element, display device, and electronic apparatus

Applicant:

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

Inventors:

Kazuki Nishimura, Sodegaura, JP;

Toshinari Ogiwara, Sodegaura, JP;

Keiji Okinaka, Sodegaura, JP;

Keiichi Yasukawa, Sodegaura, JP;

Assignee:

IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;

Attorney:

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

Primary Examiner:

Mariceli Santiago

Int. Cl.
CPC ...
H10K 50/852 (2023.01); H10K 50/11 (2023.01); H10K 50/18 (2023.01); H10K 50/818 (2023.01); H10K 50/828 (2023.01); H10K 59/35 (2023.01); H10K 71/00 (2023.01); H10K 85/60 (2023.01); H10K 101/30 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 50/852 (2023.02); H10K 50/11 (2023.02); H10K 50/18 (2023.02); H10K 59/35 (2023.02); H10K 71/00 (2023.02); H10K 85/623 (2023.02); H10K 85/633 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 50/818 (2023.02); H10K 50/828 (2023.02); H10K 2101/30 (2023.02); H10K 2102/3026 (2023.02); H10K 2102/351 (2023.02);
Abstract

An organic electroluminescence device including: at least a first pixel and a blue pixel apposed on a substrate, in which the first pixel and the blue pixel each have an anode and a cathode, and the first pixel and the blue pixel have a first emitting layer and a blue emitting layer, respectively; a hole transporting zone provided between the first emitting layer and the anode and between the blue emitting layer and the anode; and an electron transporting zone provided between the first emitting layer and the cathode and between the blue emitting layer and the cathode, in which the first emitting layer includes a delayed fluorescent second compound and a fluorescent first compound capable of emitting light ranging from 500 nm to 660 nm, and the electron transporting zone includes: a first common layer; and an additional layer provided between the first emitting layer and the cathode.

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