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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 11997858 B1

PDFFull Text
Date of Patent:
May. 28, 2024

Filed:

Dec. 31, 2020

Organic el device as well as display apparatus, image pickup apparatus, communication apparatus, lighting apparatus, luminaire, and moving body each including the same

Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventors:

Hirokazu Miyashita, Kanagawa, JP;

Itaru Takaya, Kanagawa, JP;

Takayuki Ito, Kanagawa, JP;

Moe Takahira, Kyoto, JP;

Tomona Yamaguchi, Tokyo, JP;

Satoru Shiobara, Kanagawa, JP;

Tomokazu Kotake, Tokyo, JP;

Haruna Iida, Tokyo, JP;

Naoki Yamada, Tokyo, JP;

Jun Kamatani, Tokyo, JP;

Assignee:

CANON KABUSHIKI KAISHA, Tokyo, JP;

Attorney:

CANON U.S.A., INC. IP Division

Primary Examiner:

Karen Kusumakar

Assistant Examiner:

Shawn Shaw Muslim

Int. Cl.
CPC ...
H10K 50/11 (2023.01); F21S 43/145 (2018.01); H04N 23/53 (2023.01); H10K 50/13 (2023.01); H10K 50/19 (2023.01); H10K 59/12 (2023.01); H10K 77/10 (2023.01); H10K 85/60 (2023.01); H10K 101/30 (2023.01); H10K 101/40 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 50/11 (2023.02); F21S 43/145 (2018.01); H04N 23/53 (2023.01); H10K 50/131 (2023.02); H10K 50/19 (2023.02); H10K 59/12 (2023.02); H10K 77/111 (2023.02); H10K 85/622 (2023.02); H10K 85/623 (2023.02); H10K 85/624 (2023.02); H10K 85/626 (2023.02); H10K 85/633 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02); H10K 2102/311 (2023.02);
Abstract

An organic EL device includes at least an anode, a first light-emitting layer, an intermediate layer, a second light-emitting layer, and a cathode in this order. The intermediate layer is adjacent to the first light-emitting layer and the second light-emitting layer. The first light-emitting layer and the second light-emitting layer can trap electrons. A material constituting the intermediate layer is a hydrocarbon that has a HOMO level equal to or lower than the HOMO level of a host of the first light-emitting layer and that has a high Slevel.

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