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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 12588355 B1

PDFFull Text
Date of Patent:
Mar. 24, 2026

Filed:

Jul. 26, 2022

Organic light-emitting element, display apparatus, photoelectric conversion apparatus, electronic equipment, lighting apparatus, moving body, and exposure light source

Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventors:

Hironobu Iwawaki, Kanagawa, JP;

Jun Kamatani, Tokyo, JP;

Naoki Yamada, Tokyo, JP;

Yosuke Nishide, Kanagawa, JP;

Hirokazu Miyashita, Kanagawa, JP;

Assignee:

Canon Kabushiki Kaisha, Tokyo, JP;

Attorney:

Canon U.S.A., Inc. IP Division

Primary Examiner:

Robert S Loewe

Int. Cl.
CPC ...
H10K 50/12 (2023.01); C07F 15/00 (2006.01); H10K 50/11 (2023.01); H10K 59/38 (2023.01); H10K 59/60 (2023.01); H10K 59/65 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); H10K 101/40 (2023.01);
U.S. Cl.
CPC ...
H10K 50/12 (2023.02); C07F 15/0033 (2013.01); H10K 50/11 (2023.02); H10K 59/38 (2023.02); H10K 59/60 (2023.02); H10K 59/65 (2023.02); H10K 85/342 (2023.02); H10K 85/361 (2023.02); H10K 85/615 (2023.02); H10K 85/622 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); C07B 2200/05 (2013.01); H10K 2101/40 (2023.02);
Abstract

A organic light-emitting element including a positive electrode, a light-emitting layer, and a negative electrode in this order, wherein the light-emitting layer contains a dopant material, a host material, and an assist material, the dopant material is a compound represented by the following general formula [1], the host material is a hydrocarbon compound, and the assist material has a lower LUMO level than the host material. In the formula [1], Rto Rdenote a hydrogen atom, an alkyl group, or the like. X denotes O or S. m denotes an integer in the range of 1 to 3, and n denotes an integer in the range of 0 to 2, provided that m+n is 3. The partial structure IrLis any one of structures represented by the following formulae [2] and [3], wherein Rto Rdenote a hydrogen atom, an alkyl group, or the like.

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