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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 11925114 B1

PDFFull Text
Date of Patent:
Mar. 05, 2024

Filed:

Oct. 18, 2017

Indenocarbazole compound and organic electroluminescence device

Applicant:

Hodogaya Chemical Co., Ltd., Tokyo, JP;

Inventors:

Takehiro Takahashi, Tokyo, JP;

Hideyoshi Kitahara, Tokyo, JP;

Junichi Izumida, Tokyo, JP;

Assignee:

HODOGAYA CHEMICAL CO., LTD., Tokyo, JP;

Attorney:

Saliwanchik, Lloyd & Eisenschenk

Primary Examiner:

Michael Y Sun

Int. Cl.
CPC ...
H10K 85/60 (2023.01); C07D 209/94 (2006.01); C07D 405/14 (2006.01); C09K 11/06 (2006.01); H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/17 (2023.01); H10K 50/18 (2023.01); H10K 101/10 (2023.01);
U.S. Cl.
CPC ...
H10K 85/6572 (2023.02); C07D 209/94 (2013.01); C07D 405/14 (2013.01); C09K 11/06 (2013.01); H10K 85/6574 (2023.02); C09K 2211/1025 (2013.01); H10K 50/11 (2023.02); H10K 50/15 (2023.02); H10K 50/17 (2023.02); H10K 50/18 (2023.02); H10K 2101/10 (2023.02);
Abstract

The present invention provides an indenocarbazole compound characterized by having hole transporting properties, being used as a constituent material of an organic electroluminescence device, and being represented by the following general formula (1), and an organic electroluminescence device having a pair of electrodes and at least one organic layer sandwiched therebetween is characterized in that the indenocarbazole compound is used as a constituent material of at least one organic layer. The indenocarbazole compound according to the present invention has (1) excellent hole transporting properties, (2) excellent electron blocking properties, (3) a stable thin film state, and excellent heat resistance. The organic electroluminescence device according to the present invention has a high light-emitting efficiency and high brightness.

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