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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 11744144 B1

PDFFull Text
Date of Patent:
Aug. 29, 2023

Filed:

May. 06, 2019

Organic electroluminescent element, light-emitting material therefor, light emitting device, display device, and illumination device

Applicant:

Udc Ireland Limited, Dublin, IE;

Inventors:

Toru Watanabe, Kanagawa, JP;

Yuki Hirai, Kanagawa, JP;

Tianhua Ouyang, Kanagawa, JP;

Koji Takaku, Kanagawa, JP;

Wataru Sotoyama, Kanagawa, JP;

Tetsu Kitamura, Kanagawa, JP;

Yasunori Yonekuta, Kanagawa, JP;

Assignee:

UDC Ireland Limited, Dublin, IE;

Attorney:

Riverside Law LLP

Primary Examiner:

Dawn L Garrett

Int. Cl.
CPC ...
H10K 85/60 (2023.01); C09B 3/78 (2006.01); C09B 57/00 (2006.01); C09K 11/06 (2006.01); H05B 33/10 (2006.01); H10K 59/00 (2023.01); H10K 50/11 (2023.01); H10K 101/10 (2023.01);
U.S. Cl.
CPC ...
H10K 85/624 (2023.02); C09B 3/78 (2013.01); C09B 57/001 (2013.01); C09B 57/008 (2013.01); C09K 11/06 (2013.01); H05B 33/10 (2013.01); H10K 59/00 (2023.02); H10K 85/60 (2023.02); H10K 85/633 (2023.02); H10K 85/653 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/1044 (2013.01); C09K 2211/1059 (2013.01); C09K 2211/1088 (2013.01); C09K 2211/1092 (2013.01); H10K 50/11 (2023.02); H10K 2101/10 (2023.02);
Abstract

An organic electroluminescent element including a luminescent compound represented by the following formula (in which Rto Reach independently represent a hydrogen atom, a deuterium atom, an alkyl group, an aryl group, a heteroaryl group, a fluorine atom, a cyano group, an amino group, an alkoxy group, an aryloxy group, a thio group, or a silyl group, and 8 to 13 groups out of Rto Reach represent a hydrogen atom or a deuterium atom) in a light emitting layer has high durability and excellent chromaticity.

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