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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 10784456 B1

PDFFull Text
Date of Patent:
Sep. 22, 2020

Filed:

May. 30, 2018

Organic electroluminescent unit

Applicant:

Joled Inc., Tokyo, JP;

Inventors:

Kazuhiro Yoneda, Tokyo, JP;

Tatsuya Matsumi, Tokyo, JP;

Noriyuki Matsusue, Tokyo, JP;

Assignee:

JOLED INC., Tokyo, JP;

Attorney:

Hauptman Ham, LLP

Primary Examiner:

Alonzo Chambliss

Int. Cl.
CPC ...
H01L 29/08 (2006.01); H01L 33/00 (2010.01); H01L 31/0203 (2014.01); H01L 21/00 (2006.01); H01L 51/40 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5004 (2013.01); H01L 51/5012 (2013.01); H01L 51/5016 (2013.01); H01L 51/5056 (2013.01); H01L 51/5072 (2013.01); H01L 2251/552 (2013.01);
Abstract

An organic electroluminescent unit is provided with a plurality of organic electroluminescent elements. At least one of the organic electroluminescent elements includes, in order, a first electrode, a hole transport layer, a light-emitting layer, an electron transport layer, and a second electrode. The hole transport layer, the light-emitting layer, and the electron transport layer satisfy the following expressions:Δ(1)≥0 eVΔ(1)=−2×where Erepresents a T1 level of the hole transport layer, Erepresents a T1 level of the electron transport layer, and Erepresents a T1 level of the light-emitting layer.

Find Patent Forward Citations

Yoneda, Kazuhiro. (2020). Organic electroluminescent unit (U.S. Patent No. 10784456). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10784456

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