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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 12376458 B1

PDFFull Text
Date of Patent:
Jul. 29, 2025

Filed:

Nov. 18, 2021

Organic el element, organic el panel, and organic el element manufacturing method

Applicant:

Jdi Design and Development G.k., Tokyo, JP;

Inventors:

Toshiyuki Akiyama, Tokyo, JP;

Shinichiro Ishino, Tokyo, JP;

Yasuhiro Sekimoto, Tokyo, JP;

Muneharu Sato, Tokyo, JP;

Takeshi Kamiya, Tokyo, JP;

Tomohiko Oda, Tokyo, JP;

Mineki Hasegawa, Tokyo, JP;

Masakazu Takata, Tokyo, JP;

Assignee:

JDI DESIGN AND DEVELOPMENT G.K., Tokyo, JP;

Attorney:

XSENSUS LLP

Primary Examiner:

Jenna N Chandhok

Int. Cl.
CPC ...
H10K 59/122 (2023.01); H10K 50/11 (2023.01); H10K 50/818 (2023.01); H10K 59/80 (2023.01); H10K 71/00 (2023.01); H10K 101/10 (2023.01); H10K 101/40 (2023.01); H10K 102/10 (2023.01);
U.S. Cl.
CPC ...
H10K 59/122 (2023.02); H10K 50/11 (2023.02); H10K 50/818 (2023.02); H10K 59/80518 (2023.02); H10K 59/876 (2023.02); H10K 71/00 (2023.02); H10K 2101/10 (2023.02); H10K 2101/40 (2023.02); H10K 2102/102 (2023.02); H10K 2102/103 (2023.02);
Abstract

An organic EL element including an anode, a first functional layer including organic material, disposed above the anode, a second functional layer including organic material, disposed on and in contact with the first functional layer, a light emitting layer disposed on and in contact with the second functional layer, and a cathode disposed above the light emitting layer. A highest occupied molecular orbital (HOMO) level of the organic material of the second functional layer has an energy level at least 0.2 eV lower than that of a HOMO level of the organic material of the first functional layer, and film thickness of the second functional layer is 15 nm or less.

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