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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 10135000 B1

PDFFull Text
Date of Patent:
Nov. 20, 2018

Filed:

Mar. 25, 2015

Organic electroluminescent element and electronic device

Applicant:

Idemitsu Kosan Co., Ltd., Tokyo, JP;

Inventors:

Kazuki Nishimura, Sodegaura, JP;

Hiroyuki Saito, Sodegaura, JP;

Assignee:

IDEMITSU KOSAN CO., LTD., Tokyo, JP;

Attorney:

Foley & Lardner LLP

Primary Examiner:

Dawn L Garrett

Int. Cl.
CPC ...
H01L 51/00 (2006.01); C09K 11/06 (2006.01); C09K 11/02 (2006.01); C07C 13/66 (2006.01); H01L 51/50 (2006.01); H05B 33/14 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0058 (2013.01); C07C 13/66 (2013.01); C09K 11/025 (2013.01); C09K 11/06 (2013.01); H01L 51/006 (2013.01); H01L 51/0052 (2013.01); H01L 51/0054 (2013.01); H01L 51/0061 (2013.01); H01L 51/0073 (2013.01); H01L 51/5004 (2013.01); H01L 51/5024 (2013.01); H05B 33/14 (2013.01); C07C 2603/40 (2017.05); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1022 (2013.01); C09K 2211/1088 (2013.01); H01L 51/5016 (2013.01); H01L 51/5028 (2013.01); H01L 51/5056 (2013.01); H01L 51/5072 (2013.01);
Abstract

An organic electroluminescence device includes an anode, a cathode, and an emitting layer, in which the emitting layer contains a first compound, a second compound, and a third compound, a singlet energy S(M1) of the first compound and a singlet energy S(M2) of the second compound satisfy a numerical formula (Numerical Formula 1) below, an electron affinity Af(M1) of the first compound and an electron affinity Af(M2) of the second compound satisfy a numerical formula (Numerical Formula 2) below, and a triplet energy T(M1) of the first compound satisfies a numerical formula (Numerical Formula 3) below,(2)≥(1)×0.95  (Numerical Formula 1)(2)−(1)≥0.2  (Numerical Formula 2)(1)≤2.0  (Numerical Formula 3).

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