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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 9923151 B1

PDFFull Text
Date of Patent:
Mar. 20, 2018

Filed:

Dec. 26, 2011

Material for organic electroluminescent elements, and organic electroluminescent element using same

Applicant:

Masaki Numata, Chiba, JP;

Inventor:

Masaki Numata, Chiba, JP;

Assignee:

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

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Gregory D Clark

Int. Cl.
CPC ...
H01L 51/50 (2006.01); H01L 51/00 (2006.01); C09K 11/06 (2006.01); C07D 471/04 (2006.01); C07D 491/044 (2006.01); C07D 495/04 (2006.01); C07D 519/00 (2006.01); C07F 7/08 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0072 (2013.01); C07D 471/04 (2013.01); C07D 491/044 (2013.01); C07D 495/04 (2013.01); C07D 519/00 (2013.01); C07F 7/0814 (2013.01); C09K 11/06 (2013.01); H01L 51/0071 (2013.01); H01L 51/0073 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/1088 (2013.01); C09K 2211/1092 (2013.01); H01L 51/0085 (2013.01); H01L 51/5016 (2013.01); H01L 51/5056 (2013.01); H01L 51/5072 (2013.01);
Abstract

A material for organic electroluminescence device having a specific structure, in which an aromatic ring of a dibenzofuran skeleton, a carbazole skeleton, or a dibenzothiophene skeleton has a nitrogen atom as a heteroatom, and an organic electroluminescence device including an organic thin film layer which includes one or more layers between a cathode and an anode. The organic thin film layer includes a light emitting layer which includes a phosphorescent emitting material. At least one layer of the organic thin film layer includes the material for organic electroluminescence device. The organic EL device employing the material for organic EL device has a high external quantum efficiency even when driving the device at low voltage and also has a long lifetime.

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