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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 8778507 B1

PDFFull Text
Date of Patent:
Jul. 15, 2014

Filed:

Apr. 06, 2006

Organic electroluminescent device, display and illuminating device

Applicants:

Junko Tamura, Tokyo, JP;

Hiroshi Kita, Tokyo, JP;

Eisaku Katoh, Tokyo, JP;

Noriko Yasukawa, Tokyo, JP;

Inventors:

Junko Tamura, Tokyo, JP;

Hiroshi Kita, Tokyo, JP;

Eisaku Katoh, Tokyo, JP;

Noriko Yasukawa, Tokyo, JP;

Assignee:

Konica Minolta Holdings, Inc., Tokyo, JP;

Attorney:

Lucas & Mercanti, LLP

Primary Examiner:

Andrew K Bohaty

Int. Cl.
CPC ...
H01L 51/54 (2006.01); C09K 11/06 (2006.01); C09K 11/02 (2006.01); H05B 33/14 (2006.01); H05B 33/20 (2006.01); H01L 51/50 (2006.01); H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
C09K 11/06 (2013.01); C09K 2211/1011 (2013.01); H01L 51/5036 (2013.01); H01L 51/5016 (2013.01); H01L 51/0085 (2013.01); C09K 2211/1055 (2013.01); C09K 2211/104 (2013.01); C09K 11/025 (2013.01); H01L 51/0081 (2013.01); C09K 2211/1051 (2013.01); C09K 2211/1033 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1074 (2013.01); C09K 2211/1044 (2013.01); C09K 2211/185 (2013.01); H05B 33/14 (2013.01); C09K 2211/1059 (2013.01); C09K 2211/1048 (2013.01); C09K 2211/1088 (2013.01); C09K 2211/107 (2013.01); C09K 2211/1029 (2013.01); H01L 2251/552 (2013.01); H05B 33/20 (2013.01); C09K 2211/1092 (2013.01); H01L 51/0072 (2013.01); C09K 2211/1037 (2013.01); Y10S 428/917 (2013.01);
Abstract

Disclosed is an organic electroluminescent (EL) device having high emission luminance and high emission efficiency. Particularly disclosed are a blue-light emitting organic EL device, which is high in emission luminance, color purity, emission efficiency and durability, a display and an illuminating device each employing the organic EL device. The organic El device is characterized in that it comprises a light emission layer containing two or more kinds of host compounds and at least one dopant, wherein at least one of the two or more kinds of host compounds has an excited triplet energy of not less than 2.7 eV, and the dopant is a phosphorescent compound.

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