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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 9705087 B1

PDFFull Text
Date of Patent:
Jul. 11, 2017

Filed:

Feb. 25, 2016

Organic light emitting device

Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventors:

Minako Nakasu, Tokyo, JP;

Masataka Yashima, Tokyo, JP;

Hajime Muta, Zama, JP;

Keiji Okinaka, Kawasaki, JP;

Tomona Yamaguchi, Tokyo, JP;

Tomonari Horikiri, Sagamihara, JP;

Maki Okajima, Kawasaki, JP;

Naoki Yamada, Inagi, JP;

Assignee:

CANON KABUSHIKI KAISHA, Tokyo, JP;

Attorney:

Fitzpatrick, Cella, Harper & Scinto

Primary Examiner:

Andrew K Bohaty

Int. Cl.
CPC ...
H01L 51/54 (2006.01); C09K 11/06 (2006.01); H01L 51/00 (2006.01); H01L 51/50 (2006.01); H05B 33/14 (2006.01); C09K 11/02 (2006.01); G03G 15/04 (2006.01); H01L 27/32 (2006.01);
U.S. Cl.
CPC ...
H01L 51/006 (2013.01); C09K 11/025 (2013.01); C09K 11/06 (2013.01); G03G 15/04036 (2013.01); H01L 27/3244 (2013.01); H01L 51/0054 (2013.01); H01L 51/0058 (2013.01); H01L 51/0059 (2013.01); H01L 51/5048 (2013.01); H05B 33/14 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1014 (2013.01); H01L 51/0052 (2013.01); H01L 51/506 (2013.01); H01L 51/5012 (2013.01); H01L 51/5016 (2013.01); H01L 2251/308 (2013.01);
Abstract

Provided is an organic light emitting device with enhanced durability during continuous driving. The organic light emitting device includes: an anode, a cathode, and an organic compound layer being placed between the anode and the cathode and including at least a hole transport layer and an emission layer, in which: the emission layer contains a blue light emitting material; the hole transport layer contains a plurality of kinds of organic compounds; and an organic compound having the smallest ionization potential among the organic compounds includes a compound having no absorption spectrum peak in a blue color wavelength region in a radical cation state.

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