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.:
Date of Patent:
Sep. 14, 2010
Filed:
Sep. 21, 2004
Applicants:
Noriko Ueda, Hino, JP;
Taketoshi Yamada, Saitama, JP;
Hiroshi Kita, Hachioji, JP;
Mitsuhiro Fukuda, Chofu, JP;
Inventors:
Noriko Ueda, Hino, JP;
Taketoshi Yamada, Saitama, JP;
Hiroshi Kita, Hachioji, JP;
Mitsuhiro Fukuda, Chofu, JP;
Assignee:
Konica Minolta Holdings, Inc., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 51/54 (2006.01); C09K 11/06 (2006.01); C07D 209/82 (2006.01);
U.S. Cl.
CPC ...
Abstract
An organic electroluminescent element comprising a light emission layer and a hole blocking layer adjacent to the light emission layer, wherein, (i) the light emission layer contains a compound having a specified partial structure and having a molecular weight of not more than 1700; and (ii) the hole blocking layer contains a derivative selected from the group consisting of a styryl derivative, a boron derivative and a carboline derivative.