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:
Dec. 08, 2015
Filed:
Jul. 25, 2008
Applicants:
Masaru Kinoshita, Kanagawa, JP;
Manabu Tobise, Kanagawa, JP;
Inventors:
Masaru Kinoshita, Kanagawa, JP;
Manabu Tobise, Kanagawa, JP;
Assignee:
UDC Ireland Limited, Dublin, IE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/54 (2006.01); C09K 11/06 (2006.01); H01L 51/50 (2006.01); H05B 33/14 (2006.01); H05B 33/18 (2006.01); H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5016 (2013.01); C09K 11/06 (2013.01); H01L 51/0087 (2013.01); H05B 33/14 (2013.01); H05B 33/18 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/1044 (2013.01); C09K 2211/185 (2013.01); H01L 51/006 (2013.01); H01L 51/0071 (2013.01); H01L 51/0081 (2013.01); H01L 2251/5346 (2013.01);
Abstract
An organic EL device includes at least a light-emitting layer provided between a pair of electrodes. The light-emitting layer includes at least a hole transporting host material and an electron transporting phosphorescent material, and the concentration of the electron transporting phosphorescent material in the light-emitting layer decreases from a cathode side toward an anode side.