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:
Nov. 20, 2012
Filed:
May. 11, 2006
Hiroya Tsuji, Yonezawa, JP;
Atsushi Oda, Kawasaki, JP;
Hiroya Tsuji, Yonezawa, JP;
Atsushi Oda, Kawasaki, JP;
Panasonic Corporation, Osaka, JP;
Yamagata Promotional Organization for Industrial Technology, Yamagata, JP;
Abstract
An organic EL (electroluminescence) element capable of efficiently recombining holes and electrons in a light emitting layer and also improving efficiency and lifetime of the element. The element comprises electrodesand, the light emitting layer, and transport layersandthat transport holes and electrons to the layer. The layercontains compound functioning as electron accepting dopant and/or substance functioning as electron donating dopant. Accordingly, it is possible to optimize the injection valance of holes or electrons into the layer