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:
Mar. 04, 2014
Filed:
Jul. 22, 2010
Naomi Nagai, Otsu, JP;
Masami Nishida, Otsu, JP;
Nobuhito Miura, Otsu, JP;
Toshio Matsumoto, Fujisawa, JP;
Hirotaka Umezaki, Otsu, JP;
Naomi Nagai, Otsu, JP;
Masami Nishida, Otsu, JP;
Nobuhito Miura, Otsu, JP;
Toshio Matsumoto, Fujisawa, JP;
Hirotaka Umezaki, Otsu, JP;
Kaneka Corporation, Osaka, JP;
Abstract
Provided is a high-luminance, long-life laminated organic electroluminescent element. The organic electroluminescent element has a composition in which a plurality of light-emitting units, including at least one organic light-emitting layer, are laminated between a positive electrode and a negative electrode, and in which a linking layer is held between the respective light-emitting units. The linking layer is formed by laminating, in succession from the positive electrode side, an electron generating/transport section, an intermediate layer, and a hole generating/transport section, which contain at least one metal selected from a group consisting of an alkali metal, alkaline earth metal, rare earth metal, alloy of these metals, and compound of these metals. Preferably the intermediate layer contains an electrical insulating non-semiconductive substance having a specific resistance which is between 1.0×10Ω·cm and 1.0×10Ω·cm.