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:
Jan. 19, 2016
Filed:
Dec. 11, 2014
Sony Corporation, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
An organic electroluminescence device is capable of enhancing reflectance of an anode, resulting in improved light-emitting efficiency. An anode, a thin film layer for hole injection, an insulating layer, an organic layer including a luminescent layer and a cathode including a semi-transparent electrode are laminated in order on a substrate. The anode comprises silver which is a metal with high reflectance or an alloy including silver, and the thin film layer for hole injection comprises chromium oxide or the like. Light generated in the luminescent layer is multiply reflected between the anode and the semi-transparent electrode to be emitted from the cathode. As the reflectance of the anode is enhanced, the light generated in the luminescent layer can be efficiently emitted. An alloy comprised in the anode preferably includes silver, palladium and copper, and a silver content is preferably 50% by mass or over.