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:
Jul. 23, 2013
Filed:
Apr. 06, 2009
Kazuya Adachi, Hino, JP;
Kazuya Adachi, Hino, JP;
Sharp Kabushiki Kaisha, Osaka-Shi, Osaka, JP;
Abstract
Provided is an organic EL device capable of maintaining an excellent luminous efficiency over an extended period of time, particularly in a top emission-type EL device. The organic EL device of the invention includes a substrate and an organic EL element formed on the substrate. The organic EL element is composed of a bottom electrode, an organic EL layer, a top electrode and a protective layer. The protective layer is composed of one or a plurality of inorganic films, and at least one of the one or plurality of inorganic films is an SiON:H film having stretching-mode peak area ratios, as determined by infrared absorption spectroscopy, that include an absorption area ratio of N—H bonds to Si—N bonds in the SiON:H film which is not less than 0.04 but not more than 0.07 and an absorption area ratio of Si—H bonds to Si—N bonds which is not more than 0.15.