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:
Sep. 10, 2013
Filed:
Aug. 25, 2008
Masahiro Nakamura, Osaka, JP;
Takeyuki Yamaki, Ikoma-gun, JP;
Yoshio Mitsutake, Kashiba, JP;
Masahito Yamana, Takarazuka, JP;
Nobuhiro Ide, Katano, JP;
Norihiro Ito, Osaka, JP;
Hiroya Tsuji, Kyoto, JP;
Masahiro Nakamura, Osaka, JP;
Takeyuki Yamaki, Ikoma-gun, JP;
Yoshio Mitsutake, Kashiba, JP;
Masahito Yamana, Takarazuka, JP;
Nobuhiro Ide, Katano, JP;
Norihiro Ito, Osaka, JP;
Hiroya Tsuji, Kyoto, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An organic EL device in the present invention comprises a light-transmissive substrate, an organic light emitting layer, a light-transmissive electrodedisposed between the light-transmissive substrateand the organic light emitting layer, and a light guiding layerwhich is disposed between the substrateand the light-transmissive electrode. The light guiding layeris configured to alter light direction. The organic EL device is configured to emit light from the organic light emitting layer, and allow the light to propagate out through said light guiding layer, the light-transmissive electrode, and the light-transmissive substrate. The light guiding layerincludes a light dispersion layer. The light dispersion layeris formed with a light dispersion regionand a light-transmissive region, which are arranged in a coplanar relation within said light dispersion layer. The light dispersion regioncontains light dispersion particlesand a binder resin. The light-transmissive regioncontains the light dispersion particlesat a lower ratio than the light dispersion region. The organic EL device in the present invention enables to improve an overall light output by suppressing the reduction of light output in the front direction as well as increasing light output in diagonal directions.