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:
Dec. 25, 2012
Filed:
Mar. 23, 2005
Nobuhiro Ide, Yonezawa, JP;
Jun Endo, Yonezawa, JP;
Junji Kido, Yonezawa, JP;
Panasonic Corporation, Kadoma-shi, JP;
Rohm Co., Ltd., Kyoto-shi, JP;
Abstract
The present invention provides an organic light emitting device which can reduce the angle dependency of the emission brightness and the emission color, and has a small change in the emission brightness and the emission color with respect to film thickness fluctuations, and can increase use efficiency of the light. The organic light emitting device of the present invention has a plurality of emission layersbetween an anodeand a cathode, and the emission layersare separated from each other by an equipotential surface forming layeror a charge generating layer. The feature of the present invention resides in that the organic light emitting device has, at least either inside or outside the device, a light scattering meansfor scattering light emitted from the emission layers. The organic light emitting device can reduce the angle dependency of the emission brightness and the emission color by outputting the light emitted from the emission layers in a condition where the light is scattered by the light scattering means.