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. 20, 2005
Filed:
Jan. 16, 2001
Minoru Miyatake, Osaka, JP;
Tatsuki Nagatsuka, Osaka, JP;
Minoru Miyatake, Osaka, JP;
Tatsuki Nagatsuka, Osaka, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
An organic electroluminescent device containing an organic electroluminescent element () and a polarized-light scattering film () which comprises a light-transmitting resin () and dispersedly contained therein minute regions () differing from the light-transmitting resin in birefringent characteristics and in which the difference in refractive index between the minute regions and the light-transmitting resin in the axis direction in which a linearly polarized light has a maximum transmittance, Δn, is smaller than 0.03 and that in a direction perpendicular to the Δndirection, Δn, is from 0.03 to 0.5, the light produced by the organic electroluminescent element being emitted from the device through the polarized-light scattering film. Also disclosed are a polarizing surface light source which comprises the organic electroluminescent device and a liquid-crystal display which comprises the polarizing surface light source and a liquid-crystal cell disposed on the light emission side of the light source.