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. 04, 2011
Filed:
Apr. 02, 2008
Noriyuki Hirai, Miyagi, JP;
Akihiro Horii, Miyagi, JP;
Hiroshi Mizuno, Miyagi, JP;
Kei Obata, Miyagi, JP;
Mitsunari Hoshi, Miyagi, JP;
Noriyuki Hirai, Miyagi, JP;
Akihiro Horii, Miyagi, JP;
Hiroshi Mizuno, Miyagi, JP;
Kei Obata, Miyagi, JP;
Mitsunari Hoshi, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
An optical sheet capable of eliminating rapid lowering of the luminance view angle while minimizing the lowering amount of the front luminance, or while avoiding the lowering of the front luminance is provided. The optical sheet includes a first light transmissive film and a second light transmissive film. The first light transmissive film and the second light transmissive film are layered on each other, the first light transmissive film has a plurality of first convexes that extend in a given direction and are arranged in parallel in a direction crossing the given direction in-plane on the second light transmissive film side, and the second light transmissive film has a plurality of second convexes that are arranged in parallel in one direction and are arranged in parallel in a direction crossing the one direction in-plane on the first light transmissive film side, and has shape anisotropy and refractive index anisotropy in-plane.