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:
May. 27, 2014
Filed:
Oct. 13, 2010
Katsuaki Kuze, Ohtsu, JP;
Kenji Kawai, Ohtsu, JP;
Kazumoto Imai, Ohtsu, JP;
Akihumi Yasui, Ohtsu, JP;
Akira Matsuda, Ohtsu, JP;
Masao Kochi, Tokyo, JP;
Katsuaki Kuze, Ohtsu, JP;
Kenji Kawai, Ohtsu, JP;
Kazumoto Imai, Ohtsu, JP;
Akihumi Yasui, Ohtsu, JP;
Akira Matsuda, Ohtsu, JP;
Masao Kochi, Tokyo, JP;
Toyo Boseki Kabushiki Kaisha, Osaka, JP;
Abstract
To provide a viewing-angle-enhancing film which is set in a liquid crystal display device at a position nearer to an observer than the position of a liquid crystal layer in the device, and which attains, at a high level, the compatibility of being enhanced in viewing angle with a decrease in the darkening of images at the time of observing the screen from the front thereof. A viewing-angle-enhancing film which is set in a liquid crystal display device at a position nearer to an observer than the position of a liquid crystal layer in the device, and simultaneously satisfies the following requirements (1) to (3): (1) the film has a parallel ray transmittance of 5 to 90%; (2) the film has a diffusivity (A) of 1 to 20 degrees in its main diffusion direction; and (3) the film has a diffusivity ratio of 0.25 to 15% in the main diffusion direction.