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:
Jun. 11, 2013
Filed:
Feb. 03, 2009
Akihiro Nanmatsu, Osaka, JP;
Koki Hongo, Osaka, JP;
Takayuki Natsume, Osaka, JP;
Ikuji Konishi, Osaka, JP;
Akihiro Nanmatsu, Osaka, JP;
Koki Hongo, Osaka, JP;
Takayuki Natsume, Osaka, JP;
Ikuji Konishi, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A liquid crystal display device includes a liquid crystal panel () disposed between two linear polarization plates () and a triacetyl cellulose film having biaxial optical anisotropy (), the triacetyl cellulose film having biaxial optical anisotropy () (i) being disposed further from the screen front side than a front polarization plate, which is one of the two linear polarization plates (), and (ii) having a planar retardation comprised in a range from 40 nm to 100 nm. Accordingly, it is possible to provide a liquid crystal display device allowing an observer to perceive, through polarized sunglasses and with a high display quality, an image on a screen not only from a frontal viewpoint but also if an azimuth angle and a polar angle at which viewpoints are set are shifted from the frontal viewpoint.