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:
Oct. 12, 2010
Filed:
May. 11, 2007
Naotaka Kinjo, Osaka, JP;
Kentarou Yoshida, Osaka, JP;
Takashi Shimizu, Osaka, JP;
Shinobu Nagano, Osaka, JP;
Nao Murakami, Osaka, JP;
Masaki Hayashi, Osaka, JP;
Naotaka Kinjo, Osaka, JP;
Kentarou Yoshida, Osaka, JP;
Takashi Shimizu, Osaka, JP;
Shinobu Nagano, Osaka, JP;
Nao Murakami, Osaka, JP;
Masaki Hayashi, Osaka, JP;
Nitto Denko Corporation, Ibaraki-Shi, Osaka, JP;
Abstract
It is an object of the present invention to provide a liquid crystal display panel having a high contrast ratio in a front direction. A liquid crystal panel according to an embodiment of the present invention includes: a liquid crystal cell; a first polarizing plate placed on one side of the liquid crystal cell; a second polarizing plate placed on the other side of the liquid crystal cell; and a retardation layer placed between the liquid crystal cell and the second polarizing plate. A refractive index ellipsoid of the retardation layer exhibits a relationship of n≧ny>nz; and a light transmittance (T) of the second polarizing plate is larger than a light transmittance (T) of the first polarizing plate. Such a liquid crystal panel has a remarkably higher contrast ratio in a front direction than that of a conventional liquid crystal panel (for example, a liquid crystal panel in which the light transmittances of two polarizing plates placed on both sides of a liquid crystal cell are the same), and shows excellent display properties.