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. 08, 2009
Filed:
Mar. 21, 2005
Shuuji Yano, Ibaraki, JP;
Masayuki Kawai, Ibaraki, JP;
Shuuji Yano, Ibaraki, JP;
Masayuki Kawai, Ibaraki, JP;
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Abstract
An IPS mode liquid crystal display comprising a liquid crystal cell, an optical film (F) provided on a cell substrate on one side of the liquid crystal cell and comprises a polarizing plate comprising a transparent protective film having an in-plane retardation Re 10 nm or less and a thickness direction retardation Rth in the range of from 30 to 100 nm, a retardation film having an Nz value in the range of from 0.3 to 0.7 and an in-plane retardation Rein the range of from 200 to 300 nm, and an optical film (F) provided on a cell substrate on the other side of the liquid crystal cell and comprises the polarizing plate and a retardation film having an Nz value in the range of from 0.9 to 1.2 and an in-plane retardation Rein the range of from 150 to 280 nm, and the absorption axes of the polarizing plates of the optical film (F) and the optical film (F) are perpendicular to each other, and both films are disposed so that the retardation film sides face the liquid crystal cell. The IPS mode liquid crystal display has a high contrast ratio across a wide range, and capable of realizing a better view.