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. 23, 2014
Filed:
Jan. 30, 2012
Hiroyuki Kaihoko, Kanagawa, JP;
Hiroyuki Kaihoko, Kanagawa, JP;
Fujifilm Corporation, Tokyo, JP;
Abstract
An IPS or FFS-mode liquid-crystal display device includes an optical compensatory film having a first retardation region and a second retardation region adjacent to the first retardation region, wherein a slow axis of the first retardation region is parallel to a slow axis of the second retardation region, retardation in-plane at a wavelength of 550 nm, Re(550) of the second retardation region is equal to or less than 20 nm, and retardation along the thickness-direction at a wavelength of 550 nm, Rth(550) of the second retardation region is from 20 nm to 120 nm, the first retardation region includes a retardation layer containing a vertically-aligned discotic liquid-crystal compound, and Re thereof at a wavelength of 450 nm, 550 nm and 650 nm, Re(450), Re(550) and Re(650) satisfy Re(450)/Re(550) of from 1 to 1.13 and Re(650)/Re(550) of from 0.94 to 1.