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:
Apr. 18, 2006
Filed:
Aug. 22, 2002
Seiji Umemoto, Ibaraki, JP;
Ryoji Kinoshita, Ibaraki, JP;
Yuuki Nakano, Ibaraki, JP;
Ichiro Amino, Ibaraki, JP;
Toshihiko Ariyoshi, Ibaraki, JP;
Seiji Umemoto, Ibaraki, JP;
Ryoji Kinoshita, Ibaraki, JP;
Yuuki Nakano, Ibaraki, JP;
Ichiro Amino, Ibaraki, JP;
Toshihiko Ariyoshi, Ibaraki, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
In a liquid-crystal display device, an optical path control layer is provided at least on an outer side of the back side substrate, and has a plurality of optical path changing slopes inclined at an inclination angle of from 35 to 48 degrees with respect to a reference plane of the back side substrate. The optical path control layer has a refractive index higher than that of a low-refractive-index transparent layer provided in the back side substrate. Another low-refractive-index transparent layer lower in refractive index than the transparent substrate may be provided in a visual side substrate. Light sources may be disposed on at least two side surfaces of the liquid-crystal display panel. Light sources may be disposed on side surfaces of the back side substrate and the visual side substrate and at least on side surfaces of the liquid-crystal display panel which are different from each other. Another optical path control layer may be provided also on an outer side of the visual side substrate.