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:
Mar. 17, 2015
Filed:
Dec. 15, 2008
Applicant:
Seiji Umemoto, Ibaraki, JP;
Inventor:
Seiji Umemoto, Ibaraki, JP;
Assignee:
Nitto Denko Corporation, Ibaraki-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01); G02B 27/28 (2006.01);
U.S. Cl.
CPC ...
G02B 27/28 (2013.01); G02F 1/133528 (2013.01); G02F 2001/133531 (2013.01);
Abstract
There are provided a viewing angle controlling system which can be used in a display device for which peep-prevention and viewing-angle-control are required, and makes it possible to control the viewing angle of a display, and an image display device using the same. The viewing angle controlling system includes: a first polarizer and a second polarizer which are each in the form of a film comprising an absorption dichroic material. The first polarizer has an absorption axis in its film plane, and the second polarizer has an absorption axis in the range of angle from 0 to 45° to the normal line of its film plane.