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:
Jan. 17, 2012
Filed:
Jun. 19, 2008
Takehiko Sakai, Osaka, JP;
Dai Chiba, Osaka, JP;
Katsuhiko Morishita, Osaka, JP;
Yoshiharu Kataoka, Osaka, JP;
Chikanori Tsukamura, Osaka, JP;
Takehiko Sakai, Osaka, JP;
Dai Chiba, Osaka, JP;
Katsuhiko Morishita, Osaka, JP;
Yoshiharu Kataoka, Osaka, JP;
Chikanori Tsukamura, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
There are provided a display that can block light so that a display on an image display device is invisible from a wide range of view angles in an oblique direction, and a view angle control element employed therein. In a narrow view angle state, a view angle control liquid crystal panel () prevents light in a predetermined wavelength region that has been incident at a polar angle of φor more from being transmitted through a polarizing plate () by using a phase difference imparted by a liquid crystal cell (). In the narrow view angle state, a view angle control liquid crystal panel () prevents light that has been incident at a polar angle of φor more, among light that has been transmitted through the polarizing plate (), from being transmitted through a polarizing plate () by using a phase difference imparted by a liquid crystal cell (). Consequently, light forming a polar angle of φor more is blocked as a whole, which allows the narrow view angle state to cover a wide range.