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:
Jun. 12, 2012
Filed:
Mar. 13, 2008
Tsuyoshi Okazaki, Osaka, JP;
Takehiko Sakai, Osaka, JP;
Katsuhiko Morishita, Osaka, JP;
Yoshiharu Kataoka, Osaka, JP;
Chikanori Tsukamura, Osaka, JP;
Dai Chiba, Osaka, JP;
Tsuyoshi Okazaki, Osaka, JP;
Takehiko Sakai, Osaka, JP;
Katsuhiko Morishita, Osaka, JP;
Yoshiharu Kataoka, Osaka, JP;
Chikanori Tsukamura, Osaka, JP;
Dai Chiba, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
There are provided a viewing angle control device that can provide a pure black display without coloring and have a significantly improved shielding ability in the narrow viewing angle state, and a display using the viewing angle control device. To adjust the VT (voltage-transmittance) characteristics of a viewing angle control liquid crystal panel () that switches a viewing angle between a wide viewing angle state and a narrow viewing angle state by using birefringence of liquid crystal, translucent electrode films (), to which alternating-current voltages with different frequencies are applied, are provided on a portion of at least one of a pair of translucent substrates () sandwiching the liquid crystal, the portion corresponding to at least one color of a picture element of a display liquid crystal panel (), so that the voltage-transmittance characteristics of the liquid crystal are adjusted.