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. 30, 2013
Filed:
Mar. 31, 2009
Takayuki Nagata, Osaka, JP;
Tatsuo Itoh, Osaka, JP;
Kazuhisa Yamamoto, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An information display device () includes a light source (), a light guide plate () to which light from the light source () enters from a side surface and from which the light exits from one principal surface, and a liquid crystal panel () disposed adjacently to the light guide plate (). Outside light is injected into the light guide plate () from an opposing surface opposing the one principal surface. The light guide plate () includes a light control mirror () electrically switchable to transmit light and to reflect light. At least one of the light from the light source () and the outside light exits from the one principal surface of the light guide plate (). The light passes through the liquid crystal panel () and a character or an image is displayed.