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:
Feb. 19, 2013
Filed:
May. 20, 2008
Yuji Yashiro, Osaka, JP;
Yuji Yashiro, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A backlight unit () provided with a LED package (light source) () and a light guide plate () includes a light-emitting portion () that is provided on the light guide plate side of the LED package () so as to be opposed to an incident surface () of the light guide plate () and outputs light from the LED package () toward the light guide plate (). A dimension on the incident surface side of the light-emitting portion () in a thickness direction of the light guide plate () is not more than a dimension at the incident surface () of the light guide plate () in its thickness direction, and the light-emitting portion () uses a two-dimensional photonic crystal ().