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. 09, 2009
Filed:
Jun. 07, 2007
Toru Kiyohara, Kumamoto, JP;
Toshiyuki Yoneda, Tokyo, JP;
Toru Kiyohara, Kumamoto, JP;
Toshiyuki Yoneda, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
Each point light source includes an overhang projecting perpendicularly to a light emitting surface from one side of the light emitting surface, and the overhang has its main surface made in contact with a light outgoing surface of a light guide plate with the light emitting surface facing a light incident surface of the light guide plate. Engagement of the overhang with the light outgoing surface of the light guide plate prevents a displacement of the light emitting surface of the point light source and the light incident surface of the light guide plate even when the light guide plate suffers from deformation such as warpage. Even if a displacement occurs, the presence of the overhang reflects leaked light to guide it to the light incident surface of the light guide plate.