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:
Mar. 01, 2016
Filed:
Nov. 05, 2010
Seiji Sakai, Tokyo, JP;
Seiji Sakai, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A surface light source apparatus capable of keeping a high in-plane brightness uniformity and a high light utilization efficiency without increasing the size of a frame, and also to provide a display apparatus including the surface light source apparatus. The surface light source apparatus includes a point light source, and a light guide plate having a hole formed near first side surface that is one side surface thereof, the hole being formed at a position where the point light source is to be arranged. The first side surface of the light guide plate has, in a portion thereof near the hole, a prism having a saw-toothed shape in a cross-section thereof parallel to a front surface of the light guide plate.