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:
Jan. 14, 2014
Filed:
Apr. 23, 2012
Daisuke Nakanishi, Matsumoto, JP;
Daisuke Nakanishi, Matsumoto, JP;
Epson Imaging Devices Corporation, Nagano, JP;
Abstract
A backlight unit includes: an arrangement surface on which a plurality of light sources are arranged, and a plurality of reflection surfaces erected from a plurality of edges of the arrangement surface. The light emitted from the light sources and the light reflected from the reflection surfaces irradiate to an irradiation area surrounded by the reflection surfaces which are each inclined at an inclination angle smaller than 90 degrees with respect to the arrangement surface. At least one reflection surface includes a large inclination area inclined at a large inclination angle and a small inclination area inclined at a small inclination angle. The light source arranged close to the large inclination area is disposed closer to the outside frame of the irradiation area than the other light sources arranged close to the small inclination area in plan view from the irradiation area.