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. 26, 2010
Filed:
Oct. 06, 2008
Atsushi Seki, Kanagawa, JP;
Atsushi Seki, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A planar light source device configured to illuminate a transmissive liquid crystal device having a display region configured of pixels arrayed in a two-dimensional matrix from the rear side, includes: planar light source units corresponding to hypothetical display region units into which the liquid crystal display device is divided; a light source provided to each planar light source unit has j×j(j≦2, j≦2) light-emitting device units which are classified into first and second light-emitting device units; each light-emitting device unit being configured of i (i≦1) red, 2i green, and i blue light-emitting devices. At each planar light source unit, the light-emitting devices of each color are classified into first and second luminance values. The classification categories differ between first and second light-emitting device units. The first light-emitting device unit and the second light-emitting device unit are placed in at least twofold rotational symmetry.