Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 28, 2012
Patent Application Number
12556620
Date Filed
September 10, 2009
Patent Citations Received
Patent Primary Examiner
Patent abstract
A planar light source device of the present invention includes a light guide plate and a plurality of light-emitting diodes. The light guide plate includes a plurality of plate-form light guide members whose side surfaces are formed in a serrated shape. The serrated-shaped side surfaces of adjacent light guide members are connected in a planar direction so as to be engaged with each other. The plurality of light-emitting diodes emit light toward each of the light guide members. With this configuration, it is possible to securely prevent irregularity of brightness, when changing the luminance in the display screen in unit of blocks.
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