Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hong jin Park0
Date of Patent
April 29, 2008
0Patent Application Number
113086310
Date Filed
April 14, 2006
0Patent Primary Examiner
Patent abstract
Provided is a backlight unit for a key of an input device. The unit includes a light guide plate and at least one light emitting unit. The light guide plate is formed of flexible transparent resin and has a light guide pattern portion in which a plurality of engraved patterns are formed in a plurality of requirement character shapes so that light can be diffused and scattered at desired luminance from a necessary light emitting portion, using a minimal number of light sources. The light emitting unit is installed at a side wall of the light guide plate.
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