Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Satoshi Maeda0
Hirokazu Aritake0
Date of Patent
December 6, 2011
0Patent Application Number
118997480
Date Filed
September 7, 2007
0Patent Citations Received
...
Patent Primary Examiner
Patent abstract
An illumination device which can be used as a front light or a back light by improving brightness unevenness in the vicinity of an LED without dropping entire brightness and a liquid crystal display device using the same. This illumination device 10 has a light source on a light entering face 27 of a light guide plate 20 and a light guide plate 20 in which prisms 25 for reflecting by polarization or emitting light out of the light guide plate 20 are formed on a light emission face or a light reflecting face thereof and a cylindrical lens 26 for orienting and magnifying light is formed on the other face.
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