With the present invention, when a minimum number of LEDs are provided on the light receiving surfaces of the light guide plate, generation of brightness variations on the illuminating surface due to lowering of brightness of the LEDs is suppressed, which prevents {HEAD ~ degradation} in {TAIL ~ display quality} 
With the present invention , when a minimum number of LEDs are provided on the light receiving surfaces of the light guide plate , generation of brightness variations on the illuminating surface due to lowering of brightness of the LEDs is suppressed , which prevents { HEAD ~ degradation } in { TAIL ~ display quality }
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