With the present invention, cost of {TAIL ~ the backlight system} using the surface mounted type of {HEAD ~ LEDs} can be reduced, and even when the number of LEDs is reduced, it never occurs that brightness of the LEDs lowers to locally darken the illuminating surface and that brightness variations are generated 
With the present invention , cost of { TAIL ~ the backlight system } using the surface mounted type of { HEAD ~ LEDs } can be reduced , and even when the number of LEDs is reduced , it never occurs that brightness of the LEDs lowers to locally darken the illuminating surface and that brightness variations are generated
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