Abstract

Inclined LED array and flat bottom reflector for large-sized backlight system was proposed to obtain high brightness uniformity. Tilted LEDs rearrange the angular distribution of light source optimized without extra designing optical configuration. The novel backlight system is simpler in structure than the traditional ones. Optimum inclined angle of 10 degrees of LEDs on 22″ panel as designed example yields the competitive uniformity of 85% and a color gamut of a factor of 1.3 wider than those of commercial CCFL backlight.

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