SOLID-STATE, COLOR-BALANCED BACKLIGHT WITH WIDE ILLUMINATION RANGE

摘要

A color balanced solid-state backlight (15) provides feedback control of each color using a single photo detector (42) by imposing a modulation pattern (94, 96, 98) on the solid-state lamps revealing individual colors to the photodetector. The photo detector signal provides feedback controlling color balance over a small range of instantaneous brightness less than larger range of average brightness of the display to provide for accurate color balance throughout a large range of average brightnesses.