>LCDs typically use color filters, which in most cases tend not to fade. The older LCDs were backlit with (cold cathode) fluorescent lamps, and those lamps do

>LCDs typically use color filters, which in most cases tend not to fade. The older LCDs were backlit with (cold cathode) fluorescent lamps, and those lamps do fade out and shift in color over time. With those you do want to adjust calibration once in a while. No idea how modern LCD backlit ones fare in longer run. At one point I've had two decent quality CCFL LCDs set side-by-side; one had about 10'000 hours, the other 40'000 hours. The difference in color (and in brightness) was notable, and not quite possible to get right with the basic RGB calibration provided.