BeHardware is reporting how LEDs will replace fluorescent tubing as the backlighting for LCDs in the near future.
Current LCDs features four fluorescent tubes. They deal with backlighting. Reflectors are then used to redirect light to the monitor and spread it as uniformly as possible. The result is satisfying, it is almost good enough for everyone but it is perfectible. Pixels closer to the fluorescent tubes receive more light than those located halfway between two tubes. Variations are, in principle, reduced but they can be annoying. Sometimes also, following an impact or because of malfunctioning, one area can be considerably more brightened than the others. The Iiyama AS4314UTG, a quite ancient 17" monitor, sometime produced a visible white halo in the lower part of the monitor. More recently, some of the Dell 2005FPW had a lighter corner. Giving up fluorescent tubes for uniformly spread LEDs helps to considerably reduce this type of effect. The gap between two lamps is a lot smaller.
It's worth nothing that when these monitors first become available they'll cost around five grand, but I'm sure they'll come down in price!

[The article]