> Using an LED backlight instead of fluorescent. Heat problem solved.

Haha if only that were true.  LEDs are very concentrated sources of heat, 
this generates very high maximum temperatures compared to CCFLs.  LEDs get 
less efficient the hotter they get (opposite to CCFLs) ... say hello to 
positive feedback!  And anyway, currently LEDs aren't *that* much more 
efficient than CCFLs at converting electricity to light, you're certainly 
not going to half your power or anything like that.

The big drive to change from CCFL to LED is mainly because mercury is banned 
(or will be banned soon) in most applications.

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