The heat needs to be dissipated by the screen, becvause most people who sit their laptops on their laps (hence the name!) don't want the heat on their laps...
The problem is that the display also generates a fair amount of heat, so a "radiator" of some kind needs to be somewhat isolated from it, which in turn will make the whole contraption somewhat thicker, which is not appealing.
So combining the small pump, an ultra low flow block, and some (almost) capilary tubing for a rad, a laptop could be watercooled. The only problem to resolve then, is the reliability of the tubing run, across the screen's hinge.
(Man, I ought to just shut up and market this stuff!)
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