TechCrunch covered Prysm's new laser phosphor display (LPD) technology today.

Prysm doesn't indicate what kind of pixel density their displays typically have but I'm guessing from their brochure that they'll have decent pixel pitch and the ability to "tile" up to very large sizes.

If Prysm can scale displays up to a "gigapixel", which would be 31600x31600, then we're going to need better engines to pump that many pixels or successfully argue that we don't need to scale that high.  Another way to think of a gigapixel is 244 30" displays.

Looking forward to finding out more about Prysm.