[julesstoop]

Flat-surface electro-static speakers do sound great indeed. You wouldn't want your screen to be one though.

In order to generate sound, one needs actual physical motion of the screen, back and forth many times a second. Allthough the deflection needn't be great, it's easily in the order of a few tenths of a millimeter and even more for low pitched sound.

In other words: you are going to see it.