>>>I'm not sure I follow. Do you mean smartphones, tablets, or some mutant hybrid? To me the basic quandary is the smaller the device, the less satisfying the display. As someone said here the other day, I don't want to watch a ballgame on a cell phone screen.
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>The very largest display is perceived on an area of your eye measured in millimeters... and already there are devices that can cast images of any size directly onto that same area of retina. To paraphrase another poster, In 2011 we're like cavemen denying that TV ever will be possible because nobody can repaint an image quickly enough. ;-)

Now that's an interesting device. Are there any commercial products yet?