by wesblack on Tue Jan 17, 2012 3:35 pm 
Samsung showed off its transparent display technology at the 2012 CES show in Las Vegas, demonstrating its potential use as replacement for actual windows in people's homes. The CES 2012 innovation award winner Samsung Smart Window is essentially a 46-inch LCD, only that it is completely see-through and can overlay touch controlled widgets as well as a browser and media.
The Samsung Smart Window runs on ambient lighting so the LCD is powered by the sunlight outside. Privacy shouldn't be a problem as the display reportedly acts as a two-way mirror, you can see out but not the other way around. Also, during night time hours when there’s no light shining through the window powering the display, you can switch to night mode and use an edge-lit backlight instead.
the 46-inch panel runs at 1366 x 768 resolution and has a 500:1 contrast ratio. Regular LCDs are only 5-percent transparent, whereas Samsung’s new panels increase that to 15-20-percent. Unfortunately there’s still no word on pricing or domestic availability.
Link: http://www.youtube.com/watch?v=mTVPVobDrms