Samsung is now showing off a 55 inch glasses-free 3D TV at the FPD China trade show. It’s a prototype for now. The 55-inch display can accommodate nine different viewpoints for glasses-free 3D viewing, and can be switched into a 2D mode any time.
To switch modes, it changes the optical refraction index of an LCD panel that sits on top of the main LCD that’s actually used to display images. The prototype uses a direct-lit CCFL backlight, which will likely be replaced with an LED backlight before it hits the market. For now, it’s still about 3 years away.