3M is already in volume production of auto stereo 3D displays.
The 3M 3D technology is actually an optical film that enables 3D display on LCD panels. the film consists of lenses on one side and prism structures on the other to reflect the corresponding imagery to our eyes to create a 3D effect - without wearing glasses.
3M showed 9-inch and 2.8-inch LCD panels with their 3D film at the FDP International 2009. I assume we'll see a 3D phone soon.
More details on TechOn. Via RegHardware and 3D Display-Info.