Glasses-free 3D viewing is likely to come to mobile handsets before it reaches the TV set, thanks to a new display developed by 3M. The Field Sequential 3D Display Film would replace the standard screen on a mobile device and employ a directional backlight that focuses an image to the viewer's right and left eyes sequentially. 3M's products, most of which are distributed under the Scotch brand, include numerous lines of magnetic and film goods but it is not a known player in mobile applications. While the technology can be applied to screens as large as nine inches, the company says that it is only applicable to single-user operation. Brightness and resolution are said to be comparable with 2D screens. CNET News quoted one 3M executive as saying that the screen could turn up on some handsets in the U.S. by the holiday season.