The problem with multiple screens is that the bezels between the screens are often so thick that you end up with an inch or more gap between images. Sharp has announced a new multi-screen display system called the PN-V601 that has 60-inch screens and has a bezel 6.5mm thick.
The screen will launch at the end of August in Japan at an undisclosed price. The bezel is only 2.4mm thick on the right and bottom and 4.1mm thick on the left and top. Up to 25 of the screens can be put together in a 5 x 5 configuration.