Computer on a roll?
A new type of polymer film is being used to make flexible computer displays that might one day be rolled up like a scroll. The film, developed by Papyron, a Dutch spin-off from the University of Gröningen, contains regular arrays of holes 0.02 millimetres in diameter. Filling the holes with light-emitting polymers produces a light-emitting screen. Alternatively, the holes can be filled with particles that change colour in response to electric charge to make a reflective screen. Both types of screen have a much wider viewing angle than other proposed roll-up displays,