One of the most interesting hi-tech innovations this year is certainly the rollable OLED screen, developed by Sony company. You can roll this strange screen around your pen, and it will still show images. It is a full-colour screen, with 4.1-inch diagonal, and merely 80 micrometers thick. Its resolution is 432×240 pixels, and you can easily wrap this exciting device around a cylindrical object without fear that it may crack or stop working. There is still no information about when these screens will hit the stores, or what devices will house them.