Dreamy Design Sony PSP 2 with flexible OLED Display Concept -- Designer Tai Chiem mixed the potential of flexible OLED displays with the Sony PSP gaming console. The result is a stunning design of a roll-up Sony PSP 2. Roll-up displays are nothing new for gadgets though. Polymere Vision developed the Readius pocket eReader that is also supposed to be available as a mobile phone. Roll-up or folding displays are going to be the next big thing for portable devices in the years to come. At some point in the future we will hopefully get to the point that we do not have to kill trees anymore for newspapers and magazines. For that to happen ePaper gadgets need to become asconvinient to use as paper magazines are today.