Nokia is showing a beautiful new bendable device prototype called the Kinetic. The idea is that you can bend and twist the whole device to perform certain actions: for example bending it towards you is used to select an option or zoom-in on an image.
Nokia didn't say what kind of display technology is used in this device , but it's most likely a flexible OLED. The display is 4" in size and has impressive viewing angles according to reports. In the past two years we've seen several companies present flexible/bendable OLED Prototypes: Samsung, LG and UDC, Toshiba, Sony, AUO and the FDC with UDC. Nokia is already buying AMOLED panels from Samsung and LG, so it's likely they are collaborating with one of the Korean makers.