Samsung Display has unveiled two new OLED panels at the annual Display Week trade show in Los Angeles. The Rollable Flex is a flexible screen that can be unrolled from 49mm to over five times its length, while the Sensor OLED Display offers fingerprint and blood pressure sensing without requiring a separate module. The latter also measures heart rate and stress levels via readings taken from fingers. Both technologies could have implications for future smartphones, although Samsung does not produce consumer devices directly.