The slogan pretty much says it all: Flex Lighting has developed a new front light LED film that could drastically change the way you interact with your e-reader. According to the Chicago-based company, this film is part of a new lighting system that promises to bring smooth, nighttime reading to E Ink displays everywhere. Flex Lighting's setup is rather simple, consisting of nothing more than a single LED and a thin layer of film, laminated onto a device's reflective screen. At a thickness of just 50 micron, the film essentially acts as a light guide, spreading the LED's beams across a reader's display and creating a "soft glow" that many predecessors have thus far failed to replicate. The folks over at the eBook Reader managed to get their hands on a brief demo video, in which the system performs rather impressively. See it in action for yourself, after the break.