We've already seen some of Nemoptic's so-called Binem displays on their own, but the company's just made things considerably more interesting by combing the low-power, black-and-white display with a full color OLED. That would function as a dual-mode display (a la Pixel Qi), giving you the ability to use the reflective Binem component when you're outdoors or just looking to save power, and switch to the OLED as needed. What's more, the Binem display can actually retain an image even when the power is off, which could let you spruce up your e-reader with a favorite image as a persistent wallpaper, for instance. Unfortunately, there's no word as to when the display might make it into an actual product, but you can check it out in action in the video after the break.