PaperDisplays, printed-electronic displays from Swedish-based research institute Acreo, (, are to be manufactured in volume by Soligie in Savage, Minn. ( Printed electronics builds circuits with functional, not decorative, inks. PaperDisplays are made with “electrochromic” inks that change color or properties when subjected to a small, brief electrical charge. The technology prints on paper and plastic substrates. It can be creased, bent, or folded with no harm to the display.