WINDSHIELDS and windows that can be transformed into digital displays without blocking out the light have long been desired by architects and car designers. Existing display technologies appear opaque even when switched off. But now researchers at the Fraunhofer Institute for Applied Polymer Research in Potsdam, Germany, have developed a transparent polymer that emits light when a current is applied to it.
The polymer is a type of organic light-emitting diode, and at just 1 millimetre thick is around half the thickness of standard light-emitting materials. By applying the polymer to windows, buildings could be converted into giant displays, visible…
