LED wallpaper is an expression encompassing a range of different technologies developed since the beginning of the 21st century, aimed at integrating light-emitting diodes into flat substrates suitable to be applied to walls for interior decoration purposes.The experimentation on the combination of light sources and wall covering surfaces has been largely fostered by the progressive miniaturisation of low-voltage lighting technology, such as LEDs and OLEDs, suitable to be incorporated into low-thickness materials to be applied onto interior walls.The new possibilities offered by these developments have prompted some designers and companies to research and develop proprietary LED wallpaper technologies, some of which are currently available for commercial purchase. Other solutions mainly ex