Thin, flexible sheets that can be imprinted with any pattern in colored lights—no wires needed. Called LED-embedded Light Films, teams an LED with conductive polymer films, creating a thin, flexible transparent sheet with LED lights embedded into the surface. There are no visible connectors between the lights (the polymer sheet itself acts as the "wiring"), and the sheets may themselves be laminated between glass, added to molded polymers, or used as lightweight backlighting for electronics. The films are then simply connected to a power source via a wire. The largest single sheet of film currently available is made by SUN-TEC Swiss United Technologies in Hünenberg, Switzerland, and measures 4 x 11 feet (1250 mm x 3500 mm). No more sleeping in the dark with an LED blanket that big.More at Businessweek.
