Glass with embeded LEDs

The development of powerglass® allows for the first time to integrate chip LEDs, with light radiating on both sides, into laminated glass on completely transparent circuit path structures, and provide electrical power supply without visible wires. Signal transmission and power supply happens via the transparent, conductive lamination of the powerglass® panel, and therefore is an invisible function of this high-tech glass.

http://www.glas-platz.de/powerglass/