This project tries to study the use of great interfaces as well as electroluminescent ink operation in great surfaces controlled by means of computers. The idea was to create a series of graticules which would illuminate to contact by means of this type of inks and the suitable programming to control every single squares in the graticule. This project allows to create huge interfaces, without a limit, controlling it in real time by using the software to generate great screens in motion. We looked for the way to verify the electroluminescent ink use as an alternative to conventional screens made up of leds as an easy, cheap and attractive method when it comes to showing signals and dynamicmessages.