A gas discharge device with one or more gas filled Plasma-tubes on or within a rigid, flexible, or semi-flexible substrate with each Plasma-tube being electrically connected to one or more electrical conductors such as electrodes. In one embodiment, each Plasma-tube is made of one or more luminescent substances with the exterior of each tube containing one or more luminescent substances. The Plasma-tubes may be used alone or in combination with Plasma-shells.