A review is made of the electroluminescent panels that have been prepared using activated zinc sulfide. The materials control at all stages of preparation is stressed. The characteristics of ac, continuous dc and pulsed dc operation cells are compared. Improved maintenance in dc electroluminescent displays is shown in panels prepared from manganese activated zinc sulfide, coated with a conducting layer of copper sulfide. Other activator systems in zinc sulfide are described and possible new host lattices discussed. Red electroluminescence from manganese activated barium zinc sulfide is described.