Plasma is ionised gas. Displays made using Plasma technology use three sealed cells, each containing phosphor elements and plasma, to represent a pixel. The plasma sealed in the cells is usually derived from the gases Xeon or Neon. The phosphor elements in each of the three cells are either of the three colours Red, Green, and Blue. When an electric charge is passed through a cell, it excites the plasma, which causes the phosphor in that cell to light up. The combination of the three colour cells make up the colour of the pixel. Like in an LCD, displays based on Plasma technology have a native resolution.