Plasma display TV
The plasma screens work similar to fluorescent lighting tubes (improperly called neon). They use electricity to illuminate a gas.
The gas used is a mixture of noble gases (argon, xenon 10-nannd 90%).
This mixture of gases is inert and harmless. That issue of light applied an electric current which turns it into plasma, a fluid ionized whose atoms have lost one or more of their electrons and are electrically neutral, so that the freed electrons form a cloud autour. The gas is contained in cells, corresponding to the (phosphors) sub-pixels. Each cell is addressed by an electrode line and a column electrode;
by modulating the voltage applied between the electrodes and the frequency of excitation,
It is possible to set the light intensity (in practice uses up to 256 values).
The light produced is ultraviolet, so invisible to humans, and are the Phosphors respectively red, green, and blue, across cells, which convert it to visible colored light, which allows to get the pixels (compounds of) three cells) 16 777 216 color (2563).