LCD Screen TV
LCD TV uses liquid crystals that align when subjected to electrical fields and allow light to pass through them. The liquid crystals are sandwiched between two pieces of polarized glass. An LCD monitor comprises of three cells -- one for the color red, one for green, and the last one for blue.
Plasma Screen TV
The Plasma Television uses thousands of glass, sealed chambers containing a mixture of neon and xenon. The chambers are in front of coloured phosphors. Each chamber has three phosphers, one red, one blue and one green. When these chambers are in use they emit invisible UV light that excites the phosphors on the rear display glass enabling them to produce light that can be seen by us.
