Plasma TV’s are the biggest television - technology revolution since color television.
How do LCD Screens Work?
LCD monitors (Liquid Crystal Display) work by blocking light. By sandwiching a solution of TN (twisted pneumatic) liquid crystals between two perpendicularly aligned panes of polarized glass, it becomes possible to manipulate the intensity of light as it passes through this crystalline matrix and out the glass panel at the other end.
Depending on the voltage of the electrical charge running through them, liquid crystals will untwist so that the intensity of light able to pass through the second polarized pane is affected.
Basically, these displays can switch between light states (where the liquid crystals are fully twisted) and dark states (where the liquid crystals are fully untwisted), or somewhere along the gray scale in between.