Plasma/LCD Screens

LCD and Plasma TV's. The advantages are that they have more pixels per square inch than a CRT (or "normal") TV, meaning you get a sharper image (it's worth remembering that, as with all Tv's, some screens have better clarity than others)  They are sleek and slim, easily mounted on a wall or stand.  LCD and plasma TV's do not have scan lines.  LCD stands for Liquid Crystal Display. Hundreds of thousands of tiny pixels sits behind the TV screen. Behind these pixels is a fluorescent white backlight.  When the light hits the pixels, an electric current determines what colour appears on the screen, and the millions of tiny light variations make up the image that you see on your TV.

Plasma are different they are made of two sheets of glass, between which plasma (xenon and neon gas) fills thousands of tiny chambers, Behind each chamber are a series of red, blue and green phosphors.  When electricity hits the plasma chambers, they emit invisible UV light, which then hits one of the coloured phosphors.  This creates a visible image on the screen.