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 Television Types - There are several types of television on the market today.Discover the various television types and features now available...
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Lcd Television. Or Liquid Crystal Display. LCDs are slim, lightweight, use less power and are immune to the flicker of
CRT, because they offer non-interlaced pictures.
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LCD Television
An LCD or Liquid Crystal Display is a sandwich composed of multiple
layers. Light from a fluorescent tube at the rear is passed through
a layer of liquid crystals sandwiched between colour filters and
polarizing plates.
Each pixel of the display has a red, green and
blue element with a liquid crystal cell for each element. Pass light
through two opposing polarizing filters and you get darkness. Put a
layer of liquid crystals between them and their naturally twisted
structure lets light pass through.
Apply a magnetic field to the
crystal and it untwists, blocking the light once more. Applying
varying degrees of twist to each crystal creates the image you see
on screen.
LCDs are slim, lightweight, use less power and are immune
to the flicker of CRT, because they offer non-interlaced pictures.
In an LCD TV each liquid crystal cell is switched on and off
individually so the image is created as a single frame. This removes
the need to interlace fields.
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Site written by Gemma Littlemore