LCD Projection
The acronym LCD stands for Liquid Crystal Display. In
order to picture the technology of a LCD better, think
of it as a modern version of an overhead projection
machine. An LCD projection device is generally made up
of three transparent panels (typically glass panels)
with each panel specifically designed to hold green, red
and blue components of a video signal.
The panels of an LCD are polarized and 'glued' together
with a special polymer layer coating to hold individual
liquid crystals. In order to operate an LCD, a current
is passed through these individual crystals enabling
these elements to transform the light and project an
image onto the screen. The crystals in a Liquid Crystal
Display do not themselves emit or produce light so an
external light source must always be provided for an
image to be created and projected.
One of the main advantages of using a Liquid Crystal
Display in a projection device is the compactness of an
LCD chip. This allows for the design of a compact and
portable unit. This is especially beneficial for people
on the go who require the use of an easily portable
projection unit. Another benefit of using a liquid
crystal display is its economical consumption of power
making an LCD relatively cost effective to produce and
utilize.
In addition, LCDs are known for their ability to produce
high image quality with resolutions of up to 1024x768
VGA. Many Liquid Crystal Display systems have also been
specifically designed for use as home like the Front
Projection TV, for example.
There are 3 main types of LCD TVs - the Flat Panel LCD
TV, the Rear Projection LCD and the Front Projection
LCD. A flat panel LCD TV is one of the lightest and
thinnest television units you can find on the market.
Rear projection LCDs tend to be much thicker in
comparison, while front projection TVs are generally
small, lightweight and easily portable. The type of LCD
projection unit you get will depend on your specific
needs and personal preference. So, if you are looking
for an inexpensive visual projection device that
produces super image quality, a device using Liquid
Crystal Display would be your best bet!
|
