The Advantages Of Buying An LCD TV
There is a lot of confusion between plasma and LCD TV. Read this article to understand why the LCD TV is better.
What does LCD TV mean and how does it function? LCD stands for liquid
crystal display. Behind the screen are a number of pixels followed by a
fluorescent light. When this light falls on the pixels, an electric
current is generated, creating light variations, which make up the
vividly colored images that we see. Generally, the twisted nematic
liquid crystal is used which has a naturally twisted crystalline
structure.
The screen size of an LCD TV varies between 13-46 inches and it is
about 2 inches deep in thickness. They are very light and so extremely
easy to install. This indicates that they require very little space and
come with a very sleek look. In fact, they can very well be compared to
the fragile beauty of a woman!
Next is the consideration of the `burn-in` factor. LCD TVs are not
susceptible to `ghosting` which results due to premature dying out of
the pixels. The uniquely twisted crystals do not allow `burn-in` or
`ghosting` to happen.
There has been a marked improvement in the refresh rate or response
time of LCD TVs. Previously, the images tended to lag behind and stay
on screen for a period of time that was much more than necessary.
Recent technological advances have put all that behind. Usually, the
response time varies with the size and quality of the LCD TVs.
The contrast ratio in the more advanced LCD TVs is 1000:1. The contrast
ratio is measured by the ratio between the brightest white to the
darkest black. The scenario has improved here too. Research is on to
push the ratio well past the 1000:1 mark.
Sixty-thousands hours is the average life span of an LCD TV. So at an
average viewing of 8 hours a day, an LCD TV should last for about 20
years. The life span of an LCD TV is dependent on the back-light. Since
it uses a liquid crystal, there is nothing else which can wear out
other than the back-light. Technology has found a way around this
problem by creating replaceable back-lights as well.
Power consumption, which is perhaps a very important aspect, has a
definite advantage in case of LCD TVs. LCD TVs utilize fluorescent
back-lighting and so power consumption is low and steady.
LCD TVs are unaffected by changes in air pressure. This makes it a
favorite among air travelers. The performance is consistent and the
picture flawless, regardless of the altitude of the airplane.
There is much talk about mercury being used for the fluorescent
lighting. But, the manufacturers will vouch-safe for the fact that a
nominal amount of mercury is used. This mercury does not come in
contact with the viewer and so is entirely harmless.
Some manufacturers are trying to incorporate picture-in-picture feature
in their monitors. This feature enables a viewer to see one program on
the full TV screen while a few other programs can run in small windows
in it. The viewer gets the added advantage to watch a particular
program, while waiting for the intermittent advertisements to end in
another window.
Experiments are on to extend color reproductions in LCD TVs. The idea
is to use two back-lights with slightly differing intensities of colors
in consecutive frames. This will enable the viewer to experience a
better and a more vivid picture using a more precise color variation.
An LCD TV is a whole new experience , the flavor of which can be savored
only by purchasing one. The advantages are manifold and the experience
is just exotic. Indulging in one is a worthy bargain.
About the author
Roberto Sedycias works as IT consultant for PoloMercantil
