sony bravia plasma
LCD Vs Plasma TVs; The Essential Decision
Flat screen TVs are now commonplace in many homes. The most popular forms of these televisions are plasma and LCD. But as a consumer which can be considered the best choice? Hopefully the following article will highlight some of the fundamental differences between the two technologies and how this affects the buyer.
First and foremost it is important to understand the different processes involved in both plasma and LCD technology. While these types of TV may look the same, within there are completely different processes at work producing an image. Apart from both being thin and attractively styled, they have few similarities.
A Plasma TV utilises a system of miniscule plasma gas cells that are charged by electrical current to create changes in UV light. This light is then filtered through phosphorus gasses of each primary colour to make an image. LCD TV screens on the other hand resemble an electronic sandwich, with liquid crystals between two 'slices' of glass. Once again varying electrical current is applied to the crystals in order to create an image.
One of the major benefits that LCD TVs have over plasma variants is native resolution. This industry term simply refers to the number of pixels on the screen and in this particular instance means that LCD TVs have a higher resolution in terms of pixels than plasmas of a similar size.
One of the most touted benefits of LCD TVs is that they consume far less power than plasma varieties. This has become an increasingly important point in recent months as EU directives on energy consumption have come to the fore in electronic companies' thinking. It is estimated that some models of plasma TV used thirty percent more power than a LCD of a similar size; the result has been some commentators labelling plasma TVs as the four by fours of the home.
It is also evident that LCD screens tend to have a longer lifespan than plasma models. Early models apparently lose half of their brightness after a measly twenty thousand hours although the latest varieties boast a lifespan of thirty to sixty thousand viewing hours. On the other hand, the average LCD TV typically has a guaranteed sixty thousand hour lifespan.
Screen burn is one of the more commonly highlighted problems with plasma TVs although this is becoming less of an issue. That said, even modern plasmas do suffer from screen burn, a result of a continuous image being shown on the screen and leaving a residual ghost image when viewing other channels. LCD TVs do not suffer from this problem at all.
So which should consumers buy? LCD or Plasma? This decision depends upon the size of the screen. In the majority of cases plasma TVs are better in larger sizes, for example those above fifty inches whereas LCD variants are better in smaller sizes. That said, those with an environmental conscience will be easily swayed by an LCD due to their lower power consumption and subsequent ecological validity. Additionally the longer lifespan of LCD televisions make them a better value buy although this is really a minor consideration. Ultimately the choice is down to the consumer but with plasma TVs apparently on the wane it is understandable that more people will see the benefits of LCDs in the future.
About the Author
Audio Visual expert, Donald Donaldson, takes a look at the differences between plasma and LCD TV technology . Find out more about
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