LED TVs - A Beginner's Guide

Anyone who knows about technology also knows the salespeople in shops can be surprisingly ill informed concerning the products you can purchase. If you've ever been told that creating a four core processor quadruples the speed of your PC or that the 600Hz subfield drive is 10 x better than 60Hz refresh rate you'll know that sometimes the sales staff know little more than what's written around the product and therefore are just as prone to jump to (inappropriate) conclusions as anyone else. This article is here to assist you gain a better idea of how LED TVs work. It does not contain any tips or recommendation but can give basic information to boost your overall knowledge.

How do LED TVs work?

It is a common misconception that LED TVs work with an entirely different technology than LCD panels. This has largely come to pass because industrial and commercial LED screens exist who use clusters of LEDs for every pixel. However domestic "LED" TVs are in reality LCD screens designed to use LEDs for backlighting (rather than cold cathode fluorescent lamps (CCFL) which are more popular).

What will be the advantages of LED TVs

There are many advantages to using an LED backlit LCD TV in comparison to using a CCFL backlit model. These include;

• A greater dynamic contrast - Which in human terms signifies that blacks are blacker.

• The potential to be extremely thin - LED back lighting consumes significantly less space than other methods which ensures that this type of TV may be less than one inch thin.

• Potential for wider colour gamut - Depending on the technology used you will find the potential for LED TVs to possess a far wider colour gamut than non LED models. This comes down to making blues and greens more vibrant compared to what they would be otherwise.

• Cheaper running costs - Because they are more cost effective than just about any light source LEDs are less expensive to run. For an average TV this normally means knocking a fifth off of the annual running cost.

• Less environmental damage - CCFL backlighting necessitates the use of mercury which implies that disposal could be particularly damaging to the environment.

• Better viewing angles - LCD TVs are notorious for being affected by narrow view angles (i.e. in the event you tilt the screen it looks funny) but there are rumours that LED TVs have problems with this less and to a certain extent this is but largely down to the fact that LED technology is often used only on flagship and luxury models - which by their very nature generally been better engineered.

Can LED TVs do 3D?

No. As a rule the TVs with 3D capability include the flagship and quite a few premium models produced which ensures that almost without exception they normally use LED backlighting so it can be fair to state that all 3D TVs use LEDs however, not all LED TVs are 3D

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