The last year has been very successful for one particular newcomer to the world of high definition television – the LED TV. There is no doubt that this new breed of television looks good both aesthetically and in terms of the pictures it is capable of producing. But what is the LED TV technology behind these new TVs? However with LED televisions explained to you might be left wondered what all the fuss is about.
The big difference with LED TVs when compared to conventional LCD TVs is – lighting. First of all you should know that an LCD panel on its own does not produce light. To make the images on an LCD panel visible light must be shone through it. With conventional LCD TVs up this point the light required has been produced by cold cathode fluorescent lamps (CCFLs). These long thin lamps are situated around the edges of the LCD panel and the light is emitted behind the panel and then deflected through it to make the images on the display visible.
However with LED TVs the CCFLs have been replaced by LEDs. So really an LED TV is more accurately described as an ‘LED-lit LCD TV’. It would be understandable if you’ve been left feeling rather deceived, but there are good reasons why LEDs have replaced CCFLs.
Firstly because LEDs are capable of producing whiter light than fluorescent lights, LED TVs have a greater gamut (gamut means the range of colors that are possible). Also LEDs are brighter which improves the contrast ratios possible (this is especially so with rear-lit LEDS TVs).
Other ‘non picture’ related benefits to the use of LEDs in televisions is that because of their smaller size, LED TVs can be made designed much thinner than conventional LCD TVs. Also LEDs are more energy efficient and so reduce power consumption.
So if at first you were a little disappointed to find out what it is that makes LED TVs different, having heard the benefits that their use brings you should be assured that ultimately the viewing experience is greatly improved because of LED TV technology.
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