TV LED: guide to choosing the right model
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Around the TV LED is still much confusion and little information. Here is a guide that sheds light on this new technology.
Premise: A TV LED, LCD TV, if you want to clarify further doubts you can read this article.
We are not faced with a new technology and we are not even talking OLED, things are totally different. When we read “LED TV” we are talking about an LCD TV that uses LCD backlight as a variable number of LEDs (depending on the technology and models) instead of traditional fluorescent bulbs.
Why is there so much confusion and misinformation around the LED? Simple: there are today several technologies LED backlight, and for each of these you can identify some exceptions. The purpose of this guide / article is to explain everything there is to know about TV LED and see what models are available in the market that use LED technology.
LED: why should
The LED TV today costs more than one TV with traditional backlighting, and the reason is undoubtedly the increased cost of production compared to LED lamps. But there is to add one detail: a LED consumes far less than a traditional LCD (also 40% less) and a longer life, even if the lamp life is usually more than enough to complete one cycle product life.
The LEDs, however, also affect the performance of the TV providing a better contrast with the use of technologies such as Edge and the Local Dimming LED color rendering and more convincing and accurate.
Finally LEDs also influence the design and construction processes: thanks to the LEDs you can build very thin TV, with thickness in some cases also testify about 6-7 millimeters.
Full LED technology
The first television to have a Full LED backlight is the Samsung LE40M91. When it comes to technology, Full LED means the adoption of a panel backlight using LEDs instead of lamps. The two photos below will help explain the shape of a backlight lamp, and instead made as a full LED backlight.
In a TV Full LED backlight panel using a set of LEDs arranged in a regular and equidistant to create a single lamp. Making a full panel LED is simpler because it is also easier dissemination system: between the LEDs and the LCD panel is made only a small diffuser that evenly distributes the light.
Without this fact, the image you would see virtually maculata, full of small dots at the LEDs. Usually the back of a TV Full LED uses a thousand LEDs, all equidistant between them. It ‘important to strike the right number of LED: if they put it on TV just loses uniformity, if they put too much the image becomes too bright.
Full LED technology does have a limitation: the impossibility of achieving very thin screens. To avoid “staining” is in fact necessary to keep a certain distance between the panel LEDs and the LCD panel. Some manufacturers use special lenses to silicone is able to reduce this distance, but at present nobody has yet succeeded in creating TV Full Led really thin.
The TV Full LEDs are all the same?
In the field of TV Full Led must distinguish different product categories: those using local dimming technology and those who do not use it, those who use RGB LEDs and those that use regular white LEDs. By combining these four elements we obtain all the different technologies available Full Led
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3 Comments
June 17th, 2010 at 7:22 am
LED TVs are still expensive but my dad bought me one last month.“~
July 25th, 2010 at 5:49 pm
LED Tv’s are more expensive than traditional LCD TVs which are having some massive price drops.~:.
September 10th, 2010 at 5:44 am
i have seen some LED TVs and they do offer more contrast than LCD TVs`~;