What are LED TVs?
Some people even include LED TVs to this list, even though they are nothing new, but variants of LCD TVs which replaced CRTs. Simply put, what the manufacturers refer to as LED TVs are actually LCD TVs with LED backlighting, instead of CCFL backlighting that is used in normal LCD TVs (see LED HDTV vs LCD HDTV). Taking this fact into consideration, the correct term for such television sets will be LED-backlit LCD TVs. LED TVs are further categorized into three different types on the basis of where the light-emitting diodes are placed - Dynamic RGB LEDs, White Edge-LEDs and Full-array LEDs.
What is Edge-lit LED TV?
As their name suggests, edge-lit LEDs are LCD televisions in which light emitting diodes are arranged along the four sides of the screen in form of tiny strips. Even though the source of light is arranged along the edges, a specially designed panel directs the light from the edge of the screen to the center, thus producing uniform color range across the screen. This is in stark contrast of full-array LED TVs wherein the light emitting diodes are arranged behind the display. As the light emitting diodes which act as the light source are arranged along the edges, instead of exactly behind the screen, LED televisions end up being approximately 40 percent thinner than their full-array LED counterparts.
The depth of these television sets - which is somewhere around an inch or even less, makes wall-mounting of these sets a lot easier. While they are already inexpensive as compared to full-array LED TVs, being thinner also reduces the shipping cost on these television sets. While these are some advantages of LED TVs which give them an edge when it comes to edge-lit LED TV vs backlit LED TV debate, there do exist some problems that also need to be taken into consideration when opting for the same. When we talk about the edge-lit LED TV problems, the foremost thing to take into consideration is the black levels. As the light source in these televisions is arranged at the edge of the screen, they can't pull off the amazing black levels that a full-array LED TV can.
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