How does a LED TV screen work?

LED. An LED screen is actually an LCD screen, but instead of having a normal CCFL backlight, it uses light-emitting diodes (LEDs) as a source of light behind the screen. An LED is more energy efficient and a lot smaller than a CCFL, enabling a thinner television screen. read more

An LED is more energy efficient and a lot smaller than a CCFL, enabling a thinner television screen. Marketing made a lot of fuss about LED TVs, but it is only the backlight that changed, so there is actually no picture quality improvement over a normal LCD screen. read more

By altering the arrangement of the liquid crystals, an LED can control how the layer transmits the light that flows from the TV's backlighting. In this way, an LED TV can generate on-screen imagery. While a traditional LCD TV relies on the same technology, an LED TV utilizes a more advanced form of backlighting. read more