LED TVs – What is LED TVs?
LED TVs – What is LED TVs?
LED TVs are the newest technology in HDTV. LED stands for Light Emitting Diode. By using multiple LEDs around the edge of the screen, rather than a simple backlight that is used on an LCD screen, colour and contrast quality is dramatically improved.
LED technology converts electrical energy into light that can dim, brighten or turn off when required. LED gives black tones a far more authentic look and gives colours a far greater range of subtlety resulting in far more life like images and eradicating the loss of clarity experience with an LCD screen that can turn black into a washed out grey. LED TVs are slightly more energy efficient (or use less power) than plasmas and conventional LCD TVs. LED lights are also mercury free, protecting the environment.
The advantages of LEDs compared with fluorescent backlights are:
- LED’s are smaller.
- They are energy efficient, produce little heat
- LEDs can be used in groups such that if one LED burns out, the remaining LEDs will still produce light.
- LED TVs usually produce deeper blacks and higher overall colour saturation, (since fluorescent bulbs have a smaller optical frequency output range).
- LED TVs that use edge-lighting can be very thin. (Edge-lighting can result in a loss of screen uniformity compared to back-lighting.)
- LED TVs may potentially also result in more environmentally friendly waste over normal LCD TVs (which contain mercury vapour in the fluorescent lamps that are used). Whilst the components of
- LEDs are generally more inert than fluorescent lamps, they do however still contain other toxic materials such as arsenic (Gallium Arsenide) and are not considered a much better long term solution to the problem of TV disposal.
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