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LED stands for Light-Emitting Diode. It consists of a semiconductor diode which when energized emits light in a process called electroluminescence.

There are currently two forms of LED television:

LCD televisions use liquid crystals to create an image but they require a light source behind the crystals. Traditionally, fluorescent lamps have been used as the light source but some later models are using white LEDs as the light source. They tend to be thinner that other LCD models but the imaging technology remains the same.

A handful of televisions are now using red, green and blue LEDs in each pixel and are illuminated as required to create an image. Because the LEDs emit light there is no need for additional lighting sources. Response times for LEDs are far faster than LCD although they can be problematic when displaying very dark images. Because this type of imaging requires no additional light source, they have the capability to reduce power consumption compared to LCD and are likely to become a standard for television displays in the coming years.

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8y ago

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