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What is the full form of LED?

What is the full form of LED television and also AMOLED?
and which is better and why?

Asks Dipak Kumar

Answer: LED stands for Light Emitting Diode.

LED TVs are actually LED backlit LCD TVs.
Instead of fluorescent tubes, LEDs shine light from behind the screen, illuminating the pixels to create an image. Due to the small size and low power consumption of LEDs, LED-backlit TVs are far thinner than regular LCD sets and are also more energy efficient. They can also provide a wider color gamut, producing more vivid pictures.
LCD TVs still use cold cathode fluorescent tubes to project a white light onto the pixels that make up the screen. Those add weight and thickness to the television set. LEDs solve both problems.

AMOLED stands for active-matrix organic light-emitting diode. It is a display technology for use in mobile devices and televisions.

Light-emitting diode (LED) #1
Light-emitting diode (LED)

An AMOLED display consists of an active matrix of OLED pixels that generate light (luminescence) upon electrical activation that have been deposited or integrated onto a thin film transistor (TFT) array, which functions as a series of switches to control the current flowing to each individual pixel.

 

Read more at http://en.wikipedia.org/wiki/AMOLED

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