How big can they get? You could be looking at up to 60ft! And because they are designed to work outside these displays are also incredibly bright so they can be viewed by large crowds easily during sunny days.
LEDs (Light Emitting Diodes) are very small colored light bulbs. Modern LEDs are small, extremely bright and use relatively little electricity given their light output. Other places you now see LEDs used outdoors are on car brake lights, traffic lights and torches. They have a great lifespan and are very eviromentally friendly in terms of power consumption.
So how do they create a TV picture? On a regular CRT TV, red green and blue phosphor dots make up each pixel on the screen - these combine to make the colours that form the pictures.
On an LED TV 'pixel modules' contain red green and blue LEDs. A small pixel module might have 1 red, 1 green and 1 blue LED and a particularly large TV might have a 4cm pixel module containing several LEDs of each colour. Thousands of these pixel modules are then laid out in the format of the desired screen to create the TV.
As with all Televisual technologies, prices are dropping all the time and it won't be long before we start seeing LED TVs providing plasma beating images, lasting longer and providing brighter, more colourful pictures in our living rooms. We will be tracking the technology here on this website and reviewing products as they come to market as well as comparing them to existing tech.
