Edge Lit
When a TV is “edge Lit”, this refers to the picture being lit up by small lights placed around the edges of the screen with reflectors to help the light reach the centre.  This was introduced to allow designers to create a thinner looking TV to keep up with the style of the future.  By placing the LED lights on the edge of the TV, this takes away the bulging light that is used on LCD TVs causing the back casing of the TV to be thicker.  Although this is a good looking and energy efficient way of lighting up your TV, this leaves space for a minor drawback such as equal distribution of lighting.

Full Back Lit
If you have a TV which is “back lit”, this would mean your TV    contains loads of uniform lights spread out equally around the whole of your TV screen.  The Full back lit screen was designed specially to improve the picture quality by lighting up certain parts of the TV more than others, an example of this would be, In a scene where the Moon and the dark night sky are in one big shot, the moon would need more lighting whilst the lights showing the sky would need to dim to give you a realistic view of the dark and light image. Whilst this is an improvement on the “edge lit” TVs this also has one minor drawback known as “the halo effect”, this is visible when a dark and light image meet in the same scene (using the same moon and sky scene) the Moon will be lit up by more than one light, as the edge of the moon meets the dark sky, you will have a bright shining light next to a very dim background causing a ray of light to shine into the darkness. 

OLED is the newest technology when it comes to TVs.  It offers incredibly accurate colours with its perfect blacks being the huge selling point of this feature, as well as its ability to be super thin and unbelievably light. This has become possible by changing the way the TV gets light from its LED’s.  OLED has the ability to make beautiful pictures by offering highly accurate colours with the darkest of blacks. When an “LED” TV shows the colour black, it tends to be a dark misty colour due to the backlight on the TV still shining through. With the OLED technology, the TV simply displays the colour black by switching off individual pixels (saving energy) allowing the picture to display a lifelike darkness creating the perfect scene. 

While all 3 technologies are advanced, the OLED sets itself above the rest by offering perfect colour, picture and quality.  With consumers demanding perfection, there is no other technology that brings you closer to REAL life like colour whilst also saving energy.  Not only does the film buff benefit from these amazing colours, gamers will find it opens up a whole new world to dark gaming, seeing creatures jump out from dark scenes adds to the immersive experience avid gamers crave.