Samsung News Geek

So an LED TV is still an LCD TV. It just uses LED's to light the LCD screen instead of using the CCFL or FLourescent backlights.

There are a couple of major different types of LED TV's you can shop for:

Edge Array Vs Full Array

Full Array - This version has the LED's placed directly behind the LCD screen and they light up the screen from the back.

Edge Array - In order to make the TV slimmer, the manufacturers began running the LEDs around the four edges and then running "light guides" to the back of the LCD screen.

Local Dimming Options - Some of the higher-quality LEDs provide local dimming which enables "zones" to be made darkr and lighter in order to improve the contrast and sharpness of the image.

Refresh Rate - This is how much the information displayed on the screen is updated. While this can reduce eye-strain, its biggest value is for gamers who need the most up-to-date information possible. 60 Hertz (Hz) is what all of the old TV's used, and I've got to say that I am noticing a huge difference with the higher, 120 Hz refresh rate on my new LED TV.

The higher rates help reduce blurring, and, if you are gaming, can help you see things that you miss on a TV that has a lower refresh rate. For example, if you are playing a First Person Shooter game that is running at 100 FPS, then there are about 40 frames that you are missing every second by playing on a lower hertz screen. Crucial for maintaining that competitive edge.

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