LEDs (light-emitting diodes) are increasingly used to provide backlighting for LCD televisions. While marketed as a new type of television screen, LED TVs are not actual LED screens but the same LCD screens as most modern televisions using a different type of illumination. Using LEDs behind the screen or at the edges uses less power than fluorescent lights and also provides deeper dark colors, as light doesn't leak out of the LEDs. As a selling point, a television's use of LED is typically displayed on the screen.
Know the year of production, or purchase, of the television. LED televisions first started entering the home electronics market in 2005, so if the television was manufactured before then, it is not an LED TV.
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Check the front of the television for a sticker that indicates if it has an LED display. LED backlighting is a major selling point for many electronics manufacturers, so that fact is typically displayed on the front of a new television.
Locate the model number on the back of the television. Typically, this is found on a sticker with the manufacturer's name, make and model number and other information. Use this information to research the television and determine whether it uses LED backlighting.