Older LCD TVs used cold cathode fluorescent lamps (CCFLs) to provide back lighting, whereas LED TV's used an array of smaller, more efficient light emitting diodes (LEDs) to illuminate the screen, which gave them a few advantages. Now, all LCD TVs use LED lights, and are colloquially considered LED TVs.

Aluminum cans pay differently than other types of aluminum because of certain alloys in their composition that are not in other types of aluminum. Customers are encouraged to separate their aluminum cans from other recyclable material for this reason.

Flat screen LCD and plasma screens work in a completely different way.  In a plasma screen, each pixel is a tiny fluorescent lamp switched on or off electronically. In an LCD television, the pixels are switched on or off electronically using liquid crystals to rotate polarized light.