(Click the links to See: Our full definitions for the terms). LCD TV, which is based on a liquid crystal display (LCD). LCD displays work on the principle of blocking light rather than emitting it, which enables them to consume much less power than either CRT or plasma-based displays. Plasma TV -- In a plasma display, each pixel on the screen is illuminated by a tiny bit of plasma (which is charged gas) and the whole is encased between two thin sheets of glass. Plasma TVs are generally thought to offer a superior picture to that of LCD displays, especially for dark-room viewing, but the gap between the two is narrowing. LED TV, which is really just an LCD display technology based on light-emitting diodes (LEDs) backlighting the display instead of the cold cathode fluorescent lights (CCFLs) used in standard LCD televisions. The correct name for LED TV is LED-backlight LCD television. LEDs enable more precise lighting than fluorescent lighting and lower power use. OLED TV, which exploits the properties of organic light-emitting diodes (OLED). OLED TV is a different technology than LED TV. OLED displays don't require backlighting, which means that they use much less power than most display technologies and can be extremely thin