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d21lewis on 24 April 2012
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archbrix said:
Cobretti2 said:
1.  People need to stop calling LCD that are either back lit (top and bottom only) or edge lit by LEDs an LED tv.

2.  true LED tvs are OLED. These are the ones just coming out and cost an arm and a leg.

3.  saying that for me LCD edge lit LED is the way to go atm. Samsung is best looking so far.

1.  LCDs that are LED back-lit are NOT top to bottom only; the LEDs are behind the screen, hence the name "back" lit.  Both edge and back-lit LEDs ultimately pass the light through the LCD panel from behind.  The difference between them is where the LEDs are mounted; along the edges or behind the panel.  And yes, it is correct to refer to these TVs as LED because they ARE LED TVs, which brings me to your next point...

2.  No.  LED and OLED are not the same in that they work in different ways.  Unlike LEDs which rely on edge or back lighting, OLED displays emit the light themselves.  Those aren't even available for the consumer mass market beyond about 11 inches right now; we're talking about LED lit LCDs here, which yes, are referred to as LED TVs.

3.  Edge-lit LED-LCD screens can be thinner than back-lit, but back-lit (also known as full-array) screens have far better local dimming and offer a much better contrast ratio.  Most edge-lit models don't even feature local dimming (even some back-lit models don't).  Ergo, back-lit with local dimming offers the best picture. 

Thank goodness you replied before I did.