Question by : Are LED and LCD tv’s categorized under “plasma screen TVs”? If they’re not, then how are they related?
Please help out a newb!!
+10 pts 
Best answer:
Answer by kg7or
No. A plasma screen consists of a bank of tiny gas-filled cells that illuminate and change color when controlling voltages are applied.
An LCD screen is a bank of liquid crystals, like a digital watch, that form a picture with the application of controlling voltages. They give off no light, so they are illuminated from behind by a backlight. In older or cheaper sets, generally referred to as “LCD,” the backlight is a fluorescent lamp.
An “LED” set is exactly the same as an LCD set, except the backlight is an array of light emitting diodes.
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