What's the difference between LCD, LED and Plasma televisions?
Answer by Paul
LCD (Liquid crystal Display) uses a solid florescent back light to light up individual pixels in different ratios between red, green, and blue to get your colors. The color black is achieved by blocking the light in a certain pixel, but the problem here is that you can never get true black with LCD screens because there is still a light on behind it making the color actually more of a charcoal gray.
LED tvs work the same way. That is why LED tvs are actually technically called LED-LCD tvs. They use one of two back lighting schemes, and they use LED lights instead of florescent. The first type is edge lighting which uses a light on the four edges of the screen to light all the pixels on your tv. In this type of lighting you still run into color contrast issues and your blacks are never truly black. The other type is called local dimming LED tvs which use a grid of LED lights behind the pixels. This is the best because certain LED lights or cluster of lights can be turned off for your black color while other lights remain on for your other colors. In local dimming LED tvs you get a far better contrast ratio and a better picture quality overall.
Plasma tvs work differently. Behind every pixel there is a chamber that houses the plasma gas and when that gas is excited it causes that pixel to light up. Depending on the combination of red, green, and blue depends on what color you see, and to achieve black the pixel is simply not illuminated at all. This means that your blacks are truly black and your contrast ratio on plasma's is far better then LCDs and about the same (if not better) then local dimming LED tvs.
The pros and cons to each LCD and Plasma are:
LCD Cons: Narrower viewing angle, less contrast, less vibrant colors, and most models use a slower refresh rate causing image ghosting at times.
Plasma Cons: Uses a glass screen so glare is a potential problem in well naturally lit rooms, screen burn can be a problem, they are heavier and not capable of taking much abuse. The life of a plasma is also significantly less than LCD and it uses more energy to run it.
LCD Pros: No glare problems really so they work in just about any room, they use less energy and LED-LCD tvs use even less. They are lighter and are capable of more wear and tear so they are better for commercial applications. Screen burn is not a problem. And the higher end LCDs have good picture quality and refresh rates.
Plasma Pros: Wider viewing angle so every seat in the house is a good seat. Better contrast and more vibrant colors for a better picture quality (In my opinion). High refresh rates so fast pace games and movies tend to look great on plasma's.
I hope that helps you. If I had a choice between the three I would probably go with plasma only because recording technology hasn't really caught up with what LED tvs can do. I often find that LED tvs make everything look fake, and I personally like the picture quality of plasma tvs, but that's just me.
Know better? Leave your own answer in the comments!
New LCD LED Plasma Tilt TV Wall Mount 37 40 42 46 47 48 50 52 55 57 58 60 65 3KR
|US $34.90 (0 Bid)|
End Date: Tuesday May-21-2013 16:48:20 PDT
Bid now | Add to watch list