LCD TV and Plasma TV

As laymen, we often say plasma TV/LCD TV interchangeably. But actually, there is a whole lot of difference between the two. Wanted to find out what.


In plasma TVs, there are tiny cells between two glass plates where xenon, neon and argon gases are injected and sealed in plasma form during the manufacturing process. The gas is electrically charged at specific intervals so that gas is ionized and form plasma state. This ionized gas when hits the red, green, blue colored phosphors, they produce the colored images correspondingly.

In LCD TVs, In between two layers of transparent oppositely polarized materials, a special polymer is used that holds liquid crystals. The crystals can block or pass light according to the amount of current passed to them. Each individual picture element or pixel is divided into three red, green, blue colored subpixels. These subpixels when appropriately illuminated can produce vast array of colors. Unlike the standard CRT or Plasma, there are no phosphors to be lit. This is why the LCDs are much cooler and requires less power and there is no radiation from the screen.


The plasma TV sizes range from 32 inches to 65 inches and the LCD TV ranges from 14 inches to 46 inches though more larger sizes of both are readily available. The comparative prices for the larger size plasmas ( ~ 52 inches) are lesser than same sized LCD TVs. On the other hand, the smaller LCD TVs ( ~ 32 inches ) are cheaper than the same sized plasmas.


The small sized LCDs have more pixels packed into them than the plasmas. The small sized Plasmas are not so good at displaying high resolution pictures as they have less number of pixels per square inch.

Therefore, from the above, if you want to buy a smaller screen, LCDs are preferable and for larger screen sizes, plasmas are the better bet.

Read this article for more inputs.


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