By Keith Sharke
What Are Plasma TVs?
They are flat panel displays that use two panes of glass to hold cells, which contain a mix of gasses inside. These displays are typically found in televisions and computer screens, along with other elctronic device displays.
When the display is powered, the gas in the cells transforms into plasma that makes ultraviolet light, and then excites the phosphors to send out perceptible light.
How do Plasmas TVs Work?
The gases inside the cells in a plasma display are xenon, neon, and helium; they are kept inside many small cells kept between two plates of glass.
Each pixel is made of three characteristic sub-pixel cells, each with its own unique colored phosphors. One red, one green, one blue; the colors combine and create general pixel color. There are many benefits to plasma technology.
When the electrodes are charged, they create a voltage difference between the front and back, which then causes the gas to ionize and turn into plasma. As the gas ions travel to the electrodes and smash together, the impact creates photons. The pixels are made of three unique sub-pixel cells, each with its own distinctive colored phosphors. One is red, one is green, and one is blue; the colors blend and produce the overall pixel color, and plasmas utilize pulse-width modulation to control image brightness.
Advantages to Plasma Television
There are many benefits to plasma image technology. These displays have a slim profile, which is lighter and less bulky than traditional televisions; as such, wall mounting is easily achieved.
Plasmas achieve improved and more genuine color production than other displays and previous display technologies. They also produce more opulent and more genuine blacks, which allow sophisticated contrast ratios. Plasma technology also makes possible much wider viewing angles that retain image quality at steep angles.
Image clarity is also superior, as now almost no motion blur is noticeable because of the exceptionally high refresh rate and quicker response time adds to the plasma display’s superior performance when projecting images with considerable amounts of rapid motion.
The Drawback Of Plasma TVs
There are problems with plasmas though. Previous plasma technology is inclined to screen burn-in and the withholding of images. This occurs when the last displayed image on the screen remains visible for a time even after the display is turned off. This is much better with the newer technology, as more recent models have green phosphors and other technologies that eradicate this problem.
In previous plasma displays, the phosphors lose intensity over time, resulting in the measured breakdown of overall image vividness. This is very disappointing, as plasma displays are not cheap, and users paid a significant amount of money for these previous displays, only to have them “wear out” fairly quickly.
Plasma displays are also more vulnerable to an occurrence known as “large area flicker”, as well as a significant amount of reflection glare in brightly lit rooms. Plasma displays are usually are not available in screen sizes less than 32 inches, they are heavier than other displays such as LCD because of the glass required to contain the gasses, and they generally use more electricity than other available technologies.
There are also problems with them working at high altitudes because of the pressure discrepancy between the gasses and air pressure at altitude, and at such heights, the screens can make a buzzing sound.
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MLA Style Citation:
Sharke, Keith "Plasma TVs – Why You Should Buy One." Plasma TVs – Why You Should Buy One. 23 Jun. 2010. uberarticles.com. 21 Jun 2015 <http://uberarticles.com/computers-and-technology/plasma-tvs-why-you-should-buy-one/>.
APA Style Citation:
Sharke, K (2010, June 23). Plasma TVs – Why You Should Buy One. Retrieved June 21, 2015, from http://uberarticles.com/computers-and-technology/plasma-tvs-why-you-should-buy-one/
Chicago Style Citation:
Sharke, Keith "Plasma TVs – Why You Should Buy One" uberarticles.com. http://uberarticles.com/computers-and-technology/plasma-tvs-why-you-should-buy-one/
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