Here’s An Opinion On:
Submitted by: Gloria Gangi
Finding the right television is a lot harder today than it used to be. Plasma, LCD and LED television sets are all HD TVs, each employing technologies closely related to one another. Plasma television technology utilizes separate pixel cells that waken xenon and neon gases via electrical pulses and conserves the right balance of blue, green or red phosphors held within each cell. LCD screens, on the other hand, employ crystal diode technology. The diodes are placed in the middle of two separate sheets of glass in a liquid state. The only differentiation between LCD TVs and that of LED screens is the backlight. Whereas LCD TVs use fluorescent CFL lights, LED technology employs Light Emitting Diode (LED) bulbs.
There are two main sources of back lighting for LED TVs; edge lighting and local dimming. The TV panels are constructed very thin and bordered by light emitting diodes in the case of edge lighting. Local dimming, on the other hand, allows one to manage the back lighting by assembling LED lights behind the TV panel. The contrast and vividness of blacks can be controlled by reducing the amount of back lighting in darker sections of the screen and increasing it in brighter sections.
Picture Quality
Typically, Plasma TVs are viewed as one of the better HD televisions around, and work best in normal lighting conditions. On the other hand, LCD TVs function better in brightly lit spots, for instance, a breakfast room. The degree of contrast in LCD televisions has been improved upon with the use of LED technology, though. Brightly lit areas are more commonly found in places such as airports and retail stores, making LCD monitors more suitable for public presentations.
One of the main problems with LCD technology, the back lighting would be prevented from passing through the panel, and as a result, create dark tones. However, a solution was found in local dimming, one of the main means of backlighting for LED televisions. Compared to Edge-lit LEDs, the whites will not show up as strongly in LCD television sets. LEDs will also display more color accuracy and better viewing angles in contrast to LCDs.
Quick-Moving Video Playback
Plasma TVs handle quick-moving pictures better than LCD and LED televisions. The motion response time doesn t perform as well for the latter, suffering somewhat from minor lags and blurring. The motion blur problem has since been reduced with the recent refresh rate of LED television.
Computer Use
LCD screens don t have a problem displaying motionless images. Details of colors would still appear completely with no indications of screen burn, even with superfluous use. Plasma TVs cannot. Eventually, the television would show evidence of screen burn with continuous use, but the timing of this is dependent mainly on the manufacturer s anti-burn technology.
Longevity
The manufacturers of both LED and LCD screens have stated that the display times last for 100,000 hours. That is, the display lasts only as long as the backlight. The fluorescent CFL backlighting may still last awhile, but once it becomes old the white balance will change. On the other hand, you have Plasma TVs. These use noble gas glow technology instead, and last only half as long in comparison. When the phosphoric rudiments fade out, it would no longer work.
Power Usage
LED TVs powered with local dimming backlights need more energy than similar sized LCDs, nearly equal to that of Plasma televisions, while Edge lit LED TVs need less energy than that of LCDs in the same size range.
Plasma TVs are slightly better quality in terms of contrast, when it comes down to HD TV. That doesn t mean though that LCD and LED technologies aren t determined to deliver the same level of superiority in the future.
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Plasma televisions
,LED and Full
HD LCD TV
and Vivo Televisons
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