Saturday, August 04, 2007
The advantages of LCD screens include the fact that they can be made fairly thin which means that they're a type of flat panel display and can be mounted on a wall or take up less space on a table. The fact they're thin means that it's possible to have a larger LCD screen in a smaller room than with projection screens or cathode ray tube screens. LCD screens also tend to be more efficient than many other types of technology.
Plasma screen TV sets are another popular flat panel HDTV technology. Instead of using crystals to filter light, Plasma screens are comprised of tiny pockets of gas that glow different colors depending on the electrical current applied to them. Each pocket of gas is a pixel in the screen. The fact that these pixels can change colors extremely rapidly or go dark completely means that Plasma screen TV's aren't plagued by blurring problems and can produce very deep black. While they do have those advantages, they tend to have a number of disadvantages like the fact that they're energy hogs, they cease to produce as bright of a picture relatively rapidly, and they tend to make an annoying buzzing sound when they're being used above six thousand feet above sea level.
Digital Light Processing or DLP is another popular technology. It also produces an extremely responsive picture with rich colors because it's based on technology in which tiny mirrors positioned on a chip reflect light at different wavelengths to display an image on a screen. DLP has the disadvantage of only being useful for projection screen TV applications instead of flat panel displays, so they tend to take up a lot more room, but DLP technology also provides the interesting opportunity of being used in a projector that can project light onto screens up to fifteen feet wide. If you want an extremely large picture, DLP technology will give you the most inches (or feet) per dollar.
While there are always new technologies arriving on the market, these are the ones of choice for displays.