What is CRT, LCD and Plasma TV?

CRT TV

CRT or cathode ray tube televisions have been in production since the very beginning of the TV era. Productions of tubes from 5" diagonal to 40" diagonal have been accomplished and allow for a very inexpensive option for video displays in home theater systems. Although these products do not normally offer options to increase their resolution, they may be used in modest systems with good results.

LCD

ProjectorLCDs or Liquid Crystal Displays are designed for front or rear projection in conjunction with a screen similar to those required for slide or movie presentations. These devices include a projection lamp, an adjustable focal-length lens, and a special solid state panel that allow the video image to pass through the lens and illuminate the screen. These projectors are approximately double the cost of most rear projection sets; however most units are bright enough to allow for screen sizes in the 80" to 100" diagonal ranges. When making the choice to utilize any front projection device, it's important to note that a dark room must be maintained to achieve a proper black level. The screen to projector relationship is variable within ranges specified by the manufacturer, thus allowing for flexibility in placement.

Plasma TV

This new technology utilizes a unique display panel that alleviates the need for a cathode ray type picture tube. At the present time this type of TV is somewhat expensive. A major benefit of the plasma display is that it has been sized to accommodate new HDTV 16:9 aspect ratio's and is similar in pixel resolution to a personal computer monitor, thus allowing drastically improved picture clarity.

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