[an error occurred while processing this directive] LCD TV Buying Guide: flat screen tv ordering FAQ & Tips
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What is LCD Technology and how does it work

What is LCD
The granddaddy of all fixed-pixel displays, LCD (liquid-crystal display) technology first appeared in pocket calculators in the early 1970s. It's an undisputed jack of all trades, capable of powering front projectors, rear-projection TVs, and flat-panel displays. LCD screens have already caught on in the computer world, but they've only recently begun to make headway in home theaters. This can be attributed in part to picture-quality issues. But there are also size limitations-until recently, flat-panel LCD screens maxed out at 30 inches (diagonal), although panels as large as 54 inches have been demonstrated.

How It Works
Whether spread across a flat-panel screen or placed in the heart of a projector, all LCDs are pretty much the same. A matrix of thin-film transistors (TFTs) supplies voltage to liquid crystal-filled cells sandwiched between two sheets of glass. As with plasma panels, a trio of red, green, and blue cells make up one pixel. When hit with an electrical charge, the crystals "untwist" to an exact degree to filter light generated by a lamp behind the screen (for flat-panel TVs) or one shining through a small LCD chip (for projection TVs).
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