Each pixel consists of a column of liquid crystal molecules suspended between two transparent electrodes, and two polarizing filters, the axes of polarity of which are perpendicular to each other. Without the liquid crystals between them, light passing through one would be blocked by the other. The liquid crystal twists the polarization of light entering one filter to allow it to pass through the other. The molecules of the liquid crystal have electric charges on them. By applying small electrical charges to transparent electrodes over each pixel or sub-pixel, the molecules are twisted by electrostatic forces. This changes the twist of the light passing through the molecules, and allows varying degrees of light to pass (or not pass) through the polarizing filters. Before applying an electrical charge, the liquid crystal molecules are in a relaxed state. Charges on the molecules cause these molecules to align themselves in a helical structure, or twist (the "crystal"). In some LCDs, the electrode may have a chemical surface that seeds the crystal, so it crystallizes at the needed angle. Light passing through one filter is rotated as it passes through the liquid crystal, allowing it to pass through the second polarized filter. A small amount of light is absorbed by the polarizing filters, but otherwise the entire assembly is transparent. When an electrical charge is applied to the electrodes, the molecules of the liquid crystal align themselves parallel to the electric field, thus limiting the rotation of entering light. If the liquid crystals are completely untwisted, light passing through them will be polarized perpendicular to the second filter, and thus be completely blocked. The pixel will appear unlit. By controlling the twist of the liquid crystals in each pixel, light can be allowed to pass though in varying amounts, correspondingly illuminating the pixel. -DJ Craig
LCD Televisions are known to be cheaper and come in the most sizes. In fact, the LED television is an improved and different version of the LCD. Best Buy has a fantastic selection of electronics and LCD Televisions (and employees do not work on commission, so, they will not pressure you into buying something ridiculous).
1. Toshiba REGZA 52RV530U 52 in. HDTV LCD TV 2. Sharp AQUOS LC-52D62U 52 in. HDTV LCD TV 3. Samsung LNT5265F 52 in. HDTV LCD TV 4. Sony KDL-40V3000U 40 in. HDTV-Ready LCD TV 5. Sony KDL32L4000 32 in. HDTV LCD TV 6. Panasonic TC-32LX85 32 in. HDTV LCD TV 7. Sharp LC-32SH12U 32 in. LCD TV 8. Vizio VU32L 32 in. HDTV LCD TV 9. Syntax-Brillian LT27HVS 27 in. LCD TV 10. Memorex MLTD2622 26 in. LCD TV TV/DVD Combo
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