I+Escalante

[|Ivan Escalante]

LCD - Short for //[|liquid-crystal display.]// A low-power, flat-panel display used in many digital devices to display numbers or images. It is made of a liquid containing crystals that are affected by electric current, sandwiched between filtering layers of glass or plastic. LCDs do not produce light of their own; instead, when electric current is passed through the material, the molecules of the "[|liquid crystal]" twist so that they either reflect or transmit light from an external source. A **//l//** //iquid **c**rystal **d**isplay //, a type of display used in digital  watches and many portable computers . LCD displays utilize two sheets of polarizing material with a liquid crystal solution  between them. An electric current passed through the liquid causes the crystals to align so that light cannot pass through them. Each crystal, therefore, is like a shutter, either allowing light to pass through or blocking the light. The Monochrome  LCD images usually appear as blue or dark gray images on top of a grayish-white background . Color LCD displays use two basic techniques for producing color: //Passive matrix // is the less expensive of the two __<span style="color: darkgreen; font-family: 'Arial','sans-serif'; font-size: 12px;">t __<span style="color: black; font-family: 'Arial','sans-serif'; font-size: 12px;">echnologies <span style="color: #333333; font-family: 'Arial','sans-serif'; font-size: 12px;">. The other technology, called //<span style="color: black; font-family: 'Arial','sans-serif'; font-size: 12px;">[|thin film transistor] //<span style="color: black; font-family: 'Arial','sans-serif'; font-size: 12px;">[| (TFT)] or //<span style="color: black; font-family: 'Arial','sans-serif'; font-size: 12px;">active-matrix //<span style="color: #333333; font-family: 'Arial','sans-serif'; font-size: 12px;">, produces color images that are as sharp as traditional <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 12px;">CRT <span style="color: #333333; font-family: 'Arial','sans-serif'; font-size: 12px;"> displays, but the <span style="color: darkgreen; font-family: 'Arial','sans-serif'; font-size: 12px;"> t <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 12px;">echnology <span style="color: #333333; font-family: 'Arial','sans-serif'; font-size: 12px;">is expensive. Recent passive-matrix displays using new <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 12px;">CSTN and DSTN <span style="color: #333333; font-family: 'Arial','sans-serif'; font-size: 12px;">technologies produce sharp colors rivaling active-matrix displays. <span style="color: #333333; font-family: 'Arial','sans-serif'; font-size: 12px;">Here are some a dvantages: LCD monitors can offer the consumer considerable savings over the product’s total lifetime. In some cases, the energy-consumption of an average LCD display can be half to two-thirds of that for an average CRT.
 * Smaller size
 * Less eyestrain
 * Lower power consumption
 * Less heat generation
 * Lighter weight
 * Better image contrast

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