Each type of monitor has its own advantages and disadvantages, such as a CRT monitor which has a brighter image but a LCD screen uses less energy. On this page we will provide information of CRT and LCD monitors.
CRT comes from the abbreviation cathode-ray tubes. CRT technology has been in use for more than 100 years, and is found mostly in televisions and computer monitors. A CRT monitor works by moving an electronic beam back and forth across the back of the screen. Every time the beam passes across the screen, it lights up the phosphor dots inside the glass tube, thereby illuminating the active portions of the screen. By drawing many of these lines from the top to the bottom of the screen creates an entire screen of images. One disadvantage of a CRT monitor is that it takes up a lot of space and is quite heavy.
LCD/Flat panel Monitors
LCD comes from the abbreviation liquid crystal display. LCD screens can be found in digital watches, laptops and computer monitors. LCD displays uses two sheets of polarizing material with a liquid crystal solution between them. An electric current passes through the liquid which causes the crystals to align so that light cannot pass through them. Each crystal, is like a shutter, either allowing light to pass through them or block the light. Color LCD displays use two basic techniques for producing color: Passive matrix is the less expensive of the two technologies. The other technology, called thin film transistor (TFT) or active-matrix, produces color images that are as sharp as traditional CRT displays, but the technology is very expensive. The advantage of having a LCD monitor is that it uses less energy and it takes very little space.