liquid crystal display - ορισμός. Τι είναι το liquid crystal display
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Τι (ποιος) είναι liquid crystal display - ορισμός

DISPLAY THAT USES THE LIGHT-MODULATING PROPERTIES OF LIQUID CRYSTALS
Computer display/LCD; Liquid Crystal Display; LCD; LCD computer monitor; LCD display; Liquid crystal displays; LCD Screen; LCD panel; Color LCD; LCD monitors; LCD screen; Lcd display; Lcd; Lcd screen; Liquid Crystal display; LCD displays; Bistable display; Mura defect; LC display; Mura effect; LCD panels; Advanced Fringe Field Switching; Fringe Field Switching; LCD Display; LCD module; Flexible liquid crystal display; Liquid crystal display; LCD screens; Fringe field switching; Zero-power LCD display; Liquid crystal (LC) display; History of LCD technology; History of liquid-crystal displays
  • An LCD screen used as a notification panel for travellers
  • Prototype of a passive-matrix STN-LCD with 540×270 pixels, Brown Boveri Research, Switzerland, 1984
  • Close-up of a corner of an IPS LCD panel
  • LCD-Glass-sizes-generation
  • 18 parallel CCFLs as backlight for a 42-inch (106 cm) LCD TV
  • Structure of a color LCD with an edge-lit CCFL backlight
  • How an LCD works using an active-matrix structure
  • A comparison between a blank passive-matrix display (top) and a blank active-matrix display (bottom). A passive-matrix display can be identified when the blank background is more grey in appearance than the crisper active-matrix display, fog appears on all edges of the screen, and while pictures appear to be fading on the screen.
  • chevron]] shape is used to widen the viewing cone (range of viewing directions with good contrast and low color shift).
  • A pink elastomeric connector mating an LCD panel to circuit board traces, shown next to a centimeter-scale ruler. The conductive and insulating layers in the black stripe are very small.

liquid crystal display         
¦ noun an electronic visual display in which the application of an electric current to a liquid crystal layer makes it opaque.
liquid crystal display         
<hardware> (LCD) An electro-optical device used to display digits, characters or images, commonly used in digital watches, calculators, and portable computers. The heart of the liquid crystal display is a piece of {liquid crystal} material placed between a pair of transparent electrodes. The liquid crystal changes the phase of the light passing through it and this phase change can be controlled by the voltage applied between the electrodes. If such a unit is placed between a pair of plane polariser plates then light can pass through it only if the correct voltage is applied. Liquid crystal displays are formed by integrating a number of such cells, or more usually, by using a single liquid crystal plate and a pattern of electrodes. The simplest kind of liquid crystal displays, those used in digital watches and calculators, contain a common electrode plane covering one side and a pattern of electrodes on the other. These electrodes can be individually controlled to produce the appropriate display. Computer displays, however, require far too many pixels (typically between 50,000 and several millions) to make this scheme, in particular its wiring, feasible. The electrodes are therefore replaced by a number of row electrodes on one side and column electrodes on the other. By applying voltage to one row and several columns the pixels at the intersections are set. The pixels being set one row after the other, in {passive matrix} displays the number of rows is limited by the ratio of the setting and fading times. In the setup described above (known as "twisted nematic") the number of rows is limited to about 20. Using an alternative "supertwisted nematic" setup VGA quality displays (480 rows) can be easily built. As of 1995 most notebook computers used this technique. Fading can be slowed by putting an active element, such as a transistor, on the top of each pixel. This "remembers" the setting of that pixel. These active matrix displays are of much better quality (as good as CRTs) but are much more expensive than the passive matrix displays. LCDs are slimmer, lighter and consume less power than the previous dominant display type, the cathode ray tube, hence their importance for portable computers. (1995-12-09)
liquid crystal display         
also liquid-crystal display (liquid crystal displays)
A liquid crystal display is a display of information on a screen, which uses liquid crystals that become visible when electricity is passed through them.
= LCD
N-COUNT

Βικιπαίδεια

Liquid-crystal display

A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers. Liquid crystals do not emit light directly but instead use a backlight or reflector to produce images in color or monochrome. LCDs are available to display arbitrary images (as in a general-purpose computer display) or fixed images with low information content, which can be displayed or hidden. For instance: preset words, digits, and seven-segment displays, as in a digital clock, are all good examples of devices with these displays. They use the same basic technology, except that arbitrary images are made from a matrix of small pixels, while other displays have larger elements. LCDs can either be normally on (positive) or off (negative), depending on the polarizer arrangement. For example, a character positive LCD with a backlight will have black lettering on a background that is the color of the backlight, and a character negative LCD will have a black background with the letters being of the same color as the backlight. Optical filters are added to white on blue LCDs to give them their characteristic appearance.

LCDs are used in a wide range of applications, including LCD televisions, computer monitors, instrument panels, aircraft cockpit displays, and indoor and outdoor signage. Small LCD screens are common in LCD projectors and portable consumer devices such as digital cameras, watches, calculators, and mobile telephones, including smartphones. LCD screens have replaced heavy, bulky and less energy-efficient cathode-ray tube (CRT) displays in nearly all applications. The phosphors used in CRTs make them vulnerable to image burn-in when a static image is displayed on a screen for a long time, e.g., the table frame for an airline flight schedule on an indoor sign. LCDs do not have this weakness, but are still susceptible to image persistence.

Παραδείγματα από το σώμα κειμένου για liquid crystal display
1. ARTICLE S–LCD Corp., a liquid crystal display (LCD) joint venture between Samsung Electronics Co.
2. Merrill said the share price should be supported by greater competitiveness in liquid crystal display televisions.
3. A 32–inch liquid–crystal display with HDTV capability was pegged at 387 kWh per year.
4. The company cited cost cuts in its liquid crystal display operations.
5. The EL panel has attracted considerable attention as a possible next–generation replacement for today‘s liquid–crystal display.