Home General Knowledge GK SPECIAL TOPIC : LIQUID CRYSTAL DISPLAY (LCD) TV
GK SPECIAL TOPIC : LIQUID CRYSTAL DISPLAY (LCD) TV
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Tuesday, 08 July 2014 03:33



 


LIQUID CRYSTAL DISPLAY (LCD) TV

• Liquid crystal display (LCD) TVs work by trapping a liquid crystal solution between two sheets of polarized glass. One of the layers is coated with a special polymer that holds the individual liquid crystals.

• Current is then passed through individual crystal cells, which allow the crystals to pass or block light to create images.

• LCD panels do not generate light - rather they filter or subtract light produced by a backlight source to create the image on the panel surface.

• Unlike Plasma televisions, there are no phosphors that light up, hence, less power is needed for operation and the light source in an LCD TV generates less heat.

• Although LCD televisions do not suffer from burn-in susceptibility, it is possible that individual pixels on LCD televisions can burn out, causing small, visible, black or white dots to appear on the screen. Individual pixels cannot be repaired, the whole screen would need to be replaced at that point.

• Screen surface on most LCD TVs is less reflective than Plasma TV screen surfaces, making it less susceptible to screen glare.


 

 





 

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