English full name of the LCD Liquid Crystal Display, LCD is the structure of two parallel glass in which the liquid crystal placed , two pieces of glass with a plurality of vertical and horizontal center of the small wire rod through the energization to control the crystal or molecular changes direction , reflecting the light generated screen.
LCD consists of two glass composition, thickness of 1mm, during which the liquid crystal material containing a uniform distance apart . Because the liquid crystal material itself is not light , so both sides of the screen with the lamp as a light source , and in the back there is a backlit lcd module panel ( or even light panels ) and reflective film, backlit panels are composed of a fluorescent substance can emit light , its main function is to provide a uniform background light .
Light emitted by the backlight passing through the polarizing filter layer after the first layer containing the liquid crystal droplets thousands crystal layer . The droplets of the liquid crystal layer are included in the small cell structure, one or more cells constitute one pixel on the screen . Between the glass and the liquid crystal material is a transparent electrode , the electrode is divided into rows and columns , the intersection of row and column , the voltage is changed by changing the optical state of the liquid crystal , the liquid crystal material acts like a small light valve .
The liquid crystal material is the control circuit portion and a peripheral driving circuit portion . When the LCD of the electrode generating an electric field , the liquid crystal molecules will be distorted , and thus will pass through one of the refraction of light in a regular , and then through the second layer of the filter layer filtering is displayed on the screen .
The LCD is only in recent years developed a splicing technology , its greatest advantage is its low power consumption , light weight , long life, no radiation, screen brightness uniformity , OLED Module etc., but the biggest drawback is that LCD larger patchwork . Only a fraction of a millimeter and DLP patchwork is unable to compete . The display requires very sophisticated users, a little bit of regret , which is currently only occupy LCD splicing key factor in low-end market .
To reduce patchwork , patchwork gives users reduce the interval sense , LCD manufacturers have been stitching also constantly work with. In recent years , has introduced a more narrow patchwork LCD splicing unit , from the initial 7.3mm, to 6.7mm, and then in 2011 launched a new 5.5 mm LCD splicing unit , lead the way , and continue to get a breakthrough in terms patchwork , setting off a wave of LCD splicing again and again .
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