Placed Between Glass

• The basis of liquid crystal display (LCD) technology lies in the properties of liquid crystal. In its standardized form, liquid crystal can be polarized, and an LCD display can be created when opposite polarized glass is placed on either side of liquid crystal. A network of electrodes is placed behind the glass, which can activate the liquid crystal, pixel by pixel. However, at this phase you cannot see anything because light must be added to make the liquid crystal visible.
  
  

Backlight Illuminates the Display

• A specialized backlight will illuminate the liquid crystal display, which is created by the electrode pulses. This backlight is generally fluorescent in nature and must be diffused by a specialty white panel before illuminating the liquid crystal. This ensures uniform brightness across the LCD screen.
  
  

Color Is Added

• At this stage, a complete grayscale image has been made, but now color must be added. Color is added to an LCD display through a special color filter that is placed before the crystal layer, which can modify the color of the pixel, using combinations of red, green and blue. This sublayer can use either passive matrix, which is used in low resolution LCD displays and has an extra layer of polarized LCD, or active matrix, which is used in high resolution TVs and uses pixel-based transistors to control the color filters.