Tough one , really.
The first oneAlternatively, applied electrical signals uncoil the crystals, causing the filters to block light and the pixel to become opaque
The second oneThe amount of power required to untwist the crystals to display images is much lower than that required for analogous processes using other technologies, such as plasma.
the third one LCDs that are capable of producing color images, such as in televisions and computers, reproduce colors by blocking out particular color
...
The first oneAlternatively, applied electrical signals uncoil the crystals, causing the filters to block light and the pixel to become opaque
The second oneThe amount of power required to untwist the crystals to display images is much lower than that required for analogous processes using other technologies, such as plasma.
the third one LCDs that are capable of producing color images, such as in televisions and computers, reproduce colors by blocking out particular color
...
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