Liquid crystals are a unique state of matter that exhibit properties between those of liquids and solid crystals. They can flow like a liquid but have some degree of order in their molecular arrangement, which allows them to manipulate light. This property makes them useful in various applications, particularly in display technologies. One of the most common uses of liquid crystals is in LCD (Liquid Crystal Display) screens, found in devices like televisions, computer monitors, and smartphones. In these displays, liquid crystals change their orientation when an electric current is applied, controlling the passage of light and creating images.