LCD screens are used in many different applications, including televisions, computers, and phones. LCD screens are used in almost every device because they are the most affordable type of screen that is able to display images in high definition. LCD screens use liquid crystal displays to produce the images.The term "LCD" refers to a type of flat-panel display. LCD screens are often used in computer monitors, TVs, and mobile devices. They are made of a thin sheet of glass with electronic circuits that allow the image to be displayed. These electronic circuits are placed between two sheets of polarizing filters. One sheet is clear, and the other is polarized to only allow light that is vibrating in one direction to pass through.