What technology do LCD screens use to display images?

LCD screens use Liquid Crystal Technology to display images. This technology operates by utilizing liquid crystals, which are substances that have properties between those of liquids and solid crystals. When an electric current passes through the liquid crystals, they align in ways that either allow light to pass through or block it, creating the images seen on the screen.

In an LCD, a backlight provides illumination, and the liquid crystals adjust according to the input signal, modulating the light to generate various colors and images. This technology is efficient and allows for thin screen designs, making it widely used in televisions, monitors, and other display devices.

Other technologies mentioned, such as LED Technology, actually refer to a type of backlighting used in some LCD screens, rather than a distinct method of image display. Cathode Ray Technology is associated with older CRT displays, while Fiber Optic Technology is used for data transmission rather than image display in screens.