A Liquid Crystal Display (LCD) is a flat-panel technology used to produce images on screens. It works by manipulating light through liquid crystals, which are substances that can change their optical properties when an electric current is applied. This allows for the creation of images by controlling the light that passes through the display. LCDs are commonly found in various devices, including televisions, computer monitors, and smartphones. They are known for their energy efficiency, slim design, and ability to produce sharp images with vibrant colors. LCD technology has largely replaced older display types, such as cathode ray tubes (CRTs), due to its advantages in size and performance.