An LCD (Liquid Crystal Display) is a flat-panel technology used in various electronic devices, including monitors, TVs, laptops, and smartphones. It employs liquid crystal molecules that react to electric currents, altering their alignment to control the passage of light. This manipulation of light allows the display to create images and colors.

LCDs offer advantages like slim profiles, energy efficiency, and the ability to produce sharp images with high resolutions. They are commonly used due to their versatility and widespread availability. However, newer technologies like OLED and AMOLED have been developed to address some of the limitations of LCDs, such as limited contrast and viewing angles. Despite this, LCDs remain popular and are found in a wide range of devices, serving as essential components in modern electronics.