LCD panels, or Liquid Crystal Display panels, are flat screens commonly used in televisions, computer monitors, and smartphones. They work by using liquid crystals that change alignment when an electric current passes through them, allowing light to pass or be blocked. This technology enables vibrant colors and sharp images while consuming less power compared to older display types like CRT (Cathode Ray Tube) screens. These panels are made up of several layers, including a backlight, polarizers, and the liquid crystal layer itself. LCD panels are known for their thin design and lightweight, making them ideal for portable devices. They are widely used in various applications, from consumer electronics to industrial displays.