Backlights are a type of lighting used to illuminate the background of an object or display. They are commonly found in devices like smartphones, televisions, and computer monitors, enhancing visibility and contrast. By shining light from behind, backlights help to make images and text clearer, especially in low-light conditions. There are different types of backlighting technologies, including LED (light-emitting diode) and LCD (liquid crystal display). LED backlights are popular for their energy efficiency and brightness, while LCDs use a combination of backlighting and liquid crystals to produce images. Both types improve the overall viewing experience by providing better color and detail.