Backlight refers to a lighting technique used in photography, videography, and display technology. It involves placing a light source behind the subject or screen, creating a glowing effect that can enhance the visual appeal. In photography, backlighting can produce dramatic silhouettes or highlight details in translucent objects. In display technology, backlight is crucial for illuminating screens, such as those found in LCD and LED devices. The backlight allows images and text to be visible by shining light through the display layers. This technology is essential for devices like smartphones, tablets, and televisions, improving visibility in various lighting conditions.