Screen technologies refer to the various methods and materials used to display images and videos on devices like televisions, computers, and smartphones. Common types include LCD (Liquid Crystal Display), LED (Light Emitting Diode), and OLED (Organic Light Emitting Diode). Each technology has its own advantages, such as brightness, color accuracy, and energy efficiency. These screens work by manipulating light to create images. For instance, LCD screens use a backlight to illuminate liquid crystals, while OLED screens emit their own light, allowing for deeper blacks and better contrast. Understanding these technologies helps consumers choose the right display for their needs.