How does LCD save power?

LCD (Liquid Crystal Display) saves power primarily by using a backlight that illuminates the screen, which can be adjusted for brightness. Unlike older display technologies such as CRTs, LCDs do not emit light themselves; instead, they manipulate light from the backlight to create images. Additionally, LCDs can turn off individual pixels or sections of the screen when displaying darker images, reducing overall energy consumption. This efficiency makes LCDs particularly advantageous for battery-operated devices like laptops and smartphones.