Right now, Apple has a liquid crystal display (LCD) screen on the iPhone. The LCD screens currently on Apple’s phones have a backlight that’s always shining behind the screen. AMOLED screens don’t. That’s particularly true when looking at dark colours, when an AMOLED screen can cut power to any pixel that should be black. They can also be easier to see in direct sunlight and brighter than AMOLED screens, due to the backlight.
Source: thestar September 08, 2017 12:56 UTC