A "backlit screen" refers to a device screen that is illuminated from behind. This lighting method helps make the screen easier to see in darker environments. Full definition
Those of us who have spent decades reading on backlit screens were happy when a truly matte non-illuminated screen appeared with the first ereaders. (goodereader.com)
Unlike backlit screens of tablets, eInk reads like a paper, so it is very readable in direct sunlight. (ereadertech.com)
Gone is the annoying glare from backlit screens in earlier eBook readers or on PDAs that strain the eyes. (goodereader.com)