Apple iPad Review (PHOTOS): 9 Worst Things About The Apple Tablet: "While the iPad's display has been praised as crisp and sharp, its screen -- LED-backlit with In-Plane Switching (IPS) -- has its downsides. The iPad's screen is not as power efficient as OLED devices, which don't drain batteries as quickly. Moreover, LED screen tends to be harder on the eyes than the e-ink screens used on eReaders such as the Kindle. (Some users even find prolonged exposure to LED-backlit screens to be migraine-inducing.) The Telegraph predicts that because of the iPad's screen, 'I don't think serious bookworms will be swayed to chose the iPad over the Kindle or a Sony Reader."