A Retina Display is a type of device display used by Apple.
The brand name Retina Display is used by Apple to describe screens that have a higher pixel density than previous screens.
The aim of Retina Displays is to make the display as clear as possible, with text and images so clear that pixels are not visible to the naked eye. This sharpness allows displays to mimic the appearance of printed text and photos.
Who makes Retina Displays?
No one manufacturer makes Retina displays and different suppliers currently make Retina Displays for various Apple Products. For example, Samsung have supplied iPad displays, while LG makes MacBook Pro, iPhone and iPod Touch displays.
Steve Jobs, when launching the iPhone 4, said that a Retina Display needed 300 PPI for a device held 10 to 12 inches from the eye. Pixels-per-degree (PPD) is used as a way to express this as a unit, which takes into account both screen resolution and how far away the device is being viewed from. Taking Jobs’s predicted 300PPI, the threshold for a Retina Display starts at 57 PPD.