I believe that we all have such experience, playing mobile phone for a long time is very irritating to eyes, eyes will hurt, but why does the apple mobile phone screen not irritate eyes?
Retina screen is a high-resolution screen whose resolution exceeds the limit of human eye recognition. Apple first introduced marketing terms at the iPhone 4 conference in 2010.
Retina screen is a marketing term invented by apple. And it is used in some mobile products. The term Apple has been used since on the iPhone 4, compressing 960 & times; 640 pixels into a 3.5-inch display. That is to say, the screen has a pixel density of 326 pixels per inch (PPI), which is called 'retina screen'.
2. Widely used:
'retina screen' as a marketing concept put forward by Apple has really influenced many people's cognition. But manufacturers of screen components are not lagging behind in technology. A number of ultra polar screens with a resolution of 1920 * 1080 Full HD and a pixel density of 441 PPI or higher (pixel / inch) have appeared on the market. This screen has been applied to HTC butterfly mobile phones for the first time. It has super fine display ability, super wide viewing angle and super brightness of plasma technology.