[youtube]http://www.youtube.com/watch?v=UIeCeBwRvpA[/youtube]
The Retina Display technology is practically a high-end screen with 4 times more pixels per inch than in a normal screen, and the implementation of this technology was the basis of the exceptional quality of images displayed on the screen of the new iPhone 4. The new screen of the iPhone 4 has a resolution of 326 dpi which allows, as Steve Jobs explains, viewing an image at a distance of up to 12 inches, this being the distance up to which the human eye can perceive pixels.
All the breakthrough technology in iPhone 4 is situated between two glossy panels of aluminosilicate glass – the same type of glass used in the windshields of helicopters and high-speed trains. Chemically strengthened to be 20 times stiffer and 30 times harder than plastic, the glass is ultradurable and more scratch resistant than ever.
The iPhone 4 screen will be 3.5" like the iPhone 3GS/3G, but unlike the others, the new screen is built through an optional lamination process that involves a complex technological process through which a glass surface is laminated on the phone's display , this leads to increased durability (and resistance to scratches) and, as Apple says, leads to the elimination of light refraction in the screen.
The new technology considerably improves the way in which the iPhone 4 displays images on the display, a quality comparable to the images displayed by an AMOLED screen, however some tests in the real world between the 2 terminals remain to be seen. Here are some technical details:
- resolution of 960 x 640 pixels;
- Contrast 800:1, 4 times better than iPhone 3GS;
- IPS technology that allows clear viewing of images from different angles;
- 78% of the pixels in the iPad screen are present in the iPhone 4.
