Ortustech, a company whose founder is one of the vendors from Japan, Casio, claims to have created a screen full HD (High Definition), the smallest in the world.
Using Casio's technology, dubbed Hyper Silicone amorphous TFT (Hast), this screen has a very high number of pixels in a small field,the extent of only 4.8 inch.
Compared to the retina iPhone screen 4 that supposedly most sophisticated, these screens look better. With 458 pixels per inch (ppi), the display screen Ortustech beyond the retina that 'only' 326 ppi. Also has 1920x1080 pixel resolution, while the iPhone 4960 × 640 pixels.
Claimed addition, this screen is 30% clearer than its competitors. Then the point of view of the screen reaches 160 degrees and has 16.8 million colors.
Ortustech screen seemed to be functioning great if used in a smartphone or a gaming device. Only, do not mention whether it will eventually be marketed in electronic products.