New 4.5 inch display by Hitachi surpasses the Retina display on the Apple iPhone 4
Hitachi's subsidiary, Hitachi Displays, has developed a 4.5 inch LCD screen that can be called a Retina display because at 329 pixels per inch, it surpasses the iPhone's 326 pixels per inch reading. Using an LED backlight, Hitachi's screen can produce resolution of 720 x 1280 and a contrast reading of 1100:1 (vs. 800:1 for the iPhone). According to Hitachi, the display reaches the "limit of what is discernible to the human eye".
Hitachi plans on starting production of the display in October which means by the time it reaches the market, the calendar will have flipped to 2012. In the meantime, there are plenty of brilliant and sharp screens already available or on the way to the market.