Japan Display Incorporated has demonstrated three prototype displays called "Innovation Vehicles," which combine the latest and most advanced mobile display technologies from Sony, Toshiba, and Hitachi.

The three prototypes demonstrated are a 5-inch Full HD smartphone display with a pixel density of 438 pixels per inch (ppi), a 7-inch WQXGA tablet display with a resolution of 2,560 x 1,600 pixels at 431 ppi, and a 12.2-inch, 1,920 x 720-pixel car display. The displays all feature Japan Display Incorporated's (JDI) new technologies called WhiteMagic and Pixel Eyes, designed to provide low-power panels with incredible resolutions.

When HTC announced its new "J Butterfly" phone last month in Japan, the feature that caught everyone's eye was by far the display: a 5-inch panel with a resolution of 1,920 x 1080 pixels. HTC will reportedly have two suppliers for its ultra-sharp panel: Japan Display Incorporated and Sharp.

The new displays JDI has shown off seem to be even better than the J Butterfly's. The 5-inch panel has the same resolution of 1,920 x 1080 pixels, but it also features the new WhiteMagic and Pixel Eyes technologies.

WhiteMagic was first shown off back in February, in the Sony Xperia P. While a regular display packs three sub-pixels - red, green, and blue - a panel with WhiteMagic technology has an additional white sub-pixel, which allows for a brighter screen and better outdoor visibility.

Meanwhile, the second technology called Pixel Eyes is basically a display with the touch panel built-in rather than as a separate layer. This technology can also be found in Apple's new-generation smartphone, the iPhone 5.

When it comes to 7-inch screens, Japan Display also showed off a display with a resolution of 2,560 x 1,600, the same resolution as the recently unveiled Nexus 10 device. Being smaller, JDI's 7-inch display is sharper, packing a whopping pixel density of 431 pixels per inch (ppi). Just like its 5-inch sibling, the 7-inch panel also features the Pixel Eyes and WhiteMagic technologies.

It remains uncertain at this point, however, just when these two displays will find their way into retail products. For now, JDI created prototypes to demonstrate in a bid to attract customers and boost orders. If all goes according to plans, JDI can begin mass production next year, but it is unclear when next year.

While some people may wonder why would one even need such high resolution displays, Japan Display Incorporated knows that things can always be brighter, faster, sharper, thinner, and better. When it comes to specs, today's tech-driven world is rapidly evolving, and products always have room for improvement. If HDTV standards have advanced to the new Ultra HD, why shouldn't smaller displays have the same stellar trajectory?