4K display in smartphones of the future, thanks to Sharp

The Japanese company is working to make available, in the coming years, screens for smartphones capable of matching 4K resolution of only 5.5 inches in diagonal. Maximum density, but in addition to the technological data is something useful?

The evolution of smartphones goes through the availability of increasingly sophisticated technologies. Next to SoC increasingly powerful we also display characterized by higher and higher resolutions, without prejudice to the overall size that seems increasingly to converge in larger models toward a diagonal between 5 and 5.5 inches as the average between the different proposals.

No wonder then that Sharp is working on 5.5-inch diagonal display capable of supporting a resolution of 4K, total 3,840 x 2,160 pixels, a figure four times higher, in terms of the total number of pixels on the screen, compared to those of a full HD panel.

A figure of this type implies a density of 806 pixels per inch, far higher than those generated at the time with smartphones equipped with 5-inch display combined with a resolution of 2,560 x 1,440 pixels.

The use of video resolutions opens so high. Some problems of performance, as the video subsystem coupled to the smartphone must be of appropriate power to ensure a smooth video playback even with 3D applications. More pixels composing the better screen, on paper, will be the final image quality but at the same time exceeding the amount of calculations required to the video subsystem.

One may also ask how a video resolution so high it can make a real difference to an already high as that of Full HD, thinking it to be coupled with a display from the diagonal reduced as that of 5.5 inches. That the industry is increasingly shifting to displaying high quality is good in general, but one may wonder what is the level that can be considered as adequate and over which combination of resolution and screen diagonal the end result is too pushed to have a relapse practice in terms of productivity.