In South Korea, there's a never-ending war between Samsung and LG for display superiority. The latest salvo fired comes from the latter, which announced an astonishing new smartphone IPS-LCD panel yesterday. The 5.5-inch prototype screen uses a WQHD resolution of 2560x1440 (seen elsewhere on 27-inch monitors). The density is 538 pixels per inch, the highest of any mobile screen to date.

And the density isn't the only record that this screen sets.