For TVs, the generally accepted resolution of 4K is 3840 x 2160 pixels, or exactly four times the pixel count of 1080p, or Full HD. This increased pixel density offers sharper images, more detail ...

The 56-inch set boasts a native 3,840 x 2,160 OLED panel ... image response time and rich images produced even at wide viewing angles, all packaged in a large 4K resolution panel.

Quite simply, this refers to a specific screen resolution — 3840 x 2160 — which is four times (hence the “4”) the amount of pixels you’d find on a non-4K display. 4K Ultra HD is the name ...

How Many Pixels Are We Rendering? 11,520 x 2160 consists of 3 x 4K monitors, with each monitor running 3840 x 2160, combining all of the resolutions together for the massive 11,520 x 2160 resolution.

Samsung may or may not be planning to cram an Ultra HD display in its upcoming Galaxy Note 5 smartphone. But sooner or later someone is probably going to release a smartphone with a 3840 x 2160 ...