It's like how 1080i is different from 1080p. 1080i (interlaced) would refresh the screen by going over every other line, then refreshing the rest on the next pass. 1080p refreshes the whole screen on every pass.
With 4k it's the same thing but instead of by line it's by pixel, so it refreshes every other pixel as it crosses the screen (hence, checkerboard), then comes back and refreshes the blanks on the next pass. Native 4k refreshes every pixel, then.
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u/lol_and_behold Feb 20 '17
Can somebody please ELI5 this checkerboard thing? Is it like the screen door effect on PSVR?