[zokier]

Traditional displays (such as what would be used in vr goggles) do not produce yellow light. You only get reddish-green with rgb colors

[AstralStorm]

Technically you could make such an extended gamut OLED screen, 4-stimulus. Probably RBGY variant. Some such screens are on the market already but they do not really produce superior results. Some phone screens use RBGW pattern too.

[BenFrantzDale]

Not really, if you look at the CIE chromaticity diagram, you’ll find that the experience of spectral yellows are very closely approximated by an RGB monitor. It’s spectral cyan that is really out of gamut for a standard display. Take a photo of a green traffic light (which is a little cyan so colorblind people can see it’s not red). I’m pretty sure that green-light color is out of gamut for most displays. https://en.wikipedia.org/wiki/SRGB

[jpindar]

Your comment inspired me to look at my phone under a microscope (I opened a paint program's color picker).

As with many things I have examined under a microscope, I didn't actually learn anything new, but it was still interesting to see for myself.

[matte_black]

Crap, guess we’re stuck with reddish green :(