[ELI5] What would happen if instead of using just red, green and blue, we used more pixels colors, like yellow or white?

Question

[ELI5] What would happen if instead of using just red, green and blue, we used more pixels colors, like yellow or white?

In: Technology

Answer 1

Not a whole lot.

A white LED subpixel would make a brighter white than the mixed RGB, a yellow subpixel has been experimented with, and technically adds extra “colors” available for the eye, but most people can’t see them as different from colors made by RGB.

And piling in too many subpixels in a space makes the pixels too big, losing resolution compared to just the three needed for RGB color.