My understanding is that lot of the limitations of current LCD color gamuts stem from the quality of backlight used. That is why for example quantum dot technology is used to reproduce the wider rec2020 colorspace, because the spectrum of quantum dots is better suited for rgb filtering.
Although now that rec2020 is nearly an achieved goal, I do suspect that going beyond it requires more primaries as others have mentioned. Sharp experimented with a yellow primary, but that effort was fairly limited.
For oled I imagine the situation is much worse as more constraints in making the leds there.
Although now that rec2020 is nearly an achieved goal, I do suspect that going beyond it requires more primaries as others have mentioned. Sharp experimented with a yellow primary, but that effort was fairly limited.
For oled I imagine the situation is much worse as more constraints in making the leds there.
Some references
https://www.nature.com/articles/lsa201743
https://pcmonitors.info/articles/the-evolution-of-led-backli...