You can also use a ton of small leds for the backlight, like the display Apple calls the ‘Liquid Retina XDR’ display and there’s probably a world of controller software to improve on for years.
Which is what the LCD-TV industry did for years.
It's no longer economic, except maybe in specific high-margin industries (like medical displays)
But even in those areas I'm confident that its existing tech, I doubt that there's alot of investment going on.
WOLED panels are on a trajectory from Premium to High-Tier with production volume increasing each year, with RGB-OLED increasing in panel-size each year as well. The window for investing into R&D for a large-volume LCD-panel which outperforms OLED in accuracy but at a lower price has already closed.
The generic term for this is mini-led which is not to be confused with micro-led. Apple is expected to start using MicroLED displays within a couple years.
