[knotimpressed]

I think a lot of these comments are missing the point-even if you have to reduce their reported density numbers by half, they made a display with dimensions of "around 1.1 cm by 0.55 cm, and around 3K by 1.5K pixels", which is insane! All without having to dice and mass-transfer wafer pieces, since every pixel is the same.

A lot of the article is focused on how this matters for the production side of things, since combining even 10 um wafer pieces from 3 different wafers is exceedingly time consuming, which I think is the more important part. Sure, the fact that each emitter can be tuned to "any colour" might be misleading, but even if you use rapid dithering like plasma displays did, and pin each emitter to one wavelength, you suddenly have a valid path to manufacturing insanely high density microLED displays! Hopefully this becomes viable soon, so I can buy a nice vivid and high contrast display without worrying about burn in.

[wmertens]

I'm really curious about the reproducibility. The color is decided by the bandgap and the bandgap is tunable by voltage, but how temperature dependent is it, and how much does production variability impact it?

I image these displays could have color sensors attached to self-calibrate.

Or the variability is low and all you need is very precise voltages.

I think the first versions will be RGB displays with fixed colors, just no longer needing mass transfer. You could use tens of subpixels per pixel, reducing all worries about color resolution.

Make these into e.g. 1x1cm mini displays and mass transfer those into any desired display size.