this post was submitted on 31 Mar 2025
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Researchers develop 90-nanometer LEDs for future ultra high-resolution displays (www.techspot.com)
submitted 2 weeks ago* (last edited 2 weeks ago) by [email protected] to c/[email protected]
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[–] [email protected] 2 points 2 weeks ago (2 children)

Ok, so is there a pick and place machine that can place these accurately at scale?

[–] [email protected] 4 points 2 weeks ago (1 children)

Creating nano-PeLEDs, however, was no simple task. Perovskite materials are notoriously fragile and susceptible to damage during conventional photolithographic processes used to pattern LED displays. To overcome this, the research team developed a novel fabrication method involving lithographically patterned windows in an insulating layer. This technique protects the delicate perovskite material while preserving high image quality.

They're creating a whole display panel, not individual components.

[–] [email protected] 2 points 2 weeks ago

Right, so scale is limited to a wafer. Which probably makes sense because the super high resolution does not make sense for larger panels.

[–] [email protected] 1 points 2 weeks ago (1 children)

I would have expected them to be grown in place, are these really discrete components? Yeesh.

[–] [email protected] 2 points 2 weeks ago (1 children)

The article indeed shows/mentions a fabrication method with lithographic techniques. The question then is, can that technique scale to larger monitors or is that limited (by wafer size) to small screens, like those for VR-goggles? Perhaps the super high resolution does not even make sense in larger screen applications like monitors. That would require assembly of several 'chiplets' at great precision.... probably cost prohibitive.

[–] [email protected] 1 points 2 weeks ago

Imagine the processor powering that... even 8k at 32million pixels gets extremely intensive on processing power

16k resolution you are looking at over 100mil independent pixels