World’s smallest LEDs from a new semiconductor: New LED displays packing 90nm 'virus-sized' pixels can deliver 127,000 PPI visuals. (www.zju.edu.cn)
from Tea@programming.dev to technology@lemmy.world on 24 Mar 13:36
https://programming.dev/post/27454853

#technology

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ExLisper@lemmy.curiana.net on 24 Mar 14:54 next collapse

So they can make my TV smaller? Nice.

Num10ck@lemmy.world on 24 Mar 16:59 collapse

or maybe they can make 8k per eye AR glasses?

Buffalox@lemmy.world on 24 Mar 18:38 next collapse

I think 8K can be made with 2k ppi.
That would be 4 inches or about 10cm wide screen.

Goun@lemmy.ml on 24 Mar 22:58 next collapse

Finally!

BakedCatboy@lemmy.ml on 25 Mar 17:40 collapse

The bigscreen beyond used 1 inch displays so this could be useful for getting much higher resolutions in a smaller form factor. I don’t think my Index displays are even as big as 4 inches so I guess that explains why all the super high res headsets are so huge.

Edit: my index screens are under 3", just did a lens swap so I have the old eye tubes handy

Buffalox@lemmy.world on 25 Mar 18:41 collapse

There are many considerations like FOV would be better with a bigger screen, I think 4" would probably be the max, but still that’s only at 2k ppi, there’¨s a looong way to 127K. Even with a 4k ppi screen you can do 8k view with just 2".

ExLisper@lemmy.curiana.net on 24 Mar 19:33 collapse

Maybe even 16k.

Buffalox@lemmy.world on 24 Mar 18:33 next collapse

What is the use case for 127000 PPI?
AFAIK retina start about 450 for phones, that are already pretty close view.
The closest id probably VR that can utilize 1000+. (AFAIK 2000 is REALLY good!)
But that leaves more than a factor 60 that I can’t see much of a use case for?
VR can maybe use 5000, I seriously doubt it will make any difference above that.

So where is more than 5000 necessary?

Amroth@feddit.it on 24 Mar 21:49 next collapse

Contact lenses?

Buffalox@lemmy.world on 24 Mar 21:53 next collapse

Very creative, maybe some day. But I think it will require serious developments in other areas too. Like technologies we don’t even have yet.

umbrella@lemmy.ml on 25 Mar 07:47 collapse

we already have tiny flexible screens and the means to beam video data to it wirelessly. we also have microscopic chip litography to handle it.

SeekPie@lemm.ee on 25 Mar 09:04 collapse

But no small or translucent batteries

monarch@lemm.ee on 25 Mar 09:30 next collapse

don’t necessarily need one if they are power efficent enough.

SeekPie@lemm.ee on 25 Mar 09:33 collapse

How would you power them without a battery? It doesn’t matter if it’s really power efficient if it isn’t getting any power.

monarch@lemm.ee on 25 Mar 12:16 next collapse

Wirelessly. Like an NFC tag.

Not saying it would be super practical but if you custom shaped them you could put a wire coil around all of the non seeing parts of the eye.

dzsimbo@lemm.ee on 25 Mar 17:15 collapse

Just make it sodium based, and a good crying jag will replenish the battery.

umbrella@lemmy.ml on 25 Mar 16:08 next collapse

im not saying it wouldnt be a challenge, but isnt solar panel tech possible here?

it just has to be really power efficient.

umbrella@lemmy.ml on 25 Mar 18:26 collapse

you can beam tiny amounts of it ota. it just needs to be very power efficient.

umbrella@lemmy.ml on 25 Mar 18:25 collapse

the obvious solution to this problem is running a convenient wire from your eyeball 🤪

Landless2029@lemmy.world on 26 Mar 02:04 collapse

127000 PPI e-ink display. Allows transparency.

Needs some kind of extremely tiny body heart driven power source, WiFi chip and processor…

Closer and closer to cyberpunk era tech (and oppression)

surewhynotlem@lemmy.world on 24 Mar 23:36 next collapse

VR but right up in my face?

Buffalox@lemmy.world on 24 Mar 23:59 collapse

You can’t make lenses to focus properly at shorter distances I think, or you would get an extremely narrow FOV.

[deleted] on 25 Mar 00:37 next collapse

.

werefreeatlast@lemmy.world on 25 Mar 04:41 next collapse

For Christmas tree decorations!

Buffalox@lemmy.world on 25 Mar 09:24 collapse

That’s it! An ultra fine web of microscopic lights simulating the Christmas tree shrouded in fog.
They have to hurry up and make that, I want to see what that looks like.

What a cool idea. 👍

plz1@lemmy.world on 25 Mar 04:59 next collapse

Non-human use cases, would be one. Like, having the ability for machines to “see” highly detailed imagery via camera. Just spitballing. My eyes are shit, so a screen that cool will never be of use.

Buffalox@lemmy.world on 25 Mar 09:20 collapse

Maybe, but it would be more logical to simply bypass screen to eye camera, to just transmit the signal from the original camera directly.
But hypothetically yes, that could possible be a use in a future scenario.

echodot@feddit.uk on 25 Mar 06:33 next collapse

I’m thinking lithography. The higher the DPI the smaller you can make your components.

captain_aggravated@sh.itjust.works on 25 Mar 08:39 next collapse

SLA printers would definitely benefit, provided these tiny LEDs can put out the required UV.

Buffalox@lemmy.world on 25 Mar 09:17 collapse

Maybe for low end lithography, you can’t use normal light for anything high end, already at 7nm it requires EXTREME ultra violet. And the lamps for that cost 100s of millions, to make the shortwave light necessary.

But for low end, it could possibly be used for ultra fast and cheap cycle between tape-out and production?

[deleted] on 25 Mar 19:32 collapse

.

noodles@sh.itjust.works on 25 Mar 07:04 collapse

Ig vr is getting better

Landless2029@lemmy.world on 26 Mar 02:04 collapse

Omg a VR display. Yes.