• Buffalox@lemmy.world
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    2 days ago

    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?

    • Echo Dot@feddit.uk
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      1 day ago

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

      • Buffalox@lemmy.world
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        1 day ago

        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?

    • plz1@lemmy.world
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      1 day ago

      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
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        1 day ago

        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.

      • Landless2029@lemmy.world
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        12 hours ago

        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)

      • Buffalox@lemmy.world
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        2 days ago

        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
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          1 day ago

          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.

            • umbrella@lemmy.ml
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              20 hours ago

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

              • SeekPie@lemm.ee
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                1 day ago

                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.

                • umbrella@lemmy.ml
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                  20 hours ago

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

                • monarch@lemm.ee
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                  1 day ago

                  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
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                    21 hours ago

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

                • umbrella@lemmy.ml
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                  22 hours ago

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

                  it just has to be really power efficient.

      • Buffalox@lemmy.world
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        1 day ago

        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. 👍

      • Buffalox@lemmy.world
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        2 days ago

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