4 ms·

Makes sense, but I hope that there’s meaningful progress on microLEDs soon. While OLED burn-in has improved a lot, it’s still a concern for the lengths of time

Makes sense, but I hope that there’s meaningful progress on microLEDs soon. While OLED burn-in has improved a lot, it’s still a concern for the lengths of time that people keep screens for… my 5 year old VA panel TV still looks identical to the day that it was unboxed after thousands of hours of usage at high brightness, and I’d hope any TV replacing it would be capable of the same or better. Same goes for monitors.

porphyra 3y ago
microLEDs also have * better linearity * smaller size (that is, the light comes from a tiny pinpoint in the middle of the pixel rather than a whole rectangle being lit up). This actually helps make the display look a lot sharper.
- rsaxvc 3y ago
  You don't want small pixels. This causes optical aliasing and associated problems. Edit: By small pixels I mean a low pixel aspect ratio(area of lit pixel vs total area per pixel). If you consider this as a DSP problem(instead of a time series problem, a brightness value over distance or angle), there's effectively no reconstruction low pass filter. You can think of small lit pixel area with larger distance between like zero padding. This can make some things appear sharper, but by doing so it'll appear less like the image source wants it to.
  - H8crilA 3y ago
    No, the perfect pixel is a sinc() function of appropriate bandwidth. A pixel of the form "dot with a dark area around it" is a better approximation of sinc() than pixel of the from "fill all the available space evenly". And it doesn't mean the bright part of a pixel should be as small as possible, no, it should be tuned for bandwidth. Even eye receptors (cones) approximate sinc() in the same fashion.
    - rsaxvc 3y ago
      Sure, but at least for RGB subpixel displays common to LCD TVs, each subpixel has neighboring dark-area not only in the form of the black matrix, but effectively also that of the two other colors.
  - rsaxvc 3y ago
    I said pixel aspect ratio, but what I meant was pixel aperture ratio. I hope that's clear from the context.
aidenn0 3y ago
I have a 12 year old LCD panel. Do OLEDs have similar longevity?
- Gigachad 3y ago
  I know someone who uses an ancient samsung oled phone which they had left on overnight regularly for youtube for years and that had the faintest of burn in only visible on a pure white screen. It's really not something I'd be concerned about.
  - rocketbop 3y ago
    Overnight YouTube videos? For sleeping to?
    - bee_rider 3y ago
      Makes sense to me; I like to listen to a podcast while falling asleep. I bet you could also find nice background noise YouTubes, rain and whatnot.
  - agumonkey 3y ago
    As a kid, our Sony trinitron also ended up having burn-in due to leaving it on with a fixed NES game screen. Fun cycle.
  - fomine3 3y ago
    YouTube is not bad use case for burn in. Static UI is.
    - Gigachad 3y ago
      They had it in the half screen view so some of the UI had mildly burned in
- opan 3y ago
  The Samsung Galaxy S III is 11 years old and had an AMOLED screen (does that still count as OLED?). People are still using them with custom ROMs somewhat, and I haven't heard of display issues. There's also the first revision PlayStation Vita that had an OLED screen and is a similar age. I have heard of yellowing on some models, unsure how prevalent burn-in is. Of people I know with a Vita or several, most got a second gen only, or switched to a second gen and so the old one didn't get used as much. Much less old, there's the Switch OLED, and WULFF DEN on YouTube has one he's leaving constantly turned on to see what happens to the screen. I think we're 1.5 years in or so and he's done a handful of videos showing what it looks like now. https://www.youtube.com/watch?v=7TMyUDKqWWI https://www.youtube.com/watch?v=7TMyUDKqWWI

porphyra 3y ago

microLEDs also have * better linearity * smaller size (that is, the light comes from a tiny pinpoint in the middle of the pixel rather than a whole rectangle being lit up). This actually helps make the display look a lot sharper.

rsaxvc 3y ago
You don't want small pixels. This causes optical aliasing and associated problems. Edit: By small pixels I mean a low pixel aspect ratio(area of lit pixel vs total area per pixel). If you consider this as a DSP problem(instead of a time series problem, a brightness value over distance or angle), there's effectively no reconstruction low pass filter. You can think of small lit pixel area with larger distance between like zero padding. This can make some things appear sharper, but by doing so it'll appear less like the image source wants it to.
- H8crilA 3y ago
  No, the perfect pixel is a sinc() function of appropriate bandwidth. A pixel of the form "dot with a dark area around it" is a better approximation of sinc() than pixel of the from "fill all the available space evenly". And it doesn't mean the bright part of a pixel should be as small as possible, no, it should be tuned for bandwidth. Even eye receptors (cones) approximate sinc() in the same fashion.
  - rsaxvc 3y ago
    Sure, but at least for RGB subpixel displays common to LCD TVs, each subpixel has neighboring dark-area not only in the form of the black matrix, but effectively also that of the two other colors.
- rsaxvc 3y ago
  I said pixel aspect ratio, but what I meant was pixel aperture ratio. I hope that's clear from the context.

aidenn0 3y ago

I have a 12 year old LCD panel. Do OLEDs have similar longevity?

Gigachad 3y ago
I know someone who uses an ancient samsung oled phone which they had left on overnight regularly for youtube for years and that had the faintest of burn in only visible on a pure white screen. It's really not something I'd be concerned about.
- rocketbop 3y ago
  Overnight YouTube videos? For sleeping to?
  - bee_rider 3y ago
    Makes sense to me; I like to listen to a podcast while falling asleep. I bet you could also find nice background noise YouTubes, rain and whatnot.
- agumonkey 3y ago
  As a kid, our Sony trinitron also ended up having burn-in due to leaving it on with a fixed NES game screen. Fun cycle.
- fomine3 3y ago
  YouTube is not bad use case for burn in. Static UI is.
  - Gigachad 3y ago
    They had it in the half screen view so some of the UI had mildly burned in
opan 3y ago
The Samsung Galaxy S III is 11 years old and had an AMOLED screen (does that still count as OLED?). People are still using them with custom ROMs somewhat, and I haven't heard of display issues. There's also the first revision PlayStation Vita that had an OLED screen and is a similar age. I have heard of yellowing on some models, unsure how prevalent burn-in is. Of people I know with a Vita or several, most got a second gen only, or switched to a second gen and so the old one didn't get used as much. Much less old, there's the Switch OLED, and WULFF DEN on YouTube has one he's leaving constantly turned on to see what happens to the screen. I think we're 1.5 years in or so and he's done a handful of videos showing what it looks like now. https://www.youtube.com/watch?v=7TMyUDKqWWI https://www.youtube.com/watch?v=7TMyUDKqWWI