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Comment by oblio | Hacker News Reader

I don't care much about average panel degradation.

I do care about seeing ghost letters or shapes on top of the latest TV series I'm watching.

Edit: The QLED article is from 2019, that's quite a few yers ago for cutting edge tech. I imagine tech is constantly improving.

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You might be interested in the RTings longevity test which is exactly about that. The current round is playing CNN for 20 hours a day for 2 years, and they already have some results at the 6 month mark.

https://www.rtings.com/tv/tests/longevity-burn-in-test-updat...

Thanks!

This is a great overview demo of current panels! You can already see some very slight degradation in some of LGs OLEDs, but many of the Sony/Visio (and Samsung) OLED panels.

The others mostly look like standard LCD and DDI/Flex defects rather than burn-in so far.

You'll be fine with any of the existing technologies of today. In either case you will see luminance degradation over time, in case of LED-LCD or QLED also color-shifts of backlight zones.

But none of this is new. In reality, I barely heard people complain about their LCDs becoming more and more weak in brightness and color-tinted (usually yellow) each year. And yet, all of this happened to 100% of all LED-LCD panels.

> Edit: The QLED article is from 2019, that's quite a few yers ago for cutting edge tech. I imagine tech is constantly improving.

Yeah, there's alot of research ongoing to improve QD lifetime as a foundation for new LED technology. Here's one from Dec.2022 [1], and one from as late as 2023 [2], all with the subject of solving performance stability of the technology to become on-par (!) with common LED.

[1] https://pubs.acs.org/doi/full/10.1021/acsaelm.2c01351

[2] https://pubmed.ncbi.nlm.nih.gov/36990060/

You're missing the point:

> I don't care much about average panel degradation.

> I do care about seeing ghost letters or shapes on top of the latest TV series I'm watching.

Nobody cares about "luminance degradation", they just dont want ghosting

I think the point you're trying to make is you can calibrate away LCD backlight luminance degradation because it's uniform across the panel. And you don't notice because your eyes adapt to the whole screen.

With OLED, not so much. OLED does have tech to compensate based on total pixel usage. You might see that if you tried to change a panel without the electronics. I'm not aware of how widespread it is, but I know iphones can do it.

No I did not. Check the first sentence of my reply: "You'll be fine with any of the existing technologies of today."

And "ghosting" are artifacts on fast movement due to a lag in panel refresh, it's something entirely different.

> You'll be fine with any of the existing technologies of today

I think you're going too far with your statement. OLED/qd-oled and to a lesser degree WOLED all suffer from significant burn-in, which makes them pretty bad for desktop use.

Previous LCD technologies will degrade over the years by losing luminance and color accuracy, but that's a pretty minor issue compared to OLED as far as I'm concerned.

From context, you know the post is talking about ghosting from image retention, not ghosting from motion blur. Please don't be pedantic. We're not all versed in the terminology.

I'm pretty sure that on HN, being pedantic is basically required by law.

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