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Meet QDEL, the backlight-less display tech that could replace OLED in premium TVs (arstechnica.com)

submitted 5 months ago by [email protected] to c/[email protected]

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[–] [email protected] 97 points 5 months ago* (last edited 5 months ago) (19 children)

The fact that quantum dots are already being successfully applied to LCD-LED and OLED screens is encouraging for future QDEL products. QDEL stakeholders claim that the tech could bring efficiencies like lower power consumption and higher brightness than OLED. (Research using a prototype device has recorded quantum dot light-emitting diodes reaching 614,000 nits. Of course, those aren't the type of results you should expect to see in a real-life consumer product.)

614,000 nits

That's fucking insane. HDR 1400 displays are at least 1,400 nits. 614,000 nits seems like you'd be staring at the fucking sun.

There's also hope that QDEL could eventually last longer than OLED, especially since QDEL doesn't rely on organic materials that can cause burn-in.

Tbh the burn-in issue is the reason why I don't like OLEDs as computer monitors. I know phones and TVs don't tend to have major burn-in issues, but the fact that it exists sucks. TVs have a variable-enough image that long-term use isn't an issue imo, and even the most thrifty person will probably end up replacing their phone every 4~6 yrs. However, I'm used to having computer monitors be long-term things. My last monitor lasted about 10yrs before it died.

As it stands, QDEL displays would become noticeably dimmer more quickly than today's OLED displays.

Aw, that's disappointing. At the same time though, if they're able to get even 10% of the 614,000 nits on commercial units, then they'd have to lose a significant amount of brightness to dim to current display levels.

But optimists believe QDEL display lifetimes could one day be on par with LCD-LEDs and outlast OLEDs.

Yeah, I hope so too.

[–] [email protected] 57 points 5 months ago* (last edited 5 months ago) (7 children)

So the formula for nits to Lumen is below:

N=L/3.426

614,000 = L / 3.426

2,103,564 Lumens

Bruh...

1m² of the sun is 127,000 Lumen. This TV is at most 2 m². It'd certainly be the last thing you ever saw.

[–] [email protected] 3 points 4 months ago (1 children)

I checked the linked paper and sadly this brightness reduced the cell lifetime from over 5000h at 100 Nits to just around 5h.

So unless they find some magic, even better chemistry this TV as bright as the sun won't happen.

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