News Insulated blue light-emitting diodes could banish OLED burn-in for good

[Admin]

Researchers at the University of Cambridge have developed a new OLED technology that can potentially kill off OLED burn-in for good.

Insulated blue light-emitting diodes could banish OLED burn-in for good : Read more

 

[The Historical Fidelity]

Interesting, I hope Samsung adopts this for their next gen oled panels.

 

[hotaru251]

putting anything between display and diode makes me question the cost of "blue" as you will be blocking it so it WILL lose some of its color output.

 

[tennis2]

I read somewhere that there are red and green PHOLEDS, but not blue PHOLEDS until very recently (not in any panels yet).
Since Samsung QD-OLED panels only use blue OLEDs, I believe this is why they currently have worse burn-in issues than LG OLEDs.

(someone correct me if I'm wrong)

 

[Alvar "Miles" Udell]

However, a new OLED design philosophy created by researchers at the University of Cambridge and reported by Nature has the potential to kill off burn-in for good.

Not quite correct. It would be more appropriate to say "increase the durability of the blue sub-pixel to reduce the risk of burn-in to a point where the expected lifespan of the panel then exceeds the typical ownership period under typical use", similar to how early LCDs were prone to burn-in from displaying black bars on the sides and have since been perfected to be all but immune to burn in except in extreme uses.

This is of course unless it fails to live up to the hype, and will likely depend on the individual TV model's initial capabilities, namely brightness, as to how long it will last.

 

[The Historical Fidelity]

I read somewhere that there are red and green PHOLEDS, but not blue PHOLEDS until very recently (not in any panels yet).
Since Samsung QD-OLED panels only use blue OLEDs, I believe this is why they currently have worse burn-in issues than LG OLEDs.

(someone correct me if I'm wrong)

You are correct but I remember reading an article of Samsung adopting a new blue oled for their next gen oleds. It promises a much more durable blue oled, so we will see if Samsung can match or exceed LG burn-in in the near future

 

[parkerthon]

Is this just in testing and not yet proven to be ready for integration? We have minimum five if not ten years I think.

 

[dk382]

Is this just in testing and not yet proven to be ready for integration? We have minimum five if not ten years I think.

It has only just been discovered and still exists in labs only. Five years minimum, indeed.

putting anything between display and diode makes me question the cost of "blue" as you will be blocking it so it WILL lose some of its color output.

The paper cites an "external quantum efficiency" (EQE) of 21.5%. EQE is the measure of actual light energy that leaves the device compared to the power put into it. This is more than double the typical EQE of standard fluorescent blue OLED diodes (typically under 10%), so no, I don't think you are losing any color output here.

Of course, we've seen lots of papers over the years that detail the discovery of new OLED materials with EQEs between 20% and 40%, but we're still stuck with terrible fluorescent blue OLEDs with EQEs of 7% or less sometimes in our actual shipping products. This is one of those fields where promising lab results come every other week, but actual tangible market-ready solutions are still exceptionally rare. High-EQE blue OLED continues to be the golden goose everyone is chasing. If you could use a third of the power for the same light output, that would mean incredible things for product longevity and HDR impressiveness. There is a phosphorescent blue OLED being brought to market in a couple years by Samsung, but even that may not be enough to completely eliminate burn-in concerns

 

[tennis2]

microLED when?