Tuesday, March 26th 2024
Scientists Develop a Solution to OLED Burn-in
OLED is the future of flat screen displays, as they provide superior color reproduction, dynamic range, response-times, and energy efficiency, over LCD. The latest crop of OLED panels powering notebooks and desktop monitors, however, have a problem that wasn't as prevalent with OLED-based televisions—burn-in. This is what happens when an OLED panel displays a static image for too long, causing regions of the panel to permanently discolor. Some PC monitor makers are jumping in to offer extended warranties against burn-in to their customers, as they realize that they just sold an expensive, exotic piece of technology that could potentially degrade within- or not long after their standard warranty periods. Scientists at the University of Cambridge think they have found a breakthrough solution against OLED burn-in.
Scientists discovered that the main culprit behind OLED burn-in is the blue diode. The blue LED has been an elusive technology that only came into existence several decades after green and red. It's only with the arrival of the blue LED that white could be made, turning LED into mankind's primary lighting source, and eventually the OLED panel. Blue is a relatively higher energy diode, and uses more exotic GaN substrate. The Cambridge scientists discovered that jacketing the blue diode alkylene straps would cut down burn-in, and make the manufacturing process more efficient. They have published their method in the Nature magazine. Unfortunately, it will be a while before display manufacturers take an interest in the new method, and re-tool their OLED production lines to incorporate it—we imagine at least a couple of years.
Source:
Tweaktown
Scientists discovered that the main culprit behind OLED burn-in is the blue diode. The blue LED has been an elusive technology that only came into existence several decades after green and red. It's only with the arrival of the blue LED that white could be made, turning LED into mankind's primary lighting source, and eventually the OLED panel. Blue is a relatively higher energy diode, and uses more exotic GaN substrate. The Cambridge scientists discovered that jacketing the blue diode alkylene straps would cut down burn-in, and make the manufacturing process more efficient. They have published their method in the Nature magazine. Unfortunately, it will be a while before display manufacturers take an interest in the new method, and re-tool their OLED production lines to incorporate it—we imagine at least a couple of years.
54 Comments on Scientists Develop a Solution to OLED Burn-in
This solution isn't a physical jacket on top of a LED diode.
It is a alteration of the chemicals used in the emitter coating of an blue OLED diode.
It described it as 'jacket' only because in molecular level, it looks like a 'shell' has been built around the original emitter molecule.
That's why LG 4K is called WOLED
@nguyen @R-T-B care to help me understand this? this won't help LG correct? LG went another way already.
The WOLEDs in TVs and monitors are no different, just much smaller than typical lighting LEDs
Samsung QD-OLED use blue emmiter only and then change the wavelength.
"Scientists discovered that the main culprit behind OLED burn-in is the blue diode." - I'm pretty sure this was known from the start, the blue LED light was always problematic, and OLED isn't any different.
So, does that mean that all the super duper 4K OLED gaming monitors that are comming out now for 1200 EUR will be obsolete pretty quickly?
I have a 12 year old plasma TV that has less "burn in" (it also happens on that technology) than my friends' 4 years old LG OLED - especially on the lower portion where the subtitles are displayed.
You've got the taskbar on Windows, the notification bar on Android, TV channel logos, game HUD, etc. There's no way to "use OLED right". It's just not fit for purpose.
Good in an academic sense but if it ends up helping in a practical one is an open question.
Take nuclear fusion, for example. Breakthrough after breakthrough for the last 30 years, but we're still the same "20 years away" from it being scalable to a commercial fusion power station.
RTings is as credible as it gets but explains it less clearly:I think @Wavetrex is right about the LG WOLED technology here. There's a blue OLED light source and a yellow phosphorescent layer ("YB emitters") that together emit white light. Not RGB emitters whose light gets mixed together to form white light.
The black and white television CRT is nearly a hundred years old and the term "burn-in" is probably older (as cathode ray tubes with luminescent coatings existed before television). It's high time we changed it to something less painful!