DuPont's been
dabbling in OLED advancement for years now, and while the world waits for the introduction of
market-ready big-screen OLED HDTVs, engineers at the miracle-working company are toiling away to make sure those very sets last quite some time. For anyone following the OLED TV scene, you'll know that
luminance longevity has been a
nagging issue, but if new developments pan out, stamina will be the least of our worries. In fact, the firm has crafted a green light-emitting material that can purportedly push onward for over a hundred years... continuously. Furthermore, the same scientists have engineered a new
blue light-emitting material with a luminance half-life of 38,000 hours along with a red light-emitting material with a life of 62,000 hours. Unfortunately for the laypeople out there, we can't imagine this stuff being even marginally affordable -- but hey, it's great news for the sybarites!
posted May 31st 2009 7:19AM
Cool, although IIRC the lifetime depends on what state the ink is in - i.e. if you spin-coat it onto a substrate it lasts much longer than if you print it into pixels.
You wonder how they test this 100 year longevity.
They have a time machine. Unfortunately testing OLED longevity was the only use they could find for it without screwing up the space-time continuum and causing the world to descend into a Star Trek series.
Actually 38000 hours is just 4.3 years.
And they don't need so much time to predict the lifespan. They can make predictions based on a short-term degradation.
like the comment above said, they are just extrapolating based how fast the material or its light output degrades.
Ok, if the life is a problem just have the damn screen serviceable! Ship it to a shop, have them strip the OLED and re-print the polymers. Seriously the consumer culture in the country buys total crap that is built to fail at warranty and then nit picks about something that can be solved by simply making a serviceable device. Volvo make a car in the 1960s that has gone 2 million miles on a single engine and people get excited because they get 250 thousand miles on a Toyota pickup . Wake up sheeple.
It's not the 60's anymore. Today technology actually advances year to year.
Why would I want to pay to repair my 3 year old tv when the same money could buy me a brand new set with a 3 year advance in features and technology.
Welcome to the future Mrs. Cleaver.
jon: Who said it'd be the same money?
ethicsg: +1
Super
Look at the cost of replacing a panel in a 3 year old plasma vs. the cost of a new plasma tv.
As for oled, actually producing the panel is the most expensive part of the process. The electronics are a fraction of the total price. Now we add in the cost of stripping the old material, plus labor to breakdown and rebuild.
Similar prices are a pretty safe bet.
Actual Research: +1
We're talking about consumer items in general. A lot them are easily replaceable.
reparable*
I hope they push it out in a affordable package for Asians, and not the US market.
I wish I was a sybarite...
What IS the current expected lifetime of OLED screens? Does that mean that OLED Music players and phones are going to be dimming soon?
PMP don't generally have their screens on for that long, think of it more in terms of a light bulb, the timer only goes down when its on.
You will end up trashing it far before then.
Depends on the specific manufacturer/production process/materials used in the display. Based on what I have read, I wouldn't worry about it. I would say that a conservative estimate would be 4-5 years of use before noticing any major change in brightness.
Yes, they all lose intensity after a while. The problem - as you can figure out from lifetimes quoted on the main post - is that the green lasts longer than the red, which lasts longer than the blue so as the panel ages the color balance is thrown off. Or, to put a more positive spin on the announcement, its great for green monochrome displays!
iirc the holy grail of OLEDs is 100,000 h for all three emitters, as the time to half-brightness. That would mean your TV could be on 8h a day and you'd be good for at least 20 years.
In practive for displays that aren't going to be used all the time, cell phones for example, you can get away with 10,000 h especially if you can get all the colors to fall off evenly.
isnt 38000 hours long enough? in 8 hours a day its 13 years... i dont expect to keep a TV longer than 3-4 anyways. if its affordable at 38000 i'd take it. just work on making it cheaper, not lasting longer.