OLED Displays Technology Primer and Forecasting 197
HawKe writes "OLEDs are back in the news and Audioholics reports on what makes the technology so special as well as who leads the pack in currently shipping products, vaporware, and displays that are on the horizon. The crux of the matter is whether or not OLEDs, the "eco-friendly" choice, can outpace current LCD and plasma display advances. In order to enter and dominate the home theater and computer display markets, they must not only establish themselves, but also beat the leaders in price and performance."
Great News... (Score:4, Insightful)
Re:Great News... (Score:5, Informative)
Re:Great News... (Score:3, Insightful)
Re:Great News... (Score:3, Interesting)
Though tese beasts are so power-hungry I can't imagine a PDA with a plasma screen.
I'm afraid they won't be able to increase the life time for OLEDs much. But the technology sounds promising that the prices may drop so significantly, that you just buy a PDA and get a replacement display as often as replacement batteries, only much cheaper
Re:Great News... (Score:2)
Re:Great News... (Score:4, Interesting)
Re:Great News... (Score:4, Interesting)
So, I expect they will get to 5000h, with a lot of luck luck to 10-20.000, that's still not very much. Plus the research doesn't really pay - build a TV that lasts 10 years in perfect condition and the customer won't buy another TV from you in next 10 years.
On the other hand, reducing the cost to less than 1% the original (note: cost, not price) is quite common.
Re:Great News... (Score:2)
Re:Great News... (Score:2)
Re:Great News... (Score:2)
just a question of price (Score:2, Interesting)
Re:just a question of price (Score:2, Interesting)
Tell that to the guy who always leaves his monitor on overnight at work (with no power management to power down the CRT).
Re:Great News... (Score:2, Interesting)
Re:Great News... (Score:2)
It's based on electrowetting. Basically, one of the three colours of an RGB pixel is made up of a film of oil. The oil normally spreads/clings all over the tiny surface to form a solid color. The surface under the oil is made of a special material that attracts water ONLY if it's under electrical current.
Now, if you want to remove the oil to reveal the color of the surface under it, you electrify the surface below the oil, the water above the
Re:Great News... (Score:4, Interesting)
The article says they've got a 15" prototype.
Maybe we'll finally get a notebook display that you can read in sunlight?
Re:Great News... (Score:3, Interesting)
Oh, wait...
Nevermind.
I actually have had to do a lot of LCD'ing in sunlight with laptops. It's not so bad at times. Apples do pretty well. And there was a fair number of old dells which worked fine as long as you were in about 15% shadded area.
There's no point in doing SSTV if you have to lug a CRT with you.
And I'll not even get started with doing DAQ at surface sites without a GOES transmitter. It's laptops and bug repelant for us for at least anoth
Re:Great News... (Score:5, Informative)
Re:Great News... (Score:2)
Re:Great News... (Score:2, Funny)
Re:Great News... (Score:5, Funny)
Yeah. If you open up your CD-Rom a laser ray will shot at your ceiling too. There's voltage in your keyboard, and a CRT monitor contains an electron cannon. And your inkjet printer launches hot ink steam at the paper at high velocity! What a dangerous world we live in!
ps. Did you know there is MAGNETIC FIELD around your speakers?
Re:Great News... (Score:2)
Re:Great News... (Score:2, Insightful)
The TV could kill!! (Score:3, Interesting)
Re:The TV could kill!! (Score:4, Informative)
Re:The TV could kill!! (Score:3, Funny)
their front today. Trying to kick in a TV is not a good idea. You may break your foot.
Re:Great News... (Score:5, Funny)
Yes, but it's easy to fix. You just have to reverse the polarity on the phase manifolds in your keyboard. They're next to the inertial coupling stablizer.
Re:Great News... (Score:2)
Damn, so that's how! And there I was, ejecting the core every time plasma leak happened...
Re:Great News... (Score:2, Interesting)
1000 hours? (Score:5, Informative)
In the article, though, they list among OLED's advantages "1000 hour life."
That's 41 and two-thirds days. This is clearly wrong; my stereo's been going strong for nearly two years.
Just FYI.
Re:1000 hours? (Score:4, Informative)
Re:1000 hours? (Score:2)
At least teachers in countries with > a 3rd-world education system who give a shit do it
Re:1000 hours? (Score:2)
Re:1000 hours? (Score:2)
Re:1000 hours? (Score:2)
They don't have many teaching hours, but the profession has the highest rate of diagnosed depressions.
Before I had children, I wondered why. Now I don't even dare to imagine what it is to be in front of 20 of them all day long...
And in most countries, they aren't even paid well.
Re:1000 hours? (Score:2)
You mean 'face time': 6 hours a day, 5 days a week, 40 weeks a year. Doesn't count 'prep time' which is uncounted and unpaid (except the 1 hour a week 'Release from Face to Face' - RFF) and possibly letting the church(es) in to take the kids for an hour a week of scripture classes (something I don't do as I believe religion is something for the individual family, not the public school). Australian public system I'm describing here. YMMV.
It never ceases to amaze me h
Re:1000 hours? (Score:2)
Re:1000 hours? (Score:5, Informative)
Snipped from that page:
Re:1000 hours? (Score:5, Informative)
Re:1000 hours? (Score:3, Interesting)
Even at a thousand or two hours though, if these displays are cheap and 'green' enough I dont mind buying a new one every now and again. I'm pretty sure Ive never kept a car for more than about 1000 hours of actual use (figure 40,000 miles at 40 miles per hour average as a loooooong time to keep a car).
Admitedly I dont scrap the car, but I sure as hell lose a lot of money on it!
Re:1000 hours? (Score:2)
40,000 miles worth of driving is a long time? Maybe at one stretch, but really, I know very few people who would consider 40,000 miles excessive.
Re:1000 hours? (Score:2)
I know some people do the 3-year lease thing and get a new car every 40,000 miles -- it's pretty wasteful compared to buying a car to drive it for 100,000+ miles. As long as you do regular maintenance and fix small problems before they get big, keeping a car for its full lifetime is very advantageous from an economic
Re:1000 hours? (Score:2)
Is Organic LED == degradable? (Score:4, Insightful)
or what is the lifetime of such a LED device?
Imagine your display goes fuzzy and blurred in the middle of a good film.
Re:Is Organic LED == degradable? (Score:2)
Or it just starts out blurry on that brand new 60" plasma.
Re:Is Organic LED == degradable? (Score:5, Informative)
LCD life is 45,000 hours
Plasma life is 14,000 hours
CRT life is 45,000 hours
I'll stick with LCD or CRT until plasma or OLED become cheap enough that replacing them is like replacing the brake pads on your car.
CCFT backlight (Score:5, Informative)
That's really just due to the fact that eventually the CCFT backlight will croak. With most LCD displays, it's just a $15-$25 part and your LCD is back in business. If you factor in CCFT replacement, an LCD monitor should last as long as the controller circuitry keeps functioning - most likely, a LONG ASS TIME.
Re:CCFT backlight (Score:2)
Even so, sadly, I think people would more likely just upgrade the display. 45,000 hours is about five years worth of use, assuming 40 hours a week use.
Re:CCFT backlight (Score:2)
Between the two, I can tell you which way I'll go, at least for now.
two things... (Score:5, Informative)
b) lifecycle numbers are under bias. FWIW many electrolytic capacitors are also rated for 1000 hr lifecycles, and you don't see many tv sets just blowing up after 6 months. "Lifetime" typically means "this much time until specifications change X%." For capacitors it's typically a 20% change in value, and this change is not linear - the greatest change comes in the first 100 hrs or so and degrades slower after that.
Given "normal" program material and use in a true color display "1000 hrs" absolutely does NOT mean "it dies in 40 days." It means after 1000 hrs under bias any given pixel element will lose 50% of its brightness. In a 1/64 duty cycle system this means you can multiply those 40 days by 64 - about 2500 days, or 7 years.
As someone else has pointed out, the real challenge is getting a reliable means of producing panels with consistent degradation of all pixels over time. If you have 10% of the red oleds fading after 800 hrs and 20% of the green elements fading after 1200 hrs you're going to have a display with splotches of color that, over years, becomes worse and worse.
Still, this is no worse than LCDs that typically require repair after just a couple of years because their backlight (or the inverter driving it) has failed. At best you can hope for a warning as the color gradually turns pink - or maybe you just turn it on one day and find the screen is "dead." Or your projection set - those bulbs are often a couple hundred bucks, and damn few are rated at more than 2000 hrs lifetime. Given all that, this 1000hrs don't seem bad at all. [sid.org]
Re:two things... (Score:2)
Seems simple enough given modern digital processing capabilities.
All you would need is a single receptor, and a willingness to run a calibration test periodically.
Multiply the brightness of each pixel by 1/(the amount of light that reaches the receptor).
-- not a
Re:Is Organic LED == degradable? (Score:2)
Thats how they know CD-Rs only last about 100 years even if seldom used and NAND-Flash looses its memory after 10 years (they knew that one long before Flash had been around for 10 years).
Re:Is Organic LED == degradable? (Score:2)
Films are at the cinima are about 1 dpi, blured to hell, poor contract and flicker like hell, that bit of bluring on you home screen will just help the effect along.
Re:Is Organic LED == degradable? (Score:2)
or what is the lifetime of such a LED device?
Imagine your display goes fuzzy and blurred in the middle of a good film.
This is not an MTBF question. The problem is that the colours fade with different speed, i.e. the display gets a colour-shift and looses brightness.
The question of life-expectancy is therefore subjective. MTBF as in failure should be acceptable right now.
Re:Is Organic LED == degradable? (Score:2)
One reason why LCDs will stay around. They will just start to become more expensive at some time. My personal opinion is that OLED is the cheap-throw away color display that was missing. Small B/W
Size... (Score:5, Funny)
Women: "Damn right."
Re:Size... (Score:2)
Can it 'display' black? (Score:5, Insightful)
Re:Can it 'display' black? (Score:5, Informative)
Re:Can it 'display' black? (Score:2)
Re:You call that true black. (Score:2)
While it doesn't emit light, it reflects light.
Put some black pigment on it and it will display black.
Re:Can it 'display' black? (Score:2)
I guess we'll find out soon enough, but it's some
Re:Can it 'display' black? (Score:2)
It was horribly bright. I had to turn down the brightness to below 40% in order for black to actually look black, and the black looks pretty black to me.
I can't imagine a CRT that can't have the brightness turned down enough to have black actually be black. An engineer friend I work with basically said the first/fastest/simplest adjustment on a
Black levels, refresh rate: what?! (Score:3, Informative)
* Ensuring competitive refresh rates, contrast ratios, black levels and overall performance
Why on earth would black levels be an issue for an LED display? I thought that was a problem unique to LCDs, due to their backlighting. Furthermore, I was under the impression that refresh rates for today's LED displays already surpass LCDs; that high refresh rates are a feature of the technology. Is the reporter full of it, or am I misunderstanding something?
Re:Black levels, refresh rate: what?! (Score:3, Informative)
But ev
Re:Black levels, refresh rate: what?! (Score:4, Informative)
Of coursre, all other things being equal, I'll be perfectly happy to forego the heavy power usage of LCDs and the ludicrous power usage of plasma displays.
Re:Black levels, refresh rate: what?! (Score:3, Informative)
Now comes the peculiar point. It would seem to me
Replace at 6 months?! (Score:2, Interesting)
Given a 40 hour work-week, 1 month is 160 hours, and 6 months is 960 hours. This sounds ridiculous! I'm in the third year of my CRT monitor, and I don't have the money to replace it anytime soon, esp. not if I have to buy a new OLED every six months!
Re:Replace at 6 months?! (Score:3, Insightful)
If OLED displays really will be so much cheaper, maybe it's time to start thinking of displays as a disposable resource.
Re:Replace at 6 months?! (Score:2)
Same thing with plasma tvs (Score:4, Informative)
Re:Same thing with plasma tvs - Wrong (Score:2, Informative)
Sorry if I came out as mad at
No problem... (Score:2, Interesting)
This sentence seems to assume some sort of independant startup...some sort of 'competition' - which isn't the case at all.
Seeing as the leading LCD manufacturers (displays, not panels) have been aware of this evolution, and they have the reins in their hands, OLED can come in quickly - no worries.
Incredible potential (Score:5, Interesting)
Re:Incredible potential (Score:2)
"HUDs in cars could become standard offering by sticking an OLED screen on the windscreen..."
I would think retinal projection on a single eye would work much better for this - because having to focus on the windscreen to see the display is going to be distracting to the driver, while a retinal projection would require no refocusing and would allow you to see the information all the time, while driving, without distracting refocusing.
Re:Incredible potential (Score:2)
To not have to redecorate it every 10,000 hours?
Re:Incredible potential (Score:2)
Well, the shrooming should help that :-)
Not much news... (Score:5, Interesting)
3D (Score:2)
Re:3D (Score:3, Funny)
Mirage 3d [optigone.com]
Thanks,
Ex-MislTech
As with any technology.. (Score:2, Insightful)
OLED not yet for home theater monitors. (Score:2)
Already, DLP has become quite popular for large screen home theater monitors, and LCOS may within the next 18 months offer the benefits of DLP but at substantially lower prices! Also, another nice thing about DLP and LCOS widescreen projection TV's is the fact they have s
Re:OLED not yet for home theater monitors. (Score:3, Informative)
Have you been living in the wonderful world of 20 years ago? CRT monitor burn-in is almost nonexistant for any modern, decent-quality monitor. You would have to try very hard to get a monitor to burn in these days.
Rear-projection CRT I don't have any experience with. I hear that yes, burn-in can be a problem with those, probably due to the brightness they need to achieve to project that image onto the screen. But they only comprise a minority of CRTs, and to lump all CRT
Unfortunately, it's true. (Score:2)
I've been reading a number of online forums that discuss home theater systems and there has been many concerns about screen burn-in problems with CRT-based rear projection TV's, mostly because of the need to have high levels of brightness to achieve a viewable display in the home environment. This is why DLP an
Laws of color mixing suspended (Score:5, Informative)
missing word? (Score:2)
was supposed ot be:
Apparently the OLEDs themselves can be made transparent.
Grating Light Valve! (Score:5, Interesting)
For a television, however, there's another really cool technology I'm waiting for to become commercially available (to the consumer: Grating Light Valve based projection TVs.
Red, Green, and Blue diode lasers (RGB) + a Microelectromechanical (MEM) diffraction ribbon = very bright, detailed, lifelike image. I've heard anecdotally about people who became disoriented because the image looked 'too lifelike.'
Informaion [siliconlight.com] about GLV display technology.
OLED - small molecule or polymer (Score:5, Informative)
There are two OLED `generations':
1) Small molecule - these use small organic molecules (think anthracene). They require pretty much conventional vacuum-systems for preparation and hence are expensive. However, they are emissive (unlike LCDs). These are the OLEDs we start to see in cameras etc. Lifetimes are pretty good.
2) Polymer - this is the 2nd gen - here the manufacturing is all roll-to-roll or inkjet printing. These are going to be the el-cheapo reasonably-nice displays of the future. However, the lifetimes here are a concern - we're talking 15,000 hrs for the best blue polymers which isn't good enough yet.
Re:OLED - small molecule or polymer (Score:2)
But if they are truely el-cheapo, we should be able to replace them like a lightbulb every few months for a dollar or two...
Re:OLED - small molecule or polymer (Score:2)
Polymer TFT planes and polymer substrates are coming on but, even when we get the active layer polymer right, we'll still need the other two to get real disposible displays.
Just a couple thoughts about this... (Score:2)
"# Operating lifetime exceed 1000 hours"
So does that mean that I will have to replace my new cheap OLED TV after 1000 hours? or that my current LCD will only last 1000 hours, or what? Thats a 24x7 lifespan of a shade less than 42 days.
Other than that, seems like a good idea, and lots of good cheap applications as well. And considering how the devices are made, could this be a step below cloth displays, or moving posters, etc??
I think i speak for many people when i say... (Score:2)
OLEDs are just the latest vaporware (and no, i don't concider 1 fscking digital camera screen anything else but vaporware), and i've been reading the same damn articles about it for at least 5 years now... this is not gawddamned news...
i swear - i hold no hope of seeing a 17" OLED monitor before 2010 when looking at the progression of the technology.
Re:Expensive. (Score:5, Informative)
Re:Expensive. (Score:4, Interesting)
Give that part about three more years. Physics guys upstairs are actually working on a similar problem now with some deposition machines.
As you mention, the main selling point will be for integration with other circuits. This is really the next step to making wearable advertising.
Re:Expensive. (Score:4, Informative)
Re:Expensive. (Score:3, Insightful)
I haven't seen any word on whether the primary colors can be truly SMPTE compatible. If it isn't, then it wo
Re:Expensive. (Score:2, Insightful)
Re:Operating Lifetime (Score:5, Interesting)
Imagine if you needed a new monitor. So you go out and buy a new OLED display. After use it eventually starts to fail (after your 42 day marathon CS session, or your 2 years of only checking your e-mail, or whatever). Instead of going out and buying a whole new display ($$$), you don't.
You open a little panel on the top (or side) of the screen and pull out the OLED pannel not unlike pulling a film plate out of a camera. You go down to the local computer store and buy a new OLED pannel (not display) for a little bit of money ($), stick it in your display, and you're all set.
Now because they cost less to manufacture, they cost less at the start, and the "refills" are cheap (unlike LCD panels which cost a fortune). Now only that, but because electronics can be integrated onto the panel, the new one you buy might all of a sudden offer you a higher refresh rate, more colors, higher resolution, lower power consumption, or some other feature that has been cooked up or improved since you bought your panel.
I would buy that. It seems perfectly reasonable to me. By leaving things in the case of the display (power supply, connectors, speakers, USB hubs, anything else you want to put in there; maybe driver circuitry) when you buy a new panel to put in your display things are cheap. When your LCD or CRT dies, you not only have to buy a new tube, you have to re-buy all the electronics around it because you can't (easily) get a new tube to fix your monitor. Same with LCDs. So in the long run it would be cheaper. Instead of paying $300 every 3 or 4 years (let's just assume that), you pay $150, then $25 every year. Eight years out you've spent $325 ($25 * 7 + $150), instead of the $600 you'd spend normally. The difference is that each year you get little incremental upgrades. And if the displays are even cheaper than that (maybe $100 to start, or the "refills" are $15) things look even better, don't they.
And if the display manufactures got together and set a standard for how the panels interface to the display and such so they all took the same refills, the competition would be FANTASTIC for the consumer in price and quantity. And before you say "they won't do that, just like printer ink doesn't do that", don't forget that a company like Dell (or Dell + others) could force it on them. If that happened, it would be such a great day for the consumer.
It could work. Maybe things will go my way (we'll see), or maybe the things will be improved in lifespan to where it's like a normal LCD. Either way it's competition for LCDs which means that consumers can benefit even if they never replace LCDs totally.
Re:Operating Lifetime (Score:5, Insightful)
You know, like printer ink and razor blade cartridges?
Lets not give the megacorps yet another "disposable" item they can soak us for... besides, wouldn't it suck if your monitor suddenly "died" at 7pm on a Saturday night or something. Good luck finding a "refill" for it.
Re:Operating Lifetime (Score:3, Insightful)
You'll have plenty of warning before having to buy a "refill".
I like the idea, but you may be right about the price thing.
Re:1000 Hours? (Score:5, Insightful)