Posted on 12/21/2005 4:33:56 PM PST by Baby Driver
Mitsubishi Chemical Corporation and Mitsubishi Chemical Group Science and Technology Research Center, Inc. today announced that both companies have developed an Organic Light-Emitting Diode (OLED) device with the highest efficiency in the world in our new blue phosphorescence OLED material.
The new OLED material, which can be produced by a lower-cost, wet-coating process, is expected to open the way to the development of a new class of large flat-panel displays.
Unlike LCD screens, OLED devices emit light when an electric current is applied and do not require a backlight to function. They consume less power, have a wider viewing angle and display a brighter image with a refresh rate that is a thousand times faster than LCDs.
Current applications of OLED technology are limited to smaller display screens of mobile phones, car audio, portable music players and similar products because of the difficulty applying current OLED technologies to large screens. This problem could be solved with evolution of our OLED technology.
MCRC has been developing materials, mainly phosphorescence-emitting layer material, suitable for manufacturing a thin, bright large-screen display. Phosphorescent material has four times greater luminous efficiency in principle than that of fluorescent material, which is widely employed now. This higher efficiency of phosphorescence leads to low power consumption, which is critical for applications using larger screens such as flat-panel television screens. In addition, the wet-coating method enables low-cost processing and makes practical the fabrication of large-area screens, which has been difficult and expensive using standard vacuum deposition processes.
The newly developed OLED device employs our own blue phosphorescence host material (wet-coating type), hole blocking material, and hole injection material to optimize the design of a device to achieve the current efficiency of 30 cd/A at the intensity of 100 cd/m2 (external quantum efficiency: 13%), more than twice that of conventional blue wet-coating type OLEDs.
"It is far superior to existing lines in terms of efficiency of phosphorescence emission. We expect to have early success in practical applications," said Dr. Junji Kido, a professor at Yamagata University and the internationally recognized lead scientist on the OLED project.
Dr. Yoshimitsu Kobayashi, President and CEO of MCRC, stated: "This achievement is a milestone in the development of OLED technologies, because this enables OLED to be applied to flat-panel displays."
Developing improved materials for display screens is one of the five research and development focuses for the MCC Group's mid-term management plan, "KAKUSHIN Plan: Phase 2." The MCC Group is pursuing further improvements to its blue OLED material to ensure longer lifetime. Commercialization is targeted by the end of FY2007. In the future, the Group will also explore potential applications for innovative lighting products using this technology.
Excellent. I look forward to replacing my existing TV with a nice 72" flat panel.
I only eat 100% certified organic LEDs. Yumm!! Whole foods markets has them - ask for them by name.
TV's keep getting better and better and the content keeps getting worse.
Yes soon Whorlywood will be to inject their poison directly
into the brain's pleasure centers...
Now..that's entertainment...
A nice 72"..roll up, 7 lb... flat panel.
:o)
Making progress!
Yes, I interpreted this tech-speak the same way... 60" HDTV's next Christmas for $299....
One other OLED project i've read about, has a new
version of the classic house light buld, that is
just as bright as a 100W bulb, but only uses about
3 to 7W of electricity. Don't know about you, but
if i were able to replace all the monitors & TVs
, and light bulbs with OLED screens & LED "Bulbs"
I have in the family house...we would be talking
about a serious reduction in the electricty bill.
especially with one teen who hosts a weekly
"LAN party" for his friends..
Well Hey, if nothing else, it's putting some
serious pressure on LCD screen makers to improve
*their* products, and reduce prices. It wasn't
*that* long ago, when a 19" LCD screen could
not be bought for under 2 grand. Now..i just
saw an ad in the recent CDW mag, that had a
couple different ones, at under $500..Now,
2 grand, will buy you a 60" LCD.
How is the service life on these new emitters?
It's not mentioned and is an issue with current OLED.
I'll be in the market for a FPTV next year. Plasma
is already off the short list due to life-cycle issues
(burn-in of the active area, and not of the windowboxed
or letterboxed areas, leading to eventual visible
framing artifacts). Rear-projections of all kinds is
out due to the hot-spot effect.
LCD is the leading contender, but a long-lived OLED
might get some notice.
life cycle is up to 60,000 hours. and the better sets have anti burn-in methods in them. so long as you purposely don't do anything "crazy" with a plasma (like watching 4:3 with black sidebars all the time), its solid technology.
Well I really can't say..i haven't kept that
close attention on the MTBF rates, other than
to have read that the longivity has grown. I *did*
read an article n the last week or so, that a
company had dramatically increased the lifetime
well into "TV set lifetime expectancy" range, but
i believe it was a monochrome unit that was testing
so good.
OLEDs are still on the horizon, but in the last couple
of years, that "horizon" seems to have dropped from
about 10 years, down to seven, and then five, and
with this "forward looking statement" :o) may be
down to 2 or 3 years.
Personally, if i were in the market for a new
screen..I figure (MY opinion) that it's gonna
be a much better market in a few years, than
it is now..So, 2 options:
Option !. (the money to burn) option: *I'd*, buy an LCD projector with TV compatability options.
Option 2.
(The one i'd most likey end up going with) Buy
a large screen CRT, and save my money for the eye candy
screen that will be on the market 2 to 3 years from now.
I am of an opinion that in this particyular situation,
procrastination, will only increase your options, choices
and bang for your buck. If you are a "bleeding edge kinda guy", there will still be lots of room and OEMs ready to grab your cash then, too. They aren't going to "perfect"
"TV" in the next 2 or 3 years. :o)
Here's a link to the large Monochrome OLED screen story.
http://www.eetasia.com/ART_8800400002_480700_3e35cd4c_no.HTM
100,000 hours..that's almost 11 and a half years, of
allways "on" time.
> (The one i'd most likey end up going with)
> Buy a large screen CRT, ...
I'm in the market because my 16-yr old 32-in CRT finally
failed for the last time. At 180#, it nearly killed
me a couple of times, and CRT is off the short list
just based on mass. We've gone all-LCD on the PCs too.
I won't even get into interlace twitter and cal drift
on CRT TV.
Meanwhile, when we want to watch a DVD, I hook up a
23-in LCD 1920x1200 16ms computer monitor that just
happens to have YPrPb, S-video and composite inputs.
What I've seen so far says that a 37- to -43 in, LCD
would be entirely acceptable. I'm just waiting to see
what the new year brings in LCD, such as more choices
in 1920s (most are 1388 or less now).
But I'd be open to OLED also.
Guess USA engineers are watching cartoons.
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