DailyTech - Toshiba Introduces 20.8" LTPS OLED Display

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Gadgets Toshiba Introduces 20.8" LTPS OLED Display
Nirav Sanghani (Blog) - April 11, 2007 1:30 AM

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15 comment(s) - last by Master Kenobi.. on Apr 12 at 10:43 AM

21-inch OLED display

Toshiba Matsushita develops largest LTPS OLED display to date

Toshiba Matsushita Display Technology Co., Ltd. has developed the first 20.8-inch low-temperature poly-silicon (LTPS) organic light-emitting diode display (OLED) panel. The new panel holds the largest screen size for LTPS OLED displays, following the 17-inch model developed in April 2002.

The LTPS technology, along with a uniform organic electroluminescent coating process, allowed for the larger screen size to be developed. The panel produces images from light emitted by fine organic electroluminescent film formed on the glass substrate, where is can offer high contrast and fast response time, along with a wider viewing angle and a thinner profile by eliminating the backlight system.

The display also holds three RGB color-emitting layers that use polymer organic electroluminescent materials, along with an ink-jet type coating process for each color. Toshiba Matushita developed the management-of-light at the nanometer level in individual pixels to improve efficiency of distribution of light produced from the layers.

Several months ago, Sony Electronics showcased its OLED research, demonstrating a prototype of its 27-inch flat panel OLED model at the Consumer Electronics Show. Other companies, such as RiData, LG. Phillips, and Mitsubishi Chemical, have produced smaller models of the OLED display primarily for cell phones and other small screen devices. However, Ritek has since closed down its RiData OLED operation.

OLED technology has also made its way into keyboards, with the Optimus Maximus, and automobiles, such as the gauge display on the C6 Corvette and car audio face-plates.

The drawback to the OLED display is the still relatively short life-span. The average life-span for the display is around 10,000 hours of viewing, while most other television technologies last 50,000+ hours.

The newly developed panel will be exhibited at Toshiba Matsushita's booth at the 3rd International FPD Expo (Display 2007) at Tokyo Big Sight from April 11 through April 13, 2007.

Toshiba Matsushita has not released a price for the new panel yet.

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Looks Good

By mrteddyears on 4/11/2007 4:03:39 AM , Rating: 2

Does anyone know what the power consumption is like compared to LCD. However they do look really smart and I am sure the life span will up as the technology matures.

RE: Looks Good

By ZoZo on 4/11/2007 4:45:21 AM , Rating: 2

The technology has been maturing for 22 years already...

Power consumption is much lower, because LCDs use backlights whereas OLED don't. For this reason, the picture quality with OLEDs is also much better.

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RE: Looks Good

By cheetah2k on 4/11/2007 5:45:44 AM , Rating: 2

But... what are the timings like??

Are we talking 16 ms ( black to white) / 6 ms ( grey to grey ) or better (like my 24" DELL)

I dont care about power consumption (quality is a given) but i need to know if i'm gonna get headaches dealing with frame blurring in BF2142?

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RE: Looks Good

By margav on 4/11/2007 8:50:05 AM , Rating: 2

Last OLED display i saw, it was Toshiba I think, well it was 17 inches, resolution of 1600x1200, and ms below 0.02

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RE: Looks Good

By margav on 4/11/2007 8:52:35 AM , Rating: 3

Ah, found the link. It was not Toshiba, but Samsung

http://aving.net/usa/Exhibition/default.asp?mode=r...

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Nice bezel

By jmunjr on 4/11/2007 3:26:06 AM , Rating: 1

Those things look like some foo-foo contemporary art picture frames..

RE: Nice bezel

By kyleb2112 on 4/11/2007 4:12:36 AM , Rating: 3

Yeah, let's make it artsy AND flip the bird to every dual-monitor user. But at least it takes up more desk space.

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RE: Nice bezel

By GoatMonkey on 4/11/2007 8:03:45 AM , Rating: 2

The Sony OLEDs shown earlier (with a link in the article) have a much smaller bezel. So, it doesn't seem to be a technical problem that can't be solved, but maybe these guys don't know how to do it yet.

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RE: Nice bezel

By Yeah Yeah on 4/12/07, Rating: 0

not ready for prime time?

By dome1234 on 4/11/2007 6:34:23 AM , Rating: 2

eyeballing the screens above, 1st impression is huge frame with the much smaller viewable screen. Imaging a 40" viewable area model, the thing would be huge! and maybe much heavier too compared to current lcd/plasma.

RE: not ready for prime time?

By Guuts on 4/11/2007 8:35:29 PM , Rating: 2

That's just Toshiba's design choice. Follow the link in the article to the Sony models, as those have "normal" thin bezels. As someone commented above, it apparently isn't an engineering issue, just a strange artsy design of these Toshiba displays.

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20% lifetime compared to other technologies...

By jskirwin on 4/11/2007 10:12:54 AM , Rating: 2

I don't suppose they will sell for 20% of the price then, will they?

RE: 20% lifetime compared to other technologies...

By Mudvillager on 4/11/2007 11:06:04 AM , Rating: 2

The numbers which are stated in the article are outdated.

Blue has been the color holding back OLED's life span. A new technology called PHOLED has increased the Blue's life span to 20,000 hours from about 5,000.

Read more about it here:
http://en.wikipedia.org/wiki/Oled

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Lifespan...

By daftrok on 4/11/2007 10:32:21 PM , Rating: 2

Lets assume the worst case scenario and say these OLEDs last 10,000 hours. Assuming people are watching television 6 hours a day every day, the lifespan of the television is around 4.5 years. Now assuming the 20,000 hour lifespan, thats around 9 years. A minority of people watch television for 6 hours + every single day (I hope) so that means this television can last around 5-10 years, depending if it is 10,000 hours or 20,000 hours (among other factors).