OLED Screen with World's Longest Lifetime and Best Efficiency by TMDisplay
by Michael Graham Richard, Gatineau, Canada on 08.21.08
OLED Screens are Coming
After spending about $140 million on production lines and unknown amounts of cash on R&D, TMDislplay, a joint venture between Toshiba (60%) and Matsushita (40%), has announced that it has developed a 2.2 inch OLED display that is the most power efficient and longest lasting in the world. The company plans to commercialize it in 2.5 inch format in 2009, for cell phones and small electronics. Not doubt the technology will eventually make its way to bigger screens.
TMDisplay OLED Technical Details
Lifetime is 60,000 hours, compared to 30,000 hours for a Sony OLED TV. That's good because initially one of the drawbacks of OLED screen were their shorter lifespans compared to LCD. That's changing. Power consumption on TMDisplay's screen is 0.1 watts, so that's very efficient, especially compared to a LCD of the same size (because it requires a backlight). Another thing to keep an eye on is using micro-lenses on OLED.
The joint development involved the TFT substrate design technology and element design technology of [Toshiba Matsushita Display] (TMD); development of materials by Idemitsu, including RGB light-emitting materials and peripheral materials which offer high-efficiency and low-power consumption; and joint evaluation of the optimum combination of materials by both parties. As a result, TMD and Idemitsu succeeded in achieving the world's highest level of performance for an organic EL display screen of 2.2-inch QVGA (240x320) format suitable for mobile equipment applications, with power consumption of 100 mW (based on typical movie screen images, defined by 30% brightness of a full-white screen) and luminosity half-life of 60K hours (based on a full-white screen at 200 cd/m2).
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That's cool. Of course they'll start small in cell phones, but the real payoff will be with computer screens and TVs. Cool tech.
If they can scale this up while holding watts/ square inch constant, then that means a 20 inch OLED widescreen TV would use
Not bad.
It's amazing how technology is make us more efficient. I hope they over come the issues with scaling this larger soon. IT would be nice to have an OLED flat panel TV. Not only do they use less electricity, but they also look better than LCDs.
And also these devices are smaller and use less materials to make...
and 100mW for a 2,2 inch screen would mean 10W for a 22'' - that's pretty decent.
44'' - 40W
66'' - 90 W - still seems pretty reasonable (who needs 66'' anyway?)