OLED: the Next Thing in Monitors - Even brighter displays
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In LCD displays, 90 percent of the backlight is absorbed to give the color. Using Phosphorescent OLEDs (PHOLED), nearly 100 percent of the electricity will be converted into light; this is four times greater than previously thought. This is an even newer type of OLED; the current OLEDs and the ones produced in the near future will not have this technology.
PHOLEDs will be even more vibrant, and offer brighter colors and longer lifetimes than OLEDs. This technology hopefully will find its way into passive and active matrix displays. What makes this different than most OLEDs is what it uses to portray the colors. Both of the red and green materials have lifetimes over 25,000 hours, but the blue is trailing behind at almost half the others; other blue materials are still under development. Blue material is a problem now, and looks like it will be in the future.
Conclusion
The future for OLEDs looks bright! For conventional displays, OLED will offer a better, clearer picture and lower power consumption. OLED technology will spread far; it will make new displays into previously undeveloped markets. We will see the emergence of transparent and flexible displays.
Transparent displays may finally bring out a useful wearable PC. They should look a lot like the ones that appear in movies. They should be as transparent as glass or plastic. Flexible displays will also come out in the future. These will be mostly used in mobile devices because they offer a smaller size and are more durable. There will be a few other applications for this flexible display that will use the flexibility of the display.
OLEDs are not without their problems. There aren’t a lot, but the lifetime is something to consider. The red and green organic materials are fine; they last roughly 20,000 hours and newer material will last 25,000 hours or more. The problem is the blue organic material. It doesn’t last nearly as long. Buying an OLED now will result in your buying another one real soon. Research is being done on the blue OLED, and progress is coming slowly but surely. The question is how long we will have to wait for the blue material to catch up. PHOLED research leads to the same result; the blue organic material still has a smaller lifespan than the rest. While OLEDs aren’t perfect yet, they still offer a bright future for displays.
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