There a few disadvantages related to OLED which may discourage organizations to implement such technology. First of all, the main technical challenge of OLEDs is the limited lifetime of the organic materials. Scientists are currently searching for more durable molecules so that OLEDs could last longer. If they do, OLEDs displays lifetime will increase significantly. A second main problem with OLEDs is that the devices are presently sensitive to environmental factors such as moisture and oxygen. Scientists need to improve the sealing process of OLEDs. At last, organizations need to pay a high price to obtain such an exclusive technology. As this technology is not yet very popular, the prices are high. Organizations can be reluctant to buy expensive OLEDs when the technology itself needs to be improve.
The following video introduces OLED Technology and also provides explanation for the limited lifetime disadvantage:
Links:
http://video.google.com/videoplay?docid=-5392488100974063103
http://oledguide.wordpress.com/category/oled/
http://www.informationdisplay.org/newsarticle.cfm?newsArt=news150
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