This page is what I have to say about organic LEDs (OLEDs) and polymer LEDs (PLEDs).
These things are supposed to be a new and improved way to get flat-screen TV sets and computer monitors, as opposed to backlit LCD (liquid crystal display) devices and old fashioned CRTs (picture tubes).
It is somewhat commonly believed that OLEDs and PLEDs are not just yet about to make inroads in the area of indicator lamps, flashlights, nor most other applications of "conventional" semiconductor LEDs.
If you want to try your own researching/web-searching, an additional term or term combination to consider is "DC electroluminescence".
Some news:
A news page at Compound Semiconductor.
Universal Displays page on organic LED technologies.
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