Novaled developed a V-OFET backplane to efficiently drive AMOLED displays

Next week at SID, Novaled will report on a new Vertical organic field-effect transistors (V-OFETs) that can be used to drive high-brightness AMOLED displays. Novaled says that the new backplane can be deposited on plastic backplanes, and it allows a 4X brightness enhancement compared to reference AMOLEDs.

Vertical-OETs has been first reported in 2011 by the University of Florida. That particular research used carbon-nanotube based backplanes, and it was spun-off to form a company called nVerPix which is commercializing the technology.

Posted: May 28,2015 by Ron Mertens


this is one of those good news/bad news developments   The good news is that if you can get 4 times the brightness out of OLED emitters, then the applications will expand.  The bad news is that for the same amount of brightness you might need 75% fewer emitters.

The key for UDC is to keep having the market net net this would be good. (IMO) but would be interested in your thought Ron.

Anything positive OLED technology advance is probably good for UDC. A larger market means more licensing and royalties revenue - which is not dependent on the amount of materials sold. In addition, unfortunately for the OLED market, they have a lock on very important IP, which probably means that if less material is needed, they can simply increase the price they want for the emitters...

In what respect is the current you can drive through an organic field effect transistor connected to UDC sales?


There is no AMOLED product in the market using OFETs.

Even if one could increase the max. driving current of an FET beeing used in an AMOLED, still you would need the same amount of OLED emitter material.


two Times no impact of ofets to UDC Sales 

UDC Sales Are positively affected when Samsung and LG produce more AMOLED Panels.


UDC sales would be negatively affected if Novaled or others would develop emitter materials which could replace UDC After 2018

I expect, that the battle UDC emitter market share will start in 2018, when their PHOLED base patents expire and other suppliers may start to offer emitter materials, which are not covered in UDC's proprietary emitter classes  

I don't think the amount of emitter correlates to brightness ;-)

Not true.  In evaporated systems, the aperture has no impact on the material used.  Aperture gain will allow the OLEDs to be run at lower intensity, thus increasing efficiency and lifetime.

The real problem with this claim is that if the display is using planarization + top emitting OLED already where's the gain from VTFT.