Novaled has developed and demonstrated a new type of structure for OLED lighting, called the white top emitting OLED, which involves building this type of lighting solutions on metal substrates. There are a series of advantages when working with a metal substrate and this invention might even be a revolutionary one, changing the way the OLED light solutions are built from now on.

The white top emitting OLED is based on the Novaled PIN OLED technology, which uses its proprietary doping and host materials as well as a special blue fluorescent emitting material which is produced by a company named SFC Korea. From a more detailed explanation provided by the manufacturers regarding the way in which their new system actually works I understand that one of the advantages of white top emitting OLEDs is the reduced color shifting over a wide viewing angle, hiding it from the human eye,

“With this achievement Novaled demonstrates once again the robustness and potential of its PIN technology”, says Gildas Sorin, Novaled CEO. “Configurations like top or bottom, inverted or non-inverted organic structures with various emitting materials and metal electrodes bring the proper high performance for each specific market request in the display and lighting domain.”

The power efficiency of the Novaled system is of 30lm/W if measured in an integrating sphere, they say, and the total lifetime of one such solution surpasses the 50,000 hours standard OLEDs usually comply with. This lifetime is calculated for OLEDs working at an initial brightness of 1000 cd/m2. According to the US Department of Energy, this new solution is close to the illuminant A category.

Some of the advantages of suing white top emitting OLED structures are the mechanical stability of the systems, good heat dissipation and low cost roll-to-roll manufacturing process. All sorts of bended designs are also possible.


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