Renewable energy and lightings - logically or artificially?

Renewable energy and high energy efficiency are big challenges today and for the future in research and development. While more than 55 % of the whole generated electric energy is used in electrical drives, lighting systems are not negligible and need up to 20 % (according to the Department of Energy in the USA even 22 %) of power going into the grid. This amount can be reduced by more than 25 % by using new lighting technologies like LED or OLED Light sources [1]. Due to European regulations, inefficient incandescent lamps will be banned from the European market by the End of 2016. By now, solid state lighting is already one of the strongest growing application markets in the electronics sector. The Paper discusses the electric parameters and aging effects of OLEDs and new drive concepts for LED/OLED. Further insights of problems arising from large lifetimes (for example: LED 105 hours [3] ) and their demands on driving circuits are discussed