You can find some pictures of the used chips here:
fastvoice.net/2014/07/28/im-test-die-erste-integrierte-led-leuchte-von-ledon/
fastvoice.net/2013/12/21/im-test-neue-led-spots-von-ledon-von-sehr-klein-bis-sehr-hell/
fastvoice.net/2012/09/19/jetzt-gewinnen-ledon-sunset-dimming-led-lampe-dimmer/
fastvoice.net/2012/08/23/ledon-sunset-dimming-sensibles-erroten/
fastvoice.net/2012/05/15/led-splitter-dimmer-ledon-rotlicht/
futurezone.at/produkte/energiesparlampen-sind-tickende-zeitbomben/24.580.939