OSRAM announced it has developed a new white OLED panel that achieve record efficiency - 87 lm/W. The tested panel had a brightness of 1,000 cd/m2 and a color temperature of about 4,000K. At 5,000 cd/m2 brightness the panel offers almost 75 lm/W.
OSRAM used a pure thin-film approach. The current was distributed evenly over the active surface using a special injection electrode on the light-generating surface and offers homogeneous light density from every angle.