Patent ID: 8063556

Claim:
A cascaded light emitting device, comprising: a split electrode structure formed of a first electrode material, the split electrode structure including a plurality of separate electrode portions, the plurality of electrode portions including a first electrode portion electrically coupled to a first voltage lead and a second electrode portion electrically coupled to a second voltage lead; an opposing electrode formed of a second electrode material; and at least one electroluminescent layer coupled between the split electrode structure and the opposing electrode, the at least one electroluminescent layer including a mixed conductor that luminesces with a peak wavelength, a total thickness of the at least one electroluminescent layer being such that a resistance across the at least one electroluminescent layer between an electrode portion of the split electrode structure and the opposing electrode is less than half of resistance between adjacent electrode portions of the split electrode structure, wherein the cascaded light emitting device forms a current path from the first electrode portion of the split electrode structure to the opposing electrode and from the opposing electrode to the second electrode portion of the split electrode structure.