Patent ID: 7990054

Claim:
An organic electroluminescent device with a layer stack for emitting light through a top electrode which is at least partly transparent, the organic electroluminescent device comprising: a conductive foil comprising a substrate having an upper side and a lower side, and a first metal layer located on the upper side of the substrate, wherein a sheet resistance of the first metal layer is less than 0.05 Ω/square, wherein the first metal layer comprises a first metal area and a second metal area, the first metal area being electrically insulated from the second metal area, and wherein the first metal area acts as a bottom electrode; an organic layer stack deposited on top of the bottom electrode and configured to emit light, wherein the top electrode is located on top of the organic layer stack; and an at least partly transparent protection element covering at least the top electrode and the organic layer stack; wherein the conductive foil comprises a second metal layer and a conducting path, the second metal layer having a sheet resistance of less than 0.05 Ω/square and being located on the lower side of the substrate, and wherein the conducting path is in the substrate and connects the second metal layer to the second metal area of the first metal layer, and wherein the second metal area is directly connected to the top electrode.