Abstract: A method of manufacturing an organic electroluminescent device is provided. First, a substrate and an anode on the substrate are provided, and then, an organic electroluminescent material layer is formed on the anode. Next, a multi-layer transparent cathode is formed on the organic electroluminescent layer. The step of forming the multi-layer transparent cathode comprises performing a co-evaporation process to form a doped buffer layer comprising electron transport materials and dopant so as to distribute the dopant uniformly in the electron transport materials.

Abstract: Systems for displaying images are provided. A representative system incorporates a light-emitting device is disclosed. The light emitting device comprises a plurality of rows of pixels are disposed on a substrate, wherein each of the pixels comprises an anode and an organic light emitting layer disposed overlying the anode. A primary cathode layer is disposed on the rows of the pixels, electrically connecting thereof. A plurality of patterned auxiliary cathodes are disposed on the primary cathode layer, and between each two rows of pixels.

Abstract: An organic electroluminescent device includes an anode, an organic electroluminescent material layer, and a multi-layer transparent cathode on a substrate in sequence. The multi-layer transparent cathode has a thin metal layer in the bottom of the transparent cathode, a doped buffer layer on the thin metal layer, and a transparent electrode on the doped buffer layer.