The disclosure relates to an organic light emitting diode array. The organic light emitting diode array includes a number of thin-film transistors arranged to form an array, a first insulative layer, a plurality of first electrodes, a number of electroluminescent layers, a patterned second insulative layer, and at least one second electrode. The first insulative layer is located on the plurality of first electrodes defines a number of convexities. The first electrodes are located on the convexities and electrically connected to the thin-film transistors. The electroluminescent layers are located on the first electrodes. The patterned second insulative layer is located on the first insulative layer to cover the first electrodes and expose the electroluminescent layers. The at least one second electrode is electrically connected to the electroluminescent layers.