Organic light emitting diode and display device

A display device, comprising

• a plurality of the organic light emitting diode;
• and
• a driving circuit electrically connecting with the organic light emitting diodes for controlling to the organic light emitting diodes emit;
• wherein each of the organic light emitting diodes comprises
• an anode;
• an organic emission layer positioned on the anode, the organic emission layer includes a multilayer functional layer;
• and
• a cathode positioned on the organic emission layer;
• wherein electrons and holes are transmitting to the organic emission layer by the cathode and the anode respectively and combining with the organic emission layer for light-emitting;
• a diffusion layer is positioned between at least two adjacent functional layers of the multilayer functional layer, the diffusion layer dissociates metal ions, the metal ions is diffusing to the functional layer adjacent to the diffusion layer for filling traps of the functional layer which is adjacent to the diffusion layer.