Patent ID: 8853676

Claim:
An organic light emitting diode (OLED), comprising a substrate, wherein a first electrode serving as an anode, an organic material layer, a second electrode serving as a cathode and a sealing layer are formed on the substrate in sequence, and the second electrode is a composite transparent structure layer realizing light emission at a top portion, and wherein the composite transparent structure layer comprises a semi-transparent metal layer and a current collection layer, the semi-transparent metal layer is formed on the organic material layer, the current collection layer is formed on the semi-transparent metal layer and is a mesh structure, and mesh lines of the current collection layer are formed at gap positions among pixel units determined by the organic material layer; wherein the composite transparent structure layer further comprises an optical anti-reflection layer formed on the current collection layer; and wherein a thickness of the optical anti-reflection layer is greater than a height of the mesh lines over the entire width of the substrate, and the optical anti-reflection layer fills in spaces enclosed with the mesh lines of the current collection layer and covers the current collection layer to form a substantially flat surface over the entire width of the substrate.