Producing method for organic LED

The present invention discloses a method for producing an organic light emitting diode, a substrate is first provided, wherein the upper substrate has a thin film transistor formed with several arranged in an array, and each thin film transistor includes a gate electrode is formed, a channel layer, a source electrode and a drain. A first insulating layer is then formed over the substrate, covering the thin film transistor. Thereafter, a second insulating layer formed on the first insulating layer, and forming an opening penetrating the first insulating layer and the second insulating layer, exposing the drain. Followed by forming a second insulating layer covering the anode layer and the drain. Finally sequentially formed above the substrate a light emitting layer and a cathode layer.