Patent ID: 8647919

Claim:
A method for manufacturing a light-emitting display device, the method comprising: forming a separation layer over a substrate; forming a first gate electrode and a second gate electrode over the separation layer; forming a gate insulating layer over the first gate electrode and the second gate electrode; forming an oxide semiconductor layer over the gate insulating layer; forming a first contact hole over the second gate electrode; forming a first source electrode, a first drain electrode, a second source electrode, and a second drain electrode over the oxide semiconductor layer so that one of the first source electrode and the first drain electrode is electrically connected to the second gate electrode; forming an insulating layer over the first source electrode, the first drain electrode, the second source electrode, and the second drain electrode; forming a second contact hole and a third contact hole simultaneously; forming a first pixel electrode over the second contact hole and the third contact hole; and separating the first gate electrode, the second gate electrode, the gate insulating layer, the oxide semiconductor layer, the first source electrode, the first drain electrode, the second source electrode, the second drain electrode, the insulating layer, and the first pixel electrode from the substrate, wherein the first contact hole is formed in the oxide semiconductor layer and the gate insulating layer to expose the second gate electrode, wherein the second contact hole is formed in the insulating layer to expose part of one of the second source electrode and the second drain electrode, and wherein the third contact hole is formed in the insulating layer and the oxide semiconductor layer to expose the gate insulating layer.