Patent ID: 8319221

Claim:
An organic light-emitting display apparatus comprising: an active layer formed on a substrate; a gate electrode comprising: a first gate electrode layer insulated from the active layer and comprising a semi-transmissive conductive material, a second gate electrode layer formed on the first gate electrode layer configured to protect the first gate electrode layer, a third gate electrode layer formed on the second gate electrode layer and comprising a transparent conductive material, and fourth gate electrode layer formed on the third gate electrode layer and comprising a conductive material; a pixel electrode comprising: a first electrode layer formed in the same layer level as the first gate electrode layer and comprising a semi-transmissive conductive material, a second electrode layer formed on the first electrode layer configured to protect the first electrode layer, third electrode layer formed on the second electrode layer and comprising a transparent conductive material, and a fourth electrode layer formed on the third electrode layer and comprising a conductive material; source and drain electrodes insulated from the gate electrode and electrically connected to the active layer and the pixel electrode; an intermediate layer formed on the pixel electrode and comprising an organic light-emitting layer; and an opposite electrode formed on the intermediate layer.