Patent ID: 8860638

Claim:
A pixel comprising: an organic light emitting diode that is coupled between a first power supply to supply a first power and a second power supply to supply a second power; a first transistor that is coupled between the first power supply and the organic light emitting diode and having a gate that is connected to a first node; a second transistor that is coupled between the first node and a data line and having a gate electrode that is coupled to a scan line; and a storage capacitor having a first electrode that is coupled to the first node and second electrode that is coupled to the first power supply, wherein the storage capacitor includes: a semiconductor layer that is positioned on a different layer from that of the data line, a first dielectric layer that is formed on the semiconductor layer, a first conductive layer that is formed on the first dielectric layer and forms the second electrode, a second dielectric layer that is formed on the first conductive layer, and a second conductive layer that is formed on the second dielectric layer and forms the first electrode together with the semiconductor layer, the first conductive layer being positioned between the data line and the semiconductor layer to cover an upper surface of a region where the semiconductor layer overlaps with the data line and wherein the semiconductor layer extends continuously from a region overlapping with the second conductive layer to the region where the semiconductor layer overlaps with the data line to form the first electrode, wherein the semiconductor layer and activation layers of the first and second transistors are formed on a same layer and the semiconductor layer is of a same material as the activation layers of the first and second transistors, and wherein at least a portion of the first dielectric layer is located between the semiconductor layer and the activation layers of the first and second transistors.