Patent ID: 8283860

Claim:
A method of fabricating an organic light emitting diode (OLED) display, the method comprising: providing a substrate; forming a thin film transistor including a semiconductor layer, a gate electrode, a source electrode and a drain electrode on a transistor region of the substrate; forming a scan line when forming the gate electrode on a metal line region of the substrate; forming a common power supply line and a data line when forming the source electrode and the drain electrode; forming a passivation layer over an entire surface of the substrate including the thin film transistor; forming a first electrode to overlap the scan line, the common power supply line and/or the data line; forming a pixel defining layer on at least the first electrode, creating an opening portion in the pixel defining layer using a backside exposure technique to expose a portion of a surface of the first electrode, wherein a width between parallel and facing edges of the opening portion corresponds to a distance between facing edges of the common power supply line and the data line, and wherein at least one of the scan line, the data line, or the common power supply line is configured to define a portion of a mask for forming the opening portion; forming an organic layer including at least an organic emission layer on the portion of the surface of the first electrode; and forming a second electrode on the organic layer.