Organic light emitting diode display

A display device, comprising:

• a substrate;
• a scan line on the substrate;
• an emission control line extending substantially parallel to the scan line;
• a data line crossing the scan line and the emission control line;
• a driving voltage line crossing the scan line and the emission control line;
• a pixel electrode on the substrate;
• a first transistor electrically connected to the data line and the scan line;
• a second transistor electrically connected to the pixel electrode;
• a third transistor electrically connected to the driving voltage line, the first transistor and the second transistor;
• a semiconductor layer on the substrate;
• and
• a storage capacitor including a first storage electrode, wherein
• the semiconductor layer comprises a T-shaped portion;
• the first transistor, the second transistor, and the third transistor are connected to each other through the T-shaped portion;
• the T-shaped portion is arranged in an area defined by the scan line, the emission control line, the data line, and the driving voltage line;
• a first portion of the semiconductor layer is substantially parallel to a portion of the data line and is not overlapped by the data line, and
• at least a portion of the first portion of the semiconductor layer overlaps the first storage electrode in a plan view.