Thin film transistor array substrate having non linear active layer and organic light emitting display apparatus including the same

A thin film transistor array substrate comprising:

• a driving thin film transistor defined by a plurality of thin film transistors connected in series, wherein the driving thin film transistor comprises:
• an active layer comprising:
• a plurality of channel regions extending substantially in a first direction;
• and
• a plurality of nodes extending substantially in a second direction perpendicular to the first direction, wherein the plurality of nodes connects the plurality of channel regions;
• and
• a gate electrode disposed overlapping the plurality of channel regions, wherein the gate electrode exposes the plurality of nodes;
• and
• a capacitor comprising:
• a first electrode defined by the gate electrode of the driving thin film transistor;
• and
• a second electrode disposed on the first electrode, wherein the second electrode overlaps the driving thin film transistor.

An organic light emitting display apparatus comprising:

• a driving thin film transistor comprising:
• an active layer having a bent shape, wherein the active layer comprises:
• a first active pattern extending substantially in a first direction;
• and
• a second active pattern extending substantially in a second direction perpendicular to the first direction and connected to the first active pattern;
• and
• a gate electrode disposed on the active layer, wherein the gate electrode overlaps the active layer and exposes the second active pattern;
• a capacitor comprising:
• a first electrode defined by the gate electrode;
• and
• a second electrode disposed on the first electrode, wherein the second electrode overlaps substantially an entire surface of the first electrode;
• and
• an organic light emitting diode which emits light by receiving a driving current from the driving thin film transistor.