Pixel structure and display apparatus having the same

A pixel structure, comprising:

• a substrate;
• a gate electrode disposed on the substrate;
• a capacitor electrode disposed on the substrate and spaced apart from the gate electrode;
• a first insulation layer covering the gate electrode and the capacitor electrode, a thickness of the first insulation layer vertically above the gate electrode being greater than that vertically above the capacitor electrode, the first insulation layer having at least one recess vertically above the capacitor electrode and at least one first protrusion adjacent to the recess;
• an active layer disposed on the first insulation layer;
• and
• drain and source electrodes disposed on the active layer and spaced apart from each other.

A display apparatus, comprising:

• a pixel structure, comprising:
• a substrate;
• a gate electrode disposed on the substrate;
• a capacitor electrode disposed on the substrate and spaced apart from the gate electrode;
• a first insulation layer covering the gate electrode and the capacitor electrode, the first insulation layer having at least two recesses vertically above the capacitor electrode;
• an active layer disposed on the first insulation layer;
• drain and source electrodes disposed on the active layer and spaced apart from each other;
• and
• an extension electrode extending from the drain electrode or the source electrode into the recesses;
• and
• a display layer over the pixel structure.