Display device and method for fabricating the same

A display device comprising:

• a first pixel electrode and a second pixel electrode disposed on a substrate and spaced apart from each other;
• an inorganic insulating layer disposed on the substrate and including a portion disposed on the first pixel electrode and a portion disposed on the second pixel electrode;
• a bank structure disposed on the inorganic insulating layer, wherein a first opening overlapping the first pixel electrode and a second opening overlapping the second pixel electrode are defined through the bank structure;
• a first light emitting layer disposed on the first pixel electrode, and a second light emitting layer disposed on the second pixel electrode;
• and
• a first common electrode disposed on the first light emitting layer, and a second common electrode disposed on the second light emitting layer,
• wherein the bank structure includes a first bank layer, a second bank layer disposed on the first bank layer and including a metal material different from a metal material of the first bank layer, and a third bank layer disposed on the second bank layer and including at least one oxide semiconductor layer, and
• each of the second bank layer and the third bank layer includes a tip defined on each of sidewalls of the bank structure defining the first opening and the second opening and protruding further than the first bank layer,
• wherein the third bank layer includes at least one selected from indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), indium tin gallium zinc oxide (ITGZO), indium tin zinc oxide (ITZO), indium tin gallium oxide (ITGO) and indium gallium oxide (IGO).