Display device, electronic device, and method for fabrication of display device

A method, comprising:

• forming a passivation layer on a substrate, and forming an anode electrode on the passivation layer;
• forming a pixel defining layer and a bank structure comprising a first bank layer and a second bank layer on the anode electrode;
• removing parts of the bank structure and the pixel defining layer to form the second bank layer to have a tip protruding toward a hole overlapping the anode electrode beyond a side surface of the first bank layer;
• and
• forming each of a light emitting layer, a cathode electrode, and an element inorganic layer on the anode electrode,
• wherein in the forming of the tip of the second bank layer, the tip of the second bank layer is tilted toward the substrate as it extends toward the hole, and
• the method is a method for fabrication of a display device.

An electronic device comprising:

• at least one display device comprising a substrate comprising an emission area and a non-emission area;
• a display device housing configured to accommodate the at least one display device;
• and
• an optical member configured to magnify a display image of the at least one display device and/or to change an optical path,
• wherein the at least one display device comprises:
• a passivation layer on the substrate;
• an anode electrode on the passivation layer;
• a pixel defining layer on the anode electrode to overlap the non-emission area and defining a first opening;
• a bank structure on the pixel defining layer and defining a second opening;
• a cathode electrode on the anode electrode and in contact with the bank structure;
• and
• an element inorganic layer on the cathode electrode, and
• wherein the bank structure comprises a first bank layer and a second bank layer having a tip protruding toward the first opening beyond a side surface of the first bank layer, and
• the tip of the second bank layer is tilted toward the substrate as it extends toward the first opening.