Inkjet printing apparatus, dipole alignment method, and display device manufacturing method

An inkjet printing apparatus comprising:

• a stage;
• a print head part disposed above the stage, wherein the print head part comprises:
• a print head;
• and
• a nozzle that sprays ink including a dipole, the nozzle being extended to the print head;
• and
• an electric field generating part that provides an electric field to a space between the stage and the print head part.

An inkjet printing apparatus comprising:

• a stage;
• a print head part disposed above the stage;
• an electric field generating part that provides an electric field to a space between the stage and the print head part;
• a probe part;
• and
• a probe driver driving the probe part.

A dipole alignment method comprising:

• providing an electric field at an area above a target substrate;
• spraying ink onto the target substrate through the area, the ink including a dipole;
• and
• landing the dipole on the target substrate.

A display device manufacturing method comprising:

• preparing a base layer on which a first electrode and a second electrode are disposed;
• providing an electric field at an area above the base layer;
• spraying ink onto the base layer through the area, the ink including a light emitting element;
• and
• landing the light emitting element between the first electrode and the second electrode.