Method for inkjet printing and method for manufacturing display device using the same

A method for manufacturing a display device, the method comprising:

• preparing a target substrate on which a light-shielding member for partitioning light emission areas and a light-shielding area are disposed;
• aligning an inkjet printing apparatus on the target substrate;
• setting a target volume and a target concentration of ink discharged to a pixel in the inkjet printing apparatus;
• measuring a volume and a concentration of a liquid drop for each of nozzles;
• selecting first nozzle groups for achieving the target volume from a volume pool of the liquid drop of each of the nozzles;
• selecting second nozzle groups for achieving the target concentration from the first nozzle groups;
• selecting recipes by combining brightness trend lines from the second nozzle groups;
• performing a printing simulation for each of the recipes to select a final recipe;
• sequentially forming a first wavelength converter, a second wavelength converter, and a light-transmitting unit by discharging the ink from the inkjet printing apparatus to the light emission area of the target substrate by the final recipe;
• and
• forming a color filter layer on the first wavelength converter, the second wavelength converter, and the light-transmitting unit.

A method for manufacturing a display device, the method comprising:

• preparing a target substrate on which electrodes, a first insulating layer, a first pattern, and a second pattern are disposed;
• aligning an inkjet printing apparatus on the target substrate;
• setting a target volume and a target concentration of ink discharged to a pixel in an inkjet printing apparatus;
• measuring a volume and a concentration of a liquid drop for each of nozzles;
• selecting first nozzle groups for achieving the target volume, from a volume pool of the liquid drop of each of the nozzles;
• selecting second nozzle groups for achieving the target concentration, from the first nozzle groups;
• selecting recipes by combining brightness trend lines, from the second nozzle groups;
• performing a printing simulation for each of the recipes to select a final recipe;
• and
• forming a light emitting element by discharging the ink from the inkjet printing apparatus onto the target substrate by the final recipe.