Inkjet spraying method, inkjet spraying device and display panel manufacturing method using same

An inkjet spraying device comprising a spraying unit including a plurality of nozzles which spray an organic material on a target substrate including a plurality of first pixels which display a same color,

• wherein the plurality of nozzles comprises:
• a first nozzle which spray the organic material to a first reference pixel in first pixels disposed in a (1+a×n)th first-pixel row in the plurality of first pixels;
• and
• a second nozzle which spray the organic material to a second reference pixel in first pixels in a (2+a×n)th first-pixel row in the plurality of first pixels,
• the second nozzle is disposed in parallel with the first reference pixel in a first direction,
• n is an integer of 2 or more, and
• a is an integer of 0 or more.

A display panel manufacturing method comprising:

• preparing a target substrate including a plurality of first pixels which display a same color;
• and
• forming an organic layer by spraying, through a spraying unit including a plurality of nozzles, an organic material to each of the plurality of first pixels,
• wherein in the forming the organic layer, a first nozzle in the plurality of nozzles sprays the organic material to a first reference pixel in first pixels of a (1+a×n)th first-pixel row in the plurality of first pixels,
• a second nozzle, which is different from the first nozzle, in the plurality of nozzles sprays the organic material to a second reference pixel in first pixels of a (2+a×n)th first-pixel in the plurality of first pixels,
• the second reference pixel is disposed in parallel with the first reference pixel in the first direction,
• n is an integer of 2 or more, and
• a is an integer of 0 or more.