Droplet ejection apparatus, a method of manufacturing a panel from a base, an image display apparatus and an electronic apparatus

A droplet ejection apparatus includes a plurality of droplet ejection heads divided into three groups with each group including first to fourth heads with a second head being disposed between the third and fourth heads, and the third head being disposed between the first and second heads when viewed in a direction parallel to nozzle arrays. In each group, the nozzle array of the first head overlaps the nozzle array of the third head throughout a first sub-area, the nozzle array of the first head overlaps the nozzle array of the fourth head throughout a second sub-area, and the nozzle array of the second head overlaps the nozzle array of the fourth head throughout a third sub-area when viewed from a direction perpendicular to the nozzle arrays. The second sub-areas of the three groups partially overlap each other when viewed from the direction perpendicular to the nozzle arrays.