Effect of droplet spacing & deposition height on Sn conductive lines by pneumatic diaphragm drop-on-demand technology

Pneumatic diaphragm drop-on-demand (DOD) Technology is an attractive method for Sn conductive lines owing to low-cost, low-waste, and simple process. Based on stable generation of Sn droplets, the process parameters such as droplet spacing and deposition height have significant effect on the final quality of Sn conductive lines. In this work, Sn conductive lines were generated while droplet spacing was between 0.5mm and 2.2mm and deposition height was between 20mm and 38mm. The result suggested that proper droplet spacing and small deposition height would get high quality Sn conductive lines.