An ink jet printhead, an ink-jet printing device and a display manufacturing device are provided for eliminating or reducing droplets on areas outside of the printing area during the ink-jet printing process, thereby improving product quality. The ink jet printhead provided in the disclosure comprises at least one nozzle and a droplet removing component disposed in at least one edge area around the area where the at least one nozzle is located, the droplet removing component being used for eliminating or reducing droplets at positions corresponding to the edge area where the droplet removing component is located.