To provide a method of driving droplet discharge head by which the uniformity of film thickness of a film pattern formed by discharging droplets is improved, a droplet discharge device and an electro-optical device.

A head driving circuit latches lower selection data SIL through a latch 62 and stores data concerning a nozzle for discharging the droplets. The head driving circuit judges a drawing mode on the basis of mode selection data AD1-AD3 through a state counter 63 and a duty control signal generating circuit 65 and when the drawing mode is the duty mode, an output timing control signal for selecting one of a plurality of the nozzle groups is generated in every state. The head driving circuit generates a signal (output control signal P1) for directing the discharge of droplets to each nozzle in the state regulated for the correspondent nozzle group is generated.