Patent ID: 7662423

Claim:
A method for ejecting a liquid material comprising: classifying a plurality of nozzles of a head into a plurality of nozzle groups having different landing position accuracies for droplets; and performing ejection including: main scanning for ejecting droplets of a liquid material through nozzles selected from the plurality of nozzles toward target regions defined by a bank provided on a target substrate in a pattern forming a matrix, while generating relative movement in a main-scanning direction between the head and the target substrate, and, sub-scanning for generating relative movement between the head and the target substrate in a sub-scanning direction orthogonal to the main-scanning direction, wherein, the main scanning and the sub-scanning are performed separately for each of the plurality of nozzle groups, during the sub-scanning, relative movement between the head and the target substrate in the sub-scanning direction is generated in accordance with correction information for the corresponding nozzle group for correcting landing positions of the droplet, and during the main scanning, a droplet is ejected through at least one nozzle selected from the corresponding nozzle group, the plurality of nozzles are classified by dividing a distribution of the landing positions of droplets ejected through the plurality of nozzles into predetermined ranges so as to determine that nozzles corresponding to landing positions falling within a single predetermined range belong to a single nozzle group, and the predetermined ranges are each set to be smaller than or equivalent to half the size of the smallest width of the bank, such that the droplets to be ejected toward the target regions are kept from landing beyond the bank and flowing into an adjacent target region.