Patent ID: 8075944

Claim:
A film forming method for forming films in plural positions on a substrate by applying liquid including a film material locally to the plural liquid applying positions on the substrate from an ink jet head having plural nozzles arranged linearly at a desired interval, wherein the plural liquid applying positions are arranged in a matrix form and an average pitch of the plural liquid applying positions in one row is different from that in another row, the method comprising: a step of detecting positional information of the plural liquid applying positions on the substrate; a step of calculating an average pitch of the plural liquid applying positions in each row, based on the positional information detected in the detecting step; a step of adjusting a rotation angle of the ink jet head so that a pitch of the nozzles in projection to a row direction substantially coincides with the average pitch of the plural liquid applying positions in each row, and a step of applying liquid to the liquid applying positions by scanning the ink jet head in a column direction in combination with rotating the ink jet head about an axis normal to the substrate by the rotation angle adjusted in the adjusting step.