Patent ID: 8196543

Claim:
A defect repairing apparatus comprising: a substrate-mounting plate for securing a substrate conveyed; a plurality of droplet discharge units, disposed along a direction different from a direction of conveyance of the substrate as seen from a direction perpendicular to the substrate secured by the substrate-mounting plate, which discharge droplets onto defects scattered about on the substrate; one or more gantries on which the plurality of droplet discharge units have been mounted; gantry sliding mechanism for moving the one or more gantries relatively at a constant velocity along the direction of conveyance of the substrate; and an observation camera unit connected to at least one of the gantries via a camera sliding mechanism in such a manner that the observation camera unit is movable along said at least one of the gantries, the gantry sliding mechanism and the camera sliding mechanism enabling the observation camera unit to output address information indicative of landing positions of droplets on a surface of the substrate, the address information being based on an amount of movement of the gantry sliding mechanism and an amount of movement of the camera sliding mechanism, the droplet discharge units moving each independently along a direction different from the direction of conveyance in accordance with the address information outputted by the observation camera unit, while the one or more gantries are moving relatively along the direction of conveyance of the substrate.