Patent ID: 8318237
Filing Date: 2012-11-27
Classification: B41J,H01L

Abstract:
1. A liquid material drawing method for discharging a liquid material including a functional material from a plurality of nozzles to a plurality of pixel regions on a substrate in synchronization with relative movement of the substrate and the nozzles to form a plurality of pixels, the liquid material drawing method comprising: discharging from the nozzles droplets of the liquid material onto a test discharge object which is different from the substrate; checking discharge states of the liquid material on the test discharge object; storing nozzle information indicative of the discharge states of the liquid material, the nozzle information including information of a defective nozzle in which a discharge defect occurs; generating a pixel list indicative of each of the pixel regions corresponding to the defective nozzle based on the nozzle information; generating observation coordinates indicating observation regions to be observed in the pixel regions on the substrate based on the pixel list and arrangement information indicative of an arrangement of each of the nozzles with respect to each of the pixel regions in the relative movement; discharging and drawing droplets of the liquid material in the pixel regions on the substrate from the nozzles based on the arrangement information; observing the observation regions in the pixel regions positioned at the observation coordinates of the substrate after the liquid material is discharged and drawn on the substrate; identifying a defective nozzle corresponding to a defective pixel among the pixel regions; and correcting the arrangement information when the defective pixel is detected, the generating of the observation coordinates including generating coordinates of at least some of the pixel regions over which the nozzles scan through one cycle of the relative movement as the observation coordinates.