COLOR FILTER MANUFACTURING APPARATUS AND METHOD, COLOR FILTER, DISPLAY DEVICE, APPARATUS HAVING THE DISPLAY DEVICE, AND METHOD OF REDUCING UNEVENNESS OF DISCHARGE VOLUME IN PLURAL NOZZLES BY INK CIRCULATION

The present invention relates to a color filter manufacturing apparatus and method for manufacturing a color filter by coloring a color filter substrate by an ink-jet head, a color filter, a display device, an apparatus having the display device, and a method of reducing unevenness of discharge volume in plural nozzles by ink circulation. A color filter manufacturing apparatus can manufacture a color filter with less color unevenness in a short period of time. The color filter manufacturing apparatus forms an array of colored portions of a color filter by discharging a plurality of inks from a plurality of discharge orifices at a predetermined density by using an ink-jet head having a plurality of discharge orifices, an ink chamber connected to the plurality of discharge orifices, an ink supply opening for supplying ink to the ink chamber, and an ink exit opening for exiting ink from the ink chamber. The color filter manufacturing apparatus comprises an ink flow generating device for generating a flow of ink from the ink supply opening to the ink exit opening in the ink chamber while discharging ink from the discharge orifices for coloring. The colored portions are formed when a variation rate of ink volume discharged from the plurality of discharge orifices for forming the array of colored portions is ±3% or less.