Patent ID: 7223309
Filing Date: 2007-05-29
Classification: B41J

Abstract:
1. A display manufacturing apparatus for applying liquid material including color components discharged out of nozzle openings to liquid material regions on a surface of a display substrate comprising: pressure chambers communicating with the nozzle openings and capable of reserving liquid material; electromechanical conversion elements capable of changing a volume of the pressure chambers; an injection head capable of discharging the liquid material in the pressure chambers out of the nozzle openings in a liquid drop state upon a supply of driving pulses to the electromechanical conversion elements; driving pulse generating means capable of generating the driving pulses; liquid material amount detecting means capable of detecting an applied amount of liquid material at each liquid material region; short amount acquiring means for acquiring a short amount of liquid material at the liquid material region from a difference between the applied amount of liquid material detected by the liquid material detecting means and a target amount of liquid material; excess amount acquiring means for acquiring an excess amount of liquid material from a difference between the applied amount of liquid material detected by the liquid material amount detecting means and the target amount of liquid material at the liquid material regions; color component decomposing means for decomposing a color component of the liquid material, the color component decomposing means comprising an excimer laser light source; and pulse shape setting means for setting a shape of the driving pulses to be generated by the driving pulse generating means; wherein the pulse shape setting means sets a waveform including waveform components of the driving pulses according to the short amount of liquid material acquired by the short amount acquiring means, the waveform components including an expansion component, an expansion hold component, a discharge component, a discharge hold component, a contraction damping component, a damping hold component and an expansion damping component; wherein the short amount of liquid material is supplementally applied to liquid material regions by generating the driving pulses from the driving pulse generating means and supplying the driving pulses to the electromechanical conversion elements; and wherein the color component decomposing means is operated according to the excess amount of liquid material to decompose an excess amount of color component.