Liquid discharge method and apparatus and display device panel manufacturing method and apparatus

A liquid discharge method of discharging a liquid to a medium using a liquid discharge head having a plurality of nozzles for discharging the liquid, comprising:

• a step of discharging the liquid from the liquid discharge head which has only nozzles connected to a voltage control device which can independently change respective driving voltage values of respective driving pulses to be supplied to each of the plurality of nozzles,
• wherein the voltage control device changes a driving voltage value so as to correct a liquid discharge amount change caused by a change in at least one of conditions including a combination of nozzles to be used for performing a liquid discharge operation to a sheet of the medium, the number of nozzles to be used for performing a liquid discharge operation to a sheet of the medium, a liquid discharge timing from the nozzle, a direction of relative movement of the head and the medium, and a speed of the relative movement of the head and the medium.

A panel manufacturing apparatus for manufacturing a panel used for a display device by discharging, onto a substrate, a liquid from a liquid discharge head having a plurality of nozzles for discharding the liquid, comprising:

• a voltage control device which can change a driving voltage value of a driving pulse to be supplied to each of the plurality of nozzles,
• wherein said voltage control device changes the driving voltage value so as to correct a liquid discharge amount change caused by a change in at least one of conditions including a combination of nozzles to be used for performing a liquid discharge operation to a sheet of the substrate, the number of nozzles to be used for performing a liquid discharge operation to a sheet of the substrate, a liquid discharge timing from the nozzle, a direction of relative movement of the head and the substrate, and a speed of the relative movement of the head and the substrate.

A panel manufacturing method of manufacturing a panel used for a display device by discharging, onto a susbstrate, a liquid from a liquid discharge head having a plurality of nozzles for discharging the liquid,

• wherein the panel is manufactured by discharging the liquid from the liquid discharge head having only nozzles connected to a voltage control device which can change a driving voltage value of a driving pulse to be supplied to a nozzle, and wherein the voltage control device changes the driving voltage value so as to correct a liquid discharge amount change caused by a change in at least one of conditions including a combination of nozzles to be used for performing a liquid discharge operation to a sheet of the substrate, the number of nozzles to be used for performing a liquid discharge operation to a sheet of the substrate, a liquid discharge timing from a nozzle, a direction of relative movement of the head and the substrate, and a speed of the relative movement of the head and the substrate.

A color filter manufacturing method for manufacturing a color filter by discharging a liquid, to a substrate, from a liquid discharge head having a plurality of nozzles including a predetermined nozzle whose liquid discharge amount can be changed,

• wherein a discharge amount control device changes a liquid discharge amount of the predetermined nozzle by changing at least one of a voltage value and pulse width of a driving pulse to be supplied to the pretermined nozzle in accordance with a change in a discharging condition for adjacent nozzles adjacent to the predetermined nozzle.

A liquid discharge method of discharging a liquid, to a medium, from a liquid discharge head having a plurality of nozzles including a nozzle whose liquid discharge amount can be changed, comprising:

• a step of changing at least one of a voltage value and a pulse width of a driving pulse to be supplied to the nozzle so as to correct a change of the liquid discharge amount caused by a change in at least one of conditions including a combination of nozzles to be used for performing a liquid discharge operation to a sheet of the medium, the number of nozzles to be used for performing a liquid discharge operation to a sheet of the medium, a liquid discharge timing from the nozzle, a direction of relative movement of the head and the medium, and a speed of the relative movement of the head and the medium.

A panel manufacturing method of manufacturing a panel used for a display device by discharging a liquid, to a substrate, from a liquid discharge head having a plurality of nozzles including a nozzle whose liquid discharge amount can be changed, comprising:

• a step of changing at least one of a voltage value and a pulse width of a driving pulse to be supplied to the nozzle so as to correct a change of the liquid discharge amount caused by a change in at least one of the conditions including a combination of nozzles to be used for performing a liquid discharge operation to a sheet of the substrate, the number of nozzles to be used for performing a liquid discharge operation to a sheet of the substrate, a liquid discharge timing from the nozzle, a direction of relative movement of the head and the substrate, and a speed of the relative movement of the head and the substrate.

A color filter manufacturing method which manufactures a color filter by discharging a liquid, to a substrate, from a liquid discharge head having a plurality of nozzles including a nozzle whose liquid discharge amount can be changed, comprising:

• a step of changing at least one of a voltage value and a pulse width of a driving pulse to be supplied to the nozzle so as to correct a change of the liquid discharge amount caused by a change in at least one of conditions including a combination of nozzles to be used for performing a liquid discharge operation to a sheet of the substrate, the number of nozzles to be used for performing a liquid discharge operation to a sheet of the substrate, a liquid discharge timing from the nozzle, a direction of relative movement of the head and the substrate, and a speed of the relative movement of the head and the substrate.

A panel manufacturing method of manufacturing a panel used for a display device by discharging a liquid, to a substrate, from a liquid discharge head having a plurality of nozzles including a nozzle whose liquid discharge amount can be changed comprising:

• a step of changing at least one of a voltage value and a pulse width of a driving pulse to be supplied to the predetermined nozzle in accordance with a change in a discharging condition for at least one nozzle adjacent to the predetermined nozzle.

A color filter manufacturing method which manufactures a color filter by discharging a liquid, to a substrate, from a liquid discharge head having a plurality of nozzles including a nozzle whose liquid discharge amount can be changed, comprising:

• changing at least one of a voltage value and a pulse width of a driving pulse to be supplied to a predetermined nozzle in accordance with a change in a discharging condition for at least one nozzle adjacent to the predetermined nozzle,
• wherein the discharging condition includes at least one of conditions including a combination of nozzles to be used for performing a liquid discharge operation to a sheet of the substrate, the number of nozzles to be used for performing a liquid discharge operation to a sheet of the substrate, a liquid discharge timing from the nozzle, a direction of relative movement of the head and the substrate, and a speed of the relative movement of the head and the substrate.