| CPC B05C 5/0291 (2013.01) [B05D 1/02 (2013.01)] | 9 Claims |
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1. A manufacturing method of a display device, the method comprising:
forming a first droplet on a first region of a substrate by a plurality of nozzles having a first separation distance from the substrate;
moving the plurality of nozzles onto a second region of the substrate spaced apart in a first direction from the first region;
forming a second droplet on the second region by the plurality of nozzles;
calculating a first distance between the first droplet formed on the first region and the second droplet formed on the second region;
moving the plurality of nozzles so that the plurality of nozzles has a second separation distance different from the first separation distance from the substrate;
moving the plurality of nozzles onto a third region of the substrate spaced apart in a direction opposite to the first direction from the second region;
forming a third droplet on the third region by the plurality of nozzles;
moving the plurality of nozzles onto a fourth region of the substrate spaced apart in the first direction from the third region;
forming a fourth droplet on the fourth region by the plurality of nozzles;
calculating a second distance between the third droplet formed on the third region and the fourth droplet formed on the fourth region; and
calculating a jetting velocity of each of the plurality of nozzles based on the first distance and the second distance,
wherein the jetting velocity of each of the plurality of nozzles is calculated through:
calculating a first hit error satisfying Equation 1 when the plurality of nozzles having the first separation distance from the substrate;
calculating a second hit error satisfying Equation 2 when the plurality of nozzles having the second separation distance from the substrate; and
calculating the jetting velocity of each of the plurality of nozzles through Equation 3 based on the first hit error and the second hit error,
wherein the Equation 1 is defined by:
 where the DS1 denotes the first hit error, the |FR1−BR1| denotes the first distance, and the |FP1−BP1| denotes a first input distance and the first input distance is defined between the first region and the second region when the first and second droplets are formed without leaving the first region and the second region,
the Equation 2 is defined by:
 where the DS2 denotes the second hit error, the |FR2−BR2| denotes the second distance, and the |FP2−BP2| denotes a second input distance and the second input distance is defined between the third region and the fourth region when the third and fourth droplets are formed without leaving the third region and the fourth region), and
the Equation 3 is defined by
 where the VN denotes the jetting velocity of each of the plurality of nozzles, the H denotes a difference between the first separation distance and the second separation distance, the VS denotes a velocity at which the substrate moves in the first direction or the direction opposite to the first direction, and the |DS1−DS2| denotes a difference between the first hit error and the second hit error).
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